CN207715311U - A kind of zero-bit centering hydraulic variable flow axial plunger pump - Google Patents
A kind of zero-bit centering hydraulic variable flow axial plunger pump Download PDFInfo
- Publication number
- CN207715311U CN207715311U CN201721861663.8U CN201721861663U CN207715311U CN 207715311 U CN207715311 U CN 207715311U CN 201721861663 U CN201721861663 U CN 201721861663U CN 207715311 U CN207715311 U CN 207715311U
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- China
- Prior art keywords
- variable
- piston
- zero
- housing
- axial plunger
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- 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.)
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Abstract
The utility model discloses a kind of zero-bit centering hydraulic variable flow axial plunger pumps,Including the pump housing,Pump case is equipped on the outside of the pump housing,Right side, which is run through, in the pump housing transmission shaft,Side is equipped with cylinder body in the pump case,Side is equipped with plunger in the cylinder body,The transmission shaft left end is equipped with housing,Inner sleeve is equipped in the housing,Return plate is equipped on the left of the spring,Thrust plate is installed on the left of the return plate,Variable head is installed on the left of the thrust plate,Running through on the variable head has axis pin,The axis pin left end is equipped with variable piston,Both sides are equipped with piston to the variable piston up and down,The variable piston is equipped with adjusting sleeve in both sides outer end up and down,Flange is installed on the outside of the adjusting sleeve,The utility model structure novel,It is easy to operate,Eliminate a sleeve spring,Limit journey piston,Adjusting screw,The use of the mechanisms such as adjusting nut accessory,It equally may be implemented to require function,Reduce the maintenance of the cost of equipment.
Description
Technical field
The utility model is related to plunger pump technique field, specially a kind of zero-bit centering hydraulic variable flow axial plunger pump.
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 vessel changes to realize oil suction, pressure oil.Plunger pump high, compact-sized, efficient and flow with rated pressure
The advantages that easy to adjust.Plunger pump is widely used in high pressure, big flow and flow and needs the occasion adjusted.Traditional zero-bit pair
Middle hydraulic variable flow axial plunger pump configuration needs the mechanisms such as a sleeve spring, limit journey piston, adjusting screw, adjusting nut, improves
The complexity of structure and the operating cost of equipment.
Utility model content
The purpose of this utility model is to provide a kind of zero-bit centering hydraulic variable flow axial plunger pumps, to solve above-mentioned background
The problem of being proposed in technology.
To achieve the above object, the utility model provides the following technical solutions：A kind of zero-bit centering hydraulic variable flow axial columns
Plug pumps, including the pump housing, pump case is equipped on the outside of the pump housing, the interior right side of the pump housing, which is run through, transmission shaft, side in the pump case
Equipped with cylinder body, side is equipped with plunger in the cylinder body, is equipped with piston shoes on the left of the plunger, the transmission shaft left end is equipped with
Housing, the housing is interior to be equipped with inner sleeve, and left side is equipped with spring in the inner sleeve, and the spring left side is described equipped with return plate
Thrust plate is installed on the left of return plate, variable head is installed, running through on the variable head has axis pin, described on the left of the thrust plate
Axis pin left end is equipped with variable piston, and the upper and lower both sides of the variable piston are equipped with piston, the upper and lower both sides outer end of the variable piston
Adjusting sleeve is installed, flange is installed on the outside of the adjusting sleeve.
Preferably, the cylinder body side is equipped with oil distribution casing.
Preferably, variable shell is installed on the left of the variable piston, the variable shell is bolted to connection.
Preferably, the piston outer side covering has protheca.
Preferably, circumferential direction offers location hole on the flange, and protective cover is equipped on the outside of the flange.
Preferably, it is located in the housing on the right side of inner sleeve and also is provided with spring.
Compared with prior art, the utility model has the beneficial effects that：A kind of zero-bit centering hydraulic variable flow of the utility model
Axial plunger pump, structure novel is easy to operate, eliminates the mechanisms such as a sleeve spring, limit journey piston, adjusting screw, adjusting nut
The use of accessory equally may be implemented to require function, reduce the maintenance of the cost of equipment, have very high practicability, significantly
It is functional to improve a kind of use of zero-bit centering hydraulic variable flow axial plunger pump, ensures its using effect and utilization benefit,
It is suitble to be widely popularized.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
In figure：1 pump housing, 2 pump cases, 3 transmission shafts, 4 oil distribution casings, 5 cylinder bodies, 6 plungers, 7 piston shoes, 8 return plates, 9 housings, 10
Inner sleeve, 11 springs, 12 thrust plates, 13 variable heads, 14 axis pins, 15 variable pistons, 16 variable shells, 17 pistons, 18 prothecas, 19 are adjusted
A whole set of, 20 flanges.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of technical solution：A kind of zero-bit centering hydraulic variable flow axial plunger pump,
Including the pump housing 1,1 outside of the pump housing is equipped with pump case 2, and the interior right side of the pump housing 1, which is run through, transmission shaft 3, side in the pump case 2
Equipped with cylinder body 5, side is equipped with plunger 6 in the cylinder body 5, and 6 left side of the plunger is equipped with piston shoes 7,3 left end of the transmission shaft
Housing 9 is installed, inner sleeve 10 is equipped in the housing 9, left side is equipped with spring 11 in the inner sleeve 10, and the spring 11 is left
Side is equipped with return plate 8, and 8 left side of the return plate is equipped with thrust plate 12, and 12 left side of the thrust plate is equipped with variable head 13, institute
Stating to run through on variable head 13 has axis pin 14,14 left end of the axis pin to be equipped with variable piston 15, the variable piston about 15 two
Side is equipped with piston 17, and about 15 both sides outer end of the variable piston is equipped with adjusting sleeve 19, and 19 outside of the adjusting sleeve is equipped with
Flange 20,5 side of the cylinder body are equipped with oil distribution casing 4, and 15 left side of the variable piston is equipped with variable shell 16, the variable
Shell 16 is bolted to connection, and 17 outer side covering of the piston has a protheca 18, and circumferential direction offers positioning on the flange 20
Hole, 20 outside of the flange are equipped with protective cover, and 10 right side of inner sleeve is located in the housing 9 and also is provided with spring 11.
Operation principle：A kind of zero-bit centering hydraulic variable flow axial plunger pump of the utility model, in use, in this structure, set
It is fixed, using interference fit, piston 17 is transportable, is moved using sliding matching mode, from flange 20 above
The outer oil-control of input, variable piston 15 and piston 17 move down, and variable piston 15 and adjusting sleeve 19 contact, and reach maximum pump discharge,
The step that piston 17 reaches set is motionless, conversely, inputting outer oil-control, variable piston 15 and piston 17 to moving up from following flange 20
Dynamic, variable piston 15 and adjusting sleeve 19 contact, and reach reversed maximum pump discharge, commutate when using the 3-position 4-way of p-type slide valve function
When valve controls, the both ends step of variable piston 15 is contacted with piston 17, can keep zero eccentric position in running no load,
Since adjusting sleeve 19 is adjustable, the different output displacement in both ends can be adjusted, it is zero that one end, which can also export,.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of zero-bit centering hydraulic variable flow axial plunger pump, including the pump housing (1), it is characterised in that：It is set on the outside of the pump housing (1)
There is pump case (2), through there is transmission shaft (3), the interior side of the pump case (2) is equipped with cylinder body (5), described on the pump housing (1) interior right side
Cylinder body (5) interior side is equipped with plunger (6), and piston shoes (7), transmission shaft (3) the left end installation are equipped on the left of the plunger (6)
There is housing (9), inner sleeve (10) is equipped in the housing (9), left side is equipped with spring (11), the spring in the inner sleeve (10)
(11) left side is equipped with return plate (8), and thrust plate (12) is equipped on the left of the return plate (8), is pacified on the left of the thrust plate (12)
Running through equipped with variable head (13), on the variable head (13) has axis pin (14), axis pin (14) left end to be equipped with variable piston
(15), both sides are equipped with piston (17) to the variable piston (15) up and down, and the variable piston (15) is equipped with both sides outer end up and down
Adjusting sleeve (19), adjusting sleeve (19) outside are equipped with flange (20).
2. a kind of zero-bit centering hydraulic variable flow axial plunger pump according to claim 1, it is characterised in that：The cylinder body
(5) side is equipped with oil distribution casing (4).
3. a kind of zero-bit centering hydraulic variable flow axial plunger pump according to claim 1, it is characterised in that：The variable is lived
Variable shell (16) is installed on the left of plug (15), the variable shell (16) is bolted to connection.
4. a kind of zero-bit centering hydraulic variable flow axial plunger pump according to claim 1, it is characterised in that：The piston
(17) outer side covering has protheca (18).
5. a kind of zero-bit centering hydraulic variable flow axial plunger pump according to claim 1, it is characterised in that：The flange
(20) circumferential direction offers location hole on, and protective cover is equipped on the outside of the flange (20).
6. a kind of zero-bit centering hydraulic variable flow axial plunger pump according to claim 1, it is characterised in that：The housing
(9) it is located on the right side of inner sleeve (10) and also is provided with spring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721861663.8U CN207715311U (en) | 2017-12-27 | 2017-12-27 | A kind of zero-bit centering hydraulic variable flow axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721861663.8U CN207715311U (en) | 2017-12-27 | 2017-12-27 | A kind of zero-bit centering hydraulic variable flow axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715311U true CN207715311U (en) | 2018-08-10 |
Family
ID=63050482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721861663.8U Expired - Fee Related CN207715311U (en) | 2017-12-27 | 2017-12-27 | A kind of zero-bit centering hydraulic variable flow axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207715311U (en) |
-
2017
- 2017-12-27 CN CN201721861663.8U patent/CN207715311U/en not_active Expired - Fee Related
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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: 20180810 Termination date: 20191227 |