CN213928598U - Injection pump transmission structure, high-pressure common rail system and engine - Google Patents
Injection pump transmission structure, high-pressure common rail system and engine Download PDFInfo
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- CN213928598U CN213928598U CN202023092700.8U CN202023092700U CN213928598U CN 213928598 U CN213928598 U CN 213928598U CN 202023092700 U CN202023092700 U CN 202023092700U CN 213928598 U CN213928598 U CN 213928598U
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- injection pump
- oil
- oil inlet
- inlet channel
- transmission shaft
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Abstract
The utility model discloses a fuel injection pump transmission structure relates to fuel injection pump technical field, it is the technical problem that current fuel injection pump can not carry out effective lubrication to mainly solve, this structure includes the fuel injection pump, the fuel injection pump is equipped with the connecting seat that is used for connecting the engine body, be equipped with the transmission shaft in the connecting seat, the mounting hole, the pivot is cup jointed to the one end of transmission shaft, the other end is equipped with the gear, be equipped with first oil feed way on the connecting seat, be equipped with third oil inlet duct in the pivot, be equipped with the second oil feed way in the transmission shaft, the one end that the fuel injection pump is close to the pivot is equipped with the inside first oil return duct of intercommunication fuel injection pump, be equipped with the second oil return way that corresponds with first oil return duct on the connecting seat, first oil feed way, the second oil feed way, the third oil feed way, first oil return duct, second oil return way forms lubricating oil return circuit. The utility model also discloses a high pressure common rail system and engine. The utility model discloses a lubricating oil return circuit lasts for the injection pump is inside lubricated with the transmission shaft, can improve lubricated effect, improves the stability of injection pump work.
Description
Technical Field
The utility model relates to a fuel injection pump technical field, more specifically say, it relates to a fuel injection pump transmission structure, high pressure common rail system and engine.
Background
The electric control high-pressure common rail system pressurizes and conveys fuel oil to a common rail pipe through an oil injection pump, and the common rail pipe distributes high-pressure oil to oil injectors corresponding to all cylinders. The current injection pump lacks effectual lubrication at the course of the work, and the transmission shaft of injection pump is worn and torn easily, and influences the stability of injection pump work to and transmission efficiency is poor, unable up to standard.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, the utility model aims at providing a can improve the injection pump transmission structure of lubricated effect, simultaneously, the utility model discloses still provide a high pressure common rail system and the engine of using this injection pump transmission structure.
In order to achieve the above object, the present invention provides the following technical solutions: a transmission structure of an oil injection pump comprises the oil injection pump, wherein a connecting seat used for being connected with an engine body is arranged at one end, close to a rotating shaft of the oil injection pump, a transmission shaft and a mounting hole used for mounting the transmission shaft are arranged in the connecting seat, one end of the transmission shaft is sleeved on the periphery of the rotating shaft, a gear is arranged at the other end of the transmission shaft, a first oil inlet channel communicated with the mounting hole is arranged on the connecting seat, a third oil inlet channel communicated with the inside of the oil injection pump is arranged in the rotating shaft, a second oil inlet channel communicated with the first oil inlet channel and the third oil inlet channel is arranged in the transmission shaft, a first oil return channel communicated with the inside of the oil injection pump is arranged at one end, close to the rotating shaft, of the oil injection pump, a second oil return channel corresponding to the first oil return channel is arranged on the connecting seat, and the first oil inlet channel, the second oil inlet channel, the third oil inlet channel, the first oil return channel, the second oil inlet channel, the third oil inlet channel, the first oil return channel, the second oil inlet channel, the first oil inlet channel, the second oil inlet channel, the first oil channel, the second oil inlet channel, the second oil channel, the first oil channel, the second oil inlet channel, the first oil channel, the second oil channel, the first oil inlet channel, the second oil channel, the first oil channel, the second oil inlet channel, the second oil inlet channel, the first oil channel, the second oil channel, the first oil channel, the second oil channel, The second oil return passage forms a lubricating oil circuit.
As a further improvement, two ends of the mounting hole are respectively provided with a bushing sleeved on the periphery of the transmission shaft, and the oil outlet of the first oil inlet channel is positioned between the two bushings.
Further, one end of the bushing is provided with a thrust portion extending outward.
Further, the inner wall of the mounting hole is provided with a first annular groove corresponding to the oil outlet of the first oil inlet channel.
Further, the oil inlet of the second oil inlet channel corresponds to the first ring groove in position.
Furthermore, a second annular groove corresponding to the oil outlet of the second oil inlet channel is formed in the transmission shaft, and the oil inlet of the third oil inlet channel corresponds to the second annular groove in position.
Furthermore, the transmission shaft and the rotating shaft are in interference fit.
Furthermore, one end of the connecting seat, which is close to the gear, is provided with a first sealing ring.
And simultaneously, the utility model also provides a high pressure common rail system, including altogether the rail pipe, still include foretell injection pump transmission structure, the injection pump of injection pump transmission structure is connected through defeated oil pipe altogether the rail pipe.
And simultaneously, the utility model also provides an engine, the engine includes foretell injection pump transmission structure.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does: the utility model discloses a set up first oil feed way, second oil feed way, third oil feed way, first oil return way, second oil return way and form the lubricating oil return circuit, can last to lubricate for the inside and transmission shaft of injection pump through the lubricating oil return circuit, can improve lubricated effect, can also play the effect of cooling for the injection pump, improve the stability of injection pump work, guarantee the transmission efficiency of transmission shaft.
Drawings
Fig. 1 is a schematic structural view of a transmission structure of an oil injection pump of the present invention;
FIG. 2 is a schematic structural view of the connecting seat of the present invention;
fig. 3 is a schematic structural diagram of the medium-high pressure common rail system of the present invention.
Wherein: 1-an oil injection pump, 2-a rotating shaft, 3-a connecting seat, 4-a transmission shaft, 5-a mounting hole, 6-a gear, 7-a first oil inlet channel, 8-a third oil inlet channel, 9-a second oil inlet channel, 10-a first oil return channel, 11-a second oil return channel, 12-a bushing, 13-a thrust part, 14-a first ring groove, 15-a second ring groove, 16-a first sealing ring, 17-a common rail pipe, 18-an oil delivery pipe and 19-a second sealing ring.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, a fuel injection pump transmission structure comprises a fuel injection pump 1, wherein a connecting seat 3 for connecting an engine body is arranged at one end of the fuel injection pump 1 close to a rotating shaft 2, and the connecting seat 3 is locked with the fuel injection pump 1 through a bolt. A transmission shaft 4 and a mounting hole 5 for mounting the transmission shaft 4 are arranged in the connecting seat 3. The one end of transmission shaft 4 cup joints in the periphery of pivot 2, and the other end is equipped with gear 6, and gear 6 passes through bolt locking at the terminal surface of transmission shaft 4, and when connecting seat 3 was installed on the engine body, gear 6 stretched into the engine originally internally to drive through the internal gear of engine. The connecting seat 3 is provided with a first oil inlet channel 7 communicated with the mounting hole 5, the rotating shaft 2 is internally provided with a third oil inlet channel 8 communicated with the inside of the oil injection pump 1 and used for conveying lubricating oil to moving parts inside the oil injection pump 1, and the transmission shaft 4 is internally provided with a second oil inlet channel 9 communicated with the first oil inlet channel 7 and the third oil inlet channel 8. One end of the fuel injection pump 1 close to the rotating shaft 2 is provided with a first oil return passage 10 communicated with the interior of the fuel injection pump 1, and used for guiding out lubricating oil in the fuel injection pump 1, a second oil return passage 11 corresponding to the first oil return passage 10 is arranged on the connecting seat 3, and the first oil inlet passage 7, the second oil inlet passage 9, the third oil inlet passage 8, the first oil return passage 10 and the second oil return passage 11 form a lubricating oil loop. Can last lubricate with transmission shaft 4 for injection pump 1 inside through the lubricating oil return circuit, can improve lubricated effect, can also play the effect of cooling down for injection pump 1, improve the stability of injection pump work, guarantee the transmission efficiency of transmission shaft.
In this embodiment, the both ends of mounting hole 5 are equipped with respectively and cup joint in 4 outlying bushes 12 of transmission shaft, and the oil-out of first oil feed way 7 is located between two bushes 12, and the one end of bush 12 is equipped with the thrust portion 13 that extends to the outside, and bush 12 can play the effect of support and thrust to transmission shaft 4, can improve transmission shaft 4's rotation precision, avoids transmission shaft 4 and connecting seat 3 contact friction, can improve transmission shaft 4 and connecting seat 3's life.
The inner wall of the mounting hole 5 is provided with a first annular groove 14 corresponding to the oil outlet of the first oil inlet channel 7, and the oil inlet of the second oil inlet channel 9 corresponds to the first annular groove 14 in position. A second annular groove 15 corresponding to the oil outlet of the second oil inlet channel 9 is arranged in the transmission shaft 4, the oil inlet of the third oil inlet channel 8 corresponds to the second annular groove 15 in position, and second sealing rings 19 are respectively arranged on the rotating shafts 2 at two sides of the second annular groove 15.
The transmission shaft 4 and the rotating shaft 2 are in interference fit. One end of the connecting base 3 close to the gear 6 is provided with a first sealing ring 16 for sealing between the connecting base 3 and the engine body.
A high-pressure common rail system comprises a common rail pipe 17 and the fuel injection pump transmission structure, wherein a fuel injection pump 1 of the fuel injection pump transmission structure is connected with the common rail pipe 17 through a fuel delivery pipe 18.
An engine comprises the fuel injection pump transmission structure.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (10)
1. A transmission structure of an oil injection pump comprises the oil injection pump (1), and is characterized in that one end of the oil injection pump (1) close to a rotating shaft (2) is provided with a connecting seat (3) used for connecting an engine body, a transmission shaft (4) and a mounting hole (5) used for mounting the transmission shaft (4) are arranged in the connecting seat (3), one end of the transmission shaft (4) is sleeved on the periphery of the rotating shaft (2), the other end of the transmission shaft is provided with a gear (6), the connecting seat (3) is provided with a first oil inlet channel (7) communicated with the mounting hole (5), a third oil inlet channel (8) communicated with the inside of the oil injection pump (1) is arranged in the rotating shaft (2), a second oil inlet channel (9) communicated with the first oil inlet channel (7) and the third oil inlet channel (8) is arranged in the transmission shaft (4), one end of the oil injection pump (1) close to the rotating shaft (2) is provided with a first oil return channel (10) communicated with the inside of the oil injection pump (1), and a second oil return channel (11) corresponding to the first oil return channel (10) is arranged on the connecting seat (3), and the first oil inlet channel (7), the second oil inlet channel (9), the third oil inlet channel (8), the first oil return channel (10) and the second oil return channel (11) form a lubricating oil loop.
2. The transmission structure of the fuel injection pump according to claim 1, wherein two ends of the mounting hole (5) are respectively provided with a bushing (12) sleeved on the periphery of the transmission shaft (4), and the oil outlet of the first oil inlet channel (7) is located between the two bushings (12).
3. An injection pump transmission according to claim 2, characterized in that one end of the bush (12) is provided with a thrust portion (13) extending to the outside.
4. The transmission structure of an injection pump according to claim 1, characterized in that the inner wall of the mounting hole (5) is provided with a first annular groove (14) corresponding to the oil outlet of the first oil inlet channel (7).
5. The transmission structure of an injection pump of claim 4, characterized in that the oil inlet of the second oil inlet channel (9) corresponds in position to the first annular groove (14).
6. The transmission structure of the oil injection pump according to claim 1, wherein a second ring groove (15) corresponding to the oil outlet of the second oil inlet channel (9) is formed in the transmission shaft (4), and the oil inlet of the third oil inlet channel (8) corresponds to the second ring groove (15).
7. The transmission structure of an injection pump according to claim 1, characterized in that the transmission shaft (4) and the rotating shaft (2) are in interference fit.
8. The injection pump transmission according to claim 1, characterized in that a first sealing ring (16) is provided at the end of the connecting socket (3) close to the gear wheel (6).
9. A high-pressure common rail system comprising a common rail pipe (17), characterized by further comprising the injection pump transmission structure of any one of claims 1 to 8, the injection pump (1) of the injection pump transmission structure being connected to the common rail pipe (17) by an oil delivery pipe (18).
10. An engine comprising the fuel injection pump transmission structure of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023092700.8U CN213928598U (en) | 2020-12-21 | 2020-12-21 | Injection pump transmission structure, high-pressure common rail system and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023092700.8U CN213928598U (en) | 2020-12-21 | 2020-12-21 | Injection pump transmission structure, high-pressure common rail system and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213928598U true CN213928598U (en) | 2021-08-10 |
Family
ID=77154713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023092700.8U Active CN213928598U (en) | 2020-12-21 | 2020-12-21 | Injection pump transmission structure, high-pressure common rail system and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213928598U (en) |
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2020
- 2020-12-21 CN CN202023092700.8U patent/CN213928598U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230118 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |