CN207583616U - A kind of machine liquid proportional controls servo oil pump - Google Patents
A kind of machine liquid proportional controls servo oil pump Download PDFInfo
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- CN207583616U CN207583616U CN201721405581.2U CN201721405581U CN207583616U CN 207583616 U CN207583616 U CN 207583616U CN 201721405581 U CN201721405581 U CN 201721405581U CN 207583616 U CN207583616 U CN 207583616U
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- machine liquid
- liquid proportional
- servo valve
- proportional servo
- oil
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Abstract
The utility model discloses a kind of machine liquid proportionals to control servo oil pump, including hydraulic pump ontology, machine liquid proportional servo valve, become gauge rod Displacement Feedback bar, variable oil cylinder, centre bore is provided on the machine liquid proportional servo valve, spring is provided in the centre bore, one end of the spring is fixed on the machine liquid proportional servo valve, the change gauge rod Displacement Feedback bar is directly inserted on the centre bore, is connect with the other end of the spring；The change gauge rod Displacement Feedback bar is connected respectively with variable oil cylinder and hydraulic pump ontology is connected, and regulation handle is provided on the machine liquid proportional servo valve.The machine liquid proportional control servo oil pump that the utility model is previously mentioned improves the precision of adjusting and reduces the difficulty of adjusting.
Description
Technical field
The utility model is related to hydraulic pump field more particularly to a kind of machine liquid proportional control servo oil pumps.
Background technology
Plunger pump is an important device of hydraulic system, it is moved back and forth by plunger in cylinder body, makes seal operation
The volume of cavity volume changes to realize oil suction pressure oil.
Hydraulic control valve is the critical elements on plunger pump, hydraulic efficiency servo-valve by structure be divided into side valve type, nozzle baffle type,
The board-like peace of jet pipe type, jet stream is board-like etc.；It can be divided into hydraulic servovalve, electrohydraulic servo valve and vapour-liquid servo by input signal
Valve.Electrohydraulic servo valve is will to light the electro-hydraulic converting element for being transformed into hydraulic pressure output quantity, is come across 1940, to the fifties, this
The structure of kind element tends to be ripe.With the development of electronic technology and computer technology, the performance of electrohydraulic servo system is shown
Writing improves, and is significantly better than other Hydrauservo Systems, thus is used widely, but the application of electricity is confined to allow electricity
Situation, because many places need technological processing for explosion protection feature, it is impossible to there is the presence of electricity.
In the prior art, mechanical hydraulic servo valve regulation is inconvenient, if manually, needing larger strength that could adjust
Section, it is difficult to adjust to be even more especially when high pressure, and the precision adjusted is not high.
Utility model content
To solve the above problems, the utility model provides a kind of machine liquid proportional control servo oil pump, pass through optimization design machine
Liquid proportional servo valve, reduces the design cost of hydraulic system, and reduces the difficulty of worker's debugging, improves the control of pump
Precision.
A kind of machine liquid proportional controls servo oil pump, including hydraulic pump ontology, machine liquid proportional servo valve, becomes gauge rod Displacement Feedback
Bar, variable oil cylinder are provided with centre bore on the machine liquid proportional servo valve, and spring, the bullet are provided in the centre bore
One end of spring is fixed on the machine liquid proportional servo valve, and the change gauge rod Displacement Feedback bar is directly inserted on the centre bore,
It is connect with the other end of the spring；The change gauge rod Displacement Feedback bar is connected respectively with variable oil cylinder and hydraulic pump ontology phase
Even, hydraulic pump proportional displacement control is realized by the displacement for becoming gauge rod Displacement Feedback bar；In the machine liquid proportional servo valve
On be provided with regulation handle, for adjusting machine liquid proportional servo valve.
Preferably, the machine liquid proportional servo valve is to be fixedly connected with hydraulic pump ontology.
Preferably, the machine liquid proportional servo valve is directly installed on by screw on hydraulic pump ontology.
Preferably, zero adjusting screw is provided on the machine liquid proportional servo valve, which is to adjust
When initial position, power and the initial equilibrium conditions degree of spring force that variable regulation handle applies；When initializaing variable adjusts hand
When the power that handle applies is larger, it can reduce what regulation handle applied by tightening inward zero adjusting screw to reach
Power, vice versa.
Preferably, oil inlet is provided on the machine liquid proportional servo valve, the oil inlet mainly provides control variable
The control oil sources of bar movement.
Preferably, the first oil outlet, first oil outlet and the change are provided on the machine liquid proportional servo valve
The right side of amount oil cylinder is connected, and passes through the first oil outlet from the hydraulic oil part that oil inlet enters by machine liquid proportional servo valve,
The right side of variable oil cylinder is flowed into after the outflow of the first oil outlet, and then controls the discharge capacity of pump.
Preferably, the second oil outlet, second oil outlet and variable oil are provided on the machine liquid proportional control valve
The left side of cylinder is connected, and the hydraulic oil part entered from oil inlet is flowed out from the second oil outlet, then flows into a left side for variable oil cylinder
Side.
Preferably, main valve plug is provided on the machine liquid proportional servo valve, the main valve plug enters machine for controlling
The flow of hydraulic servo.
The machine liquid proportional servo valve that the utility model is previously mentioned, by setting spring in machine liquid proportional servo valve, and will
Become gauge rod Displacement Feedback bar with spring to be connected, by adjusting the handle regulated variable bar Displacement Feedback bar on machine liquid proportional servo valve
Displacement, so as to by becoming the displacement of gauge rod Displacement Feedback bar control the discharge capacity of hydraulic pump, reduce the difficulty of worker's debugging,
And improve the precision of adjusting.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art does simple introduction, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 controls servo oil pump schematic diagram for machine liquid proportional
Fig. 2 is machine liquid proportional servo valve sectional view
Fig. 3 is machine liquid proportional servo valve left view
Fig. 4 controls servo oil pump structure chart for machine liquid proportional
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein
Same or similar label represents same or similar element or the element with same or like function from beginning to end.Lead to below
It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and it is not intended that this practicality
Novel limitation.
Explanation is further explained to the utility model with reference to specific embodiment.
Fig. 1 for machine liquid proportional control servo oil pump schematic diagram, machine liquid proportional control servo oil pump include hydraulic pump ontology 1,
Become gauge rod Displacement Feedback bar 2, machine liquid proportional servo valve 4 and variable oil cylinder 6, which includes two cavity volumes in left and right, left
Side cavity volume 13 and right side cavity volume 14.
Fig. 2 is the sectional view of machine liquid proportional servo valve, and left view is as shown in Figure 3.As shown in Fig. 2, machine liquid proportional servo
Valve 4 includes spool 8, and there are one centre bores 11 for setting on machine liquid proportional servo valve, and spring 12, spring are provided in centre bore
12 one end is fixedly connected with machine liquid proportional servo valve 4, which, which further includes, becomes gauge rod Displacement Feedback bar 2, should
Become gauge rod Displacement Feedback bar to be inserted into the centre bore 11 of machine liquid proportional servo valve 4, and with the other end of spring 12 be connected.In machine
Variable regulation handle 5 is provided on the one of side wall of left and right two side walls of liquid proportional servo valve 4, the variable regulation handle
5 are mainly used for adjusting machine liquid proportional servo valve, and band movable valve plug 8 moves, so as to the compressing force of adjustment spring 12.It is watched in machine liquid proportional
The top for taking valve 4 is provided with oil inlet 3, which mainly provides the control oil sources that control becomes gauge rod movement；In machine liquid proportional
The bottom of servo valve 4 is provided with the first oil outlet 9 and the second oil outlet 10, the right side cavity volume of the first oil outlet 9 and variable oil cylinder 6
14 are connected, and the second oil outlet 10 is connected with the left side cavity volume 13 of variable oil cylinder 6.It is also set on the machine liquid proportional servo valve 4
Be equipped with zero adjusting screw 7, the zero adjusting screw 7 be adjust initial position when, variable regulation handle 5 apply power with
The initial equilibrium conditions degree of the elastic force of spring 12；When initializaing variable regulation handle 5 apply power it is larger when, can pass through by
Zero adjusting screw 7 is tightened inward to reach the power for reducing regulation handle and applying, and vice versa.When hydraulic oil from oil inlet 3 into
After entering, a part of hydraulic oil is flowed out through the second oil outlet 10, in the cavity volume 13 in the left side for then flowing into variable oil cylinder 6；Another portion
Liquid separation pressure oil flows out after spool 8 from the first oil outlet 9, in the cavity volume 14 on the right side for then flowing into variable oil cylinder 6.
As shown in Figure 1, by regulated variable regulation handle 5 to, machine liquid proportional servo valve can be pushed to right side operating position,
High pressure oil is connected on the right side of variable oil cylinder, since the right side area of variable oil cylinder 6 is bigger than left side, is transported to the left so becoming gauge rod
It is dynamic, so the discharge capacity of hydraulic pump ontology 1 is reduced, machine is fed back to by becoming the transmission of gauge rod Displacement Feedback bar 2 with the displacement of variations per hour bar
Spring 12 on liquid proportional servo valve 4, and then the mechanical force that the spring force of spring 12 applies with variable regulation handle 5 compares,
Closed-loop control is formed, so as to fulfill proportional displacement control.When the power that variable regulation handle 5 applies is bigger, make machine liquid proportional
Servo valve 4 pushes the operating position on more right side to, anti-so as to which displacement is passed to change gauge rod displacement so as to become gauge rod more to left movement
Present bar 2 so that the discharge capacity smaller of hydraulic pump 1, conversely, when the mechanical force that variable regulation handle 5 applies is smaller, hydraulic pump
Discharge capacity becomes larger.And so on, so as to fulfill the proportional displacement control to hydraulic pump.
As shown in figure 4, machine liquid proportional servo valve 4 is fixedly connected with hydraulic pump ontology 1, it is preferred that machine in the present embodiment
Liquid proportional servo valve 4 is fixedly connected with hydraulic pump ontology 1 by screw.
Claims (7)
1. a kind of machine liquid proportional controls servo oil pump, including hydraulic pump ontology, machine liquid proportional servo valve, become gauge rod Displacement Feedback
Bar, variable oil cylinder, it is characterised in that：Centre bore is provided on the machine liquid proportional servo valve, is provided in the centre bore
Spring, one end of the spring are fixed on the machine liquid proportional servo valve, and the change gauge rod Displacement Feedback bar is directly inserted in institute
It states on centre bore, is connect with the other end of the spring；It is described change gauge rod Displacement Feedback bar be connected respectively with variable oil cylinder and
Hydraulic pump ontology is connected, and hydraulic pump proportional displacement control is realized by the displacement for becoming gauge rod Displacement Feedback bar；In the machine
Regulation handle is provided on liquid proportional servo valve, for adjusting machine liquid proportional servo valve.
2. servo oil pump as described in claim 1, it is characterised in that：The machine liquid proportional servo valve and hydraulic pump ontology are solid
Fixed connection.
3. servo oil pump as claimed in claim 2, it is characterised in that：The machine liquid proportional servo valve is spiral shell with hydraulic pump ontology
Nail connection.
4. servo oil pump as described in claim 1, it is characterised in that：Zero-bit tune is provided on the machine liquid proportional servo valve
Save screw.
5. servo oil pump as described in claim 1, it is characterised in that：Oil inlet is provided on the machine liquid proportional servo valve
Mouthful.
6. servo oil pump as described in claim 1, it is characterised in that：First is provided on the machine liquid proportional servo valve to go out
Hydraulic fluid port, first oil outlet are connected with the right side of the variable oil cylinder.
7. servo oil pump as described in claim 1, it is characterised in that：Second is provided on the machine liquid proportional servo valve to go out
Hydraulic fluid port, second oil outlet are connected with the left side of the variable oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721405581.2U CN207583616U (en) | 2017-10-26 | 2017-10-26 | A kind of machine liquid proportional controls servo oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721405581.2U CN207583616U (en) | 2017-10-26 | 2017-10-26 | A kind of machine liquid proportional controls servo oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583616U true CN207583616U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721405581.2U Active CN207583616U (en) | 2017-10-26 | 2017-10-26 | A kind of machine liquid proportional controls servo oil pump |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701418A (en) * | 2017-10-26 | 2018-02-16 | 佛山市科达液压机械有限公司 | A kind of machine liquid proportional controls servo oil pump |
-
2017
- 2017-10-26 CN CN201721405581.2U patent/CN207583616U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701418A (en) * | 2017-10-26 | 2018-02-16 | 佛山市科达液压机械有限公司 | A kind of machine liquid proportional controls servo oil pump |
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