CN201827056U - Crankshaft for drill pump - Google Patents
Crankshaft for drill pump Download PDFInfo
- Publication number
- CN201827056U CN201827056U CN2010205818748U CN201020581874U CN201827056U CN 201827056 U CN201827056 U CN 201827056U CN 2010205818748 U CN2010205818748 U CN 2010205818748U CN 201020581874 U CN201020581874 U CN 201020581874U CN 201827056 U CN201827056 U CN 201827056U
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- CN
- China
- Prior art keywords
- bent axle
- journal
- oil
- journals
- crankshaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a crankshaft for a drill pump, which comprises a crankshaft body, wherein the crankshaft body is provided with main journals (1), connecting rod journals (2) and gear journals (3), wherein the main journals (1) and the connecting rod journals (2) are alternatively arranged, the gear journals (3) are positioned at the two ends of the crankshaft body, the connecting rod journals (2) are provided with oil outlets (2a), the adjacent oil outlets (2a) are communicated through an oil passage (4), the gear journals (3) are provided with oil inlet holes (3a), and the oil inlets (3a) are directly communicated with the adjacent oil outlets (2a). The crankshaft has a simple structure; as a lubricating oil passage, the oil inlets and the oil outlets of the crankshaft body are designed, the crankshaft solves the problem that the lower connecting journal and a bearing bush of the drill pump can not be lubricated better under the situation with low rotating speed and high load.
Description
Technical field
The utility model belongs to petroleum and natural gas drilling equipment field, relates to a kind of bent axle that is used for drilling pump concretely.
Background technique
Drilling mud pump is described as rig " heart ", gets out first mouthful of rig with commercial value from the whole world and uses drilling mud pump, and the history in more than 100 year has been arranged.This 100 for many years, the rig slurry pump with commercial value all is the triplex pumps that adopt.Nearest more than 10 years, people begin constantly to explore exploitation five cylinder pumps, because of five cylinder pumps are compared with triplex pump, have the pressure surge that reduced to discharge medium, enlarge range of flow, cancelled traditional shock absorber for output, improved the life-span of discharging fluid cylinder, simultaneously the volume of drilling pump is reduced gently, advantages such as weight saving, but all very difficult because of five cylinder pump manufacturings maintenance.
Because of five cylinder pumps can not be used for reference the bent axle of triplex pump, because of the bent axle of triplex pump has following several significant disadvantages:
The crankshaft main journal of first and third cylinder pump and rod journal all are the rolling bearings that adopts, bent axle can only be at the two ends freely-supported, there is not fulcrum between three rod journals, this has weakened strength of crankshaft and rigidity on the one hand, on the other hand, reduction gear on the bent axle is installed between two middle rod journals of bent axle, and is far away from the strong point, is unfavorable for the accuracy of mesh of reduction gear.
The bent axle of second and third cylinder pump adopts is that two rod journals between supporting are big especially, crank is also big especially, bent axis central part is hollowly not process, processing excircles main journal and rod journal surface, the non-uniform mass that bent axle is serious, increase the quality and the inertia imbalance of bent axle, be unfavorable for improving pump speed.
Three, when rod journal use be sliding bearing the time, be that the connecting rod power that is subjected to of bent axle is very big for the characteristics of drilling pump, rotating speed is very low, causes sliding bearing will bear very large specific pressure, sets up difficulty of oil film.Can effectively set up the oil film that bears big specific pressure for the sliding bearing that guarantees rod journal, must guarantee that lubricant oil has the viscosity height, flow is big, and this just requires the oil circuit resistance in the bent axle little.
The model utility content
The purpose of this utility model provided a kind of simple in structure, can guarantee that drilling pump can satisfy the bent axle that is used for the drilling pump connecting rod of lubrication effect between bearing shell and the bent axle equally under high loading, slow-revving situation.
The technical solution of the utility model is as follows:
A kind of bent axle that is used for drilling pump, comprise the bent axle body, described bent axle body has main journal, rod journal and gear axle journal, the alternate layout of described main journal and rod journal, described gear axle journal is positioned at the two ends of bent axle body, has oil outlet on the described rod journal, directly is communicated with by oil duct between the adjacent described oil outlet, described gear axle journal has oil inlet hole, and described oil inlet hole is communicated with by the direct and adjacent oil outlet of oil duct.
Adopting the said structure key is to be provided with the oil duct and the oil outlet that can directly arrive the rod journal surface on the bent axle body, lubricant oil can enter from the oil inlet hole at two ends and reach between every section axle journal and the bearing shell like this, guarantees the lubricating requirement between rod journal and the bearing shell.
Described oil duct between two oil outlets is a beeline channel.
Beeline channel is easy to process, and especially the flow resistance to lubricant oil is little.
The degree of depth of described oil outlet is lower than the interface degree of depth of described oil duct, and the cross-section area of described oil outlet is at least 2 times of described oil duct cross-section area.
The diameter of described oil duct is φ 16～φ 20mm.
The diameter of described oil duct is φ 18.
Described bent axle body has 5 described rod journals and 6 described main journals, phase angle between the wherein said rod journal is 72 ° an integral multiple relation, and described oil outlet is positioned on five equal diversion points of its projection outer ring in the side projection relation of described rod journal.
Beneficial effect: the utility model is simple in structure, solved drilling pump lubricated bad problem between the slow-speed of revolution, high load conditions lower link axle journal and bearing shell by the design to bent axle body oil leab, oil inlet hole, oil outlet.
Description of drawings
The utility model will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 structural representation of the present utility model;
Fig. 2 is the plan view of bent axle body among Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B place enlarged view of Fig. 3;
Fig. 5 is lateral projection's layout view of oil duct and oil outlet.
Embodiment
Shown in Fig. 1,2,3,4: a kind of bent axle that is used for drilling pump, comprise the bent axle body, described bent axle body has main journal 1, rod journal 2 and gear axle journal 3, described main journal 1 and rod journal 2 alternate layouts, described gear axle journal 3 is positioned at the two ends of bent axle body, have oil outlet 2a on the described rod journal 2, directly be communicated with between the adjacent described oil outlet 2a by oil duct 4, described gear axle journal 3 has oil inlet hole 3a, and described oil inlet hole 3a is communicated with by oil duct 4 direct and adjacent oil outlet 2a.
Described oil duct 4 between the two oil outlet 2a is a beeline channel.
The degree of depth of described oil outlet 2a is lower than the interface degree of depth of described oil duct 4, and the cross-section area of described oil outlet 2a is at least 2 times of described oil duct 4 cross-section areas.
With five cylinder pumps is example: the bent axle body has 5 described rod journals 2 and 6 described main journals 1, phase angle between the wherein said rod journal 2 is 72 ° an integral multiple relation, and described oil outlet 2a is positioned on five equal diversion points of its projection outer ring in the side projection relation of described rod journal 2.Certainly above-mentioned phase angle is the optimum state of five steel pump rod axle journal relative positions, after actual processing and assembling, might deposit certain error, error in predetermined range can not have influence on the technique effect of this programme, certainly because the angle fine distinction that error caused is limited with this programme should be understood to adopt the identical set mode that adopts 72 ° integral multiple relation with the five cylinder pump phase angles of this programme.
Concretely: five rod journals; Six main journals; Two gear axle journals are installed rolling bearing respectively on six main journals, and this just makes bent axle become six fulcrums, and strength of crankshaft and rigidity are improved greatly.On two gear axle journals, the deceleration gearwheel is installed respectively, has been improved the gear meshing precision.Because crankshaft two end is installed the gear of symmetry respectively, is installed in the monolateral rigidity that more helps bent axle than gear.Bearing shell 5 and connecting rod 6. are installed on the rod journal
Because the bent axle all surface all will carry out machining, the mass distribution of Here it is bent axle is even, has improved the dynamic balance accuracy of bent axle, helps improving the rotating speed of drilling pump.
This bent axle adopts die forging, is not only machining allowance and significantly reduces, and make the metallographic fiber of bent axle can not improved the antifatigue damage capability of bent axle greatly by considerable damage in machining, the phenomenon of triplex pump fracture bent axle can not occur.Improved the safety reliability of bent axle greatly.
Job order between five rod journals of drilling pump bent axle helps improving the motion harmony of five cylinders.
The oil circuit of the utility model bent axle is designed with two important feature: first characteristics are, article six, the mutual alignment of the straight line oil duct of inclination concerns that projecting direction as shown in Figure 5 becomes the layout of five-pointed star, making oil circuit is straight line, second characteristic is, each oil-out, the degree of depth of oil-out are greater than the aperture of oil duct, and the cross section of oil-out is greater than more than 2 times of oil duct cross section, satisfy this two conditions, the resistance of oil duct can be very little.
Claims (6)
1. bent axle that is used for drilling pump, comprise the bent axle body, described bent axle body has main journal (1), rod journal (2) and gear axle journal (3), described main journal (1) and the alternate layout of rod journal (2), described gear axle journal (3) is positioned at the two ends of bent axle body, it is characterized in that: have oil outlet (2a) on the described rod journal (2), directly be communicated with between the adjacent described oil outlet (2a) by oil duct (4), described gear axle journal (3) has oil inlet hole (3a), and described oil inlet hole (3a) is communicated with by the direct and adjacent oil outlet (2a) of oil duct (4).
2. a kind of bent axle that is used for drilling pump according to claim 1 is characterized in that: the described oil duct (4) between two oil outlets (2a) is a beeline channel.
3. a kind of bent axle that is used for drilling pump according to claim 2, it is characterized in that: the degree of depth of described oil outlet (2a) is lower than the interface degree of depth of described oil duct (4), and the cross-section area of described oil outlet (2a) is at least 2 times of described oil duct (4) cross-section area.
4. according to claim 1,2 or 3 described a kind of bent axles that are used for drilling pump, it is characterized in that: the diameter of described oil duct (4) is φ 16～φ 20mm.
5. a kind of bent axle that is used for drilling pump according to claim 4 is characterized in that: the diameter of described oil duct (4) is φ 18.
6. according to claim 1,2 or 3 described a kind of bent axles that are used for drilling pump, it is characterized in that: described bent axle body has 5 described rod journals (2) and 6 described main journals (1), phase angle between the wherein said rod journal (2) is 72 ° an integral multiple relation, and described oil outlet (2a) is positioned on five equal diversion points of its projection outer ring in the side projection relation of described rod journal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205818748U CN201827056U (en) | 2010-10-29 | 2010-10-29 | Crankshaft for drill pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205818748U CN201827056U (en) | 2010-10-29 | 2010-10-29 | Crankshaft for drill pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201827056U true CN201827056U (en) | 2011-05-11 |
Family
ID=43965596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205818748U Expired - Lifetime CN201827056U (en) | 2010-10-29 | 2010-10-29 | Crankshaft for drill pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201827056U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664162A (en) * | 2020-06-10 | 2020-09-15 | 东风柳州汽车有限公司 | Connecting rod assembly |
| CN112901478A (en) * | 2021-03-01 | 2021-06-04 | 北京天地玛珂电液控制系统有限公司 | Plunger pump |
-
2010
- 2010-10-29 CN CN2010205818748U patent/CN201827056U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664162A (en) * | 2020-06-10 | 2020-09-15 | 东风柳州汽车有限公司 | Connecting rod assembly |
| CN112901478A (en) * | 2021-03-01 | 2021-06-04 | 北京天地玛珂电液控制系统有限公司 | Plunger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |