CN206785575U - New inclined tray axial plunger pump - Google Patents
New inclined tray axial plunger pump Download PDFInfo
- Publication number
- CN206785575U CN206785575U CN201720379408.3U CN201720379408U CN206785575U CN 206785575 U CN206785575 U CN 206785575U CN 201720379408 U CN201720379408 U CN 201720379408U CN 206785575 U CN206785575 U CN 206785575U
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- China
- Prior art keywords
- plunger
- hole
- pump housing
- pitch
- platen
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- Expired - Fee Related
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Abstract
A kind of new inclined tray axial plunger pump is provided, including the preceding pump housing, the middle pump housing, cylinder body, the pump housing and power transmission shaft afterwards, installation inclined hole is formed with after described in the pump housing and the pitch inside installation inclined hole is rotatablely connected with the rear pump housing, steel ball in the steel ball and spring holder assembly in power transmission shaft other end spline is butted in the middle part of platen after coordinating with platen, it is formed with the cylinder body end face on multiple equally distributed plunger holes and platen and is formed with through hole corresponding with plunger hole hole position, plunger assembly one end is inserted in plunger hole after passing through through hole and is slidably matched with plunger hole, the plunger assembly other end is butted on after coordinating with the through hole on platen to be tilted in side surface.Traditional fixed pitch is changed to rotary pitch by the utility model, pitch is set to follow plunger rotation, reduce the frictional force of pitch and plunger, improve mechanical efficiency, meet the belief system requirement of hydraulic pump, plunger and piston shoes are designed as plunger assembly simultaneously, reduce the assembly difficulty of each several part.
Description
Technical field
The utility model belongs to railway switch machine hydraulic system pump technical field, and in particular to a kind of new inclined tray
Axial plunger pump.
Background technology
With developing rapidly for railway technology, the separation for track turnout is changed into controlling automatically from original manual control
System, this just requires that Hydraulic Switch Machine system will not only have very high reliability requirement when automatically controlling, and is breaking down
When, system can manual switching at the low rotational speed, and the reliability of original hydraulic pump can not meet system requirements.Utility model is special
Sharp application number 201120206690.8 discloses a kind of " plunger pump " (calling file 1 in the following text), and the swash plate of hemisphere face structure is consolidated in file 1
Dingan County is loaded on rear pump body, and when main shaft drive plunger does flexible move back and forth in the cylinder holes of cylinder body, plunger is cunning with swash plate
Dynamic friction, frictional resistance is big, meanwhile, the installation form of plunger is clad type structure, and installation difficulty is larger；Utility model patent Shen
Numbers 201220064342.6 a kind of " novel axial plunger pump " (calling file 2 in the following text) please be disclosed, swash plate is fixedly installed in file 2
Afterwards in cover cavity, plunger end face is butted on the disc end face being connected with swash plate all the time, and main shaft makes post after driving plunger rotation
When plug does flexible reciprocating motion in plunger hole, under plunger spring effect, plunger end face is butted on disc end face all the time, plunger
With disc it is sliding friction in rotation process, meanwhile, the plunger spring being connected in plunger hole and with plunger is consumable accessory,
Replacing difficulty is big, and the fault rate of plunger pump is big, in summary, it is necessary to is improved.
Utility model content
The technical problem that the utility model solves：A kind of new inclined tray axial plunger pump is provided, by traditional fixation
Formula pitch is changed to rotary pitch, pitch is followed plunger rotation, substantially reduces the frictional force of pitch and plunger,
Mechanical efficiency is improved, meets the belief system requirement of hydraulic pump, while plunger and piston shoes are designed as plunger assembly, structure
Simply, the assembly difficulty of each several part is greatly reduced.
The technical solution adopted in the utility model：New inclined tray axial plunger pump, including the preceding pump housing, the middle pump housing,
Cylinder body, the rear pump housing and power transmission shaft, the preceding pump housing are installed on power transmission shaft one end by bearing, and it is another that the cylinder body is set in power transmission shaft
One end is simultaneously connected with the spline fitted of the power transmission shaft other end, and steel loop is interference fitted with cylinder body excircle, and the middle pump housing passes through
Needle bearing I and steel loop excircle are connected, the described middle pump housing one end and preceding pump housing is fixedly connected and the middle pump housing is another
Hold and be fixedly connected with the rear pump housing positioned at the power transmission shaft other end, installation inclined hole is formed with the rear pump housing and in installation inclined hole
The pitch in portion is rotatablely connected with the rear pump housing, platen is provided between the pitch and cylinder body, located at power transmission shaft other end spline
Steel ball in interior steel ball and spring holder assembly is butted in the middle part of platen after coordinating with platen, is formed with the cylinder body end face multiple uniform
Through hole corresponding with plunger hole hole position is formed with the plunger hole and platen of distribution, plunger is inserted in plunger assembly one end after passing through through hole
It is slidably matched in hole and with plunger hole, the plunger assembly other end is butted on after coordinating with the through hole on platen to be tilted in side surface
And by making pitch follow plunger rotation after power transmission shaft drive plunger rotation.
Wherein, the installation inclined hole is shoulder hole and installs inclined hole built with needle bearing II and ball bearing, described to incline
Swash plate after needle bearing II and ball bearing interference fit with being installed on the rear pump housing.
Further, the plunger assembly includes plunger and piston shoes, and installation rank hole, the installation are formed with inside the piston shoes
Rank hole right-hand member is provided with locking nut and one end is formed with after being screwed in externally threaded plunger insertion installation rank hole with locking nut cooperation
Plunger is fixedly installed on piston shoes, the plunger other end end is butted on pitch and located at the limited cap of the plunger other end
In lower end insertion through hole, the piston shoes are interior through through hole insertion plunger hole and are slidably matched with plunger hole.
Further, it is formed with V-shaped groove in the middle part of the platen right side and V-shaped groove bottom surface is formed with the hemisphere being adapted with steel ball
Groove, the steel ball are pushed against pitch by steel ball and spring holder assembly promotion platen drive plunger assembly after coordinating with half ball groove.
The utility model compared with prior art the advantages of：
1st, pitch is made after being connected by the ball bearing II in installation inclined hole and ball bearing and pitch
It is rotatablely connected with the rear pump housing, traditional fixed pitch is changed to rotary pitch, pitch is followed plunger rotation, makes
Traditional sliding friction is changed into rolling friction, substantially reduces the frictional force of pitch and plunger, improves mechanical efficiency, meets
The belief system requirement of hydraulic pump；
2nd, plunger and piston shoes are designed as plunger assembly, plunger is fixedly connected with piston shoes by locking nut, structure letter
It is single, convenience quick for installation, the assembly difficulty of each several part is greatly reduced, meets manufacturability requirement；
3rd, this structure is applied to goat system, improves the reliability of hydraulic pump, can complete import substitutes,
Strong technical guarantee is provided for the development of China railways system.
Brief description of the drawings
Fig. 1 is the utility model internal structure schematic diagram；
Fig. 2 is the mounting structure schematic diagram of the pump housing and pitch after the utility model；
Fig. 3 is the utility model plunger assembly structural representation.
Embodiment
1-3 describes a kind of embodiment of the present utility model below in conjunction with the accompanying drawings.
New inclined tray axial plunger pump, including the preceding pump housing 9, the middle pump housing 17, cylinder body 12, the rear pump housing 18 and power transmission shaft
2, the preceding pump housing 9 is installed on the one end of power transmission shaft 2 by bearing, the cylinder body 12 be set in the other end of power transmission shaft 2 and with transmission
The spline fitted connection of the other end of axle 2, steel loop 13 are interference fitted with the excircle of cylinder body 12, and the middle pump housing 17 passes through needle roller axle
Hold I 14 to be connected with the excircle of steel loop 13, described middle one end of the pump housing 17 and preceding pump housing 9 is fixedly connected and the middle pump housing 17 is another
One end is fixedly connected with the rear pump housing 18 positioned at the other end of power transmission shaft 2, and installation inclined hole 1 is formed with and located at peace in the rear pump housing 18
Pitch 20 inside dress inclined hole 1 is rotatablely connected with the rear pump housing 18, and platen 15 is provided between the pitch 20 and cylinder body 12, if
Steel ball 16 in the steel ball and spring holder assembly in the other end spline of power transmission shaft 2 is butted on the middle part of platen 15 after coordinating with platen 15,
It is formed with the end face of cylinder body 12 on multiple equally distributed plunger holes 3 and platen 15 and is formed with lead to corresponding with the hole position of plunger hole 3
Hole 4, the one end of plunger assembly 11 are inserted in plunger hole 3 after passing through through hole 4 and are slidably matched with plunger hole 3, the plunger assembly 11
The other end is butted on the end face of pitch 20 after coordinating with the through hole 4 on platen 15 and drives plunger 6 to make after rotating by power transmission shaft 2
Pitch 20 follows plunger 6 to rotate；Specifically, the installation inclined hole 1 is shoulder hole and installs inclined hole 1 built with needle bearing II
19 and ball bearing 21, the pitch 20 is installed on the rear pump housing 18 after being interference fitted with needle bearing II 19 and ball bearing 21
On；Specifically, the plunger assembly 11 includes plunger 6 and piston shoes 7, installation rank hole 8, the installation are formed with inside the piston shoes 7
The right-hand member of rank hole 8 is provided with locking nut 22 and one end is formed with the externally threaded insertion of plunger 6 installation rank hole 8 and coordinated with locking nut 22
Plunger 6 is fixedly installed on piston shoes 7 after screwing, the other end end of plunger 6 be butted on pitch 20 and located at plunger 6 it is another
In the lower end of the limited cap 10 insertion through hole 4 of one end, the piston shoes 7 are inserted in plunger hole 3 through through hole 4 and slided with plunger hole 3
Coordinate；Specifically, the right side of platen 15 middle part is formed with V-shaped groove and V-shaped groove bottom surface is formed with the hemisphere being adapted with steel ball 16
Groove 5, platen 15 is promoted to drive plunger assembly 11 by pitch by steel ball and spring holder assembly after the ball groove 5 of steel ball 16 and half cooperation
20 push against.
In this structure, in the presence of steel ball and spring holder assembly, steel ball 16 pushes against on the end face of platen 15 all the time, and by
Platen 15 drives plunger assembly 11 end of plunger 6 in plunger assembly 11 is pushed against on the end face of pitch 20, during work, transmission
Axle 2 drives steel ball and spring holder assembly, cylinder body 12, plunger assembly 11 and the synchronous axial system of platen 15 after rotating, in the effect of plunger 6
Under, pitch 20 follows plunger 6 to rotate, and now, plunger 6 and pitch 20 are pivoting friction, and frictional force substantially reduces, such as Fig. 1
It is shown, in the presence of pitch 20, turn to the sealed volume maximum that the plunger 6 of the top of power transmission shaft 2 is formed with cylinder body 12, liquid
Force feed is pressed into the presence of air through oil inlet, and the sealing that plunger 6 and the cylinder body 12 positioned at the lower section of power transmission shaft 2 are formed is held
Chamber is minimum, and hydraulic oil is forced out in the presence of air through oil-out.This structure passes through the ball axle in installation inclined hole 1
Hold II 19 and ball bearing 21 and pitch 20 be connected after pitch 20 is rotatablely connected with the rear pump housing 18, traditional is consolidated
Fixed pattern pitch 20 is changed to rotary pitch 20, makes pitch 20 follow plunger 6 to rotate, and makes traditional sliding friction be changed into rolling
Dynamic friction, the frictional force of pitch 20 and plunger 6 is substantially reduced, improves mechanical efficiency, meet the reliability system of hydraulic pump
System is required, plunger 6 and piston shoes 7 are designed as into plunger assembly, plunger 6 is fixedly connected with piston shoes 7 by locking nut 22, structure
Simply, convenience quick for installation, the assembly difficulty of each several part is greatly reduced, meets manufacturability requirement, this structure is applied to railway
Goat system, improve the reliability of hydraulic pump, can complete import substitutes, the development for China railways system provides
Strong technical guarantee.
Above-described embodiment, simply preferred embodiment of the present utility model, not it is used for limiting the utility model practical range,
Therefore all equivalence changes done with content described in the utility model claims, the utility model claims model all should be included in
Within enclosing.
Claims (4)
1. new inclined tray axial plunger pump, including the preceding pump housing (9), the middle pump housing (17), cylinder body (12), the rear pump housing (18) and
Power transmission shaft (2), the preceding pump housing (9) are installed on power transmission shaft (2) one end by bearing, and the cylinder body (12) is set in power transmission shaft
(2) other end and it is connected with the spline fitted of power transmission shaft (2) other end, steel loop (13) is interference fitted with cylinder body (12) excircle,
The middle pump housing (17) is connected by needle bearing I (14) and steel loop (13) excircle, the middle pump housing (17) one
End is fixedly connected with the preceding pump housing (9) and the middle pump housing (17) other end and the rear pump housing (18) positioned at power transmission shaft (2) other end are solid
Fixed connection, it is characterised in that：Installation inclined hole (1) is formed with after described in the pump housing (18) and located at the internal inclination of installation inclined hole (1)
Disk (20) is rotatablely connected with the rear pump housing (18), platen (15) is provided between the pitch (20) and cylinder body (12), located at transmission
The steel ball (16) in steel ball and spring holder assembly in axle (2) other end spline is butted in platen (15) after coordinating with platen (15)
Portion, it is formed with multiple equally distributed plunger holes (3) and platen (15) on cylinder body (12) end face and is formed with and plunger hole (3) hole
Through hole (4) corresponding to position, plunger assembly (11) one end are inserted in plunger hole (3) and slided with plunger hole (3) afterwards through through hole (4)
Coordinate, plunger assembly (11) other end is butted on pitch (20) end face simultaneously after coordinating with the through hole (4) on platen (15)
Plunger (6) is driven to make pitch (20) follow plunger (6) to rotate after rotating by power transmission shaft (2).
2. new inclined tray axial plunger pump according to claim 1, it is characterised in that：It is described installation inclined hole (1) be
Shoulder hole and installation inclined hole (1) is built with needle bearing II (19) and ball bearing (21), the pitch (20) and needle roller axle
It is installed on after holding II (19) and ball bearing (21) interference fit on the rear pump housing (18).
3. new inclined tray axial plunger pump according to claim 1, it is characterised in that：Plunger assembly (11) bag
Plunger (6) and piston shoes (7) are included, installation rank hole (8) is formed with inside the piston shoes (7), described installation rank hole (8) right-hand member is provided with locking
Nut (22) and one end be formed with externally threaded plunger (6) insertion installation rank hole (8) in locking nut (22) coordinate screw after will
Plunger (6) is fixedly installed on piston shoes (7), and plunger (6) other end end is butted on pitch (20) and is located at plunger (6)
In limited cap (10) lower end insertion through hole (4) of the other end, the piston shoes (7) through in through hole (4) insertion plunger hole (3) and with
Plunger hole (3) is slidably matched.
4. new inclined tray axial plunger pump according to claim 1, it is characterised in that：Platen (15) right side
Middle part is formed with V-shaped groove and V-shaped groove bottom surface is formed with half ball groove (5) being adapted with steel ball (16), the steel ball (16) and half ball groove
(5) platen (15) is promoted to drive plunger assembly (11) to push against pitch (20) by steel ball and spring holder assembly after coordinating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379408.3U CN206785575U (en) | 2017-04-12 | 2017-04-12 | New inclined tray axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720379408.3U CN206785575U (en) | 2017-04-12 | 2017-04-12 | New inclined tray axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206785575U true CN206785575U (en) | 2017-12-22 |
Family
ID=60707472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720379408.3U Expired - Fee Related CN206785575U (en) | 2017-04-12 | 2017-04-12 | New inclined tray axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206785575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884767A (en) * | 2017-04-12 | 2017-06-23 | 宝鸡和新机电设备有限公司 | New inclined tray axial plunger pump |
| CN112888858A (en) * | 2018-11-15 | 2021-06-01 | 株式会社小松制作所 | Piston and hydraulic pump/motor |
-
2017
- 2017-04-12 CN CN201720379408.3U patent/CN206785575U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884767A (en) * | 2017-04-12 | 2017-06-23 | 宝鸡和新机电设备有限公司 | New inclined tray axial plunger pump |
| CN106884767B (en) * | 2017-04-12 | 2019-08-09 | 宝鸡和新机电设备有限公司 | Novel inclined tray axial plunger pump |
| CN112888858A (en) * | 2018-11-15 | 2021-06-01 | 株式会社小松制作所 | Piston and hydraulic pump/motor |
| CN112888858B (en) * | 2018-11-15 | 2024-01-16 | 株式会社小松制作所 | Piston and hydraulic pump/motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171222 Termination date: 20200412 |