CN103670281A - Hybrid-sealed cone bit - Google Patents
Hybrid-sealed cone bit Download PDFInfo
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- CN103670281A CN103670281A CN201310737160.XA CN201310737160A CN103670281A CN 103670281 A CN103670281 A CN 103670281A CN 201310737160 A CN201310737160 A CN 201310737160A CN 103670281 A CN103670281 A CN 103670281A
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- gear quarrel
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- pipe
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Abstract
The invention provides a hybrid-sealed cone bit. The hybrid-sealed cone bit comprises bit legs, a journal is arranged at one end of one bit leg, and a cone is arranged at one end of the other bit leg. An oil storage and ventilation hole passage is formed in the bit leg, and one end of the oil storage and ventilation hole passage extends into the journal; an oil passing and air passing hole communicated with the oil storage and ventilation hole passage is formed in the journal; a fragment stop device is arranged in the oil storage and ventilation hole passage and comprises a fragment stop pipe and a piston matched with the fragment stop pipe, wherein a plurality of upper holes and a plurality of lower holes are formed in the two ends of the fragment stop pipe respectively, and the piston is installed in the fragment stop pipe. A full-sealed working mode and a non-sealed working mode are combined in the hybrid-sealed cone bit; on the one hand, the hybrid-sealed cone bit is in a full-sealed state in the early working stage so as to ensure lubrication and cooling of a bearing in the full-sealed state of the bearing; on the other hand, after sealing fails and all lubricating grease leaks, the hybrid-sealed cone bit is in a none-sealed state, high-pressure air can enter a bearing chamber of the cone bit to continue cooling the bearing, and the overall service life of the cone bit is prolonged.
Description
Technical field
The present invention relates to a kind of mechanical drilling drilling tool, relate in particular to a kind of mixing sealing rock bit.
Background technology
Rock bit is that drilling tool is drilled in a kind of application very widely, and it is in probing during rock, by the interaction force between its gear wheel rotation and rock roll, impact grinding, reach the object of destroying rock stratum.Rock bit is when probing, and broken landwaste, dregs may enter into cone bit bearing inside, wear damage cone bit bearing, the application life of shortening rock bit.
At present rock bit is mainly divided three kinds, non-tight, hermetically sealed and semitight drill bit.
Non-tight rock bit is provided with to have to have and flat mouthful manages with the gear quarrel of lower circle port, between upper flat mouth and lower circle port, form the ventilation stack connecting, during the work of non-tight rock bit, need pressure-air to enter bearing by ventilation stack cooling, its cooling effect is general, bearing does not have lubricant medium lubricated, and bit life is shorter.
Hermetically sealed drill bit is provided with oil storage system, in oil storage, bearing arrangement, filled with lubricant grease, that lubricant grease plays is lubricated, the object of cooling bearing, once but after bearing seal inefficacy, lubricant grease will be revealed, rock slag, chip will enter in bearing, cause bearing abrasive wear, and bearing is wear out failure soon.
Semitight drill bit is provided with oil fuel tube and ventilation stack, although it has certain sealing function, the lubricant grease in the rock bit of use the type cannot be guaranteed to fill with, and it can not realize hermetically sealed, has lubricated inadequate problem.Meanwhile, the lubrication oil in oil pipe is easily blown out by pressure-air, affects the effect of lubrication and cooling, and bearing and sealing system easily lost efficacy, and bearing life is limited.
Summary of the invention
The object of the present invention is to provide a kind of rock bit of mixing sealing function that has.
One of for achieving the above object, mixing sealing rock bit of the present invention, it comprises bit leg, be arranged at the axle journal of described bit leg one end, and the gear wheel matching with described axle journal, it is characterized in that, the inside of described bit leg is formed with oil storage and ventilating hole channel, one end of described oil storage and ventilating hole channel extends in described axle journal, in described axle journal, be provided with the logical oily air vent being connected with described oil storage and ventilating hole channel, in described ventilating hole channel, be provided with gear quarrel device, described gear quarrel device comprises gear quarrel pipe, the piston matching with described gear quarrel pipe, and spring, between described gear quarrel pipe and described piston, adopt O-ring seals sealing, described gear quarrel pipe has cavity, described piston, spring fitting is in described cavity, the two ends up and down of described gear quarrel pipe offer respectively some tops hole and some bottoms hole, described piston is arranged in the pore between described some tops hole and some bottoms hole.
As a further improvement on the present invention, on the sidewall of described gear quarrel pipe, be provided with annular boss, described boss and described sidewall are perpendicular.
As a further improvement on the present invention, described top hole and bottom hole is shaped as irregularly-shaped hole.
As a further improvement on the present invention, described irregularly-shaped hole comprises: circular port or laterally cylindrical void or vertical cylindrical void or square opening or delthyrium or five-pointed star hole or irregularly shaped hole.
As a further improvement on the present invention, described piston slides and is arranged in described cavity, in described cavity, be provided with the limiting component that limits described piston position, after described piston and the conflict of described limiting component, the space between described top hole and bottom hole is connected state.
As a further improvement on the present invention, described limiting component is and the integrated base plate of described gear quarrel pipe that described base plate is positioned at the bottom of described gear quarrel pipe.
As a further improvement on the present invention, described oil storage and ventilating hole channel in be formed with the shoulder hole matching with described gear quarrel device.
As a further improvement on the present invention, the upper end of described gear quarrel pipe is also provided with the bar hole circumferentially extending along described gear quarrel pipe, and the distance between described upper end and described bar hole is less than the distance between described upper end and top hole.
Compared with prior art, the invention has the beneficial effects as follows: mixing sealing rock bit of the present invention combines hermetically sealed and unsealed two kinds of mode of operations, first under whole sealing status, realize bearing lubrication under bearing whole sealing status and cooling, after seal failure, lubricating grease have been revealed, convert non-tight state to, pressure-air can enter in cone bit bearing chamber and continue cooling bearing, has significantly extended the overall application life of rock bit.
Accompanying drawing explanation
Fig. 1 is the plan cross-section schematic diagram of a specific embodiment of gear quarrel device in the present invention;
Fig. 2 is the floor map of part-structure of a specific embodiment of mixing of the present invention sealing rock bit.
The specific embodiment
Below in conjunction with each embodiment shown in the drawings, describe technical scheme of the present invention in detail; but should be noted that; these embodiments are not limitation of the present invention; those of ordinary skills are according to these embodiment institute work energy, method or structural equivalent transformation or alternative, within all belonging to protection scope of the present invention.
As shown in Figure 1 and Figure 2, mixing sealing rock bit 200 of the present invention comprises bit leg 201, is arranged at the axle journal 202 of described bit leg 201 one end and the gear wheel 203 matching with described axle journal 202.The inside of described bit leg 201 is formed with oil storage and ventilating hole channel 204, one end of described oil storage and ventilating hole channel 204 extends in described axle journal 202, in described axle journal 202, be provided with the logical oily air vent 205 being connected with described oil storage and ventilating hole channel 204, in described oil storage and ventilating hole channel 204, be equipped with gear quarrel device 100.
Particularly, described gear quarrel device 100 comprises gear quarrel pipe 10, manages 10 piston matching 20 and springs with described gear quarrel.In order to realize excellent sealing between gear quarrel pipe 10 and piston 20, between described gear quarrel pipe 10 and described piston 20, adopt O-ring seals 40 sealings.Described O RunddichtringO 40 is arranged in the cannelure of described piston 20, and and the inside wall of cavity 30 between have certain radial compression amount.Described gear quarrel pipe 10 has cavity, and described piston 20 is arranged in described cavity.In the cavity of spring fitting above piston 20.Further, the two ends up and down of described gear quarrel pipe 10 offer respectively some tops hole 1021 and some bottoms hole 1022, described piston 20 is installed in the pore between described some tops hole 1021 and some bottoms hole 1022, and described pore is also the cavity of pushing off the slag pipe 10.Wherein, top hole 1021 and bottom hole 1022 are pressure-air fresh air inlet and exhaust vent.In the time of in the pore of piston 20 between described some tops hole 1021 and some bottoms hole 1022, the described oil storage sealing system that comprises gear quarrel device 100 is in whole sealing status, now, pressure-air can not enter in the bearing space that bit leg journel 202 coordinates with gear wheel 203 endoporus, the effect of the at this moment performance of the lubricating grease in hermetically sealed chamber lubrication.
Described top hole 1021 be shaped as circular port or laterally cylindrical void or vertical cylindrical void or square opening or delthyrium or five-pointed star hole or all other irregularly-shaped holes, described bottom hole 1022 be shaped as circular port or laterally cylindrical void or vertical cylindrical void or square opening or delthyrium or five-pointed star hole or all other irregularly-shaped holes, above-mentioned alleged irregularly-shaped hole refers to the hole with arbitrary shape.Thereby the shape of top hole 1021 and bottom hole 1022 can be any combination of above-mentioned shape.It should be noted that, the shape of top hole and bottom hole is not limited to above-mentioned cited shape, under certain size, and the irregularly-shaped hole that top hole and bottom hole can have any shape.
Further, on described gear quarrel pipe 10, be provided with annular boss 103, and described boss 103 is perpendicular with the sidewall of pushing off the slag pipe.This boss 103 is convenient to installation and the location of gear quarrel device 100.Correspondingly, in order to match with gear quarrel device 100, in described oil storage and ventilating hole channel 204, there is the shoulder hole 206 matching with described gear quarrel device 100, the boss 103 of gear quarrel device 100 and the edge of opening close contact of this shoulder hole 206.
In addition, described piston 20 slides in described cavity, is provided with the limiting component that limits described piston 20 positions in described cavity, and when described piston 20 and described limiting component touch while leaning on mutually, the space between described top hole and bottom hole is connected state.Thereby within a short period of time, lubricant grease has been revealed, pressure-air can promote piston and slide to gear quarrel pipe lower end, when piston and limiting component touch mutually by time, between space be connected state, the gear device that is cut is converted into non-tight state from sealing state.Thereby, realize rapidly the cooling effect of pressure-air.As a kind of preferred embodiment, described gear quarrel pipe 10 comprises body, described body has diapire 101 and from the extended sidewall 102 of described diapire 101 edge one, described sidewall 102 is perpendicular with described diapire 101, described diapire 101 forms cavity 30 with sidewall 102, and described piston 20 is arranged in described cavity 30.Above-mentioned diapire forms described limiting component, and now bottom hole 1022 is greater than the height of piston 20 apart from the distance of diapire 101 at least partly, thereby makes the space between top hole 1021 and bottom hole 1022 be effective connected state.
In addition, the upper end of described gear quarrel pipe 10 has the bar hole 50 circumferentially extending along described gear quarrel pipe 10, and the distance between described end and described bar hole 50 is less than the distance between described upper end and top hole 1021.The object that described bar hole is set is, after piston being positioned over to gear quarrel pipe, in gear quarrel pipe, also to place spring as above, end in contact on this spring lower end and piston, the end that is provided with bar hole is pinched flat, make flat mouthful of the upper end holddown spring of gear quarrel pipe.This spring upper end is spacing, and lower end and piston close contact are managed in the pore at middle part piston position all the time in gear quarrel.In addition, at spring in the raw or during compressive state, the space between top hole 1021 and bottom hole 1022 can not be communicated with all the time.
In sum, mixing sealing rock bit of the present invention combines hermetically sealed and unsealed two kinds of mode of operations, first under whole sealing status, realize bearing lubrication under bearing whole sealing status and cooling, after seal failure, lubricating grease have been revealed, convert non-tight state to, pressure-air can enter in cone bit bearing chamber and continue cooling bearing, has significantly extended the overall application life of rock bit.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to include in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this manual is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of manual is only for clarity sake, those skilled in the art should make manual as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (8)
1. one kind is mixed sealing rock bit, it comprises bit leg, be arranged at the axle journal of described bit leg one end, and the gear wheel matching with described axle journal, it is characterized in that, the inside of described bit leg is formed with oil storage and ventilating hole channel, one end of described oil storage and ventilating hole channel extends in described axle journal, in described axle journal, be provided with the logical oily air vent being connected with described oil storage and ventilating hole channel, in described ventilating hole channel, be provided with gear quarrel device, described gear quarrel device comprises gear quarrel pipe, the piston matching with described gear quarrel pipe, and spring, between described gear quarrel pipe and described piston, adopt O-ring seals sealing, described gear quarrel pipe has cavity, described piston, spring fitting is in described cavity, the two ends up and down of described gear quarrel pipe offer respectively some tops hole and some bottoms hole, described piston is arranged in the pore between described some tops hole and some bottoms hole.
2. mixing sealing rock bit according to claim 1, is characterized in that, on the sidewall of described gear quarrel pipe, is provided with annular boss, and described boss and described sidewall are perpendicular.
3. rock bit according to claim 1, is characterized in that, described top hole and bottom hole be shaped as irregularly-shaped hole.
4. rock bit according to claim 3, is characterized in that, described irregularly-shaped hole comprises: circular port or laterally cylindrical void or vertical cylindrical void or square opening or delthyrium or five-pointed star hole or irregularly shaped hole.
5. mixing according to claim 1 seals rock bit, it is characterized in that, described piston slides and is arranged in described cavity, in described cavity, be provided with the limiting component that limits described piston position, after described piston and the conflict of described limiting component, the space between described top hole and bottom hole is connected state.
6. mixing sealing rock bit according to claim 5, is characterized in that, described limiting component is and the integrated base plate of described gear quarrel pipe that described base plate is positioned at the bottom of described gear quarrel pipe.
7. mixing sealing rock bit according to claim 1, is characterized in that, is formed with the shoulder hole matching with described gear quarrel device in described oil storage and ventilating hole channel.
8. mixing according to claim 1 seals rock bit, it is characterized in that, the upper end of described gear quarrel pipe is also provided with the bar hole circumferentially extending along described gear quarrel pipe, and the distance between described upper end and described bar hole is less than the distance between described upper end and top hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737160.XA CN103670281B (en) | 2013-12-27 | 2013-12-27 | Mix sealing rock bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737160.XA CN103670281B (en) | 2013-12-27 | 2013-12-27 | Mix sealing rock bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670281A true CN103670281A (en) | 2014-03-26 |
| CN103670281B CN103670281B (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310737160.XA Active CN103670281B (en) | 2013-12-27 | 2013-12-27 | Mix sealing rock bit |
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| CN (1) | CN103670281B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108166929A (en) * | 2018-02-09 | 2018-06-15 | 苏州思丹孚钻具有限公司 | Oil-gas Separation seals rock bit |
| CN109372436A (en) * | 2018-12-28 | 2019-02-22 | 湖北鸣利来冶金机械股份有限公司 | A kind of roller cone bit capable of realizing sealing and non-sealing conversion and conversion method |
| CN109958396A (en) * | 2017-12-22 | 2019-07-02 | 中国石油化工股份有限公司 | A kind of pneumatic drill rock bit device |
| CN114673453A (en) * | 2021-03-12 | 2022-06-28 | 苏州赛莱科斯工具有限公司 | Dual-function pressure compensator for sealing oil storage cavity of mining drill bit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA715919A (en) * | 1965-08-17 | O. Atkinson Gerald | Rock bit with replaceable nozzle | |
| US4428442A (en) * | 1982-05-17 | 1984-01-31 | Smith International, Inc. | Rock bit lubrication system |
| US4805709A (en) * | 1986-01-13 | 1989-02-21 | Drumco | Drill bit and drill assembly |
| CN201679447U (en) * | 2010-03-09 | 2010-12-22 | 武汉科技大学 | A Mining Tri-cone Bit Based on Sliding Lubricating Bearings |
| CN102619471A (en) * | 2012-04-29 | 2012-08-01 | 江西飞龙钻头制造有限公司 | Lubrication system of roller bit |
| CN202467659U (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Mining drill bit for drilling vent of coal mine |
| CN203334964U (en) * | 2012-04-29 | 2013-12-11 | 江西飞龙钻头制造有限公司 | Lubricating device of roller bit |
| CN203640606U (en) * | 2013-12-27 | 2014-06-11 | 苏州思丹孚钻具有限公司 | Hybrid sealing roller cone bit |
-
2013
- 2013-12-27 CN CN201310737160.XA patent/CN103670281B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA715919A (en) * | 1965-08-17 | O. Atkinson Gerald | Rock bit with replaceable nozzle | |
| US4428442A (en) * | 1982-05-17 | 1984-01-31 | Smith International, Inc. | Rock bit lubrication system |
| US4805709A (en) * | 1986-01-13 | 1989-02-21 | Drumco | Drill bit and drill assembly |
| CN201679447U (en) * | 2010-03-09 | 2010-12-22 | 武汉科技大学 | A Mining Tri-cone Bit Based on Sliding Lubricating Bearings |
| CN202467659U (en) * | 2012-01-17 | 2012-10-03 | 苏州新锐合金工具股份有限公司 | Mining drill bit for drilling vent of coal mine |
| CN102619471A (en) * | 2012-04-29 | 2012-08-01 | 江西飞龙钻头制造有限公司 | Lubrication system of roller bit |
| CN203334964U (en) * | 2012-04-29 | 2013-12-11 | 江西飞龙钻头制造有限公司 | Lubricating device of roller bit |
| CN203640606U (en) * | 2013-12-27 | 2014-06-11 | 苏州思丹孚钻具有限公司 | Hybrid sealing roller cone bit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109958396A (en) * | 2017-12-22 | 2019-07-02 | 中国石油化工股份有限公司 | A kind of pneumatic drill rock bit device |
| CN108166929A (en) * | 2018-02-09 | 2018-06-15 | 苏州思丹孚钻具有限公司 | Oil-gas Separation seals rock bit |
| CN109372436A (en) * | 2018-12-28 | 2019-02-22 | 湖北鸣利来冶金机械股份有限公司 | A kind of roller cone bit capable of realizing sealing and non-sealing conversion and conversion method |
| WO2020134912A1 (en) * | 2018-12-28 | 2020-07-02 | 湖北鸣利来合金钻具股份有限公司 | Roller-cone bit capable of switching between sealed and unsealed state and switching method |
| CN114673453A (en) * | 2021-03-12 | 2022-06-28 | 苏州赛莱科斯工具有限公司 | Dual-function pressure compensator for sealing oil storage cavity of mining drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103670281B (en) | 2016-05-18 |
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