CN208431297U - A kind of gear pump involute splined shaft that can be limited certainly - Google Patents
A kind of gear pump involute splined shaft that can be limited certainly Download PDFInfo
- Publication number
- CN208431297U CN208431297U CN201820886488.6U CN201820886488U CN208431297U CN 208431297 U CN208431297 U CN 208431297U CN 201820886488 U CN201820886488 U CN 201820886488U CN 208431297 U CN208431297 U CN 208431297U
- Authority
- CN
- China
- Prior art keywords
- involute
- splined shaft
- gear
- gear pump
- limit
- 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.)
- Active
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses it is a kind of can be from the gear pump involute splined shaft of limit comprising axis body, it is circumferentially uniform on axis body external arc surface to be equipped with several involute outer splines；Equal axially spaced-apart is set there are two locating part on the involute outer spline, and the locating part of the same end is distributed on the same tip circle of the involute splined shaft on each involute outer spline.Two locating parts on the involute outer spline are equipped with certain distance apart from the corresponding end of the involute splined shaft respectively.The junction of the locating part and involute outer spline is equipped with round-corner transition.This can be from the gear pump involute splined shaft of limit, have self-centering performance and position limiting structure, not only it can realize that there is adjustability within the scope of the certain size on axial direction, but also can also be able to achieve itself Self-centering Action in radial direction, and improve the reliability of gear pump whole design；It had not only realized the lightweight of product, but also reduced material consumption；Mounting structure is simple, axial dimension is short.
Description
Technical field
The utility model relates to a kind of involute splined shafts, are specifically related to a kind of gear pump involute that can be limited certainly
Splined shaft.
Background technique
Gear pump is that swept volume changes and movement is to convey liquid or make by being formed by between pumping cylinder and meshing gear
Pressurization drum pump.Two enclosure spaces are formed by two gears, the pump housing and front and rear covers, when gear rotation, are out of gear
The volume in the space of side becomes larger from small, forms vacuum, draws liquid into, the volume in the space of gear engagement side from becoming smaller greatly, and
Liquid is squeezed into pipeline.Suction chamber and discharge chamber are that the path of contact of two gears is leaned on to separate.The outlet of gear pump
Pressure depend entirely on the size of resistance at pump discharge.Dynamical element of the gear pump as hydraulic system, because structure is simple, valence
Lattice are cheap and to the characteristics such as oil contamination is insensitive, using extremely wide in the industries such as engineering machinery, environmental sanitation, agricultural machinery and fork truck
It is general.With advances in technology, industrialized level is continuously improved, and the demand in market is also constantly being promoted, and product also just needs fast
The response market of speed.Wherein, quick, high quality, the efficient assembly for completing product also seem imperative.
In duplex and multi-gear pump, the interior selectable scheme of connection is more, such as cruciform joint, spline housing and fixed
Position set combination, rectangular spline etc., but involute spline has self-centering feature, has become the first choice when so coupling design inside
Scheme.
Splined shaft is divided to rectangle splined spindle and the big type of involute splined shaft two.However in gear pump mounted inside, it is non-gradually
The splined shaft that bursts at the seams does not have self-centering performance, and the error of the manufacturing will lead to the directions of torque transfer out of plumb of interior connection splined shaft
In axis direction, the component of torque tangential force will lead to the gear axially loaded of gear pump.As illustrated in fig. 1 and 2, common spline
Axis, majority are an axis body 1, and circumferentially uniform equipped with several external splines 2 on 1 external arc surface of axis body, and both ends have for work
The centre bore 3 that skill process needs, structure was not only simple, but also processing easy to produce and transport.But common involute splined shaft because
Without the limit method of itself, one end to internal spline can be often altered, one end seat length is caused to reach design requirement, the other end
Seat length lacks the phenomenon that being unable to reach design requirement generation；If the increase spline length of deflecting, not only will increase spline
Shaft length also will increase the weight of product.
Utility model content
To overcome the shortcomings of existing technologies, the purpose of this utility model is that: provide a kind of can use from the gear pump of limit
Involute splined shaft, mounting structure is simple, can be short from limit, axial dimension；Not only it had realized the lightweight of product, but also has reduced material
Material consumption；The splined shaft for mainly solving existing gear pump does not have self-centering performance and position limiting structure, in actual use, usually
The problem of being easy to happen axial float.
The utility model solves technical problem and adopts the following technical scheme that
It is a kind of can be from the gear pump involute splined shaft of limit comprising axis body, axis body external arc surface last week
To uniformly equipped with several involute outer splines；Equal axially spaced-apart is set there are two locating part on the involute outer spline, and
The locating part of the same end is distributed on the same tip circle of the involute splined shaft on each involute outer spline.
There is also following technical characteristics for the utility model:
Two locating parts on the involute outer spline are equipped with one apart from the corresponding end of the involute splined shaft respectively
Set a distance.
The junction of the locating part and involute outer spline is equipped with round-corner transition.
The involute splined shaft both ends are connect with the first assembling gear and the second assembling gear respectively；Wherein, described first
Assembling gear and the second assembling gear are equipped with involute inner spline, and the involute inner spline and the involute splined shaft are gradually
The external splines that bursts at the seams is adapted.
The adjacent opposite end of first assembling gear and the second assembling gear is equipped with several limiting slots, and the limit
Slot is set to involute inner spline side；Wherein, the limiting slot is adapted card with the corresponding locating part on the involute splined shaft
It connects.
The distance between limiting slot on first assembling gear and the second assembling gear is greater than on involute outer spline
Axial distance between two locating parts；Wherein, the distance between limiting slot on the first assembling gear and the second assembling gear wraps
The length of two corresponding limiting slots is included, the axial distance on involute outer spline between two locating parts includes the axial wide of two locating parts
Degree.
First assembling gear and the second assembling gear upper limit position groove and the locating part diameter on corresponding involute outer spline
To clearance fit.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, this can be from the gear pump involute splined shaft of limit, and bearing capacity is stronger, easy self-centering, and installation accuracy
It is high；In actual use, while ensure that transmission length of action, the length of axis body is more shorter than the length of common splined shaft；Symbol
Energy-saving production theory is closed, had not only realized the lightweight of product, but also reduces material consumption.
2, this can guarantee the certain size range of axis body in the axial direction from the gear pump involute splined shaft of limit
It is interior that there is adjustability, reduce splined shaft generation the phenomenon that axial excessive play in practical set；And the involute splined shaft
It is also able to achieve the Self-centering Action of itself in radial direction, further improves the reliability of gear pump whole design.
3, the junction of the gear pump involute splined shaft that can be limited certainly, locating part and involute outer spline is equipped with circle
Angle transition is avoided that stress is concentrated, improves service life.
This can be from the gear pump involute splined shaft of limit, it can be achieved that having within the scope of certain size on axial direction
Adjustability, and it is also able to achieve the Self-centering Action of itself in radial direction, improve the reliability of gear pump whole design；It was both
It realizes the lightweight of product, and reduces material consumption；Mounting structure is simple, axial dimension is short.
Detailed description of the invention
Fig. 1 is existing splined shaft schematic view of the front view.
Fig. 2 is existing splined shaft side structure schematic view.
Fig. 3 is the utility model structure diagram.
Fig. 4 is the utility model splined shaft schematic view of the front view.
Fig. 5 is the utility model splined shaft side structure schematic view.
Fig. 6 is that the utility model splined shaft and the first assembling gear and the second assembling gear assemble schematic cross-sectional view.
Wherein: 1- axis body, 2- external splines, 3- centre bore, 4- involute outer spline, 5- locating part, the first assembling gear of 6-,
The second assembling gear of 7-, 8- involute inner spline, 9- limiting slot.
Specific embodiment
Referring to shown in Fig. 3 to 6, to originally can details are as follows from the structure feature of the gear pump involute splined shaft of limit:
It is a kind of can be from the gear pump involute splined shaft of limit comprising axis body 1, on the 1 external arc surface of axis body
It is circumferentially uniform to be equipped with several involute outer splines 4；Equal axially spaced-apart sets there are two locating part on the involute outer spline 4
5, and the locating part 5 of the same end is distributed on the same tip circle of the involute splined shaft on each involute outer spline 4.Specifically
, the axially spaced-apart between two locating parts 5 on involute outer spline 4 is not unalterable, and specific size depends on
In the size of axis body 1 and its actually required fitted position of both ends assembling gear.
Wherein, the both ends of the surface of axis body 1 are equipped with the centre bore 3 for technique processing, and the edge of the both ends of the surface of axis body 1
Chamfered should all be passed through with the edge of centre bore 3；This measure can both remove the burr of part, and preventing it from sharply locating incised wound makes
User, and positioning and guiding can be played the role of；Wherein, the chamfering of centre bore 3 is used to guide the folder axis clamping of processing systems
Fixed, the chamfering of 1 end face edge of axis body is used to that the assembly of itself and assembling gear to be guided to cooperate.
As a preferred embodiment of the present invention, in conjunction with shown in Fig. 3 to 6；
Specifically, two locating parts 5 on the involute outer spline 4 are respectively apart from the corresponding end of the involute splined shaft
It is equipped with certain distance；When to realize that assembling gear and the involute splined shaft carry out assembly cooperation, assembling gear is realized
It is attached with the both ends of the involute splined shaft by spline；It being connected using spline, bearing capacity is strong, easy self-centering, and
Installation accuracy is high.
Specifically, the junction of the locating part 5 and involute outer spline 4 is equipped with round-corner transition；It can avoid stress collection
In, improve the service life of the involute splined shaft.
Wherein, which connect with the first assembling gear 6 and the second assembling gear 7 respectively；Wherein, institute
It states the first assembling gear 6 and the second assembling gear 7 is equipped with involute inner spline 8, the involute inner spline 8 and the involute
The involute outer spline 4 of splined shaft is adapted；To realize the involute splined shaft and the first assembling gear 6 and the second assembly
Gear 7 is connected using spline, and bearing capacity is strong, easy self-centering, and installation accuracy is high.
Specifically, the adjacent opposite end of first assembling gear 6 and the second assembling gear 7 is equipped with several limiting slots 9,
And the limiting slot 9 is set to 8 side of involute inner spline；Wherein, the limiting slot 9 limit corresponding on the involute splined shaft
Position part 5 is adapted clamping.Then when the involute splined shaft and the first assembling gear 6 and the second assembling gear 7 are assembled,
It can be felt relieved by the cooperation of involute outer spline 4 and involute inner spline 8, Primary Location；Then by limiting accordingly
The cooperation of slot 9 and locating part 5 carries out secondary positioning；It can so that having within the scope of the certain size of axis body 1 only in the axial direction
Tonality.Therefore after the assembly is completed, in actual use, axis body 1 can be reduced with respect to the first assembling gear 6 and the second assembling gear 7
The excessive play of axial direction, avoid its excessively alter the involute inner spline 8 to the first assembling gear 6 or the second assembling gear 7 one
End, causes one end seat length occurs to reach design requirement, and other end seat length lacks and is unable to reach design and wants
The phenomenon that asking；Improve the reliability of gear pump whole design.
To ensure that reliability and axis body 1 and the first assembling gear 6 and the second assembling gear 7 of gear pump whole design assemble
Accuracy；The distance between limiting slot 9 on first assembling gear 6 and the second assembling gear 7 D is greater than flower outside involute
Axial distance d on key 4 between two locating parts 5；Wherein, the limiting slot 9 on the first assembling gear 6 and the second assembling gear 7 it
Between distance D include two corresponding limiting slots 9 length, the axial distance d on involute outer spline 4 between two locating parts 5 includes
The axial width of two locating parts 5.When then ensuring that axis body 1 and the first assembling gear 6 and the assembly of the second assembling gear 7 are completed, really
The locating part 5 protected on involute outer spline 4 is matched with the corresponding limiting slot 9 on the first assembling gear 6 and the second assembling gear 7 respectively
It closes.Guarantee that there is adjustability within the scope of the certain size of axis body 1 in the axial direction, reduces the involute splined shaft in reality
The phenomenon that axial excessive play, occurs in assembly, improves the reliability of gear pump whole design；And it ensure that transmission engagement
While length, the length of axis body 1 is more shorter than the length of common splined shaft, not only realizes the lightweight of product, but also reduce material
Consumption.
For the reliability and axis body 1 and the first assembling gear 6 and the second assembly tooth for further ensuring that gear pump whole design
The accuracy of 7 assembly of wheel；First assembling gear 6 and 7 upper limit position groove 9 of the second assembling gear and corresponding involute outer spline 4
On 5 radial clearance fit of locating part, it is ensured that the diameter of phi d of the maximum outer circle of locating part 5 is slightly less than the first assembling gear 6 and second
Diameter of a circle Φ D where 9 slot bottom of limiting slot of 8 side of involute inner spline of assembling gear 7；To be also able to achieve in radial direction
The Self-centering Action of itself further improves the reliability of gear pump whole design；And it ensure that transmission length of action
Meanwhile the length of axis body 1 can be more shorter than the length of common splined shaft, not only realizes the lightweight of product, but also reduces material consumption.
In addition, involute outer spline 4 and involute inner spline 8 should all be handled by high-frequency quenching, surface hardness should reach
Intensity and service life are improved to 52-58HRC to reduce abrasion；Simultaneously in order to guarantee good interchangeability and versatility, gradually
The parameter of external splines 4 and involute inner spline 8 of bursting at the seams will meet GB/T3478.1-2008 " involute spline standard application manual "
Requirement.
The utility model provides a kind of gear pump involute splined shaft that can be limited certainly, and axial direction side can be achieved in one side
There is adjustability within the scope of upward certain size, the Self-centering Action of itself is on the other hand also able to achieve in radial direction, is mentioned
The high reliability of gear pump whole design；The involute splined shaft had not only realized the lightweight of product, but also reduced material consumption；
Mounting structure is simple, axial dimension is short.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. one kind can be from the gear pump involute splined shaft of limit comprising axis body, it is circumferential on axis body external arc surface
Uniformly it is equipped with several involute outer splines；It is characterized by: on the involute outer spline there are two the setting of equal axially spaced-apart
Locating part, and the locating part of the same end is distributed on the same tip circle of the involute splined shaft on each involute outer spline.
2. one kind according to claim 1 can from limit gear pump involute splined shaft, it is characterised in that: it is described gradually
Two on the external splines locating parts that burst at the seams are equipped with certain distance apart from the corresponding end of the involute splined shaft respectively.
3. one kind according to claim 1 can be from the gear pump involute splined shaft of limit, it is characterised in that: the limit
The junction of position part and involute outer spline is equipped with round-corner transition.
4. one kind according to claim 1 can be from the gear pump involute splined shaft of limit, it is characterised in that: this is gradually opened
Line splined shaft both ends are connect with the first assembling gear and the second assembling gear respectively；Wherein, first assembling gear and second
Assembling gear is equipped with involute inner spline, and the involute outer spline of the involute inner spline and the involute splined shaft is mutually fitted
Match.
5. one kind according to claim 4 can be from the gear pump involute splined shaft of limit, it is characterised in that: described the
The adjacent opposite end of one assembling gear and the second assembling gear is equipped with several limiting slots, and the limiting slot is set to involute
Internal spline side；Wherein, the limiting slot is adapted clamping with the corresponding locating part on the involute splined shaft.
6. one kind according to claim 5 can be from the gear pump involute splined shaft of limit, it is characterised in that: described the
The distance between limiting slot on one assembling gear and the second assembling gear is greater than on involute outer spline between two locating parts
Axial distance；Wherein, the distance between limiting slot on the first assembling gear and the second assembling gear includes two corresponding limiting slots
Length, the axial distance on involute outer spline between two locating parts includes the axial width of two locating parts.
7. one kind according to claim 5 can be from the gear pump involute splined shaft of limit, it is characterised in that: described the
One assembling gear and the second assembling gear upper limit position groove and the locating part radial clearance fit on corresponding involute outer spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886488.6U CN208431297U (en) | 2018-06-08 | 2018-06-08 | A kind of gear pump involute splined shaft that can be limited certainly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820886488.6U CN208431297U (en) | 2018-06-08 | 2018-06-08 | A kind of gear pump involute splined shaft that can be limited certainly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431297U true CN208431297U (en) | 2019-01-25 |
Family
ID=65100463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820886488.6U Active CN208431297U (en) | 2018-06-08 | 2018-06-08 | A kind of gear pump involute splined shaft that can be limited certainly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208431297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696354A (en) * | 2019-10-23 | 2021-04-23 | 株式会社捷太格特 | Electric oil pump apparatus |
-
2018
- 2018-06-08 CN CN201820886488.6U patent/CN208431297U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696354A (en) * | 2019-10-23 | 2021-04-23 | 株式会社捷太格特 | Electric oil pump apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101455279B1 (en) | Trochoidal-pressure pump for feeding the high-viscosity liquid | |
| CN103850915B (en) | Oil suction pipe connecting structure of oil supply crankshaft and closed reciprocating compressor thereof | |
| JPS6035192A (en) | Variable volume type vane pump | |
| CN208431297U (en) | A kind of gear pump involute splined shaft that can be limited certainly | |
| CN208236629U (en) | Duplex Two-dimensional Liquid press pump | |
| CN209340446U (en) | A kind of same shaft coupling structure of the reduction gearing of press machine | |
| CN208548796U (en) | A kind of high torque screw thread motor shaft | |
| CN201106522Y (en) | Axial transmission collocation axis valve flow-matching cycloid hydraulic motor | |
| CN206860701U (en) | A kind of expansion sleeve type coupling system of integrated combined-type sealing ring | |
| CN201236769Y (en) | Multi-gear hydraulic motor | |
| CN204164299U (en) | Hydraulic control unit | |
| CN106351954B (en) | A kind of mechanical flexible connection structure and the driveline using the flexible connection structure | |
| CN111059169A (en) | Multi-row floating combined type heavy-load overrunning clutch | |
| CN219413444U (en) | Marine driving gear sliding shaft sleeve limiting mechanism | |
| JP2006322518A (en) | Snap ring and its mounting structure as well as torque transmission device | |
| CN105909513B (en) | Energy-saving blade pump | |
| CN215890450U (en) | Hydraulic pump device | |
| CN212774989U (en) | One-way throttle valve | |
| CN203297312U (en) | Hollow shaft of internal splines of high-load torque | |
| CN201184407Y (en) | Wheel type tractor gear box gear axial position limiter | |
| CN2566029Y (en) | Involute taper composite integral key | |
| CN217302057U (en) | Take profile of tooth to prevent changeing sealed coupling and car | |
| CN212318417U (en) | High-pressure overflow valve for main control valve of large excavator | |
| CN207145579U (en) | A kind of impact-resistant secondary speed change driving gear shaft | |
| CN211009804U (en) | Three-gear assembly of automobile transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |