CN112050064A - Large-flow double-section pump - Google Patents
Large-flow double-section pump Download PDFInfo
- Publication number
- CN112050064A CN112050064A CN202010980623.5A CN202010980623A CN112050064A CN 112050064 A CN112050064 A CN 112050064A CN 202010980623 A CN202010980623 A CN 202010980623A CN 112050064 A CN112050064 A CN 112050064A
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- China
- Prior art keywords
- pump
- pump body
- shaft
- teeth
- transmission shaft
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- 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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Classifications
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- 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
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
- F04C2/165—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type having more than two rotary pistons with parallel axes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Pumps (AREA)
Abstract
The invention provides a large-flow double-section pump which comprises a first pump body, a second pump body, a transmission shaft, a transmission gear and an idler shaft, wherein the first pump body is connected with the second pump body through the transmission shaft; the first pump body and the second pump body are fixedly connected through bolts, a partition plate is arranged between the first pump body and the second pump body, and the transmission shaft and the idler shaft simultaneously penetrate through the first pump body and the second pump body; one end of the transmission shaft can rotatably penetrate through the shaft hole of the first pump body, the end part of the transmission shaft is provided with the transmission gear, the other end of the transmission shaft can rotatably penetrate through the shaft hole of the second pump body, the middle part of the transmission shaft is fixedly provided with three driving pump teeth, two driving pump teeth are connected into a whole through a pin shaft and are positioned in the first pump body, and the rest driving pump teeth are positioned in the second pump body; two ends of an idler shaft are respectively fixed in shaft holes of the first pump body and the second pump body, three driven pump teeth are movably mounted in the middle of the idler shaft, two driven pump teeth are located in the first pump body, and the remaining one driven pump tooth is located in the second pump body; the three driving pump teeth and the three driven pump teeth are meshed with each other.
Description
Technical Field
The invention relates to a lubricating system of an internal combustion engine, in particular to a large-flow gear type oil pump.
Technical Field
With the continuous development of engine technology, the technical requirements on the oil pump of an engine lubrication system are higher and higher, and for engines of different types, the oil pump matched with the engine is required to provide lubricating oil with stable oil pressure, abundant flow and reliable working performance for the engine. Due to the design problem of the existing oil pump, the flow provided by the oil pump cannot meet the lubricating technical requirement of the engine after the energy expansion improvement, and the market needs a large-flow oil pump matched with the engine after the energy expansion improvement.
And if a large-flow oil pump is needed, the oil pump with a gear structure is needed. In order to meet the requirement of engine oil flow, the diameter and the thickness of a gear in a pump body are large, so that the gear pump is not beneficial to processing, if the diameter or the thickness of the gear is not increased, the rotating speed of the engine oil pump needs to be increased in order to obtain large flow capacity, but the service life of the engine oil pump is shortened under the condition, the accessory power consumption of the engine oil pump is increased or the fuel economy of an engine is influenced, and meanwhile, the noise of the engine is increased.
Disclosure of Invention
The invention aims to provide a high-flow double-section pump which is high in reliability and low in manufacturing and maintenance cost.
In order to solve the technical problems, the technical scheme of the invention is as follows: a large-flow double-section pump comprises a first pump body, a second pump body, a transmission shaft, a transmission gear and an idler shaft; the first pump body and the second pump body are both provided with an oil inlet and an oil outlet, the first pump body and the second pump body are fixedly connected through bolts, a partition plate is arranged between the first pump body and the second pump body, and the transmission shaft and the idler shaft simultaneously penetrate through the first pump body and the second pump body; one end of the transmission shaft can rotatably penetrate through the shaft hole of the first pump body, a transmission gear is arranged at the end part of the transmission shaft, the other end of the transmission shaft can rotatably penetrate through the shaft hole of the second pump body, three driving pump teeth are fixedly arranged in the middle of the transmission shaft, two driving pump teeth are connected into a whole through a pin shaft and are positioned in the first pump body, and the rest driving pump teeth are positioned in the second pump body; two ends of the idler shaft are respectively fixed in shaft holes of the first pump body and the second pump body, three driven pump teeth are movably mounted in the middle of the idler shaft, two driven pump teeth are located in the first pump body, and the remaining one driven pump tooth is located in the second pump body; the three driving pump teeth and the three driven pump teeth are meshed with each other.
According to the technical scheme, the oil inlet and the oil outlet are formed in the first pump body and the second pump body, the first pump body and the second pump body are fixedly connected through the bolts, the partition plate is arranged between the first pump body and the second pump body, the transmission shaft and the idler shaft penetrate through the first pump body and the second pump body simultaneously, the driving pump teeth are installed on the transmission shaft, the driven pump teeth are installed on the idler shaft, two oil pumps which are independent of each other are formed, the two oil pumps share the transmission shaft and the idler shaft, and the structure is very compact. Moreover, the idler shaft adopted by the pump body pump cover shaft hole has higher reliability compared with the driven shaft, because the idler shaft is fixed, when the driving pump teeth drive the driven pump teeth to rotate around the idler shaft, additional force cannot be generated on the driven pump teeth, and the driven shaft can rotate, so that the lining in the pump body pump cover shaft hole can be inevitably vibrated, and the service life of the lining is shortened.
As a preferred technical scheme, the three driving pump teeth and the three driven pump teeth are all helical gears with large helical angles, wherein the two driving pump teeth in the first pump body are combined into a herringbone gear, and the two driven pump teeth are correspondingly combined into the herringbone gear. The oil pump with the structure has the advantages of high bearing capacity, smooth transmission, low noise and the like, and the noise level is controlled below 100dBA, which is equivalent to the noise level of the commercial vehicle oil pump with the flow rate of 300-400L/min. Two driving pump teeth in the first pump body are connected and combined into a herringbone gear through a pin shaft, and the problem that the herringbone gear is difficult to machine in a direct design mode can be solved.
Furthermore, a pump cover is also arranged on the second pump body, a screw hole is formed in the side wall of the second pump body corresponding to the end part of the idler shaft, and a stop screw is screwed into the screw hole to position the idler shaft. Because the idler shaft can be fixed through the stop screw, small clearance fit can be adopted between the idler shaft and the shaft holes of the first pump body and the second pump body, and the problem that the verticality of the idler shaft is difficult to guarantee when a large-size idler shaft is pressed into the shaft holes of the first pump body or the second pump body in an interference mode is solved.
Still further, the position that the tip global of idler axle corresponds the set screw is equipped with a blind hole.
In one embodiment, the baffle is formed by combining a first baffle and a second baffle, the second baffle being smaller than the first baffle and located within the second pump body. Because the wearing and tearing of second baffle can be greater than the wearing and tearing of first baffle, when the wearing and tearing of second baffle reached life, then only need change the second baffle, avoid changing the baffle is whole to reduce use cost hangs down.
In one embodiment, three drive pumping teeth are coupled to the drive shaft by a woodruff key.
In one embodiment, the transmission gear is provided with a balance hole structure.
Furthermore, the tail end of the transmission shaft is provided with a shaft sleeve, a gasket and a locking nut, so that the transmission shaft is prevented from loosening.
In one embodiment, one end of the transmission shaft for mounting the transmission gear is provided with a circle of boss, and the outer surface of the boss is attached to the inner surface of the transmission gear and fixed through bolts.
In one embodiment, bushings are mounted in shaft holes of the first pump body and the second pump body for mounting the transmission shaft in a pressure-equalizing mode, and bushings are also mounted in shaft holes of the three driven pump teeth in a pressure-equalizing mode.
Drawings
FIG. 1 is a schematic diagram of an external structure of an oil pump according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of an oil pump according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of the end of the pump cap of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
the reference signs are:
1-first pump body 2-second pump body 3-transmission shaft
4-drive gear 5-idler shaft 6-active pump tooth
7-driven pump tooth 8-pump cover 9-stop screw
10-first partition board 11-second partition board 12-shaft sleeve
13-spacer 14-locknut 15-bush
16-semicircular key 17-pin shaft.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, 2, 3 and 4, the preferred embodiment of the present invention is: a large-flow double-section pump comprises a first pump body 1, a second pump body 2, a transmission shaft 3, a transmission gear 4 and an idler shaft 5; an oil inlet and an oil outlet are formed in the first pump body 1 and the second pump body 2 respectively, the first pump body 1 and the second pump body 2 are fixedly connected through bolts, a partition plate is arranged between the first pump body 1 and the second pump body 2, and the transmission shaft 3 and the idler shaft 5 penetrate through the first pump body 1 and the second pump body 2 simultaneously; one end of the transmission shaft 3 is rotatably arranged in a shaft hole of the first pump body 1 in a penetrating manner, a transmission gear 4 is arranged at the end part of the transmission shaft, the other end of the transmission shaft is rotatably arranged in a shaft hole of the second pump body 2 in a penetrating manner, three driving pump teeth 6 are fixedly arranged in the middle of the transmission shaft 3, the three driving pump teeth 6 are connected with the transmission shaft 3 through a semicircular key 16, two driving pump teeth 6 are connected into a whole through a pin shaft 17 and are positioned in the first pump body 1, and the rest driving pump teeth 6 are positioned in the second pump body 2; two ends of an idler shaft 5 are respectively fixed in shaft holes of the first pump body 1 and the second pump body 2, three driven pump teeth 7 are movably mounted in the middle of the idler shaft 5, two driven pump teeth 7 are located in the first pump body 1, and the remaining one driven pump tooth 7 is located in the second pump body 2; the three driving pump teeth 6 and the three driven pump teeth 7 are meshed with each other; the three driving pump teeth 6 and the three driven pump teeth 7 are all helical gears with large helical angles, wherein the two driving pump teeth 6 positioned in the first pump body 1 are combined into a herringbone gear, and the two driven pump teeth 7 are correspondingly combined into the herringbone gear. .
In the technical scheme, the first pump body 1 and the second pump body 2 are both provided with the oil inlet and the oil outlet, the first pump body 1 and the second pump body 2 are fixedly connected through the bolts, the partition plates are arranged between the first pump body 1 and the second pump body 2, the transmission shaft 3 and the idler shaft 5 simultaneously penetrate through the first pump body 1 and the second pump body 2, the transmission shaft 3 is provided with the driving pump teeth 6, the idler shaft 5 is provided with the driven pump teeth 7, two oil pumps which are independent from each other are formed, the two oil pumps share the transmission shaft and the idler shaft, and the structure is very compact. Moreover, the oil pump in this embodiment adopts idler shaft 5 to compare the reliability of driven shaft higher, because idler shaft 5 is immobile, when initiative pump teeth 6 drove driven pump teeth 6 and rotate around idler shaft 5, can not produce the additional force to driven pump teeth 6, and the driven shaft itself can be pivoted, and this inevitably can produce the vibration to the bush in the pump body pump cover shaft hole to reduce bush life.
The oil pump provided by the embodiment has the advantages of high bearing capacity, smooth transmission, low noise and the like, and the noise level is controlled below 100dBA, which is equivalent to the noise level of the commercial vehicle oil pump with the flow rate of 300-400L/min.
As shown in fig. 2, 3 and 4, the second pump body 2 is further provided with a pump cover 8, the side wall of the second pump body 2 is provided with a screw hole corresponding to the end of the idler shaft 5, the idler shaft 5 can be positioned by screwing a stop screw 9 into the screw hole, and the peripheral surface of the end of the idler shaft 5 is provided with a blind hole corresponding to the position of the stop screw 9. Because the idler shaft 5 can be fixed through the stop screws 9, the idler shaft 5 can be in small clearance fit with the shaft holes of the first pump body 1 and the second pump body 2, and the problem that the verticality of the idler shaft with a large size is difficult to guarantee when the idler shaft with the large size is pressed into the shaft holes of the first pump body or the second pump body in an interference mode is solved.
As shown in fig. 2, the partition is formed by combining a first partition 10 and a second partition 11, and the second partition 11 is smaller than the first partition 10 and is located in the second pump body 2. Because the abrasion of the second clapboard 11 is larger than that of the first clapboard 10, when the abrasion of the second clapboard 11 reaches the service life, only the second clapboard 11 needs to be replaced, the integral replacement of the clapboard is avoided, and the use cost is reduced.
As shown in fig. 2, one end of the transmission shaft 3, which is used for installing the transmission gear 4, is provided with a circle of boss, the outer surface of the boss is attached to the inner surface of the transmission gear 4 and fixed by bolts, and the transmission gear 4 is provided with a balance hole structure; the tail end of the transmission shaft 3 is provided with a shaft sleeve 12, a gasket 13 and a locking nut 14, so that the transmission shaft is prevented from loosening; the first pump body 1 and the second pump body 2 are provided with bushings 15 in shaft holes for mounting the transmission shaft 3, and the bushings 15 are also arranged in the shaft holes of the three driven pump teeth 7 in a pressing mode.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (10)
1. A large-traffic two-stage pump which is characterized in that: comprises a first pump body (1), a second pump body (2), a transmission shaft (3), a transmission gear (4) and an idler shaft (5); an oil inlet and an oil outlet are formed in the first pump body (1) and the second pump body (2), the first pump body (1) and the second pump body (2) are fixedly connected through bolts, a partition plate is arranged between the first pump body and the second pump body, and the transmission shaft (3) and the idler shaft (5) penetrate through the first pump body (1) and the second pump body (2) simultaneously; one end of the transmission shaft (3) can be rotatably arranged in a shaft hole of the first pump body (1) in a penetrating manner, a transmission gear (4) is arranged at the end part of the transmission shaft, the other end of the transmission shaft can be rotatably arranged in a shaft hole of the second pump body (2) in a penetrating manner, three driving pump teeth (6) are fixedly arranged in the middle of the transmission shaft (3), two driving pump teeth (6) are connected into a whole through a pin shaft (17) and are positioned in the first pump body (1), and the rest driving pump teeth (6) are positioned in the second pump body (2); two ends of the idler shaft (5) are respectively fixed in shaft holes of the first pump body (1) and the second pump body (2), three driven pump teeth (7) are movably mounted in the middle of the idler shaft (5), two driven pump teeth (7) are located in the first pump body (1), and the remaining one driven pump tooth (7) is located in the second pump body (2); the three driving pump teeth (6) and the three driven pump teeth (7) are meshed with each other.
2. The mass flow two-stage pump according to claim 1, characterized in that: the three driving pump teeth (6) and the three driven pump teeth (7) are all helical gears with large helical angles, wherein the two driving pump teeth (6) positioned in the first pump body (1) are combined into a herringbone gear, and the two driven pump teeth (7) are correspondingly combined into the herringbone gear.
3. A mass flow two-stage pump according to claim 1 or 2, characterized in that: a pump cover (8) is further mounted on the second pump body (2), a screw hole is formed in the side wall of the second pump body (2) corresponding to the end portion of the idler shaft (5), and a stop screw (9) is screwed into the screw hole to position the idler shaft (5).
4. A mass flow two-stage pump according to claim 3, characterized by: the end peripheral surface of the idler shaft (5) is provided with a blind hole corresponding to the position of the stop screw (9).
5. A mass flow two-stage pump according to claim 1 or 2, characterized in that: the baffle is formed by combining a first baffle (10) and a second baffle (11), and the second baffle (11) is smaller than the first baffle (10) and is positioned in the second pump body (2).
6. A mass flow two-stage pump according to claim 1 or 2, characterized in that: the three driving pump teeth (6) are connected with the transmission shaft (3) through a semicircular key (16).
7. A mass flow two-stage pump according to claim 1 or 2, characterized in that: the transmission gear (4) is provided with a balance hole structure.
8. A mass flow two-stage pump according to claim 1 or 2, characterized in that: the tail end of the transmission shaft (3) is provided with a shaft sleeve (12), a gasket (13) and a locking nut (14), so that the transmission shaft (3) is prevented from loosening.
9. A mass flow two-stage pump according to claim 1 or 2, characterized in that: one end of the transmission shaft (3) used for installing the transmission gear (4) is provided with a circle of boss, and the outer surface of the boss is attached to the inner surface of the transmission gear (4) and fixed through bolts.
10. A mass flow two-stage pump according to claim 1 or 2, characterized in that: the shaft holes for mounting the transmission shaft (3) on the first pump body (1) and the second pump body (2) are internally provided with bushings (15) in a pressure-sharing manner, and the bushings (15) are also arranged in the shaft holes of the three driven pump teeth (7) in a pressure-sharing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980623.5A CN112050064A (en) | 2020-09-17 | 2020-09-17 | Large-flow double-section pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980623.5A CN112050064A (en) | 2020-09-17 | 2020-09-17 | Large-flow double-section pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112050064A true CN112050064A (en) | 2020-12-08 |
Family
ID=73603548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010980623.5A Pending CN112050064A (en) | 2020-09-17 | 2020-09-17 | Large-flow double-section pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112050064A (en) |
-
2020
- 2020-09-17 CN CN202010980623.5A patent/CN112050064A/en active Pending
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