CN107725184A - A kind of power takeoff at rear end of engine - Google Patents
A kind of power takeoff at rear end of engine Download PDFInfo
- Publication number
- CN107725184A CN107725184A CN201711097788.2A CN201711097788A CN107725184A CN 107725184 A CN107725184 A CN 107725184A CN 201711097788 A CN201711097788 A CN 201711097788A CN 107725184 A CN107725184 A CN 107725184A
- Authority
- CN
- China
- Prior art keywords
- power takeoff
- bearing
- housing
- rear end
- engine
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/06—Combinations of engines with mechanical gearing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
The invention discloses a kind of power takeoff at rear end of engine, including power takeoff input and power takeoff output end and power takeoff housing, the power takeoff enclosure interior is provided with the bearing bore for installing bearing, the power takeoff housing can be embedded at flywheel shell and with the dismantled and assembled connection of the flywheel shell, and the part that the power takeoff housing is embedded at the flywheel shell is provided with the oil leab communicated with the bearing bore.Because its housing can be embedded in flywheel shell, and with the dismantled and assembled connection of flywheel shell, thus solve the problems, such as that current power takeoff at rear end of engine dismounting is difficult, the part of the invention that flywheel shell is embedded in power takeoff housing is also provided with the oil leab communicated with the bearing bore in auxiliary-drive casing body simultaneously, directly lubricated inside power takeoff so as to realize, with at present using external oil duct lubricate power takeoff internal bearings by the way of compared with, the installing space of engine interior is not only saved, while also reduces production cost.
Description
Technical field
The present invention relates to engine torque extracting machine technical field, more particularly to a kind of power takeoff at rear end of engine.
Background technology
With the continuous development of society, the demand of heavy cement stirring conveying vehicle and large-tonnage special-purpose vehicle commercially
Increase, the power takeoff of engine and the matching deficiency of vehicle dynamical system occur, seriously affect engine upper end and move
The reliability and safety of Force system, its main cause are that the power takeoff used is mainly direct by the crank pulley of front end
By belt drive, the shortcomings that this is not only small there is output torque, and noise is big, it is also easy to cause power takeoff even engine sheet
The lost of life of body.
The rear-end power takeoff device driven in engine rear end by crankshaft toothed wheel thus is generated, its main operational principle is logical
Cross crankshaft toothed wheel and drive idle gear, then drive power takeoff gear shaft to be rotated by idle gear, will be revolved by power takeoff gear shaft
Turn movement output.
Although current rear-end power takeoff device overcomes the shortcomings that front end power takeoff output torque is small and noise is big, at present
The housing of power takeoff and the shell cast of engine flywheel become one structure, and cause the dismounting of power takeoff to become very inconvenient,
And the lubrication of the bearing in power takeoff needs to realize by external oil duct, and this not only causes gathering around for engine interior space
Squeeze, and also add manufacturing cost.
Therefore, a kind of both convenient disassembly how are developed, and can realizes the internal rear-end power takeoff device directly lubricated, is current
The technical problem of those skilled in the art's urgent need to resolve.
The content of the invention
It is an object of the invention to provide a kind of power takeoff at rear end of engine, to cause the convenient disassembly of rear-end power takeoff device, and
And can realize that therein directly lubricates, so as to the saving of cost of implementation.
To solve above-mentioned prior art problem, the present invention provides a kind of power takeoff at rear end of engine, including power takeoff input
End, power takeoff output end, power takeoff housing and the power takeoff end cap for being installed on the power takeoff shell end, the power takeoff
Enclosure interior is provided with the bearing bore for installing bearing, and the power takeoff housing can be embedded in flywheel shell and fly with described
The dismantled and assembled connection of housing is taken turns, the part that the power takeoff housing is embedded at the flywheel shell is provided with to be communicated with the bearing bore
Oil leab.
Preferably, the power takeoff output end is provided with output flange.
Preferably, the power takeoff housing and the flywheel shell bolt connection.
Preferably, the oil leab specifically includes：
It is opened in annular oil groove that is on the power takeoff housing and being communicated with flywheel shell fuel feed hole；
One end communicates with the annular oil groove, the power takeoff fuel feed hole that the other end communicates with the bearing bore；
One end communicates with the bearing bore, the power takeoff spill port that the other end communicates with gear-box.
Preferably, in addition to it is arranged at the O-ring seals of the annular oil groove both sides.
Preferably, the power takeoff fuel feed hole includes：
First Oil Guide road and the second Oil Guide road and the intercommunicating pore being arranged on the annular oil groove, the first Oil Guide road
Along the axially arranged of the power takeoff housing, the intercommunicating pore connects in the first Oil Guide road with the annular oil groove, described
Second Oil Guide road being radially arranged along the power takeoff housing, and its simultaneously with the first Oil Guide road and the bearing bore phase
It is logical.
Preferably, the bearing for the close power takeoff input side being arranged in the bearing bore is cylinder roller bearing,
A side bearing close to power takeoff output end is deep groove ball bearing.
Preferably, it is provided between the cylinder roller bearing and deep groove ball bearing for limiting bearing inner race axial float
First gear axle spacer, the cylinder roller bearing is provided with for limiting its outer race shaft close to the side of power takeoff input
To the back-up ring of play, the deep groove ball bearing compresses its bearing outer ring close to the side of output end by power takeoff end cap, passes through
Output flange compresses its bearing inner race.
Preferably, in addition to the second gear axle that is arranged between the inner ring of the output flange and the deep groove ball bearing
Spacer, and it is provided with sealing device between the second gear axle spacer and the gear shaft of the power takeoff at rear end of engine.
Preferably, it is provided with outside framework oil seal between the power takeoff end cap and the second gear axle spacer.
As can be seen from the above technical solutions, power takeoff at rear end of engine provided by the present invention, because its housing can be embedding
In flywheel shell, and with the dismantled and assembled connection of flywheel shell, thus efficiently solve the dismounting of current power takeoff at rear end of engine
The problem of difficult, at the same the present invention power takeoff housing be embedded at flywheel shell part be also provided with auxiliary-drive casing body
The oil leab that bearing bore communicates, the oil leab is after power takeoff is installed on flywheel shell by with flying on flywheel shell
Hub fuel feed hole communicates, and bell housing fuel feed hole communicates with the oil leab in gear-box, directly moistens inside power takeoff so as to realize
It is sliding, compared with external oil duct is lubricated by the way of power takeoff internal bearings, not only save the installation of engine interior with present
Space, while also reduce production cost.
Brief description of the drawings
Scheme of installation of the power takeoff at rear end of engine that Fig. 1 is provided by the embodiment of the present invention on flywheel shell；
The partial sectional view for the power takeoff at rear end of engine that Fig. 2 is provided by the embodiment of the present invention.
In figure 1 above-Fig. 2,1 is power takeoff gear, and 2 be flywheel shell, and 3 be idle gear, and 4 be crankshaft toothed wheel, and 5 be that cylinder rolls
Sub- bearing, 6 be O-ring seal, and 7 be first gear axle spacer, and 8 be bearing bore, and 9 be power takeoff end cap, and 10 be outside framework oil seal, 11
It is deep groove ball bearing for output flange, 12,13 be bolt of cover, and 14 be the second Oil Guide road, and 15 be the first Oil Guide road, and 16 be gear
Circle, 17 be power takeoff housing, and 18 be second gear axle spacer, and A is flywheel shell fuel feed hole, and B is annular oil groove, and C is power takeoff
Spill port.
Embodiment
The core of the present invention is to provide a kind of power takeoff at rear end of engine, and the power takeoff at rear end of engine is by using removable
The power takeoff shell of dress is embedded in flywheel casing, the dismounting difficult problem of the power takeoff effectively solved, while the present invention is carried
The part that the power takeoff at rear end of engine of confession is embedded on flywheel casing is also provided with communicating with the bearing bore in auxiliary-drive casing body
Oil leab, it is achieved thereby that the inside of power takeoff directly lubricates, effectively save the inside installing space of engine, simultaneously
Reduce production cost.
In order that those skilled in the art more fully understand the solution of the present invention, below in conjunction with the accompanying drawings and specific embodiment party
The present invention is described in further detail for formula.
It refer to the peace of power takeoff at rear end of engine that Fig. 1 accompanying drawings 1 are provided by the embodiment of the present invention on flywheel shell
Fill schematic diagram.
The power takeoff housing 17 for the power takeoff at rear end of engine that the embodiment of the present invention is provided is embedded in flywheel shell 2,
And be meshed with 2 dismantled and assembled connection of flywheel shell, power takeoff gear 1 with idle gear 3, the crankshaft toothed wheel 4 of idle gear 3 and engine
It is meshed.In the course of the work, the crankshaft toothed wheel 4 of engine drives idle gear 3 to rotate, and rotation is passed to power taking by idle gear 3
Device gear 1, and eventually through the gear shaft output torque of power takeoff.
Power takeoff at rear end of engine disclosed in this invention includes power takeoff input, power takeoff output end, auxiliary-drive casing
Body 17 and the power takeoff end cap 9 for being installed on the end of power takeoff housing 17, power takeoff housing 17 are internally provided with for installation axle
The bearing bore 8 held, the power takeoff housing 17 can be embedded in flywheel shell 2 and with 2 dismantled and assembled connection of flywheel shell, and power takeoff
The part that housing 17 is embedded in flywheel shell 2 is provided with the oil leab communicated with above-mentioned bearing bore 8.
Power takeoff at rear end of engine provided by the present invention, because its power takeoff housing 17 can be embedded in flywheel shell 2,
And with 2 dismantled and assembled connection of flywheel shell, thus solve the problems, such as that the dismounting of current power takeoff at rear end of engine is difficult, simultaneously
The part that the present invention is embedded at flywheel shell 2 in power takeoff housing 17 is also provided with and the phase of bearing bore 8 in power takeoff housing 17
Logical oil leab, the oil leab power takeoff be installed on flywheel shell 2 after by with the flywheel shell on flywheel shell 2
Fuel feed hole A is communicated, and the fuel feed hole A on bell housing communicates with gear inlet oil duct, is directly lubricated inside power takeoff so as to realize, with
Compared at present by the way of external oil duct lubricates power takeoff internal bearings, not only save the installing space of engine interior,
Also reduce production cost simultaneously.
More specifically, Fig. 1 and Fig. 2, the engine rear end power taking that Fig. 1 is provided by the embodiment of the present invention be please also refer to
The scheme of installation of device, the partial sectional view for the power takeoff at rear end of engine that Fig. 2 is provided by the embodiment of the present invention.
Power takeoff housing 17 is embedded in flywheel shell 2, and is fastened power takeoff housing 17 by four bolts of cover 13
In on flywheel shell 2, so as to realize that power takeoff relative to the dismantled and assembled of flywheel shell, can also use other modes to realize certainly
Power takeoff it is dismantled and assembled, such as take screw thread to coordinate and power takeoff housing is tightened on flywheel shell can similarly realize power takeoff
Dismantled and assembled connection, be provided with bearing bore 8 in power takeoff housing 17, bearing be installed, the outer ring of bearing passes through heat in bearing bore 8
The mode of pressure is fixedly installed on the inwall of power takeoff housing 17, and inner ring is fixed using interference fit and the gear shaft of power takeoff
Connection.
The power takeoff at rear end of engine that the embodiment of the present invention is provided is defeated on the gear shaft of power takeoff by being installed on
Go out flange 11 and realize power output, the output flange takes by cushion block and also cross the cushion block and output flange 11 and being tightened in
Bolt on the gear shaft of power device is anchored on power takeoff gear shaft, and 6 are provided with output flange and is used to be connected with power transmission shaft
The mounting hole of power is exported, output flange 11 is connected with the gear shaft of power takeoff by involute spline, and is fastened by bolts
In on the gear shaft of power takeoff.
The oil leab of power takeoff at rear end of engine provided in the embodiment of the present invention specifically includes：
The annular oil groove B for being opened on power takeoff housing 17 and being communicated with flywheel shell fuel feed hole A；
One end communicates with above-mentioned annular oil groove B, the power takeoff fuel feed hole that the other end communicates with bearing bore 8；
One end communicates with bearing bore 8, the power takeoff spill port C that the other end communicates with the gear-box of engine.
After installing, flywheel shell fuel feed hole A is connected with annular oil groove B, and such lubricating oil can pass through flywheel
Housing fuel feed hole A enters annular oil groove B, the axle entered by annular oil groove B by power takeoff fuel feed hole inside power takeoff housing 17
Hold chamber 8 bearing lubrication, unnecessary lubricating oil are flowed back to engine gearbox through power takeoff spill port C and eventually enters into oil sump.
In order to prevent the oil leakage in annular oil groove B, also set respectively in annular oil groove B both sides in the present embodiment
O-ring seal 6 prevents the leakage of lubricating oil.
Because the diameter of power takeoff fuel feed hole and power takeoff spill port C is smaller, directly by power taking in actual production process
The outside of device housing 17 is directly punched to inner side to be not easily accomplished very much, and this will easily lead to the fracture of drill bit, therefore be
The convenience of processing, the power takeoff fuel feed hole in the present embodiment include the first Oil Guide road 15 and the second Oil Guide road 14 and are arranged at
Intercommunicating pore on annular oil groove B, the first Oil Guide road 15 is along the axially arranged of power takeoff housing 17, and by annular oil groove B
Intercommunicating pore communicates with above-mentioned annular oil groove B, the second being radially arranged along power takeoff housing 17 of Oil Guide road 14, and with the first Oil Guide
Road 15 and bearing bore 8 communicate.The depth that so effective reduction drill bit drills every time in process, reduce the difficulty of processing
Degree.
It is close in the present embodiment in order to improve the bearing capacity for the power takeoff at rear end of engine that the embodiment of the present invention is provided
The bearing of power takeoff input specifically uses cylinder roller bearing 5, and the bearing close to power takeoff output end uses deep groove ball bearing
12, in order that the inner ring of above-mentioned two bearing on the gear shaft of power takeoff it is fixed more firmly, prevent that bearing inner race is axial
Play, has installed first gear axle spacer 7 in the present embodiment additional between two bearings, and cylinder roller bearing 5 inputs close to power takeoff
The side at end is provided with the back-up ring 16 for limiting its outer ring axial float, and deep groove ball bearing 12 passes through close to the side of output end
Power takeoff end cap 9 compresses its bearing outer ring, and its bearing inner race is compressed by output flange 11.So as to by power takeoff housing 17 with
And the type face on the gear shaft of power takeoff, and above-mentioned back-up ring 16 and power takeoff end cap 9 and output flange 11 realize it is above-mentioned
Positioning of the inner ring and outer ring of bearing in bearing bore 8, in order to prevent the leakage of lubricating oil, in power takeoff end cap 9 and power takeoff
Seal, such as O-ring seal have been installed additional at the cooperation of housing 17, as shown in Figure 2.
For further prioritization scheme, prevent lubricating oil from being revealed from deep groove ball bearing 12 close to the side of output end, this reality
Apply and be preferably provided with second gear axle spacer 18, the second tooth in example between the inner ring of output flange 11 and deep groove ball bearing 12
Wheel shaft spacer 18 is set on the gear shaft of power takeoff, and its between the gear shaft of power takeoff at rear end of engine be provided with it is close
Seal apparatus, such as O-ring seal, for preventing the leakage of lubricating oil.
In order to further optimize such scheme, the present embodiment also power takeoff end cap 9 and second gear axle spacer 18 it
Between be provided with outside framework oil seal 10, upper surface and the power takeoff end cap 9 of outside framework oil seal 10 coordinate, seal face and second gear axle every
Set 18 coordinates, so as to prevent lubricating oil from being revealed by the power takeoff end cap 9 and second gear axle spacer 18 rotated against.
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention.It should be pointed out that the ordinary skill for the art
For personnel, under the premise without departing from the principles of the invention, some improvement and modification, these improvement can also be carried out to the present invention
Also fallen into modification in the protection domain of the claims in the present invention.
Claims (10)
1. a kind of power takeoff at rear end of engine, including power takeoff input, power takeoff output end, power takeoff housing (17) and peace
Power takeoff end cap (9) loaded on power takeoff housing (17) end, the power takeoff housing (17) are internally provided with for pacifying
Fill the bearing bore (8) of bearing, it is characterised in that the power takeoff housing (17) can be embedded in flywheel shell (2) and with it is described
Flywheel shell (2) dismantled and assembled connection, the part that the power takeoff housing (17) is embedded at the flywheel shell (2) is provided with and institute
State the oil leab that bearing bore (8) communicates.
2. power takeoff at rear end of engine according to claim 1, it is characterised in that the power takeoff output end is provided with defeated
Go out flange (11).
3. power takeoff at rear end of engine according to claim 1, it is characterised in that the power takeoff housing (17) with it is described
Flywheel shell (2) bolt connection.
4. power takeoff at rear end of engine according to claim 1, it is characterised in that the oil leab specifically includes：
It is opened in annular oil groove (B) that is on the power takeoff housing (17) and being communicated with flywheel shell fuel feed hole (A)；
One end communicates with the annular oil groove (B), the power takeoff fuel feed hole that the other end communicates with the bearing bore (8)；
One end communicates with the bearing bore (8), the power takeoff spill port (C) that the other end communicates with gear-box.
5. power takeoff at rear end of engine according to claim 4, it is characterised in that also include being arranged at the annular oil groove
The O-ring seal (6) of both sides.
6. power takeoff at rear end of engine according to claim 4, it is characterised in that the power takeoff fuel feed hole includes：
First Oil Guide road (15) and the second Oil Guide road (14) and the intercommunicating pore being arranged on the annular oil groove (B), described
One Oil Guide road (15) is axially arranged along the power takeoff housing (17), and the intercommunicating pore is by the first Oil Guide road (15) and institute
State annular oil groove (B) connection, the second Oil Guide road (14) being radially arranged along power takeoff housing (17), and its simultaneously with
The first Oil Guide road (15) and the bearing bore (8) communicate.
7. according to the power takeoff at rear end of engine described in claim 1-6 any one, it is characterised in that be arranged at the bearing
The bearing of close power takeoff input side in chamber (8) is cylinder roller bearing (5), close to a side axle of power takeoff output end
Hold as deep groove ball bearing (12).
8. power takeoff at rear end of engine according to claim 7, it is characterised in that the cylinder roller bearing (5) and depth
The first gear axle spacer (7) for limiting bearing inner race axial float, the cylinder rolling are provided between ditch ball bearing (12)
Sub- bearing (5) is provided with the back-up ring (16) for limiting its outer ring axial float, the depth close to the side of power takeoff input
Ditch ball bearing (12) compresses its bearing outer ring close to the side of output end by power takeoff end cap (9), passes through output flange (11)
Compress its bearing inner race.
9. power takeoff at rear end of engine according to claim 8, it is characterised in that also include being arranged at the output flange
(11) between the inner ring of the deep groove ball bearing (12) and it is set in the second gear axle spacer (18) of the gear shaft of power takeoff,
And the second gear axle spacer (18) is provided with sealing device between the gear shaft of power takeoff.
10. power takeoff at rear end of engine according to claim 9, it is characterised in that the power takeoff end cap (9) with it is described
Outside framework oil seal is provided between second gear axle spacer (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097788.2A CN107725184A (en) | 2017-11-09 | 2017-11-09 | A kind of power takeoff at rear end of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711097788.2A CN107725184A (en) | 2017-11-09 | 2017-11-09 | A kind of power takeoff at rear end of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725184A true CN107725184A (en) | 2018-02-23 |
Family
ID=61214894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711097788.2A Pending CN107725184A (en) | 2017-11-09 | 2017-11-09 | A kind of power takeoff at rear end of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725184A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736938A (en) * | 2018-12-14 | 2019-05-10 | 玉柴联合动力股份有限公司 | A kind of novel PTO assembly and its assembly method of diesel engine |
| CN110319306A (en) * | 2019-07-02 | 2019-10-11 | 广西玉柴机器股份有限公司 | A kind of diesel engine flywheel shell |
| CN110816263A (en) * | 2019-12-06 | 2020-02-21 | 安徽华菱汽车有限公司 | Vehicle, power system and power takeoff thereof |
| CN112228212A (en) * | 2020-10-21 | 2021-01-15 | 马鞍山市常立发机械制造有限公司 | Power output device of diesel engine for engineering machinery |
-
2017
- 2017-11-09 CN CN201711097788.2A patent/CN107725184A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736938A (en) * | 2018-12-14 | 2019-05-10 | 玉柴联合动力股份有限公司 | A kind of novel PTO assembly and its assembly method of diesel engine |
| CN109736938B (en) * | 2018-12-14 | 2021-04-20 | 玉柴联合动力股份有限公司 | Novel PTO assembly of diesel engine and assembling method thereof |
| CN110319306A (en) * | 2019-07-02 | 2019-10-11 | 广西玉柴机器股份有限公司 | A kind of diesel engine flywheel shell |
| CN110816263A (en) * | 2019-12-06 | 2020-02-21 | 安徽华菱汽车有限公司 | Vehicle, power system and power takeoff thereof |
| CN110816263B (en) * | 2019-12-06 | 2024-04-26 | 安徽华菱汽车有限公司 | Vehicle, power system and power takeoff thereof |
| CN112228212A (en) * | 2020-10-21 | 2021-01-15 | 马鞍山市常立发机械制造有限公司 | Power output device of diesel engine for engineering machinery |
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Application publication date: 20180223 |