CN206175147U - Closed variable piston pump - Google Patents
Closed variable piston pump Download PDFInfo
- Publication number
- CN206175147U CN206175147U CN201621153769.8U CN201621153769U CN206175147U CN 206175147 U CN206175147 U CN 206175147U CN 201621153769 U CN201621153769 U CN 201621153769U CN 206175147 U CN206175147 U CN 206175147U
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- valve
- plunger
- pump
- housing
- cylinder body
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Abstract
The utility model discloses a closed variable piston pump, including main pump subassembly and benefit fuel pump assembly, the main pump subassembly includes shells assembly, cylinder body subassembly and valve body component, shells assembly, the cylinder body subassembly, valve body component and benefit fuel pump assembly link to each other through first bolt and second bolt, shells assembly includes the casing, the slider, the handle, the main shaft, slide bearing, sloping cam plate and thrust bearing, the cylinder body subassembly includes the plunger, the plunger gasket, plunger spring and cylinder body, valve body component includes the valve body, an unidirectional valve, the bypass valve, valve plate and bearing, mend fuel pump assembly including mending oil pump shell, interior external rotor, overflow case and overflow valve spring. The device's function mainly realizes by valve body component, and the resistance loss that the work oil that makes the main pump subassembly produced at work is littleer, and this kind of structure and the design that has now both at home and abroad have very big differently, not only can satisfy the user demand when the front pump, still provide extensions's possibility, excellent in use effect.
Description
Technical field
This utility model is related to a kind of pump, specifically a kind of close circuit variable pump.
Background technology
Into after 21 century, the development of domestic Landscape Greening Machines equipment further speeds up, it will realize that gardens are green quickly
It is turned into the all-round mechanization of industry, its middle-size and small-size manipulation sitting type lawn machine of taking starts progressively to replace walking to manipulate self-propelled lawn
Trimmer, can particularly realize zero radius of turn, and mobility is good, can a tractor serves several purposes all-hydraulic lawn machine, obtain vast use
The common welcome at family.One of core parts of lawn mower that this no-radius are turned to are the variable posts of underloading closed circuit
Plug pump, because this Variable plunger pump can realize the step-less adjustment of flow, compact conformation, the flexible layout of system, therefore obtains
To being widely applied, plunger displacement pump is moved back and forth by plunger in cylinder body, and the volume for making seal operation cavity volume changes
Oil suction, force feed are realized, plunger displacement pump has the advantages that rated pressure height, compact conformation, efficiency high and Flow-rate adjustment are convenient, existing
Plunger displacement pump is all to realize that although this structure meets the use demand of people, but working oil in work by the valve component of pump
The drag losses produced in work is big, and is unfavorable for the extension of plunger pumping function.
The content of the invention
The purpose of this utility model is to provide a kind of close circuit variable pump, to solve above-mentioned background technology in propose
Problem.
For achieving the above object, this utility model provides following technical scheme：
A kind of close circuit variable pump, including main pump component and repairing pump group part, the main pump component include housing unit,
Housing assembly and valve component, housing unit, housing assembly, valve component and repairing pump group part are by the first bolt and the second spiral shell
Bolt is connected, and housing unit includes housing, slide block, handle, main shaft, sliding bearing, swash plate and thrust bearing, the quantity of sliding bearing
For two, handle is installed in the housing and handle upper end is provided with from top to bottom handle spacing collar and handle component, slide block peace
It is mounted on handle and two sides of slide block is slidably mounted in the groove of swash plate, swash plate is slidably mounted on two sliding bearings
On, sliding bearing install in the housing, thrust bearing be arranged on swash plate outside and thrust bearing on be provided with fixture and
First sealing ring, main shaft is provided with two main shaft spacing collars through the side of housing and main shaft, between two main shaft spacing collars
Be provided with spindle assemblies, housing assembly is arranged on the spindle assemblies of housing unit, housing assembly include plunger, piston spacer,
Plunger spring is cased with outside plunger spring and cylinder body, the front end of plunger and thrust bearing contacts and plunger, plunger is arranged on cylinder
The plunger slot of body is interior and piston spacer is provided between plunger and cylinder body, is connected by spline between cylinder body and main shaft, valve body
Component is carried out centering and coordinates and be connected by the first bolt and housing unit by seam and housing, and valve component includes
Valve body, check valve, bypass valve, valve plate and bearing, the end face of valve plate is contacted with the rear end face of cylinder body, and valve plate is arranged on valve
The front of body and the middle setting of valve plate have a through hole, bearing through valve plate through hole and installed in the front of valve body,
Bearing is contacted with spindle assemblies, and check valve is arranged on the side of valve body, and bypass valve is arranged on the opposite side of valve body and adopts spiral shell
Mother is fixed, and repairing pump group part is arranged on the back side of valve body by the second bolt, repairing pump group part include repairing pump case, inside and outside turn
Son, overflow valve element and overflow valve spring, inner and outer rotors are arranged on the front of repairing pump case and are sealed using the second sealing ring,
Overflow valve element is arranged in repairing pump case and overflow valve element outer cover has overflow valve spring.
As further program of the utility model：Repairing pump group part also includes overflow valve gap, and overflow valve gap is arranged on to be mended
The bottom of oil pump case top and overflow valve gap contacts with overflow valve spring.
As further program of the utility model：Valve plate is fixed by screws on valve body, the quantity of the second bolt
For two, the quantity of inner and outer rotors, main shaft and swash plate is one.
As further program of the utility model：First sealing ring, the second sealing ring and piston spacer adopt rubber
Or silica gel material makes, sliding bearing, housing, swash plate, cylinder body, valve plate, repairing pump case and inner and outer rotors adopt Gao Meng
Steel material makes.
Compared with prior art, the beneficial effects of the utility model are：The device is reasonable in design, optimizes structure, failure
Rate is low, safety in utilization and good operation stability；The function of the device mainly by valve component realization, makes the work of main pump component
The drag losses that oil is produced at work is less, and this structure is very different with existing design both at home and abroad, not only can
Meet the use demand when front pump, additionally provide the possibility of Function Extension, using effect is good.
Description of the drawings
Fig. 1 is the explosive view of close circuit variable pump.
Fig. 2 is the explosive view of housing unit in close circuit variable pump.
Fig. 3 is the explosive view of housing assembly in close circuit variable pump.
Fig. 4 is the explosive view of valve component in close circuit variable pump.
Fig. 5 is the explosive view of repairing pump group part in close circuit variable pump.
Fig. 6 is the profile of main pump component in close circuit variable pump.
Fig. 7 is the fundamental diagram of close circuit variable pump.
Fig. 8 is close circuit variable pump with flow graph.
Wherein：A- housing units, B- housing assemblies, C- valve components, D- repairing pump group parts, the bolts of 1- first, 2- second
Bolt, 3- housings, 4- slide blocks, 5- handles, 6- handle components, 7- handle spacing collars, 8- main shafts, 9- main shaft spacing collars, 10- main shafts
Component, 11- sliding bearings, 12- swash plates, 13- thrust bearings, 14- fixtures, the sealing rings of 15- first, 17- plungers, 18- plungers
Pad, 19- plunger springs, 20- cylinder bodies, 21- valve bodies, 22- check valves, 23- bypass valves, 24- nuts, 25- valve plates, 26- spiral shells
Nail, 27- bearings, 28- repairing pump cases, 29- inner and outer rotors, the sealing rings of 30- second, 31- overflow valve elements, 32- overflow valve springs,
33- overflow valve gaps, 34- the first valve body kidney slots, 35- the second valve body kidney slots, the hydraulic fluid ports of 36- first, the hydraulic fluid ports of 37- second, 38- is high
Nip, 39- low-pressure areas, 40- flows area.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Refer to Fig. 1-8, a kind of close circuit variable pump, a kind of close circuit variable pump, including main pump component and repairing
Pump group part D, the main pump component includes housing unit A, housing assembly B and valve component C, housing unit A, housing assembly B, valve
Body component C is connected by the first bolt 1 with repairing pump group part D with the second bolt 2, and housing unit A includes housing 3, slide block 4, handss
Handle 5, main shaft 8, sliding bearing 11, swash plate 12 and thrust bearing 13, the quantity of sliding bearing 11 is two, and handle 5 is arranged on shell
In the body 3 and upper end of handle 5 is provided with from top to bottom handle spacing collar 7 and handle component 6, slide block 4 be arranged on handle 5 and
Two sides of slide block 4 are slidably mounted in the groove of swash plate 12, and swash plate 12 is slidably mounted on two sliding bearings 11, sliding axle
Hold 11 to be arranged in housing 3, thrust bearing 13 is arranged on the outside of swash plate 12 and thrust bearing 13 and is provided with fixture 14
With the first sealing ring 15, main shaft 8 is provided with two main shaft spacing collars 9, two main shafts limits through the side of housing 3 and main shaft 8
Spindle assemblies 10 are provided between position circle 9, housing assembly B is arranged on the spindle assemblies 10 of housing unit A, housing assembly B bags
Plunger 17, piston spacer 18, plunger spring 19 and cylinder body 20 are included, the front end of plunger 17 contacts and plunger 17 with thrust bearing 13
Outside is cased with plunger spring 19, and plunger 17 is arranged in the plunger slot of cylinder body 20 and is provided with post between plunger 17 and cylinder body 20
Choker block piece 18, is connected between cylinder body 20 and main shaft 8 by spline, and valve component C carries out centering and match somebody with somebody to merge by seam and housing 3
And be connected with housing unit A by the first bolt 1, valve component C includes valve body 21, check valve 22, bypass valve 23, flow
Disk 25 and bearing 27, the end face of valve plate 25 is contacted with the rear end face of cylinder body 20, and valve plate 25 is arranged on the front of valve body 21 simultaneously
And the middle setting of valve plate 25 has through hole, bearing 27 passes through the through hole of valve plate 25 and installed in the front of valve body 21, axle
Hold 27 to contact with spindle assemblies 10, check valve 22 is arranged on the side of valve body 21, bypass valve 23 is arranged on the opposite side of valve body 21
And fixed using nut 24, repairing pump group part D is arranged on the back side of valve body 21 by the second bolt 2, repairing pump group part D includes
Repairing pump case 28, inner and outer rotors 29, overflow valve element 31 and overflow valve spring 32, inner and outer rotors 29 are arranged on repairing pump case 28
Front and sealed using the second sealing ring 30, overflow valve element 31 be arranged on repairing pump case 28 in and overflow valve element 31 outside
Portion is cased with overflow valve spring 32.Repairing pump group part D also includes overflow valve gap 33, and overflow valve gap 33 is pushed up installed in repairing pump case 28
The bottom of end and overflow valve gap 33 contacts with overflow valve spring 32.Valve plate 25 is fixed on valve body 21 by screw 26, the
The quantity of two bolts 2 is two, and the quantity of inner and outer rotors 29, main shaft 8 and swash plate 12 is one.First sealing ring 15, second
Sealing ring 30 and piston spacer 18 are made using rubber or silica gel material, sliding bearing 11, housing 3, swash plate 12, cylinder body 20,
Valve plate 25, repairing pump case 28 and inner and outer rotors 29 are made using high manganese steel material.
Operation principle of the present utility model is：When handle 5 is rotated under external force, swash plate can be promoted by slide block 4
12 slide on two surfaces 11 of sliding bearing 11, and at swash plate 12 during a certain angle, main shaft 8 turns clockwise under external force
（In the face of shaft end）, due to adopting spline connection, cylinder body 20 to turn clockwise together with main shaft 8 between cylinder body 20 and main shaft 8, and
The plunger 17 of assembling also does clockwise rotation together with cylinder body 20 along main shaft 8 in housing assembly B, meanwhile, plunger 17 is in post
Under the collective effect of plug spring 19 and swash plate 12, plunger 17 moves reciprocatingly along axis.Valve plate 25 will rotate, cylinder body
The Cheng Kaisi region of multiple kidney slots at 20 back sides, i.e. higher-pressure region 38, low-pressure area 39 and Liang Ge flows area 40, in higher-pressure region 38,
The volume of the cavity volume that plunger 17 is formed with cylinder body 20 is tapered into the rotation of cylinder body 20, and the second valve body kidney slot 35 is located at
Higher-pressure region 38, and the volume of the cavity volume formed with cylinder body 20 in low-pressure area 39, plunger 17 gradually becomes with the rotation of cylinder body 20
Greatly, the first valve body kidney slot 34 is located at low-pressure area 39, and the flow area 40 between higher-pressure region 38 and low-pressure area 39 is then low-pressure area 39
With the transitive state between higher-pressure region 38, row buffering is entered with the conversion of high-tension room to low pressure, reach the mesh for eliminating vibration and noise
, this process is referred to as the flow of plunger displacement pump.Valve body 21 is divided into four quadrants, the first hydraulic fluid port 36 by the coordinate system in mathematics
First quartile is located at bypass valve 23, the second hydraulic fluid port 37 is located at the second quadrant, and two check valves 22 are located at respectively the 3rd and the 4th
Quadrant, the first valve body kidney slot 34 is located at low-pressure area 39, communicates with the second hydraulic fluid port 37；Second valve body kidney slot 35 is located at low-pressure area
39, communicate with the first hydraulic fluid port 36, the hydraulic oil of higher-pressure region 38 is by the first hydraulic fluid port 36 and executive item（Such as hydraulic motor）Oil-feed
Mouth is connected, and low-pressure area 39 is then connected by the second hydraulic fluid port 37 with the oil-out of executive item, that is to say, that the hydraulic pressure of higher-pressure region 38
Oil flows out plunger displacement pump and enters after executive item acting from the first hydraulic fluid port 36, does not flow back to fuel tank, and further through the oil return opening of executive item
The second hydraulic fluid port 37 of plunger displacement pump is flowed back to, into low-pressure area 39.Because plunger displacement pump is volume-type hydraulic pump, and all positive displacements
All there is volumetric loss in pump, so the hydraulic oil volume that the volumetric ratio for flowing back to the hydraulic oil of the plunger displacement pump flows out can lack,
So when the hydraulic oil for flowing back to must be supplemented, otherwise described plunger displacement pump will be unable to carry out flow again.Due to the first hydraulic fluid port
36 is high pressure, and check valve 22 and the valve body 21 of fourth quadrant are brought into close contact to form sealing, i.e. the hydraulic oil of higher-pressure region 36 will not flow
Enter the cavity b between two check valves 22.Cavity b between two check valves 22 is full of the hydraulic oil flowed into from repairing hole a（Repairing hole a's
Hydraulic oil comes from repairing pump group part D）, the hydraulic oil of repairing pump group part D enters two check valves, 22 cavitys by repairing hole a
b.Now in the presence of oil compensation pressure, the check valve 22 of third quadrant is opened, and passage c is formed between valve body 21.At cavity b
Hydraulic oil flows through passage c into low-pressure side repairing hole d, and then into low-pressure area 39, the hydraulic oil to causing because of volumetric loss enters
Row is supplemented, and the flow for enabling the plunger displacement pump is carried out continuously, and plunger displacement pump can be with normal work.
The discharge capacity of plunger displacement pump（For each revolution, the volume of the hydraulic oil that pump is discharged is referred to as the discharge capacity of pump to main shaft 8）By
The volume change of the plunger cavity that plunger 17 is formed with cylinder body 20 is determined.And the volume change of this plunger cavity is produced with the stroke of plunger 17
It is raw, and the stroke of plunger is then by the Angle ambiguity of swash plate 12.If rotary handle 5, handle 5 can by installed in handle 5 with it is oblique
Slide block 4 between disk 12 drives swash plate 12 to rotate, i.e. the angle of swash plate 12 changes, in this way, you can controlling pump
Discharge capacity.Because the Angle ambiguity of swash plate 12 is stepless, therefore the flow-control of described plunger displacement pump is capable of achieving stepless control.
The device is reasonable in design, optimizes structure, and fault rate is low, safety in utilization and good operation stability；The device
Function is mainly realized that the drag losses for making the working oil of main pump component produce at work is less by valve component C, this structure
It is very different with existing design both at home and abroad, the use demand when front pump not only can be met, additionally provides Function Extension
Possibility, using effect is good.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in this utility model.Any reference in claim should not be considered as restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that for clarity those skilled in the art should
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (4)
1. a kind of close circuit variable pump, it is characterised in that including main pump component and repairing pump group part, the main pump component includes
Housing unit, housing assembly and valve component, housing unit, housing assembly, valve component and repairing pump group part pass through the first spiral shell
Bolt and the second bolt are connected, and housing unit includes housing, slide block, handle, main shaft, sliding bearing, swash plate and thrust bearing, slide
The quantity of bearing is two, and handle is installed in the housing and handle upper end is provided with from top to bottom handle spacing collar and handle portion
Part, slide block is arranged on handle and two sides of slide block are slidably mounted in the groove of swash plate, and swash plate is slidably mounted on two
On sliding bearing, sliding bearing is installed in the housing, and thrust bearing is arranged on the outside of swash plate and thrust bearing and is provided with
Fixture and the first sealing ring, main shaft passes through the side of housing and main shaft to be provided with two main shaft spacing collars, two main shafts limits
Spindle assemblies are provided between the circle of position, housing assembly is arranged on the spindle assemblies of housing unit, and housing assembly includes plunger, post
Plunger spring, plunger peace are cased with outside choker block piece, plunger spring and cylinder body, the front end of plunger and thrust bearing contacts and plunger
It is mounted in the plunger slot of cylinder body and piston spacer is provided between plunger and cylinder body, spline phase is passed through between cylinder body and main shaft
Even, valve component is carried out centering and coordinates and be connected by the first bolt and housing unit by seam and housing, valve body
Component includes valve body, check valve, bypass valve, valve plate and bearing, and the end face of valve plate is contacted with the rear end face of cylinder body, valve plate
Installed in the front of valve body and the middle setting of valve plate has a through hole, bearing through valve plate through hole and installed in valve body
Front, bearing contacts with spindle assemblies, and check valve is arranged on the side of valve body, bypass valve be arranged on the opposite side of valve body and
Fixed using nut, repairing pump group part by the second bolt be arranged on valve body the back side, repairing pump group part include repairing pump case,
Inner and outer rotors, overflow valve element and overflow valve spring, inner and outer rotors are arranged on the front of repairing pump case and using the second sealing
Circle sealing, overflow valve element is arranged in repairing pump case and overflow valve element outer cover has overflow valve spring.
2. close circuit variable pump according to claim 1, it is characterised in that the repairing pump group part also includes overflow valve
Lid, overflow valve gap is arranged on slippage pump housing tip and the bottom of overflow valve gap contacts with overflow valve spring.
3. close circuit variable pump according to claim 1 and 2, it is characterised in that the valve plate is fixed by screw
On valve body, the quantity of the second bolt is two, and the quantity of inner and outer rotors, main shaft and swash plate is one.
4. close circuit variable pump according to claim 1, it is characterised in that first sealing ring, the second sealing ring
Made using rubber or silica gel material with piston spacer, sliding bearing, housing, swash plate, cylinder body, valve plate, repairing pump case
Made using high manganese steel material with inner and outer rotors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153769.8U CN206175147U (en) | 2016-10-31 | 2016-10-31 | Closed variable piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621153769.8U CN206175147U (en) | 2016-10-31 | 2016-10-31 | Closed variable piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175147U true CN206175147U (en) | 2017-05-17 |
Family
ID=58679404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621153769.8U Expired - Fee Related CN206175147U (en) | 2016-10-31 | 2016-10-31 | Closed variable piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321391A (en) * | 2016-10-31 | 2017-01-11 | 上海福睦液压科技有限公司 | Closed variable plunger pump |
| CN110067714A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of axial plunger pump or motor |
-
2016
- 2016-10-31 CN CN201621153769.8U patent/CN206175147U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321391A (en) * | 2016-10-31 | 2017-01-11 | 上海福睦液压科技有限公司 | Closed variable plunger pump |
| CN106321391B (en) * | 2016-10-31 | 2020-04-28 | 李浩宇 | Closed variable plunger pump |
| CN110067714A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of axial plunger pump or 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 |
Granted publication date: 20170517 Termination date: 20201031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |