CN109296736A - Engine PTO output interface structure - Google Patents
Engine PTO output interface structure Download PDFInfo
- Publication number
- CN109296736A CN109296736A CN201811440185.2A CN201811440185A CN109296736A CN 109296736 A CN109296736 A CN 109296736A CN 201811440185 A CN201811440185 A CN 201811440185A CN 109296736 A CN109296736 A CN 109296736A
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- China
- Prior art keywords
- gear chamber
- ball bearing
- bearing
- gear
- hydraulic pump
- 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
Links
- 210000000078 claw Anatomy 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000008676 import Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- 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
- F16H57/02—Gearboxes; Mounting gearing therein
-
- 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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or 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
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
- F16H2057/0221—Axial adjustment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Transmission (AREA)
Abstract
The invention belongs to engine design fields, it is related to a kind of engine PTO output interface structure, gear chamber cover including the connection of mutual pairing, gear chamber, deep groove ball bearing is installed in the bearing hole of the gear chamber cover, angular contact ball bearing is installed in the bearing hole of gear chamber, the hydraulic pump gear both ends diameter of axle is respectively supported in the inner hole of deep groove ball bearing and angular contact ball bearing, the tooth form of hydraulic pump gear is helical teeth, the angular contact ball bearing outer end is fixed by hydraulic pump terminal pad, deep groove ball bearing is fixed by front end positioning cover plate, bearing retaining spring is set between the front end positioning cover plate and deep groove ball bearing.Not only adjustment is convenient for the interface structure, moreover it is possible to greatly improve the tolerance grade requirement of PTO output interface.
Description
Technical field
The invention belongs to engine design fields, are related to a kind of engine PTO output interface structure.
Background technique
Since steadily comfortable characteristic, hydraulic-driven have obtained more and more extensive fortune in all kinds of machinery to hydraulic-driven
With.Since the pressure of most machinery hydraulic systems is from hydraulic pump, the driving method of hydraulic pump is divided into engine again and directly drives
Dynamic and vehicle belt pulley conveys two ways.More widely make in such a way that diesel engine directly drives in small tonnage fork car
With, thus need to be designed on the diesel engine of mating small tonnage fork car one for driving hydraulic pump use PTO output interface (such as Fig. 1,
And it must assure that the verticality of hydraulic pump installation end face and hydraulic pump driving shaft mounting hole, hydraulic pump installation seam allowance and hydraulic pump pass
The concentricity of moving axis mounting hole.
Such diesel engine mostly uses Helical gear Transmission, and large axial force, therefore domestic conventional diesel engine will be generated in transmission
PTO output interface structure (such as Fig. 3), both ends are all made of tapered roller bearing, and front end needs gap adjusting structure, i.e., between bearing
Gap adjusting block and positioning screw position bearing, and eliminating axial gap ensures that bearing is felt relieved, but adjustment process is difficult, it is more difficult to meet
Verticality and the concentricity requirement of PTO delivery outlet, while also periodic maintenance being needed to adjust, it, can substantially in vehicle insufficient space
Increase customer care cost.The imports diesel engine PTO output interface structure such as Isuzu Motors (such as Fig. 9), both ends are all made of deep-groove ball axis
It holds, although deep groove ball bearing self-centering does not have to adjustment axial gap, since deep groove ball bearing receiving axial force ability is lower,
Single shaft strength is unable to satisfy balancing axial force request, therefore win cooperation need to be all made of by the cooperation of two bearing internal external circles
To share balancing axial thrust.It is needed under the state using hot jacket assembly technology, assembly difficulty, assembly cost is larger.
Summary of the invention
The present invention is in view of the above-mentioned problems, provide a kind of engine PTO output interface structure, and not only adjustment is just for the interface structure
It is prompt, moreover it is possible to greatly improve the tolerance grade requirement of PTO output interface.
Technical solution according to the invention: a kind of engine PTO output interface structure, it is characterised in that: including mutually right
Gear chamber cover, the gear chamber for closing connection, install deep groove ball bearing in the bearing hole of the gear chamber cover, in the bearing hole of gear chamber
Angular contact ball bearing is installed, the hydraulic pump gear both ends diameter of axle is respectively supported at the inner hole of deep groove ball bearing and angular contact ball bearing
In, the tooth form of hydraulic pump gear is helical teeth, and the angular contact ball bearing outer end is fixed by hydraulic pump terminal pad, deep-groove ball
Bearing is fixed by front end positioning cover plate, and bearing is arranged between the front end positioning cover plate and deep groove ball bearing and positions bullet
Spring.
As a further improvement of the present invention, the bearing retaining spring includes tapered portion and is integrally connected to outside tapered portion
Several elastic claws of port periphery, the tapered portion are fastenedly connected by tight fixed bolt and front end positioning cover plate, elastic claw
It is pressed in the cycle surface of deep groove ball bearing.
As a further improvement of the present invention, the gear chamber cover and the faying face of gear chamber are equipped with gear chamber cover gasket,
Positioning cover plate gasket in front end is set between front end positioning cover plate and gear chamber cover.
As a further improvement of the present invention, the gear chamber cover, gear chamber are connected by bolt-through.
As a further improvement of the present invention, the faying face of the hydraulic pump terminal pad and gear chamber setting hydraulic pump connects
Plate mat piece.
As a further improvement of the present invention, the first bolt hole is set on the gear chamber cover, is arranged second in gear chamber
Through hole is set on bolt hole, hydraulic pump terminal pad, and first bolt hole, the second bolt hole and through hole are connected by bolt
It connects.
As a further improvement of the present invention, the first pillar, the outer end of gear chamber cover is arranged in the outer end face of the gear chamber
The second pillar is arranged in face.
The technical effects of the invention are that: engine PTO output interface structure of the invention, due to single angular contact ball axis
Balancing axial thrust can be met by holding, and avoid import machine using under two deep groove ball bearing states, the necessary hot jacket of bearing is installed
Stringent assembly technology requirement.The gap adjustment that domestic conventional diesel engine PTO interface structure assembly and maintenance need is eliminated simultaneously
Structure dexterously eliminates the axial gap of the course of work by spring, solves adjustment difficulty, and primary assembly in place, substantially mentions
The verticality and concentricity of high PTO delivery outlet, while maintenance adjustment is not needed in use, due to safeguarding adjustment before avoiding
Bring is not convenient.
Engine PTO output interface structure of the invention, also improves gear chamber and gear chamber cover partial structurtes,
Hydraulic pump, which connects bolt and uses, runs through bolt hole, increases Combined machining technique and clamps lug, effectively increases PTO output interface
Tolerance grade.
Detailed description of the invention
Fig. 1 is diesel engine PTO export structure hydraulic pump scheme of installation.
Fig. 2 is that diesel engine PTO export structure hydraulic pump is installed in place schematic diagram.
Fig. 3 is the schematic diagram of existing diesel PTO output interface structure.
Fig. 4 is structural schematic diagram of the invention.
Fig. 5 is the partial schematic diagram of gear chamber, gear chamber cover.
Fig. 6 is the end view of gear chamber.
Fig. 7 is the end view of gear chamber cover.
Fig. 8 is the structural schematic diagram of bearing retaining spring.
Fig. 9 is import Isuzu Motors diesel engine PTO output interface inside configuration structure and assembling schematic diagram.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
In Fig. 1 ~ 9, including front end positioning cover plate gasket 1, front end positioning cover plate 2, bearing clearance adjusting block 3, adjusting block are fixed
Position screw 4, positioning screw locking nut 5, gear chamber cover 6, gear chamber cover gasket 7, hydraulic pump terminal pad gasket 8, hydraulic pump connect
It is fixed to connect disk 9, tapered roller bearing 10, hydraulic pump gear 11, gear chamber 12, deep groove ball bearing 13, angular contact ball bearing 14, bearing
Position spring 15, tapered portion 15-1, elastic claw 15-2, through hole 16, the second bolt hole 17, the first pillar 18, the second pillar 19, the
One bolt hole 20 etc..
As shown in Fig. 4 ~ 8, the present invention is a kind of engine PTO output interface structure, the gear including the connection of mutual pairing
Chamber cap 6, gear chamber 12 are installed deep groove ball bearing 13 in the bearing hole of the gear chamber cover 6, are installed in the bearing hole of gear chamber 12
Angular contact ball bearing 14, the 11 both ends diameter of axle of hydraulic pump gear are respectively supported at the interior of deep groove ball bearing 13 and angular contact ball bearing 14
Kong Zhong, the tooth form of hydraulic pump gear 11 are helical teeth, and 14 outer end of angular contact ball bearing is compressed solid by hydraulic pump terminal pad 9
Fixed, deep groove ball bearing 13 is fixed by front end positioning cover plate 2, between the front end positioning cover plate 2 and deep groove ball bearing 13
Bearing retaining spring 15 is set.
First bolt hole 20 is set on gear chamber cover 6, the second bolt hole 17, hydraulic pump terminal pad 9 are set in gear chamber 12
Upper setting through hole 16, first bolt hole 20, the second bolt hole 17 and through hole 16 are connected by bolt.This connection
Mode increases coupling stiffness, while can guarantee that the installation of PTO output interface is consistent with processing stress, effectively reduces hydraulic
When pump terminal pad bolt is urgent, the influence of gear chamber 12 and 6 stress deformation of gear chamber cover to tolerance.
In a particular application, gear chamber cover 6, gear chamber 12 bearing mounting hole be all made of the bearing hole of diameter 72, two holes
Combined machining can be used and a knife completes the process, effectively reduce machining accuracy error caused by two knives are processed;Meanwhile to avoid group
Hole periphery rigidity unevenly causes to will appear crooked phenomenon when processing when closing processing, in 6 structure of gear chamber 12 and gear chamber cover
It increases Combined machining to clamp technique lug (the first pillar 18, the second pillar 19), increases processing rigidity, reduce machining deformation.
Bearing retaining spring 15 is including tapered portion 15-1 and is integrally connected to the several of tapered portion 15-1 external port periphery
A elastic claw 15-2, tapered portion 15-1 are fastenedly connected by tight fixed bolt with front end positioning cover plate 2, phase on front end positioning cover plate 2
Answering joint face is arc surface, and in order to effectively be fitted and connected, elastic claw 15-2 is pressed in the cycle surface of deep groove ball bearing 13.Dress
It is in material plasticity deformed area with elastic claw 15-2 deformation after the completion, the constant pretightning force provided under plasticity zone state is provided.
In a particular application, a bearing retaining spring 15 generally four elastic claw 15-2 of setting.13 outer ring of deep groove ball bearing uses axis
It holds retaining spring 15 to be positioned, can once assemble in place, effectively avoid existing structure using bearing clearance adjusting block 4, adjust
Adjustment caused by block positioning screw is difficult.After the assembly is completed, bearing retaining spring 15 can provide the axial force of pre-add rear end, protect
Demonstrate,prove angular contact ball bearing 14 can self-centering, simultaneously as the presence of axial each part's machining errors, positions without using bearing
When spring 15, total gap is between 0.3-1.2mm, and common spring structure is positioned again without installation space using bearing
Spring 15(65Mn material) when, since rigidity is very big, the predeformation of very little also has king-sized pretightning force, therefore, Wo Menxin
The bearing retaining spring 15 of design is after reaching plastic zone, it may occur that plastic deformation, so that solution is inconsistent for pre-tightening gap,
The problem that bring pretightning force is excessive and pretightning force is inconsistent, i.e. bearing retaining spring 15 can be reached by being plastically deformed
Initial tension of spring is constant after assembly, to not influence deep groove ball bearing 13(model 6207), angular contact ball bearing 14(model
For 7207B) service life.
Gear chamber cover 6 and the faying face of gear chamber 12 are equipped with gear chamber cover gasket 7, front end positioning cover plate 2 and gear chamber cover 6
Between be arranged front end positioning cover plate gasket 1.
Gear chamber cover 6, gear chamber 12 are connected by bolt-through.
Hydraulic pump terminal pad gasket 8 is arranged in the faying face of hydraulic pump terminal pad 9 and gear chamber 12.
The first pillar 18 is arranged in the outer end face of gear chamber 12, and the second pillar 19 is arranged in the outer end face of gear chamber cover 6.
Product of the present invention one end uses deep groove ball bearing 13, and the other end uses angular contact ball bearing 14, can active balance axis
To power and radial force, and improve bearing bulk life time.By angular contact ball bearing 14 come balancing axial thrust, while by newly designing
Bearing retaining spring 15 eliminate bearing axial clearance ensure bearing feel relieved.Bearing retaining spring 15 uses 65Mn spring steel
Matter greatly reduces the deformation force of spring using four thin latch spring supported design, reduces additional increased axial force, eliminates
Bring life problems are significantly increased due to axial force in deep groove ball bearing 13.
Hydraulic pump terminal pad 9 is positioned using angular contact ball bearing 14, the model 7207B of angular contact ball bearing 14,
The multiple bearing between traditional structure such as Fig. 3 gear chamber 12 and hydraulic pump terminal pad 9 and tapered roller bearing 10 can be effectively reduced
Caused accumulated error improves the tolerance grade of PTO output interface.
Claims (7)
1. a kind of engine PTO output interface structure, it is characterised in that: gear chamber cover (6), gear including the connection of mutual pairing
Deep groove ball bearing (13) are installed in the bearing hole of the gear chamber cover (6) in room (12), established angle in the bearing hole of gear chamber (12)
Contact ball bearing (14), hydraulic pump gear (11) both ends diameter of axle are respectively supported at deep groove ball bearing (13) and angular contact ball bearing
(14) in inner hole, the tooth form of hydraulic pump gear (11) is helical teeth, and angular contact ball bearing (14) outer end is connected by hydraulic pump
It connects disk (9) to be fixed, deep groove ball bearing (13) is fixed by front end positioning cover plate (2), the front end positioning cover plate (2)
Bearing retaining spring (15) are set between deep groove ball bearing (13).
2. engine PTO output interface structure as described in claim 1, it is characterised in that: the bearing retaining spring (15)
Including tapered portion (15-1) and several elastic claws (15-2) of tapered portion (15-1) external port periphery are integrally connected to, it is described
Tapered portion (15-1) is fastenedly connected by tight fixed bolt with front end positioning cover plate (2), and elastic claw (15-2) is pressed in deep-groove ball axis
Hold the cycle surface of (13).
3. engine PTO output interface structure as described in claim 1, it is characterised in that: the gear chamber cover (6) and gear
The faying face of room (12) is equipped with gear chamber cover gasket (7), and it is fixed that front end is arranged between front end positioning cover plate (2) and gear chamber cover (6)
Position cover board gasket (1).
4. engine PTO output interface structure as described in claim 1, it is characterised in that: the gear chamber cover (6), gear
Room (12) is connected by bolt-through.
5. engine PTO output interface structure as described in claim 1, it is characterised in that: the hydraulic pump terminal pad (9) with
Hydraulic pump terminal pad gasket (8) are arranged in the faying face of gear chamber (12).
6. engine PTO output interface structure as described in claim 1, it is characterised in that: be arranged on the gear chamber cover (6)
Second bolt hole (17) is set on the first bolt hole (20), gear chamber (12), through hole is arranged on (9) in hydraulic pump terminal pad
(16), first bolt hole (20), the second bolt hole (17) and through hole (16) are connected by bolt.
7. engine PTO output interface structure as described in claim 1, it is characterised in that: the outer end of the gear chamber (12)
The first pillar (18) are arranged in face, and the second pillar (19) are arranged in the outer end face of gear chamber cover (6).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811440185.2A CN109296736A (en) | 2018-11-29 | 2018-11-29 | Engine PTO output interface structure |
Applications Claiming Priority (1)
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CN201811440185.2A CN109296736A (en) | 2018-11-29 | 2018-11-29 | Engine PTO output interface structure |
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ID=65141374
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CN201811440185.2A Pending CN109296736A (en) | 2018-11-29 | 2018-11-29 | Engine PTO output interface structure |
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CN207701646U (en) * | 2018-01-09 | 2018-08-07 | 成都航空职业技术学院 | A kind of carbon fibre composite butterfly spring |
CN209115646U (en) * | 2018-11-29 | 2019-07-16 | 一汽解放汽车有限公司 | Engine PTO output interface structure |
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CN202007854U (en) * | 2011-05-09 | 2011-10-12 | 重庆协成毕扬减振器有限公司 | Valve-piece-only type piston valve for automobile shock absorber |
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CN206592488U (en) * | 2017-03-21 | 2017-10-27 | 山东临工工程机械有限公司 | A kind of helical gear power takeoff assembly |
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CN207701646U (en) * | 2018-01-09 | 2018-08-07 | 成都航空职业技术学院 | A kind of carbon fibre composite butterfly spring |
CN209115646U (en) * | 2018-11-29 | 2019-07-16 | 一汽解放汽车有限公司 | Engine PTO output interface structure |
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