CN110410116A - Hydraulic prop sealing ring - Google Patents
Hydraulic prop sealing ring Download PDFInfo
- Publication number
- CN110410116A CN110410116A CN201910715513.3A CN201910715513A CN110410116A CN 110410116 A CN110410116 A CN 110410116A CN 201910715513 A CN201910715513 A CN 201910715513A CN 110410116 A CN110410116 A CN 110410116A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- sealing
- hydraulic prop
- reservoir
- ring body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 148
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 8
- 230000002708 enhancing effect Effects 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000005461 lubrication Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 14
- 125000004122 cyclic group Chemical group 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
Abstract
The invention discloses a kind of hydraulic prop sealing ring, including sealing ring body, cavity structure, the interior sidewall surface or outer side surface of sealing ring body constitute sealing surface to the sealing ring body in a ring；Reservoir is offered on the sealing surface of the sealing ring body, offers fluid injection through-hole on the side wall far from the sealing ring body sealing surface, the fluid injection through-hole is communicated with the cavity of the sealing ring body.Hydraulic prop provided by the invention is with sealing ring by opening up reservoir in sealing surface, make movable post body so in the process of reciprocating, reservoir self-assembling formation lubricant film layer on sealing surface, utilize the lubrication drop resistance characteristic of lubricating film, the abrasion of sealing surface can effectively be slowed down, to extend the service life of sealing ring, and the sealing ring replacement frequency of hydraulic prop in the long-term use is effectively reduced, improves the safety that hydraulic prop uses.
Description
Technical field
The present invention relates to a kind of Pneumatic sealing ring, especially a kind of hydraulic prop sealing ring.
Background technique
It is well known that initial sealing is squeezed by sealed ring deformation in movable post body dynamic sealing in hydraulic prop
Casing wall or piston head on movable post body and complete sealing function, to the dimension precision requirement and rough surface of casing wall or piston head
Degree requires all very high.As sealing ring is constantly worn and the creep and aging of sealing ring material, piston rod and sealing ring it
Between normal pressure be gradually reduced, sealing effect gradually weakens, and is finally come to an end with seal failure.
For this purpose, those skilled in the art improve sealing element, by the way that sealing ring is fabricated to cavity structure.In work
During work, by injecting liquid into sealing ring body cavity, sealing surface is made to be tightly attached to cylinder by fluid pressure in cavity
Internal wall or movable post body are to realize good sealing effect.However, being propped up since hydraulic prop is influenced by use environment
The earth's surface of support hydraulic prop is chronically in microseismic activity so that the movable post body in hydraulic prop do for a long time it is small
The reciprocating motion of amplitude causes the sealing surface wear of sealing ring body serious in this way, and then shortens the service life of sealing ring, leads
Frequently replacement sealing ring is caused, or there is the security risk to drop suddenly because sealing ring is replaced not in time.
Summary of the invention
The present invention is serious aiming at the sealing surface wear of existing Pneumatic sealing ring ontology, and that shortens sealing ring uses the longevity
The problem of ordering, need to frequently replacing sealing ring, and a kind of extended hydraulic prop sealing ring of service life is provided, with
Effectively reduce the sealing ring replacement frequency of hydraulic prop in the long-term use.
To achieve the above object, technical scheme is as follows: a kind of hydraulic prop sealing ring, including sealing
Ontology is enclosed, cavity structure, the interior sidewall surface or outer side surface of sealing ring body constitute sealing surface to the sealing ring body in a ring；
Reservoir is offered on the sealing surface of the sealing ring body, offers note on the side wall far from the sealing ring body sealing surface
Fluid through-hole, the fluid injection through-hole are communicated with the cavity of the sealing ring body.
Hydraulic prop provided by the invention with sealing ring by opening up reservoir in sealing surface, and far from sealing surface
Side wall surface on open up the fluid injection through-hole communicated with sealing ring body cavity, which is arranged with sealing ring in monomer
In the cylinder body of hydraulic prop, when injecting liquid into cylinder body, liquid enters sealing ring by the fluid injection through-hole on sealing ring
In cavity, sealing surface is set to be tightly attached to inboard wall of cylinder block to realize good sealing effect by fluid pressure in cavity.It is using
In the process, the liquid laid in reservoir, can form lubricant film layer on sealing surface, special using the lubrication drop resistance of lubricating film
Property, can effectively slow down the abrasion of sealing surface, to extend the service life of sealing ring, and effectively reduce hydraulic prop and make for a long time
The frequency is replaced with sealing ring in the process, improves the safety that hydraulic prop uses.
Further, the reservoir is in a ring or at least one circumferentially distributed " ∞ " shape.It can make to seal in this way
The contact surface of face and sealing element relative motion is equipped with reservoir, to reduce the abrasion of sealing surface.
Further, the section of the reservoir is arc, V-arrangement, rectangle, water-drop-shaped or U-shaped.In this way convenient for storing liquid,
And production is simple, and can reduce the production raw material of sealing ring, mitigates weight.
Further, when reservoir in a ring when, the distribution shape of the oil storage tank is straight line, wave molding or broken line.In this way
The distribution of oil storage tank can form the structure of various shapes, and according to pillar specification and bearing capacity flexible choice；Wherein, ripple
For the oil storage tank of lineal layout, liquid storage amount can significantly increase the distribution shape of line or broken line, to further drop
Low ring wear amount, prolongs the service life.
Further, when reservoir is multiple " ∞ " shapes, adjacent " ∞ " the shape perforation of two of the oil storage tank.So as to whole
Uniform drag reduction drop mill effect is formed on a sealing surface.
Further, the material of the sealing surface of the sealing ring body is high polymer draft reduction material.High polymer draft reduction material tool
Have that coefficient of friction is small, wear-resistant feature can extend the service life of sealing ring；Also sealing ring face and sealing element phase be can choose
High polymer draft reduction material is used to the material of the contact surface of movement.
Further, at least one end of the sealing ring body short transverse is equipped with an enhancing retaining ring.The enhancing retaining ring can be with
Play the role of bearing pressure, while playing guiding.
The utility model has the advantages that
Hydraulic prop provided by the invention is with sealing ring by opening up reservoir in sealing surface, so that movable post body
In the process of reciprocating, the reservoir self-assembling formation lubricant film layer on sealing surface plays the purpose of lubrication, reduces sealing surface
Abrasion, to extend the service life of sealing ring, and effectively reduce the sealing ring of hydraulic prop in the long-term use more
The frequency is changed, the safety that hydraulic prop uses is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1, and wherein outer side surface is sealing surface；
Fig. 2 is the cross-section diagram of the embodiment of the present invention 1；
Fig. 3-6 is the sealing surface expanded schematic diagram in the present invention；Wherein, the reservoir that Fig. 3 is shown is in continuous linear shape
Cyclic structure；The reservoir that Fig. 4 is shown is in continuous wavy cyclic structure；The reservoir that Fig. 5 is shown is in continuous folding
Linear cyclic structure；The reservoir that Fig. 6 is shown is in the cyclic structure of multistage broken line shape；
Fig. 7 is the cross-section diagram of the embodiment of the present invention 2；
Fig. 8 is the cross-section diagram of the embodiment of the present invention 3；
Fig. 9 is the cross-section diagram of the embodiment of the present invention 4；
Figure 10 is the cross-section diagram of the embodiment of the present invention 5；
In the figure, it is marked as 1 sealing ring body, 2 reservoirs, 3 fluid injection through-holes, 4 enhancing retaining rings.
Specific embodiment
In the description of the present invention, it is to be understood that, term " on ", "lower" "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or original part of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1
It is as shown in Figs. 1-2: described the present invention provides a kind of hydraulic prop sealing ring, including sealing ring body 1
Cavity structure, the outer side surface of sealing ring body 1 constitute sealing surface to sealing ring body 1 in a ring；The sealing ring body 1 it is close
Reservoir 2 is offered on cover, offers fluid injection through-hole 3, the fluid injection on the side wall far from 1 sealing surface of sealing ring body
Through-hole 3 is communicated with the cavity of the sealing ring body 1.
Hydraulic prop provided by the invention with sealing ring by opening up reservoir 2 in sealing surface, and far from sealing
The fluid injection through-hole 3 communicated with 1 cavity of sealing ring body is opened up in the side wall surface in face, which is arranged with sealing ring
In the cylinder body of hydraulic prop, when injecting liquid into cylinder body, liquid enters sealing by the fluid injection through-hole 3 on sealing ring
In the cavity of circle, cylinder it is intracorporal it is hydraulic force piston push movable post body move reciprocatingly, there is small amount of liquids to pass through at the same time
Gap enters in the reservoir 2 on sealing surface, so that movable post body is in the process of reciprocating, the reservoir 2 on sealing surface is certainly
Lubricant film layer is so formed, the purpose of lubrication can be played, reduce the frictional resistance of sealing surface, to extend the use longevity of sealing ring
Life.
Wherein, reservoir 2 is in a ring or at least one circumferentially distributed " ∞ " shape.Can make in this way sealing surface with
The contact surface of sealing element relative motion is equipped with reservoir, to reduce the abrasion of sealing surface.
Wherein, the section of reservoir 2 is arc.In this way convenient for storage liquid, and make simply, and sealing ring can be reduced
Raw material is made, weight is mitigated.
Wherein, the material of the sealing surface of sealing ring body 1 is high polymer draft reduction material.High polymer draft reduction material has friction
Coefficient is small, and wear-resistant feature can extend the service life of sealing ring；Also sealing ring face and sealing element relative motion be can choose
Contact surface material use high polymer draft reduction material.
Wherein, one end of 1 short transverse of sealing ring body is equipped with an enhancing retaining ring 4.The enhancing retaining ring 4 can play receiving
The effect of pressure, while playing the role of guiding.
Obviously, the settable enhancing retaining ring 4 in the short transverse both ends of sealing ring body 1.
As shown in figure 3, reservoir 2 is circumferentially in the cyclic structure of continuous linear shape along sealing surface.
In the present embodiment, reservoir 2 can also form continuous wavy cyclic structure as shown in Figure 4；As shown in Figure 5
The continuous cyclic structure of fold-line-shaped and the cyclic structure of intermittent multistage broken line shape as shown in FIG. 6.
The reservoir 2 of the present embodiment can also be in circumferentially arranged single " ∞ " shape, can also be in circumferentially arranged multiple
Multiple " ∞ " the shape continuous structures successively penetrated through.Wherein, " ∞ " shape is mutually wound by two reversed helixes.
Embodiment 2
As shown in fig. 7, the present embodiment the difference from embodiment 1 is that: the section of reservoir 2 be V-arrangement, be also beneficial in this way
Liquid is stored, to form lubricant film layer on sealing surface, reduces frictional resistance, and then extend the service life of sealing ring.
Remaining structure of the present embodiment is same as Example 1, and details are not described herein.
Embodiment 3
As shown in figure 8, the present embodiment the difference from embodiment 1 is that: the section of reservoir 2 is rectangle, also advantageous in this way
In storage liquid, to form lubricant film layer on sealing surface, reduce frictional resistance, and then extend the service life of sealing ring.
Remaining structure of the present embodiment is identical as embodiment 1 or embodiment 2, and details are not described herein.
Embodiment 4
As shown in figure 9, the present embodiment the difference from embodiment 1 is that: the section of reservoir 2 be water-drop-shaped, wherein water droplet
The top small end of shape is connected to sealing surface, water-drop-shaped or pouch shape, is in the big tripe structure of osculum.In the identical feelings of width of rebate
Under condition, oil storage tank has bigger liquid storage amount, to form lubricant film layer on sealing surface, reduces frictional resistance, in turn
Extend the service life of sealing ring.
Remaining structure of the present embodiment is identical as embodiment 1,2 or 3, and details are not described herein.
In addition, the section of reservoir 2 can also be U-shaped or other shapes that can store liquid.
When the sealing ring of above-described embodiment 1-4 is used for hydraulic prop, it is mounted on piston head, with sealing ring body 1
Outer side surface be sealing surface.
Embodiment 5
As shown in Figure 10, the difference of the present embodiment and embodiment 1-4 is: being close with the interior sidewall surface of sealing ring body 1
Cover is mounted on cylinder body when the sealing ring is used for hydraulic prop.
Remaining structure of the present embodiment and embodiment 1,2,3 or 4 are identical, and details are not described herein.
The above is only the preferred embodiment of the present invention, it is noted that not departing from this for those skilled in the art
Under the premise of technical solution, the technical solution for the several modifications and improvements made should equally be contemplated as falling within the claims requirement
The range of protection.
Claims (7)
1. a kind of hydraulic prop sealing ring, including sealing ring body (1), the sealing ring body (1) cavity in a ring
Structure, the interior sidewall surface or outer side surface of sealing ring body (1) constitute sealing surface；It is characterized in that, the sealing ring body (1)
Sealing surface on offer reservoir (2), far from the sealing ring body (1) sealing surface side wall on offer fluid injection through-hole
(3), the fluid injection through-hole (3) communicates with the cavity of the sealing ring body (1).
2. hydraulic prop sealing ring according to claim 1, which is characterized in that the reservoir (2) in a ring,
Or at least one circumferentially distributed " ∞ " shape.
3. hydraulic prop sealing ring according to claim 1, which is characterized in that the section of the reservoir (2)
For arc, V-arrangement, rectangle, water-drop-shaped or U-shaped.
4. hydraulic prop sealing ring according to claim 2, which is characterized in that when reservoir (2) in a ring when,
The distribution shape of the oil storage tank (2) is straight line, wave molding or broken line.
5. hydraulic prop sealing ring according to claim 2, which is characterized in that when reservoir (2) are multiple
When " ∞ " shape, adjacent " ∞ " the shape perforation of two of the reservoir (2).
6. hydraulic prop sealing ring according to claim 1, which is characterized in that the sealing ring body (1)
The material of sealing surface is high polymer draft reduction material.
7. -6 any hydraulic prop sealing ring according to claim 1, which is characterized in that the sealing ring body
(1) at least one end of short transverse is equipped with enhancing retaining ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715513.3A CN110410116A (en) | 2019-08-05 | 2019-08-05 | Hydraulic prop sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910715513.3A CN110410116A (en) | 2019-08-05 | 2019-08-05 | Hydraulic prop sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110410116A true CN110410116A (en) | 2019-11-05 |
Family
ID=68365838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910715513.3A Pending CN110410116A (en) | 2019-08-05 | 2019-08-05 | Hydraulic prop sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410116A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053042A (en) * | 1991-02-20 | 1991-07-17 | 张革 | Expandable sealing ring |
| CN2168128Y (en) * | 1993-07-20 | 1994-06-08 | 邢台矿务局橡塑制品厂 | Maintainless hydraulic sealing device |
| JP2007232181A (en) * | 2006-03-03 | 2007-09-13 | Toyota Motor Corp | Rear end sealing structure of crankshaft |
| CN202371170U (en) * | 2011-11-19 | 2012-08-08 | 青岛海力威新材料科技股份有限公司 | High pressure and low pressure resistant Y-shaped sealing ring |
| CN202468992U (en) * | 2011-11-19 | 2012-10-03 | 青岛海力威新材料科技股份有限公司 | Combined through hole sealing ring with low pressure resistance and high pressure resistance |
| CN202768859U (en) * | 2012-08-31 | 2013-03-06 | 王洁 | Self-lubricating pneumatic sealing ring |
| CN103362524A (en) * | 2013-08-03 | 2013-10-23 | 刘立起 | Drum type boosting multi-ring composite sealing handle body |
| CN104565385A (en) * | 2015-01-20 | 2015-04-29 | 马鞍山市荣亿密封材料有限责任公司 | Large-sized internal supercharging shaft sealing device |
| CN207437774U (en) * | 2017-08-24 | 2018-06-01 | 南京轴承有限公司 | Hydraulic pressure separating bearing seal structure |
| CN109931401A (en) * | 2017-12-15 | 2019-06-25 | 宁波新宏液压有限公司 | A kind of hydraulic motor piston sealing ring |
| CN210599034U (en) * | 2019-08-05 | 2020-05-22 | 重庆工程职业技术学院 | Sealing ring for single hydraulic prop |
-
2019
- 2019-08-05 CN CN201910715513.3A patent/CN110410116A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053042A (en) * | 1991-02-20 | 1991-07-17 | 张革 | Expandable sealing ring |
| CN2168128Y (en) * | 1993-07-20 | 1994-06-08 | 邢台矿务局橡塑制品厂 | Maintainless hydraulic sealing device |
| JP2007232181A (en) * | 2006-03-03 | 2007-09-13 | Toyota Motor Corp | Rear end sealing structure of crankshaft |
| CN202371170U (en) * | 2011-11-19 | 2012-08-08 | 青岛海力威新材料科技股份有限公司 | High pressure and low pressure resistant Y-shaped sealing ring |
| CN202468992U (en) * | 2011-11-19 | 2012-10-03 | 青岛海力威新材料科技股份有限公司 | Combined through hole sealing ring with low pressure resistance and high pressure resistance |
| CN202768859U (en) * | 2012-08-31 | 2013-03-06 | 王洁 | Self-lubricating pneumatic sealing ring |
| CN103362524A (en) * | 2013-08-03 | 2013-10-23 | 刘立起 | Drum type boosting multi-ring composite sealing handle body |
| CN104565385A (en) * | 2015-01-20 | 2015-04-29 | 马鞍山市荣亿密封材料有限责任公司 | Large-sized internal supercharging shaft sealing device |
| CN207437774U (en) * | 2017-08-24 | 2018-06-01 | 南京轴承有限公司 | Hydraulic pressure separating bearing seal structure |
| CN109931401A (en) * | 2017-12-15 | 2019-06-25 | 宁波新宏液压有限公司 | A kind of hydraulic motor piston sealing ring |
| CN210599034U (en) * | 2019-08-05 | 2020-05-22 | 重庆工程职业技术学院 | Sealing ring for single hydraulic prop |
Non-Patent Citations (1)
| Title |
|---|
| 石端伟, 何理泉: "菱形空腔自紧式密封圈的研制", 润滑与密封, no. 02, pages 34 - 35 * |
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