CN1502781A - Storage lubricant compensated rubber sealed transmission shaft with cylinder roller thrust bearing - Google Patents
Storage lubricant compensated rubber sealed transmission shaft with cylinder roller thrust bearing Download PDFInfo
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- CN1502781A CN1502781A CNA021490945A CN02149094A CN1502781A CN 1502781 A CN1502781 A CN 1502781A CN A021490945 A CNA021490945 A CN A021490945A CN 02149094 A CN02149094 A CN 02149094A CN 1502781 A CN1502781 A CN 1502781A
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Abstract
The present invention relates to a lubricant compensation rubber seal transmission shaft with cylindrical roller thrust bearing. It is formed from upper and lower radical hard alloy slide bearings, anti-falling mechanism and external shell which are successively placed on the shaft. The anti-falling mechanism is placed over the lower radial hard alloy slide bearing and between the shaft and external shell, between upper and lower radial hard alloy slide bearings are successively placed upper rubber seal, cylindrical roller thrust bearing and lower rubber seal, the space formed from upper and lower rubber seals is the working oil cavity, the cylindrical rolle thrust bearing is placed in the working oil cavity, and between the slide bearings the lubricant compensator is set. Said invention can prolong bearing service life and its work is reliable.
Description
Technical field
The present invention relates to the mud motor power transmission shaft of a kind of use in oil, mine, coalfield, gas field, the oil storage compensation rubber sealing drive shaft with roller thrust bearing that especially a kind of application life is long belongs to machinery manufacturing technology field.
Background technology
Because the restriction of service condition, the mud motor in oil, mine, coalfield, gas field (as helicoid hydraulic motor, turbodrill etc.) all is forced to make tubulose, and diameter is limited.Designing intensity, performance, working life in limited space, can both to satisfy the power drilling tool difficulty that people require very big.The key that improves mud motor complete machine performance is to improve the working life of mud motor power transmission shaft, and domestic and international countless scientific workers are devoted for years to the research in this respect, have obtained some achievements, but also very not satisfactory.Adopt open architecture as present turbodrill and screw drill transmission shaft, utilize drilling well working solution (mud) cooling and lubricating rolling bearing, even select best material and Technology for Heating Processing for use, have only 50～100 hours the average length of working life of its consumable accessory rolling bearing, and the time marquis consumable accessory working life that the drilling well working solution purifies is the longest also to be no more than 150 hours.Prior art also exists the problem of lubricant effect difference when working life is short.
In addition, when power transmission shaft behind the underground work certain hour, be easy to take place the fatigue failure fracture near the dangerouse cross-section of axial end, at this moment, the bottom spindle nose of axle and drill bit or other instrument on it might fall well, the time regular meeting cause extra greater loss.
Summary of the invention
The objective of the invention is to provides a kind of oil storage compensation rubber sealing drive shaft with roller thrust bearing at the deficiencies in the prior art, utilize the higher characteristics of mud motor working environment pressure, mud motor consumable accessory thrust bearings is worked under the oil bath state all the time, and when the lubrication oil in the working oil chamber has a small amount of leakage, the oil storage compensation device can in time replenish to working oil chamber from shoe cream room under drilling well work action of hydraulic force, prolongs the working life of mud motor consumable accessory thrust bearing.
Another purpose of the present invention is at the deficiencies in the prior art, a kind of oil storage compensation rubber sealing drive shaft with roller thrust bearing is provided, it is simple and reasonable for structure, have long application life, and axle and the drill bit on it or other instrument fall well and result in greater loss can prevent in the bottom cross section, junction of radially carbide sliding bearing and axle and other dangerouse cross-section generation fatigue failures fracture the time.Long working life of the present invention, and safe in utilization.
The objective of the invention is to realize by the following technical solutions:
A kind of oil storage compensation rubber sealing drive shaft with roller thrust bearing, it is by axle, top is carbide sliding bearing radially, the bottom is carbide sliding bearing radially, anti-lost mechanism and shell body are formed, wherein, on, bottom radially carbide sliding bearing is provided with on axle in turn, bearing is provided with shell body outward, in the bottom radially above the carbide sliding bearing, be provided with anti-lost mechanism between axle and the shell, radially be provided with the top rubber seal between the carbide sliding bearing in turn in the upper and lower, roller thrust bearing group and bottom rubber seal, top rubber seal and the formed space of bottom rubber seal are working oil chamber, and the roller thrust bearing group is located in the working oil chamber.
Radially also be provided with the oil storage compensation device between the carbide sliding bearing in the upper and lower part.
The oil storage compensation device mainly comprises compensated loop, expansion loop matrix, one-way relief valves, expansion loop inner core, expansion loop urceolus, piston and sealing ring; Compensated loop is close to a side, and the space between expansion loop matrix, expansion loop inner core, expansion loop urceolus and the piston forms shoe cream room, and expansion loop matrix and expansion loop inner core or urceolus upper end are provided with one-way relief valves.
Rubber seal is made up of sealing rotating ring, stationary ring and rubber seal respectively, rubber seal is divided into dynamic seal ring and static seal circle again, wherein, dynamic seal ring is located between sealing rotating ring and the stationary ring, and the static seal circle is located at respectively between sealing rotating ring and the axle and between stationary seal ring and the shell body.
The total progression of roller thrust bearing group is more than the two-stage, and cylindrical roller is single-row or biserial or multiple row, has retainer, and roller diameter is Φ 12～Φ 36mm, and roller length is 10～30mm, and bearing group axial play momentum is 0.1mm～5.0mm.
Cylindrical roller rotation center line and cylindrical roller revolution center line are that power transmission shaft axle center line is perpendicular in the roller thrust bearing.
Be provided with in the roller thrust bearing group and held concurrently damping and compressed the spring of regulating action in advance.
Radially be respectively arranged with a drilling fluid through hole on the axle of position between the carbide sliding bearing on the axle of position between oil storage compensation device and the top rubber seal and in anti-lost mechanism and bottom; Be respectively arranged with an oil filler point and outage at described shell body two ends.
In sum, the invention has the advantages that:
1, utilizes the higher characteristics of mud motor working environment pressure, mud motor consumable accessory thrust bearings is sealed in the working oil chamber, all working part in the seal oil chamber is worked under the oil bath state all the time, and when the lubrication oil in the working oil chamber has a small amount of leakage, the oil storage compensation device can in time replenish the lubrication oil of some from shoe cream room to working oil chamber under drilling well work action of hydraulic force, to prolong the working life of mud motor consumable accessory thrust bearing.
2, the present invention is simple and reasonable for structure, have long working life, and can prevent in the bottom radially carbide sliding bearing and axle combine cross section or other dangerouse cross-section generation fatigue failure fracture the time drill bit or other instrument of axle on it fall well and the bigger loss that causes.
Description of drawings
Fig. 1 is a kind of oil storage compensation rubber sealing drive shaft structural representation with roller thrust bearing of the present invention.
Fig. 2 is a kind of mud motor power transmission shaft of the present invention oil storage compensation device structural representation;
Fig. 3 is a power transmission shaft oil storage compensation device overvoltage one-way relief valves structural representation of the present invention;
Fig. 4 is a radially rubber sealing structure schematic diagram of power transmission shaft of the present invention upper and lower;
Fig. 5 is a power transmission shaft double-row cylindrical roller thrust bearings structural representation of the present invention;
Fig. 6 is a power transmission shaft roller thrust bearing group rubber spring structural representation of the present invention;
Fig. 7 is a power transmission shaft roller thrust bearing dish-shaped-spring stack structural representation of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done detailed description further.
Concrete structure of the present invention such as Fig. 1, Fig. 2 and shown in Figure 3.Mainly radially radially carbide sliding bearing 15, shoe cream room M, working oil chamber H and shell body 7 etc. are formed carbide sliding bearing 5, oil storage compensation device 1, top rubber seal 2, roller thrust bearing group 6, bottom rubber seal 3, anti-lost mechanism 17, bottom by the top that is provided with in regular turn on axle 4, the axle 4.Top radially in the carbide sliding bearing moving-coil 5a, compensated loop 13, top rubber seal in ring 2a, the bottom rubber seal in ring 3a, the anti-lost mechanism ring 17a, bottom radially carbide sliding bearing moving-coil 15a etc. be located at successively on spools 4, by be close to top radially the clamp nut of carbide sliding bearing moving-coil 5a be pressed on the axle 4, constitute the rotating part of power transmission shaft; The top radially quiet circle of carbide sliding bearing 5b, oil storage compensation device 1, top rubber seal outer shroud 2b, bottom rubber seal outer shroud 3b, the anti-lost outer shroud 17b of mechanism etc. is located in the shell body 7 successively, by the bottom radially the quiet circle of carbide sliding bearing 15b be pressed in the shell body 7, constitute the stationary part of power transmission shaft.
Involved " oil storage compensation device " utilized patent of invention " mud motor oil storage sealing compensation structure " (patent designer: Tan Chunfei among the present invention, the patent No.: ZL00234224.3) part technology, different places be that all movable sealings and static seal all are radially rubber seals among the present invention, and rotary dynamic seal is end face seal in the patent " mud motor oil storage sealing compensation structure ", and all the other movable sealings and static seal are radially rubber seal.
As shown in Figure 4, be upper and lower part of the present invention rubber sealing structure schematic diagram radially.Figure middle and upper part rubber seal 2 by sealing rotating ring 2a, stationary ring 2b and on sealing ring 16 constitute, wherein sealing ring 16a, 16e and 16f are static seal, and sealing ring 16b, 16c and 16d are rotary dynamic seal.Bottom rubber seal 3 by sealing rotating ring 3a, stationary ring 3b and on sealing ring 18 constitute, wherein sealing ring 18a, 18e and 18f are static seal, and sealing ring 18b, 18c and 18d are rotary dynamic seal.Sealing rotating ring 2a and 3a external surface are all handled through case hardening, make it have higher hardness and excellent abrasive resistance.Multiple-sealed owing to having, therefore drilling fluid also can't enter in the seal oil chamber under elevated pressures.
As shown in Figure 2, be the structural representation of oil storage compensation device of the present invention.Oil storage compensation device 1 is positioned at working oil chamber H top among the figure, and it mainly comprises components such as expansion loop matrix 14, one-way relief valves 8, expansion loop inner core 12, expansion loop urceolus 11, piston 10 and sealing ring 9.Oil storage compensation device matrix 14 is provided with lubrication oil through hole F and G, and the upper end of expansion loop inner core 12 or urceolus 11 and resilient sleeve cartridge type one-way relief valves 8 contact positions are provided with a vertical fluting B.Shoe cream room M is linked to each other by ring-type grease channel C with working oil chamber H.Between oil storage compensation device 1 and compensated loop 13 ring-type drilling well working solution passage D.One-way relief valves 8 can be opened automatically when causing the oil pocket internal pressure too high when the generation gas in working oil chamber H and the shoe cream room M or because of other reason, allows gas or too much lubrication oil to overflow, and does not allow the drilling well working solution to enter in the seal oil chamber from annular space.Arrow is represented drilling well working solution flow direction among Fig. 1 and Fig. 2.The axle of position is provided with a drilling fluid through hole N between oil storage compensation device and the top rubber seal, anti-lost mechanism and bottom radially between the carbide sliding bearing position spool be provided with a drilling fluid through hole Q.When mud motor have during in underground work a small amount of drilling fluid from top radially the gap between carbide sliding bearing rotating ring 5a and the stationary ring 5b enter axle 4 endoporus by annular channel D and through hole N, meanwhile the pressure of drilling fluid is delivered among the H by piston 10 and annular channel C, lubrication oil among the shoe cream room M enters working oil chamber H from channel C, moves to shoe cream room M position topmost up to piston 10.
When mud motor during in underground work because bit pressuredrop is bigger, a small amount of drilling fluid in axle 4 endoporus can be under pressure enters annular space between drill string and the well from through hole Q along direction shown in the arrow among Fig. 1 from the gap between bottom carbide sliding bearing rotating ring 15a and the stationary ring 15b.
Be respectively arranged with an oil filler point L and outage P at shell body 7 two ends, inject lubrication oil to shoe cream room M, working oil chamber H and ring-type grease channel C with convenient.
The present invention has utilized the higher characteristics of mud motor working environment pressure, mud motor consumable accessory thrust bearings is sealed in the working oil chamber H, all working part in the seal oil chamber is worked under the oil bath state all the time, and when the lubrication oil in the working oil chamber has a small amount of leakage, oil storage compensation device 1 can in time replenish the lubrication oil of some from shoe cream room M to working oil chamber H under drilling well work action of hydraulic force, to prolong the working life of mud motor consumable accessory thrust bearing.
In addition, bottom of the present invention radially is provided with anti-lost mechanism 17 between the axle of carbide sliding bearing 15 tops, lower seal 3 belows and the shell body, and the diameter of evagination shoulder that encircles 17a anti-lost mechanism in is greater than the anti-lost outer shroud 17b of mechanism endoporus minimum diameter and/or the bottom quiet circle of carbide sliding bearing 15b internal diameter radially.
The life-span that the key of raising mud motor power transmission shaft working life is how to improve the power transmission shaft consumable accessory.The main consumable accessory of mud motor power transmission shaft is a thrust bearing.Existing transmission shaft structure is born the consumable accessory roll angle contact thrust ball bearing of axial load, under drilling fluid (mud) cooling and lubricating condition, work, high rigidity solid phase particles (as quartz sand) in the drilling fluid becomes the abrasive particle medium, cause thrust bearings to descend quick-wearing in drilling fluid abrasive wear condition, the working life of thrust bearings does not reach the level of people's expectation, generally has only 50～100 hours.We know, between roller thrust bearing when work cylindrical roller 20c or 21c and supporting disk thrust disc 20a and 20d or 21a and the 21d is that line contact (20b and 21b are retainer among Fig. 5), and roll angle is to contact between steel ball and the supporting disk when contacting thrust ball bearing and working.Therefore, the supporting capacity of roller thrust bearing is bigger more than 100 times than the supporting capacity of roll angle contact thrust ball bearing, and the working life of the service life as compared roll angle of roller thrust bearing contact thrust ball bearing is much longer far away under same load and linear velocity condition.The present invention is sealed in roller thrust bearing in the oil pocket, and the working life that has the oil storage compensation rubber sealing drive shaft of roller thrust bearing so just can be satisfied the demand.
Cylindrical roller in the roller thrust bearing of the present invention is single-row or biserial or multiple row, roller diameter is Φ 12～Φ 36mm, roller length is 10～30mm, roller thrust bearing has retainer, and cylindrical roller rotation center line and cylindrical roller revolution center line are that power transmission shaft axle center line is perpendicular.
The present invention adopts multistage thrust bearing, makes the hydraulic load of power transmission shaft or the pressure of the drill load uniform to thrust bearings at different levels, and the load that every grade of thrust bearing is born is less, guarantees that novel power transmission shaft is longer than existing power transmission shaft working life.In order to guarantee that load can be uniform reliably to thrust bearings at different levels, improve the precision during except that processing and assembling, also between the thrust bearing supporting disk, be provided with spring 19 or 22 (as rubber spring and dish-shaped-spring stack, its shape and structure is shown in Fig. 6,7).Spring can also effectively reduce the dynamic load that power transmission shaft is subjected to when guaranteeing thrust bearing co-ordinations at different levels, avoid bearing generation impact failure.
The radial clearance of the radially carbide sliding bearing of roller thrust bearing group above and below is 0.1mm～0.8mm, top radially carbide sliding bearing rubbing surface length is 50～200mm, bottom radially carbide sliding bearing rubbing surface length is 100～300mm, so just can guarantee that the thrust bearing in the power transmission shaft only bears axial load, only allow the drilling fluid that contains in right amount than the granule particle enter in the bearing bore, carbide sliding bearing radially is lubricated and cools off, do not influence the jeting effect of drill bit again.Radially carbide sliding bearing moving-coil outer round surface and quiet circle internal circular surfaces are inlaid with wearable hard alloy, the hardness height of carbide alloy, abrasion resistance is good, can be under the bad working environments condition works fine, the life-span is longer.
In addition, for preventing that axle from reaching the fracture of near dangerouse cross-section or other dangerouse cross-section and causing all the other component of well inter-axle shaft not fall well from the W-W cross section, this novel practical has designed anti-lost mechanism.The diameter of the evagination shoulder of ring is all bigger than anti-lost mechanism outer shroud endoporus minimum diameter and/or the quiet circle internal diameter of power transmission shaft bottom carbide sliding bearing in the anti-lost mechanism of power transmission shaft, when axle behind the underground work certain hour during W-W cross section and other dangerouse cross-section generation fatigue failures fracture, axle and drill bit or other instrument on it might fall well.The present invention can stop axle and last other instrument of axle not to fall well after above-mentioned anti-lost mechanism has been arranged, in order to avoid cause bigger loss.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1, a kind of oil storage compensation rubber sealing drive shaft with roller thrust bearing, it is by axle, top is carbide sliding bearing radially, the bottom is carbide sliding bearing radially, anti-lost mechanism and shell are formed, wherein, on, bottom radially carbide sliding bearing is provided with on axle in turn, bearing is provided with shell body outward, the bottom is the carbide sliding bearing top radially, be provided with anti-lost mechanism between axle and the shell, it is characterized in that: radially be provided with the top rubber seal between the carbide sliding bearing in turn in the upper and lower, roller thrust bearing group and bottom rubber seal, top rubber seal and the formed space of bottom rubber seal are working oil chamber, and the roller thrust bearing group is located in the working oil chamber.
2, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 1 is characterized in that: radially also be provided with the oil storage compensation device between the carbide sliding bearing in the upper and lower part.
3, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 2 is characterized in that: described oil storage compensation device mainly comprises compensated loop, expansion loop matrix, one-way relief valves, expansion loop inner core, expansion loop urceolus, piston and sealing ring; Compensated loop is close to a side, and the space between expansion loop matrix, expansion loop inner core, expansion loop urceolus and the piston forms shoe cream room, and expansion loop matrix and expansion loop inner core or urceolus upper end are provided with one-way relief valves.
4, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 1, it is characterized in that: described rubber seal is made up of sealing rotating ring, stationary ring and rubber seal respectively, rubber seal is divided into dynamic seal ring and static seal circle again, wherein, dynamic seal ring is located between sealing rotating ring and the stationary ring, and the static seal circle is located at respectively between sealing rotating ring and the axle and between stationary seal ring and the shell.
5, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 1, it is characterized in that: the total progression of described roller thrust bearing group is more than the two-stage, cylindrical roller is single-row or biserial or multiple row, have retainer, roller diameter is Φ 12～Φ 36mm, roller length is 10～30mm, and bearing group axial play momentum is 0.1mm～5.0mm.
6, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 5 is characterized in that: cylindrical roller rotation center line and cylindrical roller revolution center line are that power transmission shaft axle center line is perpendicular in the described roller thrust bearing.
7, the oil storage compensation rubber sealing drive shaft with roller thrust bearing according to claim 5 is characterized in that: be provided with in the described roller thrust bearing group and held concurrently damping and compressed the spring of regulating action in advance.
8, according to claim 1 or 2 or 3 or 4 described oil storage compensation rubber sealing drive shafts, it is characterized in that: radially be respectively arranged with a drilling fluid through hole on the axle of position between the carbide sliding bearing on the axle of position between oil storage compensation device and the top rubber seal and in anti-lost mechanism and bottom with roller thrust bearing; Be respectively arranged with an oil filler point and outage at the shell body two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149094 CN1274938C (en) | 2002-11-22 | 2002-11-22 | Storage lubricant compensated rubber sealed transmission shaft with cylinder roller thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02149094 CN1274938C (en) | 2002-11-22 | 2002-11-22 | Storage lubricant compensated rubber sealed transmission shaft with cylinder roller thrust bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502781A true CN1502781A (en) | 2004-06-09 |
| CN1274938C CN1274938C (en) | 2006-09-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02149094 Expired - Fee Related CN1274938C (en) | 2002-11-22 | 2002-11-22 | Storage lubricant compensated rubber sealed transmission shaft with cylinder roller thrust bearing |
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| Country | Link |
|---|---|
| CN (1) | CN1274938C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633425A (en) * | 2015-02-11 | 2015-05-20 | 胜利油田德利实业有限责任公司 | Downhole mechanical speed reducer lubricating device |
| CN109838205A (en) * | 2017-11-27 | 2019-06-04 | 中石化石油工程技术服务有限公司 | A kind of mechanical vibratory impulse motor |
| CN116950579A (en) * | 2023-09-15 | 2023-10-27 | 山东兆鑫石油工具有限公司 | Underground compensator with bidirectional compensation function |
-
2002
- 2002-11-22 CN CN 02149094 patent/CN1274938C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633425A (en) * | 2015-02-11 | 2015-05-20 | 胜利油田德利实业有限责任公司 | Downhole mechanical speed reducer lubricating device |
| CN109838205A (en) * | 2017-11-27 | 2019-06-04 | 中石化石油工程技术服务有限公司 | A kind of mechanical vibratory impulse motor |
| CN116950579A (en) * | 2023-09-15 | 2023-10-27 | 山东兆鑫石油工具有限公司 | Underground compensator with bidirectional compensation function |
| CN116950579B (en) * | 2023-09-15 | 2023-11-21 | 山东兆鑫石油工具有限公司 | Underground compensator with bidirectional compensation function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1274938C (en) | 2006-09-13 |
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