CN207377740U - Oblique tray type axial plunger piston variable pump - Google Patents
Oblique tray type axial plunger piston variable pump Download PDFInfo
- Publication number
- CN207377740U CN207377740U CN201721425099.5U CN201721425099U CN207377740U CN 207377740 U CN207377740 U CN 207377740U CN 201721425099 U CN201721425099 U CN 201721425099U CN 207377740 U CN207377740 U CN 207377740U
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- China
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- swash plate
- control valve
- guide groove
- cylinder body
- variable
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Abstract
The utility model is related to a kind of oblique tray type axial plunger piston variable pumps, belong to engineering machinery hydraulic transmission system field, including the pump housing, control valve, cylinder body, shaft and swash plate, swash plate and cylinder body are sleeved in shaft, and cylinder body is equipped with the big variable piston rod that control swash plate is swung, control valve is fixed on pump housing one side, swash plate is provided with ladder platform away from big variable piston rod one side, swash plate positioning plate is fixed in ladder platform, with being provided with guide groove on the corresponding inner wall of swash plate positioning plate, the swash plate positioning plate other end is extend into guide groove the pump housing.The utility model is by using the swash plate positioning plate with guiding role, so that swash plate moves back and forth in fixed guide groove, both the ride comfort of variable had been improved, the frictional force of sliding process is reduced again, reduces frictional heat, reduces energy consumption, and then reduce the operating power of cooling system, energy consumption can be significantly reduced, the service life and reliability of plunger pump is improved, reduces use cost.
Description
Technical field
The utility model belongs to engineering machinery hydraulic transmission system field, and in particular to a kind of cam-type axial piston variable
Pump.
Background technology
Traditional plunger pump is not provided with guider, is only slided by the inner wall of housing as supporting guide swash plate along it
It is dynamic, since no slideway is guided so that swash plate easily reverses and then generates larger frictional force between inner wall during exercise, both
The ride comfort and continuity of swash plate variable are influenced, and more heats can be generated, improves energy consumption.
Utility model content
The purpose of this utility model is to provide a kind of oblique tray type axial plunger piston variable pump, solves swash plate and easily turns round during exercise
It rotates into and larger frictional force is generated between inner wall, that is, influence the ride comfort and continuity of swash plate variable, and can generate more
Heat, the problem of the energy consumption of raising.
The utility model oblique tray type axial plunger piston variable pump, including the pump housing, control valve, cylinder body, shaft and swash plate, shaft is passed through
Pump body is worn, swash plate and cylinder body are sleeved in shaft, and cylinder body is equipped with the big variable piston rod that control swash plate is swung, control valve
Pump housing one side is fixed on, swash plate is provided with ladder platform away from big variable piston rod one side, swash plate positioning is fixed in ladder platform
Plate, with being provided with guide groove on the corresponding inner wall of swash plate positioning plate, the swash plate positioning plate other end is extend into guide groove the pump housing.
Constant power control valve and constant-pressure control valve are integrated in the control valve.Combine constant-power speed regulation, pressure cut off
Function, the Control function for making plunger pump is more diversified, realize hydraulic system operation overall process it is energy saving, reduce entire hydraulic pressure
The use cost of system.
The swash plate positioning plate is crescent, and guide groove is arc-shaped.
The utility model compared with prior art, has the advantages that：
The pump is by using the swash plate positioning plate with guiding role so that swash plate carries out back and forth in fixed guide groove
Movement, had not only improved the ride comfort of variable, but also reduced the frictional force of sliding process, reduces frictional heat, reduces energy consumption,
And then the operating power of cooling system is reduced, energy consumption can be significantly reduced, improves the service life of plunger pump and reliable
Property, reduce use cost.In addition, the control valve integrated comprehensive of the pump constant-power speed regulation, the function of pressure cut off, make plunger
The Control function of pump is more diversified, realizes the energy saving of hydraulic system operation overall process.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is H-H sectional views in Fig. 1；
Fig. 3 is A-A sectional views in Fig. 1；
Fig. 4 is B-B sectional views in Fig. 1；
In figure, 1, swash plate, 2, swash plate positioning plate, 3, cylinder body, 4, shaft, 5, variable piston, 6, ram piston, 7, L-type shakes
Arm, 8, adjustment spring, 9, constant power control valve, 10, constant-pressure control valve, 11, guide groove.
Specific embodiment
The utility model is further described with reference to embodiment.
Oblique tray type axial plunger piston variable pump as Figure 1-Figure 4, including the pump housing, control valve, cylinder body 3, shaft 4, control
Valve and swash plate 1, shaft 4 run through pump body, and swash plate 1 and cylinder body 3 are sleeved in shaft 4, and the external left end cap of cylinder body 3 has sliding axle
It holds, sliding bearing is mounted on pump housing inner wall, and cylinder body 3 is equipped with the big variable piston rod that control swash plate 1 is swung, and control valve is solid
Pump housing one side is scheduled on, swash plate 1 is provided with ladder platform away from big variable piston rod one side, swash plate positioning plate is fixed in ladder platform
2, for the pump housing with being provided with guide groove 11 on 2 corresponding inner wall of swash plate positioning plate, 2 other end of swash plate positioning plate extend into guide groove
In 11.
Constant power control valve 9 and constant-pressure control valve 10 are integrated in the control valve.Constant power control valve 9 is coaxially set
There is adjustment spring 8, offer the accommodation space for accommodating L-type rocking arm 7 in control valve, the middle part of L-type rocking arm 7 is fixed on using axis pin
On control valve, one end of L-type rocking arm 7 is placed between constant power control valve 9 and adjustment spring 8, and swash plate 1 is connected with variable piston
5, the middle part of variable piston 5 is vertically fixed ram piston 6, and 5 other end of variable piston is provided with resetting spring, ram piston 6
The other end reach in the accommodation space of control valve and with 7 another end in contact of L-type rocking arm.The pipe for connecting each valve is provided on control valve
Road.
The swash plate positioning plate 2 is crescent, and guide groove 11 is arc-shaped.
Constant power control valve 9, it is a kind of to ensure the control mode that works under the limitation of invariable power of plunger pump, root
According to principle of moment balance, operating pressure applies thrust control piston on ram piston 6 and promotes L-type rocking arm 7, and outside is equipped with adjustable
The adjustment spring 8 of section acts on 7 opposite side of L-type rocking arm and determines set value of the power, makes plunger pump work under conditions of invariablenes turning speed
Make, the same ratio that operating pressure is reduced with output flow raises, final to realize driving power Pb*Vg=constant, make plunger pump with
The output power of engine matches；Constant-pressure control valve 10, it is a kind of pressure control, when load reaches preset pressure
During value, constant-pressure control valve 10 is acted is connected to big variable plunger shaft by high voltage control oil, and variable piston 5 moves to right, and swash plate 1 is promoted to put
It moves to close to zero delivery.
In conclusion the utility model is by using the swash plate positioning plate with guiding role so that swash plate is fixed
It moves back and forth in guide groove, has not only improved the ride comfort of variable, but also reduce the frictional force of sliding process, reduce friction
Heat reduces energy consumption, and then reduces the operating power of cooling system, can significantly reduce energy consumption, improve plunger pump
Service life and reliability, reduce use cost.In addition, the control valve integrated comprehensive of the pump constant-power speed regulation, pressure
The function of cut-out, the Control function for making plunger pump is more diversified, realizes the energy saving of hydraulic system operation overall process.
Claims (3)
1. a kind of oblique tray type axial plunger piston variable pump, including the pump housing, control valve, cylinder body (3), shaft (4), control valve and swash plate
(1), shaft (4) runs through pump body, and swash plate (1) and cylinder body (3) are sleeved in shaft (4), and cylinder body (3) is equipped with control swash plate
(1) the big variable piston rod swung, control valve are fixed on pump housing one side, it is characterised in that:The separate big variable piston of swash plate (1)
Bar one side is provided with ladder platform, and swash plate positioning plate (2) is fixed in ladder platform, and the pump housing is corresponding interior with swash plate positioning plate (2)
Guide groove (11) is provided on wall, swash plate positioning plate (2) other end is extend into guide groove (11).
2. oblique tray type axial plunger piston variable pump according to claim 1, it is characterised in that：It is integrated in the control valve persevering
Power control valve (9) and constant-pressure control valve (10).
3. oblique tray type axial plunger piston variable pump according to claim 1, it is characterised in that：The swash plate positioning plate (2) is
Crescent, guide groove (11) are arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425099.5U CN207377740U (en) | 2017-10-31 | 2017-10-31 | Oblique tray type axial plunger piston variable pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721425099.5U CN207377740U (en) | 2017-10-31 | 2017-10-31 | Oblique tray type axial plunger piston variable pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207377740U true CN207377740U (en) | 2018-05-18 |
Family
ID=62337656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721425099.5U Active CN207377740U (en) | 2017-10-31 | 2017-10-31 | Oblique tray type axial plunger piston variable pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207377740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737025A (en) * | 2019-02-25 | 2019-05-10 | 金职液压动力(金华)有限公司 | A kind of plunger pump variable swash plate seat of friction and rolling compound action |
-
2017
- 2017-10-31 CN CN201721425099.5U patent/CN207377740U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109737025A (en) * | 2019-02-25 | 2019-05-10 | 金职液压动力(金华)有限公司 | A kind of plunger pump variable swash plate seat of friction and rolling compound action |
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