CN204371574U - A kind of high speed axial piston pump - Google Patents
A kind of high speed axial piston pump Download PDFInfo
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- CN204371574U CN204371574U CN201420762624.2U CN201420762624U CN204371574U CN 204371574 U CN204371574 U CN 204371574U CN 201420762624 U CN201420762624 U CN 201420762624U CN 204371574 U CN204371574 U CN 204371574U
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Abstract
The utility model relates to a kind of high speed axial piston pump, its innovative point is: the cylinder body of plunger pump adopts the bimetallic cylinder structure be made up of cylinder body body and each anti-wearing liner, the plunger mounting hole of cylinder body body is a cascade through hole, and it is made up of the first cylindrical hole, the second cylindrical hole, transitional pore and waist-shaped hole; In the first cylindrical hole that anti-wearing liner embeds plunger mounting hole and with cylinder body body interference fit, the inner of anti-wearing liner is spacing by the step surface formed between the first cylindrical hole and the second cylindrical hole; Formation seam is shunk in the inside plastic deformation of plunger mounting hole aperture place cylinder body body being positioned at anti-wearing liner outer end, to the spacing realization riveted joint in the outer end of anti-wearing liner.In the utility model, plunger mounting hole adopts cascade communicating structure, and the mode that anti-wearing liner outer end is then riveted by plastic deformation is spacing, and structure is simple, reliable, easy to process, without the need to increasing cylinder body axial length, extends working life.
Description
Technical field
The utility model relates to a kind of plunger pump, particularly a kind of high speed axial piston pump.
Background technique
Plunger pump is an important device of hydraulic system.It relies on plunger to-and-fro motion in cylinder body, makes the volume of seal operation cavity volume change to realize oil suction, force feed.Plunger pump has that rated pressure is high, compact structure, efficiency are high and the advantage such as Flow-rate adjustment is convenient, is widely used in the machineries such as lathe, forging and stamping, metallurgy, engineering, mine and other hydraulic equipment.
Axial piston pump (English name: Piston pump) is the vibration-direction of piston or the plunger plunger pump parallel with cylinder body central shaft.Axial piston pump utilizes plunger plunger hole in the to-and-fro motion parallel with the transmission shaft volume-variation that produces to carry out work.Because plunger and plunger hole are all circular pieces, add the class fit that can reach very high man-hour, therefore volumetric efficiency is high.
Current axial piston pump all arranges copper or other antifriction metal (AFM) linings in the plunger hole of cylinder body, to improve the working life of cylinder body.
Such as: number of patent application 200620116268.2 discloses a kind of anti-drop, it comprises interior metal lining, outer protective metal shell, the upper end of its outer protective metal shell or upper and lower end body process inside groove, load wherein at interior metal lining, interior jump ring or back-up ring is loaded onto in this inside groove, and then internally metal lining carries out axial limiting, avoiding metal lining in using process to come off affects normal use.
But still there is certain defect in this structure: during due to employing jump ring or back-up ring structure, need there is a safe length to the end face of slot pitch cylinder body body in jump ring, add the thickness of jump ring or back-up ring itself, therefore do not changing on the basis of volume, the axial length of cylinder body body, also in requisition for increase, not only increases consumptive material, simultaneously when being applied to the higher high speed plunger pump of precision, considerably increase cylinder body inertia, affect plunger pump performance and working life.
Also have part bimetallic cylinder structure to adopt Type of Welding, but welding personnel technical requirements is high, otherwise easily the defect such as cold crack and embrittlement is caused to welding portion, the corresponding increase of cost.
Summary of the invention
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, long service life and the low high speed axial piston pump of cost.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of high speed axial piston pump, plunger pump main body mainly comprises shell and is built in cylinder body, cylinder sleeve, plunger, the transmission shaft in shell, shell is cast-in-block variable-diameter structure, the large end of shell is the flanged surface for being connected with stroking mechanism, and small end is the power intake for supporting drive shaft; Cylinder body is one to be built in shell and the rotary structure coaxially arranged with shell, cylinder body cylindrical is bearing in roll in shell and with shell by cylinder sleeve and bearing unit and coordinates, the central coaxial of cylinder body is provided with the transmission shaft that shell is stretched out in end, and described cylinder body is undertaken supporting by cylinder sleeve and realizes high speed rotating by transmission shaft driving; Its innovative point is: described cylinder body adopts the bimetallic cylinder structure be made up of cylinder body body and each anti-wearing liner, described cylinder body body has odd number axis and equally distributed plunger mounting hole parallel with cylinder body body axis, plunger mounting hole is a cascade through hole, and it is by coaxially to arrange and the first cylindrical hole, the second cylindrical hole, transitional pore and waist-shaped hole that diameter reduces gradually are formed; In the first cylindrical hole that described anti-wearing liner just can embed plunger mounting hole and with cylinder body body interference fit, the inner of anti-wearing liner is spacing by the step surface formed between the first cylindrical hole and the second cylindrical hole; The outer end contracting of anti-wearing liner is in plunger mounting hole and apart from this side cylinder body body end face 0.5-1.3mm, formation seam is shunk in the inside plastic deformation of plunger mounting hole aperture place cylinder body body being positioned at anti-wearing liner outer end, to the spacing realization riveted joint in the outer end of anti-wearing liner.
Preferably, the internal diameter of described second cylindrical hole is greater than the internal diameter of anti-wearing liner.
The utility model has the advantage of: in the utility model, plunger mounting hole adopts cascade communicating structure, the inner of anti-wearing liner is spacing by the step surface formed between the first cylindrical hole and the second cylindrical hole, the mode that outer end is then riveted by plastic deformation is spacing, structure is simple, reliable, easy to process, without the need to increasing cylinder body axial length, extend working life.
The internal diameter of the second cylindrical hole is greater than the internal diameter of anti-wearing liner, when plunger is moved axially in cylinder body can not and anti-wearing liner between cause interference, guarantee the displacement distance of plunger, avoid increasing cylinder body length and the cost that causes increases; Simultaneously also be conducive to the resistance reducing fuel-displaced direction, be conducive to plunger and move axially to extrude in hydraulic oil process and reduce intrinsic pressure loss, and then reduce power consumption.
Accompanying drawing explanation
Fig. 1 is that the high speed shaft that relates to of the utility model is to plunger pump structure schematic diagram.
Fig. 2 is the utility model cylinder body sectional view.
Fig. 3 is the utility model cylinder body side view.
Fig. 4 is the utility model cylinder body body and position, anti-wearing liner outer end partial enlarged drawing.
Embodiment
Housing structure of the present utility model is mainly applied and high speed axial piston pump, as shown in Figure 1, its plunger pump main body mainly comprises shell 1 and is built in cylinder body 2, cylinder sleeve 3, plunger 4, the transmission shaft 5 in shell 1, shell 1 is cast-in-block variable-diameter structure, the large end of shell 1 is the flanged surface for being connected with stroking mechanism 6, and small end is the power intake for supporting drive shaft 5; Cylinder body 2 is one to be built in shell 1 and the rotary structure that arrange coaxial with shell 1, cylinder body 2 cylindrical is bearing in roll in shell 1 and with shell 1 by cylinder sleeve 3 and bearing unit 7 and coordinates, the central coaxial of cylinder body 2 is provided with the transmission shaft 5 that shell 1 is stretched out in end, and cylinder body 2 is undertaken supporting by cylinder sleeve 3 and realizes high speed rotating by transmission shaft 5 driving.
In the utility model, cylinder body adopts the bimetallic cylinder structure be made up of cylinder body body 21 and each anti-wearing liner 22, and cylinder body body 21 has odd number axis and equally distributed plunger mounting hole parallel with cylinder body body axis.
As shown in Figure 3, plunger mounting hole is a cascade through hole, and it is by coaxially to arrange and the first cylindrical hole a, the second cylindrical hole b, transitional pore c and waist-shaped hole d that diameter reduces gradually are formed; First cylindrical hole a is used for interference fit anti-wearing liner 22, second cylindrical hole b and forms the step surface inner spacing to anti-wearing liner 22 for coordinating with the first cylindrical hole a, and waist-shaped hole d is used for plunger hole to be communicated with oil distribution casing.
In the first cylindrical hole that anti-wearing liner 22 just can embed plunger mounting hole and with cylinder body body 21 interference fit.
The inner of anti-wearing liner 1 is spacing by the step surface formed between the first cylindrical hole and the second cylindrical hole; The outer end contracting of anti-wearing liner 1 is in plunger mounting hole and apart from this side cylinder body body 21 end face 0.5-1.3mm, formation seam is shunk in the inside plastic deformation of plunger mounting hole aperture place cylinder body body 21 being positioned at anti-wearing liner 22 outer end, to the spacing realization riveted joint in the outer end of anti-wearing liner 22.
As the utility model preferred embodiment, the internal diameter of the second cylindrical hole is greater than the internal diameter of anti-wearing liner.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. a high speed axial piston pump, plunger pump main body mainly comprises shell and is built in cylinder body, cylinder sleeve, plunger, the transmission shaft in shell,
Shell is cast-in-block variable-diameter structure, and the large end of shell is the flanged surface for being connected with stroking mechanism, and small end is the power intake for supporting drive shaft; Cylinder body is one to be built in shell and the rotary structure coaxially arranged with shell, cylinder body cylindrical is bearing in roll in shell and with shell by cylinder sleeve and bearing unit and coordinates, the central coaxial of cylinder body is provided with the transmission shaft that shell is stretched out in end, and described cylinder body is undertaken supporting by cylinder sleeve and realizes high speed rotating by transmission shaft driving;
It is characterized in that: described cylinder body adopts the bimetallic cylinder structure be made up of cylinder body body and each anti-wearing liner,
Described cylinder body body has odd number axis and equally distributed plunger mounting hole parallel with cylinder body body axis, plunger mounting hole is a cascade through hole, and it is by coaxially to arrange and the first cylindrical hole, the second cylindrical hole, transitional pore and waist-shaped hole that diameter reduces gradually are formed;
In the first cylindrical hole that described anti-wearing liner just can embed plunger mounting hole and with cylinder body body interference fit, the inner of anti-wearing liner is spacing by the step surface formed between the first cylindrical hole and the second cylindrical hole; The outer end contracting of anti-wearing liner is in plunger mounting hole and apart from this side cylinder body body end face 0.5-1.3mm, formation seam is shunk in the inside plastic deformation of plunger mounting hole aperture place cylinder body body being positioned at anti-wearing liner outer end, to the spacing realization riveted joint in the outer end of anti-wearing liner.
2. high speed axial piston pump according to claim 1, is characterized in that: the internal diameter of described second cylindrical hole is greater than the internal diameter of anti-wearing liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762624.2U CN204371574U (en) | 2014-12-08 | 2014-12-08 | A kind of high speed axial piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420762624.2U CN204371574U (en) | 2014-12-08 | 2014-12-08 | A kind of high speed axial piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371574U true CN204371574U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420762624.2U Active CN204371574U (en) | 2014-12-08 | 2014-12-08 | A kind of high speed axial piston pump |
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| Country | Link |
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| CN (1) | CN204371574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345034A (en) * | 2018-04-04 | 2019-10-18 | 罗伯特·博世有限公司 | Hydrostatic axial piston engine |
| CN114017276A (en) * | 2022-01-06 | 2022-02-08 | 北京航空航天大学宁波创新研究院 | Rotor, rotor subassembly and plunger equipment |
-
2014
- 2014-12-08 CN CN201420762624.2U patent/CN204371574U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345034A (en) * | 2018-04-04 | 2019-10-18 | 罗伯特·博世有限公司 | Hydrostatic axial piston engine |
| CN114017276A (en) * | 2022-01-06 | 2022-02-08 | 北京航空航天大学宁波创新研究院 | Rotor, rotor subassembly and plunger equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |