CN202992013U - Balancing shaft - Google Patents

Balancing shaft Download PDF

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Publication number
CN202992013U
CN202992013U CN 201220603728 CN201220603728U CN202992013U CN 202992013 U CN202992013 U CN 202992013U CN 201220603728 CN201220603728 CN 201220603728 CN 201220603728 U CN201220603728 U CN 201220603728U CN 202992013 U CN202992013 U CN 202992013U
Authority
CN
China
Prior art keywords
trunnion shaft
power wheel
motive power
oil pump
balancing shaft
Prior art date
Application number
CN 201220603728
Other languages
Chinese (zh)
Inventor
余伟
李为松
兰州
Original Assignee
奇瑞汽车股份有限公司
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 奇瑞汽车股份有限公司 filed Critical 奇瑞汽车股份有限公司
Priority to CN 201220603728 priority Critical patent/CN202992013U/en
Application granted granted Critical
Publication of CN202992013U publication Critical patent/CN202992013U/en

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Abstract

The utility model relates to the field of engines, and particularly relates to a balancing shaft. One end of the balancing shaft is provided with a balancing block, and a power wheel for driving an oil pump is arranged on the balancing shaft. Because the power wheel for driving the oil pump is arranged on the balancing shaft, the balancing shaft drives the power wheel to supply power to the oil pump so as to reduce the load of a camshaft of a gas distribution mechanism, thereby preventing the deformation and fracture of the camshaft; meanwhile, the balancing shaft, besides the bearing block, doesn't carry other components, thereby preventing the risks of associated damage.

Description

Trunnion shaft

Technical field

The utility model relates to engine art, particularly a kind of trunnion shaft.

Background technique

Transmission Engine adopts timing chain drive system to drive high pressure oil pump, its exist more drawback as: take up room large, complex structure, gearing friction is large; For addressing these problems, a kind of concrete scheme being disclosed in Chinese utility model patent CN200920303452.1: is provided with the oil pump driving cam on the camshaft of distribution device, drives high pressure oil pump.When adopting this kind structure, need bear the pulsed fuel feed pump plunger on the camshaft of distribution device up to the pump oil pressure more than 5000N, this camshaft also drives all component work of distribution device with the rotating speed about 3000rpm simultaneously.Camshaft very easily produces distortion, is easy to fly off such as tappet etc. with other parts of camshaft coupling, causes the valve knock-on, can affect the stability of whole distribution device work; Camshaft fracture when serious, perhaps distribution device damages, and causes complete machine to be scrapped.

The model utility content

The purpose of this utility model is to provide a kind of trunnion shaft for driving oil pump.

For reaching above effect, the technical solution adopted in the utility model is: a kind of trunnion shaft, and an end of trunnion shaft is provided with equilibrium block, and trunnion shaft is provided with the motive power wheel that drives oil pump.

Compared with prior art, there is following technique effect in the utility model:

The motive power wheel that drives oil pump is set on trunnion shaft, and oil pump will drive motive power wheel by trunnion shaft motivational drive will be provided, and make the camshaft load of distribution device reduce, and avoid distortion, the fracture of camshaft; Simultaneously, owing to not carrying other part on trunnion shaft except equilibrium block, avoided related damage risk.

Description of drawings

Fig. 1 is perspective view of the present utility model;

Fig. 2 is structural representation of the present utility model.

Embodiment

Below in conjunction with Fig. 1, Fig. 2, the utility model is done being described in further detail:

Consult Fig. 1, Fig. 2, a kind of trunnion shaft, an end of trunnion shaft 10 is provided with equilibrium block 11, and trunnion shaft 10 is provided with the motive power wheel 12 that drives oil pump.In order to reduce gearing friction, save cost, simplify the high pressure oil pump drive system, removed the parts such as gear, adopt actuated by cams, the motive power wheel 12 that drives oil pump herein is cam.Drive 10 one-tenths monolithic constructions of motive power wheel 12 and trunnion shaft of oil pump, by direct casting or forge out, enforcement facilitates.

Due to when working, need to bear the pulsed pump oil pressure up to several thousand Ns on motive power wheel 12, for improving the bearing capacity of trunnion shaft 10, described motive power wheel 12 is arranged near on trunnion shaft 10 axle bodies of axle journal 13, supporting effect due to axle journal 13, can reduce the distortion of trunnion shaft 10 axle bodies, more preferably, described motive power wheel 12 is arranged between two adjacent axle journals 13.Apart from more hour, its support effect is better, therefore motive power wheel 12 is arranged between two less adjacent axle journal 13b, 13c of interval between motive power wheel adjacent axle journal 13b, the 13c in two, 12 side.

Claims (6)

1. trunnion shaft, an end of trunnion shaft (10) is provided with equilibrium block (11), it is characterized in that: trunnion shaft (10) is provided with the motive power wheel (12) that drives oil pump.
2. trunnion shaft as claimed in claim 1, it is characterized in that: described motive power wheel (12) is cam.
3. trunnion shaft as claimed in claim 1 or 2, it is characterized in that: described motive power wheel (12) becomes monolithic construction with trunnion shaft (10).
4. trunnion shaft as claimed in claim 3 is characterized in that: described motive power wheel (12) is arranged near on trunnion shaft (10) axle body of axle journal.
5. trunnion shaft as claimed in claim 4, it is characterized in that: described motive power wheel (12) is arranged between two adjacent axle journals.
6. trunnion shaft as claimed in claim 5, it is characterized in that: described motive power wheel (12) is arranged between two less adjacent axle journals of spacing.
CN 201220603728 2012-11-15 2012-11-15 Balancing shaft CN202992013U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220603728 CN202992013U (en) 2012-11-15 2012-11-15 Balancing shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220603728 CN202992013U (en) 2012-11-15 2012-11-15 Balancing shaft

Publications (1)

Publication Number Publication Date
CN202992013U true CN202992013U (en) 2013-06-12

Family

ID=48563194

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220603728 CN202992013U (en) 2012-11-15 2012-11-15 Balancing shaft

Country Status (1)

Country Link
CN (1) CN202992013U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832593A (en) * 2014-11-28 2015-08-12 北汽福田汽车股份有限公司 Balance shaft assembly and engine
FR3027989A1 (en) * 2014-10-30 2016-05-06 Skf Ab BALANCING SHAFT AND INTERNAL COMBUSTION ENGINE
FR3031784A1 (en) * 2015-01-20 2016-07-22 Skf Ab BALANCING SHAFT AND INTERNAL COMBUSTION ENGINE
FR3031783A1 (en) * 2015-01-20 2016-07-22 Skf Ab DEVICE COMPRISING A TREE, AT LEAST THREE BEARINGS AND A STRUCTURE FOR SUPPORTING A RADIAL LOAD
CN108223551A (en) * 2016-12-22 2018-06-29 上海汽车集团股份有限公司 Engine and combinations thereof formula balance shaft

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3027989A1 (en) * 2014-10-30 2016-05-06 Skf Ab BALANCING SHAFT AND INTERNAL COMBUSTION ENGINE
CN104832593A (en) * 2014-11-28 2015-08-12 北汽福田汽车股份有限公司 Balance shaft assembly and engine
CN104832593B (en) * 2014-11-28 2017-01-18 北汽福田汽车股份有限公司 Balance shaft assembly and engine
FR3031784A1 (en) * 2015-01-20 2016-07-22 Skf Ab BALANCING SHAFT AND INTERNAL COMBUSTION ENGINE
FR3031783A1 (en) * 2015-01-20 2016-07-22 Skf Ab DEVICE COMPRISING A TREE, AT LEAST THREE BEARINGS AND A STRUCTURE FOR SUPPORTING A RADIAL LOAD
CN108223551A (en) * 2016-12-22 2018-06-29 上海汽车集团股份有限公司 Engine and combinations thereof formula balance shaft
CN108223551B (en) * 2016-12-22 2020-08-18 上海汽车集团股份有限公司 Engine and combined balance shaft thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130612

Termination date: 20151115