阅读说明：本技术 一种耐压抗疲劳型封油圈 (Pressure-resistant anti-fatigue oil seal ring ) 是由 郑伟杰 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种耐压抗疲劳型封油圈,包括封油圈主体,所述封油圈主体包括支架结构、密封圈和弹性结构,所述支架结构包括封油圈外框、封油圈支架和轴孔,所述封油圈外框为环形,所述封油圈外框的内周固定设置有封油圈支架,所述封油圈支架的内部固定嵌有密封圈。本发明通过在封油圈支架的环形空腔内均匀的设有固定块,然后在固定块内插接有支撑柱,支撑柱的另一端固定设有密封片,密封片还与密封圈外侧的弧形凹槽进行过盈配合,当密封圈与轴承进行紧密贴合时,密封片会受到挤压力进入到弧形凹槽内,而密封圈与轴承之间出现间隙时,支撑柱就会受到弹簧的弹力带动密封片向外移动,从而对缝隙进行填充,提高了封油圈的密封效果。(The invention discloses a pressure-resistant and anti-fatigue oil seal ring which comprises an oil seal ring main body, wherein the oil seal ring main body comprises a support structure, a seal ring and an elastic structure, the support structure comprises an oil seal ring outer frame, an oil seal ring support and a shaft hole, the oil seal ring outer frame is annular, the oil seal ring support is fixedly arranged on the inner periphery of the oil seal ring outer frame, and the seal ring is fixedly embedded in the oil seal ring support. According to the oil seal ring, the fixed blocks are uniformly arranged in the annular cavity of the oil seal ring support, the supporting columns are inserted in the fixed blocks, the sealing sheet is fixedly arranged at the other end of the supporting column and is in interference fit with the arc-shaped groove on the outer side of the sealing ring, when the sealing ring is tightly attached to the bearing, the sealing sheet can enter the arc-shaped groove under the action of extrusion force, and when a gap is formed between the sealing ring and the bearing, the supporting columns can drive the sealing sheet to move outwards under the action of the elastic force of the springs, so that the gap is filled, and the sealing effect of the oil seal ring is improved.)

1. The utility model provides a withstand voltage antifatigue type seals oil ring, includes seals oil ring main part, seal oil ring main part includes supporting structure, sealing washer (4) and elastic construction, its characterized in that: the supporting structure includes oil seal ring frame (1), oil seal ring support (2) and shaft hole (3), oil seal ring frame (1) is the annular, the interior fixed oil seal ring support (2) that is provided with of inner week of oil seal ring frame (1), the fixed sealing washer (4) that has inlayed in inside of oil seal ring support (2), sealing washer (4) are made by HNBR hydrogenated nitrile rubber material for improve anticorrosive and the compressive resistance of sealing washer (4), shaft hole (3) have been seted up to the inside of oil seal ring support (2), elastic structure includes support column (5), fixed block (6), spring (7) and gasket (8).

2. A pressure-resistant and fatigue-resistant oil seal ring according to claim 1, wherein: an annular cavity (201) is formed in the oil sealing ring support (2), a fixing block (6) is uniformly and fixedly arranged in the annular cavity (201), and the fixing block (6) is trapezoidal.

3. A pressure-resistant and fatigue-resistant oil seal ring according to claim 2, wherein: hole (601) have been seted up at the top of fixed block (6), it has support column (5) to peg graft in hole (601), the fixed baffle (501) that is equipped with of one end of support column (5), the cross sectional area of baffle (501) is greater than the cross sectional area of hole (601).

4. A pressure-resistant and fatigue-resistant oil seal ring according to claim 3, wherein: the one end that hole (601) were kept away from in support column (5) runs through the inside that oil seal ring support (2) and sealing washer (4) extended to shaft hole (3), the fixed gasket (8) that is provided with of penetrating end of support column (5), gasket (8) are the arc.

5. A pressure-resistant and fatigue-resistant oil seal ring according to claim 1, wherein: the supporting column (5) is sleeved with a spring (7) at a position in the fixing block (6) and used for providing an outward elastic force for the supporting column (5).

6. A pressure-resistant and fatigue-resistant oil seal ring according to claim 1, wherein: arc recess (401) have been seted up to the position that sealing washer (4) outside corresponds sealing washer (8), be interference fit between arc recess (401) and sealing washer (8).

7. A pressure-resistant and fatigue-resistant oil seal ring according to claim 2, wherein: the length of the supporting column (5) is smaller than the width in the annular cavity (201).

8. A pressure-resistant and fatigue-resistant oil seal ring according to claim 1, wherein: the thickness and the width of the sealing piece (8) are respectively smaller than those of the sealing ring (4).

9. A pressure-resistant and fatigue-resistant oil seal ring according to claim 3, wherein: the size of the spring (7) is larger than the diameter of the hole (601) and is used for preventing the spring (7) from being extruded out of the hole (601).

Technical Field

The invention relates to the technical field of oil seal rings, in particular to a pressure-resistant anti-fatigue oil seal ring.

Background

The selection of the material of the sealing ring has important significance on the sealing performance and the service life of the sealing ring. The performance of the material directly influences the use performance of the sealing ring, and the performance of the sealing ring comprises rich elasticity and resilience; suitable mechanical strength includes tensile strength, elongation, tear strength, and the like. Stable performance, difficult swelling in medium and small heat shrinkage effect (Joule effect). Easy to machine and form and can keep precise size. Does not corrode the contact surface and does not pollute the medium, etc. The most suitable and most commonly used material to meet the above requirements is rubber, so the seal ring is most often made of rubber material. The variety of the rubber is many, new rubber varieties continuously appear, and the characteristics of various rubbers can be known and reasonably selected during design and selection. The sealing ring has good sealing performance under working pressure and a certain temperature range, and the sealing performance can be automatically improved along with the increase of the pressure.

The existing oil sealing ring is easy to age in the using process, so that looseness can be caused, a gap is formed between the oil sealing ring and a bearing, vibration is caused under the condition that the bearing rotates at a high speed or machinery, the loosened sealing piece is easy to drop, the sealing performance of an oil seal is reduced, and normal use is influenced.

Disclosure of Invention

The invention aims to provide a pressure-resistant and anti-fatigue oil seal ring to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a withstand voltage antifatigue type seals oil ring, includes oil ring main part, oil ring main part includes supporting structure, sealing washer and elastic construction, supporting structure is including sealing oil ring frame, sealing oil ring support and shaft hole, oil ring frame is the annular, the interior fixed oil ring support that is provided with of interior week of oil ring frame, the fixed sealing washer that has inlayed in inside of sealing oil ring support, the sealing washer is made by HNBR hydrogenated nitrile rubber material for improve anticorrosive and the compressive resistance of sealing washer, the shaft hole has been seted up to the inside of sealing oil ring support, elastic construction includes support column, fixed block, spring and gasket.

Preferably, an annular cavity is formed in the oil sealing ring support, fixing blocks are uniformly and fixedly arranged in the annular cavity, and the fixing blocks are trapezoidal.

Preferably, the top of fixed block has seted up the hole, it has the support column to peg graft in the hole, the fixed baffle that is equipped with of one end of support column, the cross sectional area of baffle is greater than the cross sectional area of hole.

Preferably, the one end that the hole was kept away from to the support column runs through the inside that oil seal ring support and sealing washer extended to the shaft hole, the fixed gasket that is provided with that runs through of support column, the gasket is the arc.

Preferably, the supporting column is sleeved with a spring at a position in the fixing block, and the spring is used for providing an outward elastic force for the supporting column.

Preferably, an arc-shaped groove is formed in the position, corresponding to the sealing sheet, of the outer side of the sealing ring, and the arc-shaped groove and the sealing sheet are in interference fit.

Preferably, the length of the support column is smaller than the width in the annular cavity.

Preferably, the thickness and the width of the sealing sheet are respectively smaller than those of the sealing ring.

Preferably, the spring is sized larger than the diameter of the hole to prevent the spring from being extruded from the hole.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the supporting columns are arranged in the fixed blocks in a sliding manner, the sealing sheet is also arranged at the other end of the supporting column and can be in interference fit with the arc-shaped groove on the sealing ring, when the sealing sheet is tightly connected with the bearing, the sealing sheet can enter the arc-shaped groove under the action of extrusion force, but when a gap exists between the sealing sheet and the bearing, the supporting columns can be driven by the elastic force of the springs to move outwards, so that the gap is filled, the compactness between the sealing sheet and the bearing is increased, the sealing effect is improved, the sealing ring is effectively prevented from falling off, and the sealing ring is convenient.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a partial sectional view of the present invention;

FIG. 3 is a view showing the structure of A in FIG. 2 according to the present invention.

In the figure: 1-oil seal ring outer frame; 2-oil seal ring support; 201-an annular cavity; 3-shaft hole; 4-sealing ring; 401-arc groove; 5-a support column; 501-baffle plate; 6, fixing blocks; 601-holes; 7-a spring; 8-sealing piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: the utility model provides a withstand voltage antifatigue type oil seal circle, includes oil seal circle main part, oil seal circle main part includes supporting structure, sealing washer 4 and elastic construction, supporting structure includes oil seal circle frame 1, oil seal circle support 2 and shaft hole 3, oil seal circle frame 1 is the annular, the fixed oil seal circle support 2 that is provided with in inner week of oil seal circle frame 1, the fixed sealing washer 4 that has inlayed in inside of oil seal circle support 2, sealing washer 4 is made by HNBR hydrogenated nitrile butadiene rubber material for improve the anticorrosive and the compressive resistance of sealing washer 4, shaft hole 3 has been seted up to oil seal circle support 2's inside, is used for cup jointing with bearing or oil blanket.

Referring to fig. 2-3, the elastic structure includes a supporting pillar 5, a fixing block 6, a spring 7 and a sealing sheet 8;

an annular cavity 201 is formed in the oil seal ring support 2, a fixing block 6 is uniformly and fixedly arranged in the annular cavity 201, the fixing block 6 is trapezoidal, the stability of the fixing block 6 can be improved, a hole 601 is formed in the top of the fixing block 6, a supporting column 5 is inserted into the hole 601, and the supporting column 5 is in sliding connection with the hole 601;

in order to prevent the support column 5 from falling out of the hole 601, a baffle 501 is fixedly arranged at one end of the support column 5, and the cross-sectional area of the baffle 501 is larger than that of the hole 601;

in order to allow the sealing plate 8 to enter the arc-shaped groove 401, the length of the supporting column 5 is smaller than the width of the annular cavity 201, so that the supporting column 5 can be completely retracted into the annular cavity 201.

One end, far away from the hole 601, of the supporting column 5 penetrates through the oil sealing ring support 2 and the sealing ring 4 and extends into the shaft hole 3, a sealing sheet 8 is fixedly arranged at the penetrating end of the supporting column 5, the sealing sheet 8 is arc-shaped, the contact area between the sealing sheet 8 and the rotating shaft can be increased, the arc shape is easier to deform, and gaps can be conveniently filled;

an arc-shaped groove 401 is formed in the outer side of the sealing ring 4 corresponding to the sealing sheet 8, the arc-shaped groove 401 is in interference fit with the sealing sheet 8, the sealing sheet 8 is in sliding connection with the oil sealing ring support 2 and the sealing ring 4 through the support column 5, and when the sealing ring 4 is in close contact with the bearing, the sealing sheet 8 can enter the arc-shaped groove 401 under the action of extrusion force;

in order to improve the filling effect of the sealing sheet 8 and enable the sealing sheet 8 to be in interference fit with the arc-shaped groove 401 fully, the thickness and the width of the sealing sheet 8 are respectively smaller than those of the sealing ring 4;

in order to provide an outward force for the supporting column 5 and the sealing sheet 8 and enable the sealing sheet 8 to reset, the position, located in the fixed block 6, of the supporting column 5 is sleeved with the spring 7, and therefore an outward elastic force can be provided for the supporting column 5.

To prevent the spring 7 from being pushed out of the hole 601, the size of the spring 7 is larger than the diameter of the hole 601.

The working principle is as follows: the invention has a support structure comprising an oil sealing ring outer frame 1, an oil sealing ring support 2 and a shaft hole 3, wherein the oil sealing ring support 2 is fixedly arranged on the inner periphery of the oil sealing ring outer frame 1 and is used for playing a role of integral support, a sealing ring 4 is fixedly embedded in the oil sealing ring support 2 and is used for being directly sealed with a bearing to play a role of sealing, an annular cavity 201 is arranged in the oil sealing ring support 2, then a fixed block 6 is uniformly and fixedly arranged in the annular cavity 201, a supporting column 5 is slidably inserted in the fixed block 6, a spring 7 is sleeved at the position of the supporting column 5 in the fixed block 6, a sealing sheet 8 is fixedly arranged at the other end of the supporting column 5, an arc-shaped groove 401 is also arranged at the position of the outer side of the sealing ring 4 corresponding to the sealing sheet 8, the sealing sheet 8 is in interference fit with the arc-shaped groove 401, when the sealing sheet 8 is tightly, the gasket 8 receives the extrusion force and can enter into arc recess 401, but when appearing the gap between gasket 8 and the bearing, support column 5 can receive spring 7's elasticity and drive gasket 8 and outwards remove to fill the gap, increased closely knit degree between gasket 8 and the bearing, improved sealed effect, prevent effectively still that sealing washer 4 from taking place to drop facilitates the use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.