CN110566656A - Intermediate helical gear thrust device of engine - Google Patents

Intermediate helical gear thrust device of engine Download PDF

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Publication number
CN110566656A
CN110566656A CN201910955676.9A CN201910955676A CN110566656A CN 110566656 A CN110566656 A CN 110566656A CN 201910955676 A CN201910955676 A CN 201910955676A CN 110566656 A CN110566656 A CN 110566656A
Authority
CN
China
Prior art keywords
thrust
gear shaft
oil groove
intermediate gear
face
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.)
Pending
Application number
CN201910955676.9A
Other languages
Chinese (zh)
Inventor
王黎明
季永会
韩乐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Diesel Heavy Industry Co Ltd
Original Assignee
Henan Diesel Heavy Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Diesel Heavy Industry Co Ltd filed Critical Henan Diesel Heavy Industry Co Ltd
Priority to CN201910955676.9A priority Critical patent/CN110566656A/en
Publication of CN110566656A publication Critical patent/CN110566656A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0467—Elements of gearings to be lubricated, cooled or heated
    • F16H57/0469—Bearings or seals
    • F16H57/0471—Bearing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)

Abstract

In order to solve the problem that a fixing screw is broken due to looseness of an intermediate gear shaft and a thrust disc caused by unreasonable structures in the prior art, the invention provides an intermediate helical gear thrust device of an engine, which comprises a thrust disc and a thrust ring, wherein the thrust disc is arranged on the thrust ring; the thrust plate is detachably arranged at the end part of the intermediate gear shaft, is attached to the left end face of the intermediate bevel gear and is used for limiting the intermediate bevel gear; the right side surface of the middle bevel gear is attached to the left side end surface of a thrust ring arranged on the middle gear shaft; the right end face of the thrust ring is attached to the machine body; wherein, the thrust disc is in spacing joint with the front end box. The intermediate gear shaft and the machine body are matched more firmly, the intermediate gear shaft cannot be separated from the machine body hole, and the reliability of the thrust device is greatly improved.

Description

Intermediate helical gear thrust device of engine
Technical Field
The invention belongs to the technical field of diesel engine manufacturing, and particularly relates to an intermediate helical gear thrust device of an engine.
Background
The middle gear is an important force transmission part of the engine and is an important bridge for connecting a crankshaft and a camshaft, on some diesel engines with higher strengthening degree, the middle duplicate gear bears larger power, the existing strengthened engines generally adopt a bevel gear structure, so that the gears can generate periodically-changed axial thrust inevitably, and the key of the working reliability of the gears is how to accurately ensure the axial clearance of the gears and overcome the axial force. Therefore, the design of the engine intermediate gear thrust device must be scientific, reasonable and high in reliability. The existing typical and well designed thrust device of the intermediate gear of the engine is like patent 'an intermediate duplex helical gear transmission device of the engine', in the device, an intermediate gear shaft is arranged on a machine body in an interference manner, and the thrust of the intermediate helical gear is realized through a thrust ring and a thrust disc. However, when the thrust device is used for an engine structure for propelling power, because the power transmitted by the gear changes along with the change of the rotating speed, the axial thrust generated by the bevel gear also changes periodically, and when the thrust device works for a long time, the intermediate gear shaft and the thrust disc can be loosened under the action of alternating axial force, so that the intermediate gear shaft is loosened and separated from the engine body, and the thrust disc can also be loosened, so that a fixing screw is pulled apart, and the service life of the intermediate gear is seriously influenced.
Disclosure of Invention
The invention provides an intermediate helical gear thrust device of an engine, aiming at solving the problem that a fixing screw is broken due to looseness of an intermediate gear shaft and a thrust disc caused by unreasonable structures in the prior art.
In order to achieve the purpose, the invention adopts the specific scheme that: an intermediate helical gear thrust device of an engine comprises a thrust disc and a thrust ring; the thrust plate is detachably arranged at the end part of the intermediate gear shaft, is attached to the left end face of the intermediate bevel gear and is used for limiting the intermediate bevel gear; the right side surface of the middle bevel gear is attached to the left side end surface of a thrust ring arranged on the middle gear shaft; the right end face of the thrust ring is attached to the machine body; wherein, the thrust disc is in spacing joint with the front end box.
The thrust disc is a stepped shaft formed by three sections of cylinders with different diameters, the diameter of the middle section cylinder is the largest, and the diameter of the right section cylinder is the smallest; the right section of the cylinder of the thrust plate is positioned in the stepped hole of the end face of the left end of the intermediate gear shaft, is in clearance fit with the stepped hole and is connected with the intermediate gear shaft through a fastening screw; the left section of the cylinder of the thrust plate is positioned in a front end box of the engine.
An O-shaped ring is arranged in the middle of the left section of the cylinder of the thrust disc; the right end face of a middle section cylinder of the thrust disc is attached to the left end face of the middle gear shaft, and an annular oil groove, a radial oil groove I and a radial oil groove II are formed in the end faces; the radial oil grooves I are uniformly distributed on the outer side of the annular oil groove and are communicated with the annular oil groove; the radial oil groove II is a long strip-shaped groove, penetrates through the annular oil groove, one end of the radial oil groove is located on the outer side of the annular oil groove, and the other end of the radial oil groove is located on the inner side of the annular oil groove and communicated with an oil duct on the intermediate gear shaft.
The left, middle and right parts of the excircle of the intermediate gear shaft are respectively provided with radial unthreaded holes, and the number of the unthreaded holes V is two and the number of the unthreaded holes II is 1 from left to right in sequence; the right unthreaded hole II is communicated with an oil duct of the machine body; the left end face of the intermediate gear shaft is provided with an axial unthreaded hole III; the light hole III is communicated with the bottoms of the two light holes V and the light holes II; the left end face of the intermediate gear shaft is also provided with a light hole V which is communicated with the upper part of the light hole V.
Has the advantages that: according to the thrust device, the right outer circle of the intermediate gear shaft is in interference fit with the machine body, meanwhile, the right step surface is attached to the right end surface of the machine body, the intermediate gear shaft generates an outward movement trend under the action of axial thrust, under the action of the interference force between the intermediate gear shaft and the machine body and the check ring benefit between the step surface of the intermediate gear shaft and the right end surface of the machine body, the intermediate gear shaft is more firmly matched with the machine body, the intermediate gear shaft cannot be separated from a machine body hole, and the reliability of the thrust device is greatly improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a left side view of the thrust plate of the present invention.
In the figure: 1. a thrust plate; 2. a front end box; 3. a middle helical gear; 4. a thrust ring; 5. an intermediate gear shaft; 6. a body; 7. a unthreaded hole I; 8. a unthreaded hole II; 9. a light hole III; 10. a light hole IV; 11. a light hole V; 12. an O-shaped ring; 13. fastening screws; 14. a radial oil groove II; 15. a radial oil groove I; 16. an annular oil groove.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-2, an intermediate helical gear thrust device comprises an intermediate gear shaft 5, a thrust disk 1 and a thrust ring 4. The middle gear shaft 5 is a revolving body, a step shaft is arranged on the excircle, wherein the right side of the small excircle is in interference fit with the mounting hole of the machine body 6, the left side of the small excircle is in clearance fit with the bushing hole of the middle helical gear 3, the large excircle is suspended in the inner cavity of the machine body 6, and the end surface of the step is attached to the mounting surface on the right side of the machine body 6; the left side on the 5 excircles of intermediate gear axle, in, the right-hand member respectively has a radial unthreaded hole, be 2 unthreaded holes V10 respectively, and 1 unthreaded hole II 8, right side unthreaded hole II 8 diameter is great, and communicate with each other with unthreaded hole I7 on the organism 6, 5 left sides holes of intermediate gear axle have a step hole, there is an axial through hole outside the hole terminal surface to be unthreaded hole III 9, communicate with 3 radial unthreaded holes V10 on the excircle respectively, unthreaded hole II 8, there is a screw thread blind hole in the middle part, 5 left side terminal surface upper portions of intermediate gear axle have a unthreaded hole V11 to communicate with each other with radial unthreaded hole V10 in the left side on the excircle.
The thrust disc 1 is a stepped shaft formed by three sections of cylinders with different diameters, wherein the diameter of the cylinder at the middle section is the largest, and the diameter of the cylinder at the right section is the smallest; the right section of the cylinder of the thrust plate 1 is positioned in a stepped hole on the end surface of the left end of the intermediate gear shaft 5, is in clearance fit with the stepped hole and is fixedly connected with the intermediate gear 5 through a fastening screw 13, the left section of the cylinder of the thrust plate 1 is positioned in a front end box 2 of an engine, an O-shaped ring groove is arranged in the middle of an outer circle, and an O-shaped ring 12 is embedded in the outer circle, so that engine oil in the front end box 2 is prevented from leaking from the thrust plate; a strictly controlled gap B is formed between the left end face of a cylinder in the middle section of the thrust disc 1 and the right end face of the front end box 2, the right end face of the cylinder in the middle section is attached to the left end face of the intermediate gear shaft 5, an annular oil groove 16, four radial oil grooves I15 and four radial oil grooves II 14 are formed in the end faces, the radial oil grooves I15 are located on the outer side of the annular oil groove 16, are uniformly distributed along the circumference, are communicated with the annular oil groove 16, and are used for storing engine oil and enhancing the lubricating effect; the radial oil groove II 14 is a long groove and penetrates through the annular oil groove 16, one end of the radial oil groove II is positioned on the outer side of the annular oil groove 16, and the other end of the radial oil groove II is positioned on the inner side of the annular oil groove 16 and communicated with the unthreaded hole V11.
The thrust ring 4 is sleeved on the intermediate gear shaft 5, an inner hole of the thrust ring 4 is in clearance fit with an outer circle of the intermediate gear shaft 5, the right end face of the thrust ring 4 is attached to the left end face of the machine body 6, and a clearance between the left end face and the right end face of the intermediate helical gear 3 is strictly controlled.
The lubricating principle of the invention is as follows: pressure machine oil flows out from unthreaded hole I7 on organism 6, flows through unthreaded hole III 9, unthreaded hole IV 10 and gets into on intermediate gear shaft 5 and the intermediate helical gear bush fitting surface and lubricate, then a part of machine oil flows to lubricate on the fitting surface of intermediate helical gear 3 and thrust collar 4, another part of machine oil gets into in the annular oil groove 16 on the thrust disc 1 terminal surface, flow into again and lubricate on the fitting surface of thrust disc 1 and intermediate helical gear 3, and 4 radial oil grooves I15 on the thrust disc 1 terminal surface can store some machine oil, have strengthened lubricated effect.
It is to be understood that: the directional descriptions described herein are in reference to fig. 1.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily change or replace the present invention within the technical scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.

Claims (4)

1. An engine intermediate helical gear thrust device comprises a thrust disc (1) and a thrust ring (4); the thrust plate is characterized in that the thrust plate (1) is detachably arranged at the end part of the intermediate gear shaft (5) and attached to the left end face of the intermediate helical gear (3) and used for limiting the intermediate helical gear (3); the right side surface of the middle bevel gear (3) is attached to the left end surface of a thrust ring (4) arranged on the middle gear shaft (5); the right end face of the thrust ring (4) is attached to the machine body (6); wherein, the thrust disc (1) is in limit fit with the front end box (2).
2. The intermediate helical gear thrust device of an engine according to claim 1, wherein: the thrust disc (1) is a stepped shaft formed by three sections of cylinders with different diameters, the diameter of the middle section of the stepped shaft is the largest, and the diameter of the right section of the stepped shaft is the smallest; the right section of the cylinder of the thrust plate (1) is positioned in a stepped hole on the end surface of the left end of the intermediate gear shaft (5), is in clearance fit with the stepped hole and is connected with the intermediate gear shaft (5) through a fastening screw (13); the left section of the cylinder of the thrust disc (1) is positioned in a front end box (2) of the engine.
3. An engine intermediate helical gear thrust device according to claim 1 or 2, wherein: an O-shaped ring (12) is arranged in the middle of the left section of the cylinder of the thrust disc (1); the right end face of a cylinder in the middle section of the thrust disc (1) is attached to the left end face of the intermediate gear shaft (5), and an annular oil groove (16), a radial oil groove I (15) and a radial oil groove II (14) are formed in the end faces; the radial oil grooves I (15) are uniformly distributed on the outer side of the annular oil groove (16) and are communicated with the annular oil groove (16); the radial oil groove II (14) is a long strip-shaped groove, penetrates through the annular oil groove (16), one end of the radial oil groove II is located on the outer side of the annular oil groove (16), and the other end of the radial oil groove II is located on the inner side of the annular oil groove (16) and is communicated with an oil passage on the intermediate gear shaft (5).
4. The intermediate helical gear thrust device of an engine according to claim 3, wherein: the left, middle and right parts of the excircle of the intermediate gear shaft (5) are respectively provided with radial unthreaded holes, and the left part, the middle part and the right part are sequentially provided with two unthreaded holes V (10) and 1 unthreaded hole II (8) from left to right; the right unthreaded hole II (8) is communicated with an oil duct of the machine body (6); the left end face of the intermediate gear shaft (5) is provided with an axial unthreaded hole III (9); the light hole III (9) is communicated with the bottoms of two light holes V (10) and two light holes II (8); the left end face of the intermediate gear shaft (5) is also provided with a light hole V (11) which is communicated with the upper part of the light hole V (10).
CN201910955676.9A 2019-10-09 2019-10-09 Intermediate helical gear thrust device of engine Pending CN110566656A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910955676.9A CN110566656A (en) 2019-10-09 2019-10-09 Intermediate helical gear thrust device of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910955676.9A CN110566656A (en) 2019-10-09 2019-10-09 Intermediate helical gear thrust device of engine

Publications (1)

Publication Number Publication Date
CN110566656A true CN110566656A (en) 2019-12-13

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051757A (en) * 1991-02-04 1993-01-08 Isuzu Motors Ltd Idle gear structure of gear train
RU2191937C2 (en) * 2000-06-07 2002-10-27 ОАО "Ижевский завод нефтяного машиностроения" Spiral cylindrical gearing with thrust rings
DE10317421A1 (en) * 2003-04-15 2004-11-25 Volkswagen Ag Planetary transmission esp. automatic transmission for motor vehicles has metal bearing plates as stop plates for planet wheels, and hard metal plates as stop plates for roller bearing bodies
CN104214206A (en) * 2014-08-28 2014-12-17 河南柴油机重工有限责任公司 Thrust device of engine camshaft
CN204458784U (en) * 2014-12-22 2015-07-08 潍柴动力股份有限公司 A kind of camshaft thrust structure
CN104989808A (en) * 2015-07-30 2015-10-21 河南柴油机重工有限责任公司 An engine intermediate dual bevel gear transmission device
CN204921925U (en) * 2015-07-30 2015-12-30 河南柴油机重工有限责任公司 Pair helical drive device in middle of engine
CN208041095U (en) * 2018-04-17 2018-11-02 广东德力柴油机有限公司 A kind of vertical type single-cylinder diesel engine idle gear combined compouent mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH051757A (en) * 1991-02-04 1993-01-08 Isuzu Motors Ltd Idle gear structure of gear train
RU2191937C2 (en) * 2000-06-07 2002-10-27 ОАО "Ижевский завод нефтяного машиностроения" Spiral cylindrical gearing with thrust rings
DE10317421A1 (en) * 2003-04-15 2004-11-25 Volkswagen Ag Planetary transmission esp. automatic transmission for motor vehicles has metal bearing plates as stop plates for planet wheels, and hard metal plates as stop plates for roller bearing bodies
CN104214206A (en) * 2014-08-28 2014-12-17 河南柴油机重工有限责任公司 Thrust device of engine camshaft
CN204458784U (en) * 2014-12-22 2015-07-08 潍柴动力股份有限公司 A kind of camshaft thrust structure
CN104989808A (en) * 2015-07-30 2015-10-21 河南柴油机重工有限责任公司 An engine intermediate dual bevel gear transmission device
CN204921925U (en) * 2015-07-30 2015-12-30 河南柴油机重工有限责任公司 Pair helical drive device in middle of engine
CN208041095U (en) * 2018-04-17 2018-11-02 广东德力柴油机有限公司 A kind of vertical type single-cylinder diesel engine idle gear combined compouent mechanism

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Application publication date: 20191213