CN114135462B - Internal lubrication type plunger pump - Google Patents
Internal lubrication type plunger pump Download PDFInfo
- Publication number
- CN114135462B CN114135462B CN202111242458.4A CN202111242458A CN114135462B CN 114135462 B CN114135462 B CN 114135462B CN 202111242458 A CN202111242458 A CN 202111242458A CN 114135462 B CN114135462 B CN 114135462B
- Authority
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- China
- Prior art keywords
- gear
- speed increasing
- crankshaft
- pump
- increasing box
- 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.)
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Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 97
- 239000003921 oil Substances 0.000 claims description 49
- 239000010687 lubricating oil Substances 0.000 claims description 30
- 238000007789 sealing Methods 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 241000227287 Elliottia pyroliflora Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/18—Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses an internal lubrication type plunger pump which comprises a crankcase shell, a crankshaft, a speed increasing box, a speed increasing mechanism and an internal lubrication oil pump, wherein the crankshaft is rotatably arranged on the crankcase shell, the speed increasing box is connected with the crankcase shell, the speed increasing mechanism is arranged on the speed increasing box and is provided with an input end and an output end, the input end of the speed increasing mechanism is connected with the crankshaft, the internal lubrication oil pump is arranged on the speed increasing box, and a driving shaft of the internal lubrication oil pump is connected with the output end of the speed increasing mechanism. The internal lubrication type plunger pump provided by the invention has the advantages that the working reliability of the internal lubrication pump is high, and the plunger pump is not easy to damage due to insufficient lubrication or oil supply.
Description
Technical Field
The invention relates to the technical field of plunger pumps, in particular to an internal lubrication type plunger pump.
Background
The fracturing pump is a device which takes fracturing fluid as a medium, usually has clean water as a main component, converts electric energy or other energy into mechanical energy, does work on the fracturing fluid through an internal structure, and further converts the work into hydraulic energy of the fracturing fluid. The crank drive and the lubricating oil pump drive which plays a lubricating role in the related art are mutually independent, and when the driving of the lubricating oil pump fails, the fracturing pump is easy to burn tiles, burn bearings, and bond a cross head with a guide plate, so that the reliability is poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
Therefore, the embodiment of the invention provides the internal lubrication type plunger pump, which has the advantages of high working reliability of the internal lubrication pump and difficult damage of the plunger pump due to insufficient lubrication or oil supply.
The internal lubrication type plunger pump comprises a crankcase shell, a crankshaft, a speed increasing box, a speed increasing mechanism and an internal lubrication pump, wherein the crankshaft is rotatably arranged on the crankcase shell; the speed increasing mechanism is arranged on the speed increasing box and is provided with an input end and an output end, and the input end of the speed increasing mechanism is connected with the crankshaft; the internal lubricating oil pump is arranged in the speed increasing box, and a driving shaft of the internal lubricating oil pump is connected with the output end of the speed increasing mechanism.
According to the internal lubrication type plunger pump provided by the embodiment of the invention, the internal lubrication pump is driven by the crankshaft, so that the possibility that the internal lubrication pump stops working accidentally when the crankshaft rotates is basically avoided, and the plunger pump is effectively prevented from being damaged due to no oil supply. In addition, through setting up speed increasing mechanism for interior lubricating oil pump is in reasonable rotational speed scope, guarantees from this that interior lubricating oil pump is in higher volumetric efficiency, guarantees that interior lubricating oil pump can both effective oil feed in fracturing pump stroke frequency variation range, has improved interior lubricating oil pump's operational reliability.
In some embodiments, the speed increasing mechanism comprises a first gear and a second gear mounted in the speed increasing box, the first gear is meshed with the second gear, a gear shaft of the first gear forms an input end of the speed increasing mechanism, and a gear shaft of the second gear forms an output end of the speed increasing mechanism.
In some embodiments, the first gear and the second gear are cylindrical gears, the diameter of the first gear is larger than that of the second gear, a gear shaft of the first gear is coaxially connected with the crankshaft, and a gear shaft of the second gear is coaxially connected with a driving shaft of the inner lubricating oil pump.
In some embodiments, the speed increasing box comprises a speed increasing box shell and a speed increasing box cover, the speed increasing box shell is connected with the crankcase shell, the speed increasing box cover is connected with the speed increasing box shell, an installation cavity is formed between the speed increasing box shell and the speed increasing box cover, the first gear is located in the installation cavity, a first assembly hole is formed in the speed increasing box shell, a first bearing is matched in the first assembly hole, the crankshaft is matched in the first bearing and is connected with the first gear, and the second gear is matched in the installation cavity through a second bearing and a third bearing.
In some embodiments, the speed increasing box cover is provided with a second assembly hole, the gear shaft of the first gear is matched in the second assembly hole, a lip-shaped oil seal is arranged between the second assembly hole and the gear shaft of the first gear, a first lubrication oil hole for connecting an external lubrication oil pipe and a crankshaft oil hole on the crankshaft is arranged on the gear shaft of the first gear, and the first lubrication oil hole penetrates through the gear shaft of the first gear along the axial direction of the first gear.
In some embodiments, the inner lubrication type plunger pump further includes an outer lubrication pump, a driving shaft of the outer lubrication pump is connected to the hydrodynamic transmission power takeoff or the motor, and the outer lubrication pump and the inner lubrication pump are both used for supplying oil to the first lubrication oil hole through the outer lubrication oil pipe.
In some embodiments, a containing cavity is formed between the first gear and the crankshaft, a first sealing ring is matched between the first gear and the crankshaft, the first sealing ring surrounds the containing cavity, and the first lubricating oil hole is connected with a crankshaft oil hole on the crankshaft through the containing cavity.
In some embodiments, the first gear is further provided with a second lubricating oil hole which communicates with the accommodating cavity and the mounting cavity.
In some embodiments, the speed increasing box cover is provided with a third assembly hole, the second bearing is matched in the third assembly hole, the third bearing is matched in the mounting cavity, and the gear shaft of the second gear is matched at one end of the second bearing and is connected with the driving shaft of the inner lubricating oil pump through a spline.
In some embodiments, the internal lubrication type plunger pump further comprises an adapter plate, the internal lubrication pump is connected with the speed increasing box cover through the adapter plate, a second sealing ring is matched between the adapter plate and the speed increasing box cover, and a third sealing ring is matched between the adapter plate and the internal lubrication pump.
Drawings
Fig. 1 is a cross-sectional view of an internal lubrication type plunger pump according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a in fig. 1.
Fig. 3 is an exploded view of a speed increaser in an internal lubrication type plunger pump according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a speed increaser in an internal lubrication type plunger pump according to an embodiment of the present invention.
Fig. 5 is a cross-sectional view of a first gear in an internal lubrication type plunger pump according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a second gear in an internal lubrication type plunger pump according to an embodiment of the present invention.
Reference numerals:
100. An internal lubrication type plunger pump; 1. a crankcase housing; 2. a crankshaft; 21. a crankshaft oil hole; 3. a speed increasing box; 31. a speed increasing box shell; 311. a first fitting hole; 32. a speed increasing box cover; 321. a second fitting hole; 322. a third fitting hole; 33. a mounting cavity; 34. a receiving chamber; 4. a first gear; 41. a first lubrication oil hole; 42. a second lubrication oil hole; 5. a second gear; 6. an internal lubrication pump; 7. lip-shaped oil seal; 8. an adapter plate; 9. a first seal ring; 10. a second seal ring; 11. a third seal ring; 12. a first bearing; 13. a second bearing; 14. a third bearing; 15. and (5) a pin.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
An internal lubrication type plunger pump 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 6.
The internal lubrication type plunger pump 100 according to the embodiment of the present invention includes a crankcase housing 1, a crankshaft 2, a speed increasing box 3, a speed increasing mechanism, and an internal lubrication pump 6, the crankshaft 2 being rotatably mounted to the crankcase housing 1. The speed increasing box 3 is connected with the crankcase housing 1, and the speed increasing mechanism is arranged on the speed increasing box 3 and provided with an input end and an output end, and the input end of the speed increasing mechanism is connected with the crankshaft 2. The inner lubricating oil pump 6 is arranged on the speed increasing box 3, and a driving shaft of the inner lubricating oil pump 6 is connected with the output end of the speed increasing mechanism.
According to the internal lubrication type plunger pump 100 of the embodiment of the invention, the internal lubrication pump 6 is driven by the crankshaft 2, so that the possibility that the internal lubrication pump 6 stops working accidentally when the crankshaft 2 rotates is basically avoided, and the plunger pump is effectively prevented from being damaged due to no oil supply. In addition, through setting up speed increasing mechanism for interior lubrication pump 6 is in reasonable rotational speed scope, guarantees from this that interior lubrication pump 6 is in higher volumetric efficiency, guarantees that interior lubrication pump 6 can both effective oil feed in fracturing pump stroke frequency variation range, has improved the operational reliability of interior lubrication pump 6.
In some embodiments, the speed increasing mechanism includes a first gear 4 and a second gear 5 mounted in the speed increasing box 3, the first gear 4 being meshed with the second gear 5, a gear shaft of the first gear 4 constituting an input end of the speed increasing mechanism, and a gear shaft of the second gear 5 constituting an output end of the speed increasing mechanism. By providing the first gear 4 and the second gear 5 with a suitable gear ratio, the internal lubrication pump 6 is thereby provided with a rotational speed that matches the rotational speed of the crankshaft 2. Moreover, the speed of the inner lubricating oil pump 6 is regulated by gear transmission and only one-stage gear transmission, and the speed increasing box 3 has compact structure and smaller volume.
Specifically, as shown in fig. 2, the first gear 4 and the second gear 5 are cylindrical gears, the diameter of the first gear 4 is larger than that of the second gear 5, the gear shaft of the first gear 4 is coaxially connected with the crankshaft 2, and the gear shaft of the second gear 5 is coaxially connected with the driving shaft of the internal lubrication pump 6. The axis of the first gear 4 and the axis of the second gear 5 are parallel to each other, and the gear shaft of the second gear 5 is coaxially connected with the driving shaft of the inner lubricating oil pump 6, thereby realizing the driving connection of the inner lubricating oil pump 6 and the crankshaft 2.
In some embodiments, the gearbox 3 includes a gearbox housing 31 and a gearbox cover 32. The speed increasing box housing 31 is connected with the crankcase housing 1, the speed increasing box cover 32 is connected with the speed increasing box housing 31, and a mounting cavity 33 is formed between the speed increasing box housing 31 and the speed increasing box cover 32. The first gear 4 is located in the mounting cavity 33, a first assembly hole 311 is formed in the speed increasing box shell 31, a first bearing 12 is matched in the first assembly hole 311, the crankshaft 2 is matched in the first bearing 12 and connected with the first gear 4, and the second gear 5 is matched in the mounting cavity 33 through a second bearing 13 and a third bearing 14.
Specifically, as shown in fig. 2 and 3, first, the speed increasing housing 31 is connected to the crankcase housing 1 by bolts and elastic washers, and at this time, the crankshaft 2 is inserted into the mounting cavity 33 through the first fitting hole 311. The first bearing 12 is then installed between the first fitting hole 311 and the crankshaft 2. The first gear 4 is then connected to the crankshaft 2 by means of bolts and elastic washers, thereby ensuring coaxiality between the two. The second bearing 13, the third bearing 14 and the second gear 5 are assembled in sequence in the mounting cavity 33, and finally the speed increasing box cover 32 is connected with the speed increasing box shell 31 through bolts and elastic washers, and the speed increasing box shell 31 and the speed increasing box cover 32 are connected through two pins 15. Therefore, the assembly of the speed increasing box 3 and the speed increasing mechanism is realized, and the disassembly and assembly of the speed increasing box 3 and the speed increasing mechanism are convenient.
The first spigot is provided on the gearbox housing 31, the second spigot is provided on the crankshaft 2, the first bearing 12 is limited between the first spigot and the second spigot, and a sealing ring having a sealing function is provided between the first bearing 12 and the first fitting hole 311, thereby further ensuring the sealing performance of the installation cavity 33.
In some embodiments, as shown in fig. 4 and 5, the speed increasing gearbox cover 32 is provided with a second fitting hole 321, and the gear shaft of the first gear 4 is fitted in the second fitting hole 321. I.e. the gear shaft of the first gear 4 protrudes from the second mounting hole 321 outside the mounting cavity 33. A lip-shaped oil seal 7 is arranged between the second assembly hole 321 and the gear shaft of the first gear 4, and the lip-shaped oil seals 7 are two and are sequentially matched on the gear shaft of the first gear 4 along the axial direction of the first gear 4. This ensures a sealed connection of the gear shaft of the first gear 4 during rotation relative to the gearbox cover 32.
The gear shaft of the first gear 4 is provided with a first lubrication hole 41 connecting the external lubrication pipe and a crankshaft oil hole on the crankshaft 2, and the first lubrication hole 41 penetrates the gear shaft of the first gear 4 in the axial direction of the first gear 4. The axis of the first lubrication oil hole 41 coincides with the axis of the first gear 4, and the inner lubrication oil pump 6 presses lubrication oil into the crankshaft oil hole of the crankshaft 2 sequentially from the outer lubrication oil pipe and the first lubrication oil hole 41, thereby realizing lubrication of the cross head, the guide plate, the small-end copper bush of the connecting rod, the cross head pin, the large-end bearing bush of the connecting rod, the crankshaft 2 and the crankshaft bearing in the crankcase housing 1.
As shown in fig. 5, the end of the first lubrication oil hole 41 remote from the crankshaft 2 is provided with an internal threaded hole for threaded engagement with an external lubrication oil pipe.
In some embodiments, the internal lubrication plunger pump 100 further includes an external lubrication pump, a driving shaft of which is connected to the hydraulic transmission power takeoff or the motor, and the external lubrication pump and the internal lubrication pump 6 are both used to supply oil to the first lubrication oil hole 41 through an external lubrication oil pipe.
Namely, the inner lubricating oil pump 6 and the outer lubricating oil pump form a double lubricating system, so that the reliability of the lubricating system is improved as well as enough lubricating oil is ensured at all lubricating points.
In some embodiments, as shown in fig. 2, a containing cavity 34 is formed between the first gear 4 and the crankshaft 2, a first sealing ring 9 is matched between the first gear 4 and the crankshaft 2, the first sealing ring 9 surrounds the containing cavity 34, and the first lubricating oil hole 41 is connected with a crankshaft oil hole on the crankshaft 2 through the containing cavity 34. The first sealing ring 9 effectively prevents the lubricating oil in the accommodating cavity 34 from leaking from the gap between the first gear 4 and the crankshaft 2, and also ensures that the lubricating oil in the accommodating cavity 34 has enough pressure, thereby ensuring sufficient lubrication of each lubrication point in the crankcase housing 1.
In some embodiments, a second lubrication hole 42 is further provided in the first gear 4, which communicates with the accommodating chamber 34 and the mounting chamber 33. Thereby, the lubrication oil in the accommodation chamber 34 flows into the installation chamber 33 through the second lubrication oil hole 42, agitates the lubrication oil in the installation chamber 33 as the first gear 4 rotates, and lubricates the first gear 4, the second gear 5, the first bearing 12, the second bearing 13, and the third bearing 14.
In some embodiments, as shown in fig. 2, 4 and 6, the speed increasing gearbox cover 32 is provided with a third assembly hole 322, the second bearing 13 is fitted in the third assembly hole 322, the third bearing 14 is fitted in the mounting cavity 33, and the gear shaft of the second gear 5 is fitted at one end of the second bearing 13 and is connected with the driving shaft of the inner lubricant pump 6 through a spline.
Specifically, the diameter of the gear shaft on the left side of the second gear 5 is larger than that of the gear shaft on the right side, an internal spline is arranged on the gear shaft on the left side of the second gear 5, an external spline is arranged on a driving shaft of the internal lubricating oil pump 6, and the external spline is matched with the internal spline, so that the driving shaft of the internal lubricating oil pump 6 is coaxially connected with the second gear 5. The speed increasing box shell 31 is provided with a third spigot, the right gear shaft of the second gear 5 is provided with a fourth spigot, and the third bearing 14 is limited between the third spigot and the fourth spigot.
In some embodiments, the internal lubrication type plunger pump 100 further includes an adapter plate 8, the internal lubrication pump 6 is connected to the speed increasing box cover 32 through the adapter plate 8, a second sealing ring 10 is matched between the adapter plate 8 and the speed increasing box cover 32, and a third sealing ring 11 is matched between the adapter plate 8 and the internal lubrication pump 6. By providing the second seal ring 10 and the third seal ring 11, the sealability of the installation cavity 33 is further ensured.
As shown in fig. 2 and 3, the left gear shaft of the second gear 5 is provided with a fifth spigot, and the second bearing 13 is fitted in the third fitting hole 322 and is limited between the fifth spigot and the adapter plate 8. The adapter plate 8 is connected with the inner lubricating oil pump 6 by two bolts, and the adapter plate 8 is connected with the speed increasing box cover 32 by a plurality of bolts and elastic gaskets.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (5)
1. An internal lubrication type plunger pump, comprising:
A crankcase housing and a crankshaft rotatably mounted to the crankcase housing;
The speed increasing box is connected with the crankcase shell, and is installed on the speed increasing box and provided with an input end and an output end, and the input end of the speed increasing mechanism is connected with the crankshaft; the speed increasing box comprises a speed increasing box shell and a speed increasing box cover, the speed increasing box shell is connected with the crankcase shell, the speed increasing box cover is connected with the speed increasing box shell, and an installation cavity is formed between the speed increasing box shell and the speed increasing box cover;
the inner lubricating oil pump is arranged on the speed increasing box, and a driving shaft of the inner lubricating oil pump is connected with the output end of the speed increasing mechanism;
The speed increasing mechanism comprises a first gear and a second gear which are arranged in the speed increasing box, the first gear is meshed with the second gear, a gear shaft of the first gear forms an input end of the speed increasing mechanism, and a gear shaft of the second gear forms an output end of the speed increasing mechanism;
The speed increasing box cover is provided with a second assembly hole, a gear shaft of the first gear is matched in the second assembly hole, a lip-shaped oil seal is assembled between the second assembly hole and the gear shaft of the first gear, a first lubrication oil hole for connecting an external lubrication oil pipe and a crankshaft oil hole on the crankshaft is formed in the gear shaft of the first gear, and the first lubrication oil hole penetrates through the gear shaft of the first gear along the axial direction of the first gear;
The inner lubrication type plunger pump further comprises an outer lubrication oil pump, a driving shaft of the outer lubrication oil pump is connected with a hydraulic transmission power takeoff or a motor, and the outer lubrication oil pump and the inner lubrication oil pump are both used for supplying oil to the first lubrication oil hole through the outer lubrication oil pipe;
the first gear and the crankshaft form a containing cavity, a first sealing ring is matched between the first gear and the crankshaft, the first sealing ring surrounds the containing cavity, and the first lubricating oil hole is connected with a crankshaft oil hole on the crankshaft through the containing cavity;
The first gear is also provided with a second lubricating oil hole which is communicated with the accommodating cavity and the mounting cavity.
2. The internal lubrication type plunger pump according to claim 1, wherein the first gear and the second gear are cylindrical gears, the diameter of the first gear is larger than that of the second gear, a gear shaft of the first gear is coaxially connected with the crankshaft, and a gear shaft of the second gear is coaxially connected with a driving shaft of the internal lubrication pump.
3. The internal lubrication type plunger pump according to claim 2, wherein the first gear is located in the installation cavity, a first assembly hole is formed in the speed increasing box shell, a first bearing is matched in the first assembly hole, the crankshaft is matched in the first bearing and connected with the first gear, and the second gear is matched in the installation cavity through a second bearing and a third bearing.
4. The internal lubrication type plunger pump according to claim 3, wherein the speed increasing box cover is provided with a third assembly hole, the second bearing is matched in the third assembly hole, the third bearing is matched in the mounting cavity, and a gear shaft of the second gear is matched at one end of the second bearing and is connected with a driving shaft of the internal lubrication type pump through a spline.
5. The internal lubrication type plunger pump according to claim 4, further comprising an adapter plate, wherein the internal lubrication pump is connected with the speed increasing box cover through the adapter plate, a second sealing ring is matched between the adapter plate and the speed increasing box cover, and a third sealing ring is matched between the adapter plate and the internal lubrication pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111242458.4A CN114135462B (en) | 2021-10-25 | 2021-10-25 | Internal lubrication type plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111242458.4A CN114135462B (en) | 2021-10-25 | 2021-10-25 | Internal lubrication type plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114135462A CN114135462A (en) | 2022-03-04 |
| CN114135462B true CN114135462B (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111242458.4A Active CN114135462B (en) | 2021-10-25 | 2021-10-25 | Internal lubrication type plunger pump |
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| CN (1) | CN114135462B (en) |
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| JP2001107841A (en) * | 1999-07-30 | 2001-04-17 | Maruyama Mfg Co Ltd | Reciprocating pump device |
| CN205534169U (en) * | 2016-03-29 | 2016-08-31 | 江苏泰隆减速机股份有限公司 | Take acceleration rate force -feed lubrication's speed reducer |
| CN107725734A (en) * | 2017-10-24 | 2018-02-23 | 北京天地玛珂电液控制***有限公司 | Plunger pump |
| CN211551122U (en) * | 2019-12-25 | 2020-09-22 | 江阴硕人节能环保科技有限公司 | Lubricating oil supply device |
| CN112901478A (en) * | 2021-03-01 | 2021-06-04 | 北京天地玛珂电液控制***有限公司 | Plunger pump |
-
2021
- 2021-10-25 CN CN202111242458.4A patent/CN114135462B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001107841A (en) * | 1999-07-30 | 2001-04-17 | Maruyama Mfg Co Ltd | Reciprocating pump device |
| CN205534169U (en) * | 2016-03-29 | 2016-08-31 | 江苏泰隆减速机股份有限公司 | Take acceleration rate force -feed lubrication's speed reducer |
| CN107725734A (en) * | 2017-10-24 | 2018-02-23 | 北京天地玛珂电液控制***有限公司 | Plunger pump |
| CN211551122U (en) * | 2019-12-25 | 2020-09-22 | 江阴硕人节能环保科技有限公司 | Lubricating oil supply device |
| CN112901478A (en) * | 2021-03-01 | 2021-06-04 | 北京天地玛珂电液控制***有限公司 | Plunger pump |
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| CN114135462A (en) | 2022-03-04 |
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