CN103343666A - Novel oil storage compensation structure - Google Patents
Novel oil storage compensation structure Download PDFInfo
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- CN103343666A CN103343666A CN2013103114353A CN201310311435A CN103343666A CN 103343666 A CN103343666 A CN 103343666A CN 2013103114353 A CN2013103114353 A CN 2013103114353A CN 201310311435 A CN201310311435 A CN 201310311435A CN 103343666 A CN103343666 A CN 103343666A
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- Prior art keywords
- oil storage
- piston
- compensation structure
- space
- storage compensation
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- 239000004519 grease Substances 0.000 claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims description 17
- 239000011435 rock Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000001447 compensatory effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an oil storage compensation structure which is arranged in an oil hole of a rock-breaking drilling tool. The oil storage compensation structure comprises lubricating grease, a piston, a pressing cover, an elastic piece and a pressure transmission hole, wherein the piston divides the oil hole into a first space and a second space, the lubricating grease is located in the first space of the oil hole, the pressing cover is used for sealing the oil hole, the elastic piece is limited between the piston and the pressing cover, and the pressure transmission hole is communicated with the outside and the second space. The oil storage compensation structure is reliable in sealing, simple in structure, and capable of effectively compensating pressure balance.
Description
Technical field
The present invention relates to a kind of oil storage compensation structure of broken rock drilling tool
Background technology
Oil storage compensation structure commonly used at present is complicated; number of parts is many; be made up of plug, gland, back-up ring, sealing ring, protection cup, oil storage bag, oil storage hole, relief hole is arranged at oil storage hole bottom, the lubricating grease passage that communicates with seal groove, back-up ring, bearing on the hole wall.Wherein, oil storage bag is crucial pressure compensation film, and material and performance requirement are higher, and on the one hand, its bottom has the relief hole of special construction, and in order to regulate the pressure of oil storage system, relieving characteristics requires high; On the other hand; its upper, open end is done radial seal by the rounded lip limit of himself, and its axial seal is added the rounded lip limit of oil storage bag then by two special surfaces of protection cup and oil storage hole; utilize the self-locking on two inclined-planes to realize axial seal, strictness is sealed and matched.Because initial failure appears in its complex structure, the strictness that is sealed and matched in actual use easily.
Summary of the invention
The present invention seeks to: provide a kind of simple in structure, sealing is reliable, pressure balance compensates effective oil storage compensation structure.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.In order to reach one of above-mentioned or partly or all purposes or other purposes, one embodiment of the invention provide a kind of oil storage compensation structure, are arranged at brokenly in the oilhole of rock drilling tool.Described oil storage compensation structure comprises lubricating grease, piston, gland, elastic component and pressure transmission hole; Wherein said piston is divided into first space and second space with described oilhole, and described lubricating grease is positioned at described first space of described oilhole; Described gland is in order to the described oilhole of capping; Described elastic component is limited between described piston and the described gland; And described pressure transmission hole is communicated with extraneous and described second space.
In one embodiment, described pressure transmission hole is arranged on the described gland, to transmit ambient pressure to described second space.
In one embodiment, described oil storage compensation structure also comprises piston tube, and described piston tube is arranged in the oilhole, and described piston tube has be connected first cylindrical hole and second cylindrical hole, described first cylindrical hole is communicated with described oilhole, and described piston and described elastic component are arranged in first cylindrical hole; Wherein the first cylindrical hole diameter is greater than the second cylindrical hole diameter; Described pressure transmission hole is arranged on the described piston tube, is communicated with extraneous and described second cylindrical hole, to transmit ambient pressure to described second cylindrical hole; Corresponding second cylindrical hole of described piston tube partly is provided with seal groove, is provided with sealing ring in the described seal groove.
In one embodiment, described piston is provided with seal groove, is provided with sealing ring in the described seal groove.
Advantage of the present invention is: simple in structure, sealing is reliable, effective compensatory pressure balance
For the above-mentioned of embodiments of the invention and other purposes, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the sectional drawing of the oil storage compensation structure of one embodiment of the invention.
Fig. 2 is the sectional drawing of the oil storage compensation structure of another embodiment of the present invention.
Wherein:
10 broken rock drilling tools
20 oilholes
100,200 oil storage compensation structures
101 lubricating grease
102 pistons
103 glands
104 elastic components
105 pressure transmission holes
106,106 ' seal groove
107,107 ' sealing ring
210 piston tube
211 first cylindrical holes
212 second cylindrical holes
R1 first space
R2 second space
The specific embodiment
About addressing other technologies content, characteristics and effect before the present invention, in the following detailed description that cooperates with reference to graphic embodiment, can clearly present.The direction term of mentioning in following examples, for example: upper and lower, left and right, front or rear etc. only are the directions with reference to annexed drawings.Therefore, the direction term of use is to illustrate not to be to limit the present invention.
Please refer to Fig. 1, present embodiment provides a kind of broken rock drilling tool 10, as the oil storage compensation structure 100 of Hob for cutting rock, is arranged at brokenly in the oilhole 20 of rock drilling tool 10.Oil storage compensation structure 100 comprises lubricating grease 101, piston 102, gland 103, elastic component 104 and pressure transmission hole 105; Wherein be disposed in the oilhole 20 to piston 102 driving fits, and oilhole 200 is divided into the first space R1 and the second space R2, lubricating grease 101 then is positioned at the first space R1 of the oilhole of being cut apart by piston 102 20, and lubricating grease 101 can not enter in the second space R2 because the obstruct of piston 102 is limited in the first space R1; In one embodiment, piston 102 also is provided with seal groove 106, and seal groove 106 is provided with O RunddichtringO 107, to realize obturation effect better, lubricating grease 101 is enclosed within the first space R1.
Bearing (not shown) temperature in broken rock drilling tool 10 raises, and lubricating grease 101 expanded by heating make the pressure in the bearing be higher than external pressure, lubricating grease 101 promotes piston 102, to the motion of gland 103 directions, spring 104 is compressed, forms new balance in oilhole 20 for piston 102; When the pressure in the bearing was lower than external pressure, the second space R2 was in communication with the outside by pressure transmission hole 105, and air push piston 102 inwardly moves, and increased the pressure in the bearing, made pressure reach balance.
Please refer to Fig. 2, another embodiment of the present invention provides a kind of rock drilling tool 10 that is applied to brokenly, and as the oil storage compensation structure 200 of rock bit, its principle is similar to oil storage compensation structure 100, and its difference is summarized as follows.
Oil storage compensation structure 200 also comprises a piston tube 210, piston tube 210 is arranged in the oilhole 20, and piston tube 210 has first cylindrical hole 211 and second cylindrical hole 212 that is connected, first cylindrical hole 211 communicates with oilhole 20, piston 102 is arranged in first cylindrical hole 211, and the lubricating grease 101 in the oilhole 20 still is limited in the first space R1 because of the obstruct of piston 102; In one embodiment, piston 102 also is provided with seal groove 106, and seal groove 106 is provided with O RunddichtringO 107, to realize obturation effect better, lubricating grease 101 is enclosed within the first space R1.Please refer to Fig. 2, the diameter of first cylindrical hole 211 is greater than second cylindrical hole, 212 diameters, and elastic component 104 is limited between piston 102 and second cylindrical hole 212, and pressure transmission hole 105 is arranged on the piston tube 210 and connection is extraneous and second cylindrical hole 212; In an embodiment, also be provided with seal groove 106 ' outside piston tube 210 corresponding second cylindrical holes 212, be provided with sealing ring 107 ' in the seal groove 106 ' so that oilhole 20 interior lubricating grease 101 are isolated from the outside.
Same, bearing (not shown) temperature in broken rock drilling tool 10 raises lubricating grease 101 expanded by heating, make the pressure in the bearing be higher than external pressure, lubricating grease 101 promotes piston 102, and piston 102 moves to gland 103 directions in piston tube 210, spring 104 is compressed, forms new balance; When the pressure in the bearing was lower than external pressure, the second space R2 was in communication with the outside by pressure transmission hole 105, and air push piston 102 inwardly moves, and increased the pressure in the bearing, made pressure reach balance.
The present invention is widely used in the rock bit of all size model and the oil storage compensation system of hobboing cutter, can realize sealing the effect of reliable, effective compensatory pressure balance.
The above, only be the preferred embodiments of the present invention, when not limiting scope of the invention process with this, namely the simple equivalent of doing according to claims of the present invention and invention description content generally changes and modifies, and all still belongs in the scope that patent of the present invention contains.Arbitrary embodiment of the present invention or claims must not reached the disclosed whole purposes of the present invention or advantage or characteristics in addition.In addition, summary part and title only are the usefulness of auxiliary patent document search, are not to limit interest field of the present invention.
Claims (7)
1. an oil storage compensation structure is arranged at brokenly in the oilhole of rock drilling tool, and described oil storage compensation structure comprises lubricating grease, piston, gland, elastic component and pressure transmission hole; Wherein
Described piston is divided into first space and second space with described oilhole, and described lubricating grease is positioned at described first space of described oilhole;
Described gland is in order to the described oilhole of capping;
Described elastic component is limited between described piston and the described gland; And
Described pressure transmission hole is communicated with extraneous and described second space.
2. oil storage compensation structure according to claim 1, it is characterized in that: described pressure transmission hole is arranged on the described gland, to transmit ambient pressure to described second space.
3. oil storage compensation structure according to claim 1, it is characterized in that: also comprise piston tube, described piston tube is arranged in the oilhole, and described piston tube has be connected first cylindrical hole and second cylindrical hole, described first cylindrical hole is communicated with described oilhole, and described piston and described elastic component are arranged in first cylindrical hole.
4. as oil storage compensation structure as described in the claim 3, it is characterized in that: the first cylindrical hole diameter is greater than the second cylindrical hole diameter.
5. as oil storage compensation structure as described in the claim 3, it is characterized in that: described pressure transmission hole is arranged on the described piston tube, is communicated with extraneous and described second cylindrical hole, to transmit ambient pressure to described second cylindrical hole.
6. as oil storage compensation structure as described in the claim 3, it is characterized in that: corresponding second cylindrical hole of described piston tube partly is provided with seal groove, is provided with sealing ring in the described seal groove.
7. as oil storage compensation structure as described in claim 1 or 3, it is characterized in that: described piston is provided with seal groove, is provided with sealing ring in the described seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103114353A CN103343666A (en) | 2013-07-24 | 2013-07-24 | Novel oil storage compensation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103114353A CN103343666A (en) | 2013-07-24 | 2013-07-24 | Novel oil storage compensation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103343666A true CN103343666A (en) | 2013-10-09 |
Family
ID=49278491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103114353A Pending CN103343666A (en) | 2013-07-24 | 2013-07-24 | Novel oil storage compensation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103343666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104419A (en) * | 2023-04-11 | 2023-05-12 | 江苏盖特钨业科技有限公司 | Circulation lubrication alloy drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000352291A (en) * | 1999-06-10 | 2000-12-19 | Koken Boring Mach Co Ltd | Lubricating oil supply device for roller cutter with one end support shaft |
| CN2558754Y (en) * | 2002-06-27 | 2003-07-02 | 江汉石油钻头股份有限公司 | Pressure balancing and oil storage compensating device for cone bit |
| CN1776186A (en) * | 2005-11-28 | 2006-05-24 | 江汉石油钻头股份有限公司 | Additional pressure balance device for roller cone bit bearing cavity |
| CN200978625Y (en) * | 2006-11-29 | 2007-11-21 | 江汉石油钻头股份有限公司 | Roller bit pressure balance and oil-storage compensation device |
| CN101074596A (en) * | 2007-06-19 | 2007-11-21 | 西安石油大学 | Diameter variable location stabilizer |
-
2013
- 2013-07-24 CN CN2013103114353A patent/CN103343666A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000352291A (en) * | 1999-06-10 | 2000-12-19 | Koken Boring Mach Co Ltd | Lubricating oil supply device for roller cutter with one end support shaft |
| CN2558754Y (en) * | 2002-06-27 | 2003-07-02 | 江汉石油钻头股份有限公司 | Pressure balancing and oil storage compensating device for cone bit |
| CN1776186A (en) * | 2005-11-28 | 2006-05-24 | 江汉石油钻头股份有限公司 | Additional pressure balance device for roller cone bit bearing cavity |
| CN200978625Y (en) * | 2006-11-29 | 2007-11-21 | 江汉石油钻头股份有限公司 | Roller bit pressure balance and oil-storage compensation device |
| CN101074596A (en) * | 2007-06-19 | 2007-11-21 | 西安石油大学 | Diameter variable location stabilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104419A (en) * | 2023-04-11 | 2023-05-12 | 江苏盖特钨业科技有限公司 | Circulation lubrication alloy drill bit |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131009 |