CN101776096B - Oil distribution disc of power head - Google Patents
Oil distribution disc of power head Download PDFInfo
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- CN101776096B CN101776096B CN2009102156403A CN200910215640A CN101776096B CN 101776096 B CN101776096 B CN 101776096B CN 2009102156403 A CN2009102156403 A CN 2009102156403A CN 200910215640 A CN200910215640 A CN 200910215640A CN 101776096 B CN101776096 B CN 101776096B
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- oil distribution
- distribution casing
- power head
- unit head
- lining
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Abstract
The invention discloses an oil distribution disc of a power head, which comprises a body of the oil distribution disc of the power head and a main shaft of the power head and also comprises a bush, an oil passage and compression rings, wherein the bush is arranged between the body of the oil distribution disc of the power head and the main shaft of the power head; the oil passage is arranged between the body of the oil distribution disc of the power head and the bush; and the compression rings are arranged on two end surfaces of the body of the oil distribution disc of the power head and are in direct contact with the bush. By additionally arranging the bush and the oil passage on the body of the oil distribution disc of the power head, the oil distribution disc of the power head provided by the invention avoids the direct contact of the body of the oil distribution disc of the power head and the main shaft of the power head, thereby reducing the abrasion between the body of the oil distribution disc of the power head and the main shaft of the power head; the radial clearance between the bush and the main shaft of the power head is reduced to ensure the sealing effect between the oil distribution disc of the power head and the main shaft of the power head; and the additional arrangement of the oil passage ensures the sealing property between the main body of the oil distribution disc of the power head and the bush and the sealing property between the oil distribution disc of the power head and the main shaft of the power head, thereby ensuring the sealing effect between the oil distribution disc of the power head and the main shaft of the power head.
Description
Technical field
The present invention relates to particularly relate to a kind of unit head oil distribution casing with hydraulic chuck rig and the technical field that has sealing revolution oil duct device.
Background technique
The unit head oil distribution casing is widely used in the rig with hydraulic chuck; Referring to shown in Figure 1, the axial oil circuit of the annular oil groove on unit head oil distribution casing 106 and the dynamic head main spindle 105, dynamic head main spindle 105 and chuck 108 and dynamic head main spindle 105 cooperate with the radially oil circuit of chuck 108 and have constituted sealing revolution oil duct.During rig work, oil hydraulic motor can drive dynamic head main spindle 105 and chuck 108 rotations through reduction gear box.When control system is opened oil circuit; High-voltage oil liquid gets into from fuel inlet fitting 101, after filtering through filter 102, gets into unit head oil distribution casing 106 through core pipe 103; And through sealing revolution oil duct entering chuck 108 inner chambers; Thereby packing element 107 is produced pressure, and then promote slips 109 and hold drilling rod 104 tightly, drilling rod 104 is rotated together.When oil circuit was closed, the oil pressure in the sealing revolution oil duct reduced, the power of holding tightly the deficiency of slips 109, thus make slips 109 unclamp drilling rod 104, drilling rod 104 promptly quits work.
Wherein, Referring to shown in Figure 2; Match between the main shaft 105 of unit head oil distribution casing 106 and unit head; Both can reduce the leakage of fluid in the sealing revolution oil duct, again can and dynamic head main spindle 105 between form oil film, thereby reduced the wearing and tearing between unit head oil distribution casing 106 and the dynamic head main spindle 105.Unit head oil distribution casing 106 has the double action of sliding bearing sleeve and seal ring simultaneously.
But, when the unit head oil distribution casing uses as seal ring, less radial clearance must be arranged; Reducing its leakage rate, and when using, can not arbitrarily reduce radial clearance again as sliding bearing sleeve; Can not form oil film otherwise can cause, thereby cause the wearing and tearing between unit head oil distribution casing and the main shaft.The unit head oil distribution casing plays sliding bearing sleeve and seal ring can't be well accomplished.And when rig was worked, the dynamic head main spindle of rotation inevitably had some offsets; Thereby can cause producing wearing and tearing between dynamic head main spindle and the unit head oil distribution casing, the effect of the seal ring of unit head oil distribution casing also can be destroyed naturally, produces oil liquid leakage; The leakage of fluid and then the oil pressure in sealing revolution oil duct gets into the packing element chamber is descended; The power of holding tightly the deficiency of slips, moment of torsion descend, and cause the drilling rod can't proper functioning.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of unit head oil distribution casing, to realize the sealing between unit head oil distribution casing and the dynamic head main spindle and to reduce the purpose of wearing and tearing between the two.
For realizing above-mentioned purpose, the present invention provides following technological scheme:
A kind of unit head oil distribution casing comprises unit head oil distribution casing body and dynamic head main spindle, also comprises:
Be arranged on the lining between said unit head oil distribution casing body and the said dynamic head main spindle;
Be arranged on the oil circuit between said unit head oil distribution casing body and the said lining;
Be arranged on the pressure ring on the said unit head oil distribution casing body both ends of the surface, and directly contact with said lining, the oil circuit between said unit head oil distribution casing body and the said lining has constituted the oil circuit of a sealing.
Preferably, above-mentioned unit head oil distribution casing contacts the area of side less than the area of this side opposing side with said pressure ring on the said lining.
Preferably, above-mentioned unit head oil distribution casing also comprises three rest pins, and said three rest pins are evenly distributed on the radial surface of said unit head oil distribution casing body.
The invention provides a kind of unit head oil distribution casing, on unit head oil distribution casing body,, avoided unit head oil distribution casing body to contact, thereby reduced wearing and tearing between the two with the direct of dynamic head main spindle through increasing lining and oil circuit.Lining then can be followed rotation, circular runout and the axial displacement of dynamic head main spindle and produced corresponding motion, thereby can guarantee the sealing effect between unit head oil distribution casing and the dynamic head main spindle through the radial clearance between minimizing and the dynamic head main spindle.And oil circuit has guaranteed between unit head oil distribution casing body and the lining and the sealing between unit head oil distribution casing and the dynamic head main spindle, and then has guaranteed the sealing effect between unit head oil distribution casing and the dynamic head main spindle for the oil circuit of sealing.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art; To do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure diagram of existing rig medium power head;
Fig. 2 is the structural representation of existing rig medium power head oil distribution casing;
Fig. 3 is unit head oil distribution casing embodiment's one a provided by the present invention structural representation;
Fig. 4 is unit head oil distribution casing embodiment's two a provided by the present invention structural representation;
Fig. 5 is the structure diagram of the positioning supports of an available dynamic oil distribution casing;
Fig. 6 is the structure diagram of the positioning supports of the unit head oil distribution casing that the specific embodiment of the invention provided.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technological scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention provides a kind of unit head oil distribution casing, to realize the sealing between unit head oil distribution casing and the dynamic head main spindle and to reduce the purpose that it weares and teares between the two.
See also Fig. 3, Fig. 3 is unit head oil distribution casing embodiment's one a provided by the present invention structural representation.
The invention provides a kind of unit head oil distribution casing, comprise unit head oil distribution casing body 303, lining 302, pressure ring 301 and oil circuit 305,
Wherein, 106 among unit head oil distribution casing body 303 and Fig. 2 is two identical different structures of function.
Flow into a part of fluid in the oil circuit 305, this part fluid has certain pressure, can produce certain axial pressure to lining 302, thereby can reduce the friction pressure that 302 pairs of pressure rings of lining 301 produce, and has slowed down the wearing and tearing between pressure ring 301 and the lining 302.And the fluid in the oil circuit 305 can play lubricated effect to lining 302, makes rotation and circular runout that it can be smooth, thereby slows down its wearing and tearing, and then has guaranteed the durability of unit head.In addition; Except guaranteeing its sealing through the radial clearance that reduces between lining 302 and the dynamic head main spindle 304 as far as possible; Be full of fluid in the oil circuit 305; It has constituted the interface of a sealing, thereby has guaranteed between unit head oil distribution casing body 303 and the lining 302 and the sealing between unit head oil distribution casing 303 and the dynamic head main spindle 304, and then has guaranteed the sealing effect between whole unit head oil distribution casing and the dynamic head main spindle 304.Relatively and existing technology, this oil distribution casing has had better sealing effect and anti-wear effect.
Good sealing property between unit head oil distribution casing and the dynamic head main spindle; Make the oil pressure that gets in the packing element through sealing revolution oil duct be guaranteed; Thereby make slips have the enough power of holding tightly; The power of holding tightly that drilling rod is produced enough drives drilling rod and turns round normally, and then has guaranteed the normal operation of whole rig.
Unit head oil distribution casing provided by the present invention through increasing lining and oil circuit, has avoided unit head oil distribution casing body to contact with the direct of dynamic head main spindle on unit head oil distribution casing body, thereby has reduced wearing and tearing between the two.Lining then can be followed rotation, circular runout and the axial displacement of dynamic head main spindle and produced corresponding motion, thereby can guarantee the sealing effect between unit head oil distribution casing and the dynamic head main spindle through the radial clearance between minimizing and the dynamic head main spindle.And the increase of oil circuit has also guaranteed between unit head oil distribution casing body and the lining and the sealing between unit head oil distribution casing and the dynamic head main spindle, and then has guaranteed the sealing effect between unit head oil distribution casing and the dynamic head main spindle.
See also Fig. 4, Fig. 4 is unit head oil distribution casing embodiment's two a provided by the present invention structural representation.
Present embodiment and embodiment's one difference be, lining 306 is for having the lining of convex shoulder, promptly contacts the area of side less than the area of this side opposing side with pressure ring 301 on the lining 306.Other parts all have identical structure and annexation with embodiment one, repeat no more here.
The convex shoulder of lining 306 can better be realized axial release of pressure with cooperating of balance oil circuit, makes lining reach balance, accomplishes to reduce the wear extent of lining 306 and pressure ring 301 as far as possible.
Lining 306 contacts with pressure ring 301; Can form one deck oil film between convex shoulder that lining 306 is provided with and the smooth pressure ring 301; Oil film has played lubricated effect to lining 306, thereby makes rotation and the circular runout that lining 306 can be smooth, and then has reduced the wearing and tearing between itself and the pressure ring 301.And the wearing and tearing of lining convex shoulder can not have influence on the sealing effect of sealing revolution oil duct, have guaranteed the proper functioning of drilling rod.
The convex shoulder of lining 306 can better be realized axial release of pressure with cooperating of oil circuit 305; The fluid that is sealed in the oil circuit 305 has certain pressure P; The inboard area S1 effect of itself and lining 306 can produce the inboard fluid pressure F1 of a lining, and the value of F1 is pressure P and area S1 product.The a part of fluid that is sealed in the oil circuit 305 flows into the convex shoulder part of lining 306, can produce the counterpressure F2 of a liquid to the convex shoulder of lining 306, and the value of F2 is the product of pressure P and convex shoulder area S2.The counterpressure F2 that the convex shoulder branch produces can offset the pressure that 306 pairs of pressure rings 301 of a part of lining are produced, thereby has reduced the friction pressure of 306 pairs of pressure rings 301 of lining, has slowed down the wearing and tearing of lining 306 with pressure ring 301.Through changing the convex shoulder area S2 of lining 306; Can change the counterpressure F2 that lining 306 convex shoulders are produced; When counterpressure F2, F3 (lining 306 overcomes the frictional force of dynamic head main spindle axial displacement) and F4 (lining 306 overcome and pressure ring 301 between the power that friction produced) reach balance with value and lining 306 inside pressure F1 the time; This moment, lining 306 reached balance, and it is minimum that the wear extent between lining 306 and the pressure ring 301 reaches.
Unit head oil distribution casing provided by the present invention is avoided the wearing and tearing between dynamic head main spindle and the unit head oil distribution casing, and the convex shoulder of unit head oil distribution casing lining cooperates with oil circuit, has reduced the wear extent between lining and the pressure ring effectively, thereby has improved its working life.In addition; Even wearing and tearing appear in the convex shoulder of the lining of unit head oil distribution casing and pressure ring; Can not influence the stability of oil pressure in the sealing revolution oil duct yet, make oil pressure can reach the scope of designing requirement, thereby can satisfy the requirement of the corresponding power of holding tightly; Improve the working life of unit head, guaranteed the proper functioning of drilling rod.When lining and pressure ring occur than galling after longer service time, also only need transposing lining and pressure ring to get final product, and need not to change unit head oil distribution casing and dynamic head main spindle, this greatly reduces cost, has improved the working life of unit head greatly.
In addition, see also Fig. 5 and Fig. 6, Fig. 5 is the structure diagram of the positioning supports of an available dynamic oil distribution casing, and Fig. 6 is the structure diagram of the positioning supports of the unit head oil distribution casing that the specific embodiment of the invention provided.
Unit head oil distribution casing provided by the present invention also comprises three rest pins, is used for supporting whole unit head oil distribution casing, thus guarantee its stability with to neutrality.
Rest pin 601, rest pin 602, rest pin 603 are evenly distributed on the radial surface of said unit head oil distribution casing body, on three orientation, distribute suffered power uniformly, and then have guaranteed the stability of unit head oil distribution casing.
In the existing technology, adopt the rest pin 501 of radial symmetric to come supporting motive force head oil distribution casing on the unit head oil distribution casing with rest pin 502.Present technique personnel it is understandable that, adopt supported at three point, the suffered impulse force of a distributed power oil distribution casing uniformly, and can in and the suffered power of all directions, and then guarantee its stability.Adopt supported at three point, can make between the Kong Yuxin pipe on the unit head oil distribution casing, have well to neutrality between unit head oil distribution casing and the dynamic head main spindle.Than 2 supports, the stability of supported at three point and better to neutrality.
Unit head oil distribution casing provided by the present invention adopts three rest pins to support, thereby has better realized the stability of unit head oil distribution casing and to neutrality.
Unit head oil distribution casing provided by the present invention is applicable to that mainly the rig neutralization of band hydraulic chuck has in the sealing revolution oil duct device.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the present invention.Multiple modification to embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiments shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
The above only is an embodiment of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (3)
1. a unit head oil distribution casing comprises unit head oil distribution casing body and dynamic head main spindle, it is characterized in that, also comprises:
Be arranged on the lining between said unit head oil distribution casing body and the said dynamic head main spindle;
Be arranged on the oil circuit between said unit head oil distribution casing body and the said lining;
Be arranged on the pressure ring on the said unit head oil distribution casing body both ends of the surface, and directly contact with said lining, the oil circuit between said unit head oil distribution casing body and the said lining has constituted the oil circuit of a sealing.
2. unit head oil distribution casing according to claim 1 is characterized in that, contacts the area of side less than the area of this side opposing side with said pressure ring on the said lining.
3. unit head oil distribution casing according to claim 1 is characterized in that, also comprises three rest pins, and said three rest pins are evenly distributed on the radial surface of said unit head oil distribution casing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102156403A CN101776096B (en) | 2009-12-30 | 2009-12-30 | Oil distribution disc of power head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102156403A CN101776096B (en) | 2009-12-30 | 2009-12-30 | Oil distribution disc of power head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776096A CN101776096A (en) | 2010-07-14 |
| CN101776096B true CN101776096B (en) | 2012-06-13 |
Family
ID=42512648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102156403A Expired - Fee Related CN101776096B (en) | 2009-12-30 | 2009-12-30 | Oil distribution disc of power head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101776096B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3462159A (en) * | 1966-06-17 | 1969-08-19 | Bbc Brown Boveri & Cie | Floating-ring type shaft seal |
| FR2605379A1 (en) * | 1986-10-16 | 1988-04-22 | Gamet Precision | ANNULAR ROTATING HYDRAULIC JOINT WITH STABILIZED TEMPERATURE |
| CN1089709A (en) * | 1993-12-16 | 1994-07-20 | 冶金工业部自动化研究院 | Revolving joint for high speed and high pressure hydraulic means |
| CN201246118Y (en) * | 2008-09-05 | 2009-05-27 | 煤炭科学研究总院重庆研究院 | Oil cylinder built-in type hydraulic clamping chuck |
| CN201258699Y (en) * | 2008-05-24 | 2009-06-17 | 徐州徐工筑路机械有限公司 | Novel slurry rotary joint |
-
2009
- 2009-12-30 CN CN2009102156403A patent/CN101776096B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3462159A (en) * | 1966-06-17 | 1969-08-19 | Bbc Brown Boveri & Cie | Floating-ring type shaft seal |
| FR2605379A1 (en) * | 1986-10-16 | 1988-04-22 | Gamet Precision | ANNULAR ROTATING HYDRAULIC JOINT WITH STABILIZED TEMPERATURE |
| CN1089709A (en) * | 1993-12-16 | 1994-07-20 | 冶金工业部自动化研究院 | Revolving joint for high speed and high pressure hydraulic means |
| CN201258699Y (en) * | 2008-05-24 | 2009-06-17 | 徐州徐工筑路机械有限公司 | Novel slurry rotary joint |
| CN201246118Y (en) * | 2008-09-05 | 2009-05-27 | 煤炭科学研究总院重庆研究院 | Oil cylinder built-in type hydraulic clamping chuck |
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| Publication number | Publication date |
|---|---|
| CN101776096A (en) | 2010-07-14 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20211230 |