CN217380737U

CN217380737U - Engine

Info

Publication number: CN217380737U
Application number: CN202220015633.XU
Authority: CN
Inventors: 张晏源; 徐孝军; 贡伟红
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-01-04
Filing date: 2022-01-04
Publication date: 2022-09-06
Anticipated expiration: 2032-01-04

Abstract

The utility model provides an engine, include: the gear chamber cover is internally provided with a first cavity; the oil pump is arranged in the first cavity; the engine oil pump cover is fixed to the gear chamber cover, a second cavity is arranged on one side, close to the first cavity, of the engine oil pump cover, a pressure release valve is arranged on the other side of the engine oil pump cover, and the second cavity is symmetrical to the first cavity; a first oil port is formed in the second cavity, the pressure release valve comprises a second oil port arranged along the radial direction of the pressure release valve, a valve core is arranged between the first oil port and the second oil port, and the second oil port is communicated with the outside of the first cavity; an oil pan located at the bottom of the engine and used to store oil. The utility model discloses an in integrated gear chamber cap with oil pump and relevant subassembly, make compact structure, the good reliability. The oil pump has good pressure relief capacity and low maintenance rate.

Description

Engine

Technical Field

The utility model belongs to the technical field of the engine technique and specifically relates to an oil pump of engine.

Background

In the prior art, the space in a gear chamber cover of an engine is limited, an oil pump and related components are integrated in the gear chamber cover, and the length of the engine along the axial direction of a crankshaft is correspondingly increased on the premise of ensuring the quality reliability of the oil pump. Therefore, it is necessary to provide an engine with a compact oil pump to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oil pump compact structure's engine.

According to an aspect of the present invention, there is provided an engine, comprising:

the gear chamber cover is internally provided with a first cavity;

the oil pump is arranged in the first cavity;

the engine oil pump cover is fixed to the gear chamber cover, a second cavity is arranged on one side, close to the first cavity, of the engine oil pump cover, a pressure release valve is arranged on the other side of the engine oil pump cover, and the second cavity is symmetrical to the first cavity;

a first oil port is formed in the second cavity, the pressure release valve comprises a second oil port arranged along the radial direction of the pressure release valve, a valve core is arranged between the first oil port and the second oil port, and the second oil port is communicated with the outside of the first cavity;

an oil pan located at the bottom of the engine and used for storing oil;

when the oil pressure in the oil pump is too high, the engine oil pushes the valve core open, the first oil port is communicated with the second oil port, and the engine oil passes through the first oil port and the second oil port from the first cavity in sequence and directly flows back to the oil pan after being decompressed.

Preferably, still be equipped with oil inlet way and oil outlet in the gear chamber cap, the oil inlet way is including the oil inlet of locating the terminal surface in the gear chamber cap, and oil inlet way and first cavity intercommunication, the oil outlet way is including the oil-out of locating the terminal surface in the gear chamber cap, and oil outlet way and first cavity intercommunication.

Preferably, the first cavity includes oil feed chamber, oil outlet chamber and first mounting hole, the oil feed chamber is including the oil feed tank of locating first mounting hole circumferencial direction and the first oil storage portion of intercommunication oil feed tank and oil feed way, the oil outlet chamber is including the oil outlet tank of locating first mounting hole circumferencial direction and the second oil storage portion of intercommunication oil outlet tank and oil outlet way.

Preferably, the second cavity includes a first oil chamber and a second oil chamber, the first oil chamber and the second oil chamber are symmetrically arranged, the first oil port is arranged in the second oil chamber, and the pressure relief valve is obliquely arranged from the second oil port towards the oil outlet direction.

Preferably, the oil pump comprises an inner rotor and an outer rotor, a low-pressure cavity and a high-pressure cavity are formed between the inner rotor and the outer rotor, the low-pressure cavity is communicated with the oil inlet groove, and the high-pressure cavity is communicated with the oil outlet groove.

Preferably, still include belt pulley subassembly and bent axle, the belt pulley subassembly includes first main part and the first installation department of extending to gear chamber cover inboard from first main part, bent axle front end is located to first installation department cover, the radial outer end of first installation department is equipped with first spacing portion.

Preferably, the radial outside at first installation department is established to the inner rotor cover, the inner rotor includes the inner rotor mounting hole, the inner rotor mounting hole is equipped with the spacing portion of second, first spacing portion and the spacing portion of second are mutually supported, and inner rotor and belt pulley component are each other for the relative rotation setting of non-.

Preferably, still include organism and oil pan, the organism is equipped with first oil duct, first oil duct upwards extends and bends towards the direction of gear chamber cover from the organism bottom, first oil duct intercommunication oil pan and oil inlet duct.

Preferably, still include oil cleaner, still be equipped with second oil duct, third oil duct and main oil duct in the organism, the second oil duct intercommunication oil outlet channel and oil cleaner. The third oil passage communicates with the oil filter and the main oil passage.

Preferably, the air conditioner further comprises an air inlet side and an air outlet side, wherein the air outlet side is provided with a first filter mounting seat, the air inlet side is provided with a second filter mounting seat, and the first filter mounting seat and the second filter mounting seat are used non-simultaneously.

Compared with the prior art, the utility model provides an engine has following beneficial effect:

the oil pump and related components are integrated into the gear chamber cover, so that the structure is compact and the reliability is high. The oil pump has good pressure relief capacity and low maintenance rate.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a perspective view of an engine of the present invention;

FIG. 2 is an exploded view of the gear chamber cover of the present invention;

fig. 3 is a sectional view of the gear chamber cover of the present invention;

fig. 4 is a perspective view of the engine body of the present invention;

fig. 5 is a cross-sectional view of the engine body of the present invention;

fig. 6 is a partial sectional view of a gear chamber cover according to the present invention;

fig. 7 is a front view of the gear chamber cover of the present invention;

FIG. 8 is a partial cross-sectional view of the engine oil pump cover of the present invention;

FIG. 9 is a front view of the engine oil pump cover of the present invention;

fig. 10 is an exploded view of the front end structure of the crankshaft of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will refer to the accompanying drawings to describe specific embodiments of the present invention. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

Referring to fig. 1, 2 and 3, the present invention discloses an engine 100, comprising: the engine oil pump comprises a gear chamber cover 1, an oil pump 2, a belt pulley assembly 3, an oil pump cover 4, a crankshaft 5, an engine body 6, an oil filter 7 and an oil pan 8. The gear chamber cover 1 is arranged at the front end of the machine body 6, and the oil pan 8 is arranged at the bottom of the machine body 6. Referring to fig. 5, the body 6 includes an intake side 601 and an exhaust side 602, and the oil filter 7 is provided on the exhaust side 602 of the body 6.

Referring to fig. 4, the end surface of the body 6 close to the gear chamber cover 1 is taken as the front end surface. The bottom of the machine body 6 is provided with a first oil duct 61, the first oil duct 61 extends upward from the bottom surface of the machine body 6 and is bent toward the front end surface, and the first oil duct 6 includes a third oil port 611 located on the front end surface. A second oil passage 62 is further provided in the machine body 6, the second oil passage 62 is communicated with the oil filter 7, and the second oil passage 62 includes a fourth oil port 621 on the front end face.

Referring to fig. 2, a first cavity 10 is arranged inside the gear chamber cover 1. The oil pump 2 comprises an inner rotor 21 and an outer rotor 22, and the oil pump 2 is arranged in the first cavity 10. An oil inlet 1011 and an oil outlet 1021 are arranged on the inner end face of the gear chamber cover 1. Referring to fig. 6, the first cavity 10 includes an oil inlet cavity 11 and an oil outlet cavity 12, the oil inlet 1011 communicates with the oil inlet cavity 11 through an oil inlet passage 101, and the oil outlet cavity 12 communicates with an oil outlet 1021 through an oil outlet passage 102.

Referring to fig. 5, the body 6 is also provided therein with a third oil passage 63, a fourth oil passage 64, a main oil passage 68, a crankshaft mounting portion 65 for arranging the crankshaft 5, and a camshaft mounting portion 66 for arranging the camshaft. The third oil passage 63 extends from the exhaust side 602 of the engine body 6 in the direction of the intake side 601 and communicates the oil filter 7 and the main oil passage 68. The fourth oil passage 64 extends from the crankshaft mounting portion 65 in the direction of the camshaft mounting portion 66, and the fourth oil passage 64 and the third oil passage 63 are arranged to intersect.

Referring to fig. 2 and 6, an oil inlet channel 101 and an oil outlet channel 102 are further disposed in the gear chamber cover 1 and located on two sides of the first chamber 10, respectively. The oil inlet channel 101 extends from the oil inlet 1011, and the oil outlet channel 102 extends from the oil outlet 1021. The third oil port 611 is communicated with the oil inlet 1011, and the fourth oil port 621 is communicated with the oil outlet 1021. The first oil passage 61 communicates with the oil pan 8.

The engine oil is sucked into the first oil passage 61 from the oil pan 8 by a strainer (not labeled), enters the oil inlet cavity 11 through the oil inlet channel 101, is pumped into the oil outlet cavity 12 by the engine oil pump 2, and then sequentially enters the oil filter 7 through the oil outlet channel 102 and the second oil passage 61. The oil filtered by the oil filter 7 is supplied from the third oil passage 63 to the intake side 601.

The engine oil in the third oil passage 63 firstly reaches the fourth oil passage 64 and flows to two ends of the fourth oil passage 64 to lubricate the crankshaft 5 and a camshaft (not labeled) respectively. And then to the main oil gallery 68 for lubrication of other engine components. The fourth oil passage 64 is located above the crankshaft mounting portion 65. In this embodiment, the fourth oil passage 64 and the third oil passage 63 are arranged in a crossing manner, and engine oil can directly lubricate a gear and a camshaft after passing through the filter, so that the lubricating efficiency is improved.

In this embodiment, a first filter mounting seat 67 is provided on the exhaust side 602 of the housing 6, while a second filter mounting seat (not shown) is machined on the intake side 601 of the housing 6. First filter mount pad 67 and second filter mount pad can select one of them for use according to the actual work demand of engine. The oil filter 7 can be mounted on the air outlet side 602, especially when the space on the air inlet side 601 is limited and the oil filter cannot be mounted.

Referring to fig. 6 and 7, the first cavity 10 includes a first mounting hole 13 for arranging the crankshaft 5. The oil feed chamber 11 includes an oil feed groove 112 provided in a circumferential direction of the first mounting hole 13 and a first oil reservoir 111 communicating the oil feed groove 112 and the oil feed passage 101. The oil outlet chamber 12 includes an oil outlet groove 122 provided in the circumferential direction of the first mounting hole 13, and a second oil reservoir 121 communicating the oil outlet groove 122 and the oil outlet passage 102.

The oil inlet groove 112 and the oil outlet groove 122 are respectively arranged on two sides of the first mounting hole 13 in the diameter direction. The inner rotor 21 rotates the outer rotor 22 and forms a low pressure chamber 201 and a high pressure chamber 202 with each other. The low pressure chamber 201 communicates with the oil feed groove 112, and the high pressure chamber 202 communicates with the oil discharge groove 122. Referring to fig. 10, the inner rotor 21 includes an inner rotor mounting hole 201, and a second stopper 211 is provided in the inner rotor mounting hole 201.

The pulley assembly 3 includes a first body portion 32 located outside the gear chamber cover 1 and a first mounting portion 31 extending from the first body portion 32 in the direction of the crankshaft 5. The first mounting portion 31 is fitted over the front end of the crankshaft 5 and both are positioned by a pin. The first mounting portion 31 is provided at its radially outer end with a first stopper portion 311. The second limiting portion 211 and the first limiting portion 311 are matched through a plane, the inner rotor 21 is sleeved at the radial outer end of the first mounting portion 31, and the inner rotor 21 is driven by the crankshaft 5.

Referring to fig. 2, 8, and 9, the engine oil pump cover 4 includes a relief valve 41, a second cavity 42 provided on the first cavity 10 side, and a second mounting hole 43. The second mounting hole 43 and the first mounting hole 13 are coaxially arranged. The second cavity 42 is disposed corresponding to the first cavity 10, and the second cavity 42 includes a first oil chamber 421 disposed corresponding to the oil inlet chamber 11 and a second oil chamber 422 disposed corresponding to the oil outlet chamber 12.

The relief valve 41 includes a first oil port 411 provided in the second oil chamber 422, a second oil port 412 provided along a radial direction thereof, and a spool 413 provided between the first oil port 411 and the second oil port 412. The relief valve 41 is provided obliquely outside the oil pump cover 4. When the oil pressure in the second oil chamber 422 is overloaded, the spool 413 moves upward in the axial direction of the relief valve 41. The valve body 413 is opened, the first port 411 and the second port 412 are communicated, the second port 412 is communicated with the outside of the oil pump 2, and the oil directly returns to the oil pan 8.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. An engine, comprising:

the gear chamber cover is internally provided with a first cavity;

the oil pump is arranged in the first cavity;

an oil pan located at the bottom of the engine and used for storing oil;

2. The engine of claim 1, wherein an oil inlet passage and an oil outlet passage are further disposed in the gear chamber cover, the oil inlet passage includes an oil inlet disposed in an inner end surface of the gear chamber cover, the oil inlet passage communicates with the first cavity, the oil outlet passage includes an oil outlet disposed in the inner end surface of the gear chamber cover, and the oil outlet passage communicates with the first cavity.

3. The engine of claim 2, wherein the first cavity comprises an oil inlet chamber, an oil outlet chamber and a first mounting hole, the oil inlet chamber comprises an oil inlet groove arranged in the circumferential direction of the first mounting hole and a first oil storage part communicating the oil inlet groove and the oil inlet passage, and the oil outlet chamber comprises an oil outlet groove arranged in the circumferential direction of the first mounting hole and a second oil storage part communicating the oil outlet groove and the oil outlet passage.

4. The engine of claim 3, wherein the second chamber comprises a first oil chamber disposed symmetrically with the oil inlet chamber and a second oil chamber disposed symmetrically with the oil outlet chamber, the first oil port is disposed in the second oil chamber, and the pressure relief valve is disposed obliquely from the second oil port toward the oil outlet.

5. The engine of claim 3, characterized in that the oil pump comprises an inner rotor and an outer rotor, a low pressure cavity and a high pressure cavity are formed between the inner rotor and the outer rotor, the low pressure cavity is communicated with the oil inlet groove, and the high pressure cavity is communicated with the oil outlet groove.

6. The engine of claim 5, further comprising a pulley assembly and a crankshaft, wherein the pulley assembly comprises a first main body portion and a first mounting portion extending from the first main body portion to the inner side of the gear chamber cover, the first mounting portion is sleeved on the front end of the crankshaft, and a first limiting portion is arranged at the radial outer end of the first mounting portion.

7. The engine of claim 6, wherein the inner rotor is sleeved on the radial outer side of the first mounting portion, the inner rotor includes an inner rotor mounting hole, the inner rotor mounting hole is provided with a second limiting portion, the first limiting portion and the second limiting portion are mutually matched, and the inner rotor and the belt pulley assembly are arranged in a non-relative rotation manner.

8. The engine according to claim 2, further comprising an engine body provided with a first oil passage extending upward from a bottom of the engine body and bent in a direction of the gear chamber cover, and an oil pan communicating the oil pan and the oil inlet passage.

9. The engine of claim 8, further comprising an oil filter, wherein the engine body further comprises a second oil passage, a third oil passage, and a main oil passage, wherein the second oil passage communicates the oil passage with the oil filter, and the third oil passage communicates the oil filter with the main oil passage.

10. The engine of claim 1, further comprising an intake side and an exhaust side, the exhaust side having a first filter mount, the intake side having a second filter mount, the first filter mount and the second filter mount being used non-simultaneously.