CN112065681A - Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump - Google Patents
Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump Download PDFInfo
- Publication number
- CN112065681A CN112065681A CN202010970960.6A CN202010970960A CN112065681A CN 112065681 A CN112065681 A CN 112065681A CN 202010970960 A CN202010970960 A CN 202010970960A CN 112065681 A CN112065681 A CN 112065681A
- Authority
- CN
- China
- Prior art keywords
- swash plate
- piston
- stepless
- adjusting
- follow
- Prior art date
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/28—Control of machines or pumps with stationary cylinders
- F04B1/29—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block
- F04B1/295—Control of machines or pumps with stationary cylinders by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
Abstract
The invention discloses a stepless adjusting mechanism and an adjusting method for the inclination angle of a swash plate of a hydraulic plunger pump, which comprises a plunger pump shell, wherein one end of the plunger pump shell is provided with the swash plate, an adjusting screw hole corresponding to the position of the swash plate is also arranged in the plunger pump shell, a stepless adjusting follow-up piston sleeve is arranged in the adjusting screw hole, and the inner side of the stepless adjusting follow-up piston sleeve is sleeved with a fixed follow-up piston matched with the swash plate; and a locking nut is arranged on the outer side of the stepless regulation follow-up piston sleeve. The servo piston is designed to be fixed in length, the servo piston sleeve is designed to be an adjustable structure which can enter and exit from an adjusting screw hole of the shell, when the inclination angle of the swash plate is adjusted, the servo piston and the servo piston sleeve are not required to be decomposed to complete stepless adjustment of the angle of the swash plate, the expected angle of the swash plate is achieved, the length grading of the servo piston is avoided, the adjustment of the inclination angle of the swash plate is greatly facilitated, and the swash plate angle adjusting device has the characteristics of convenience in adjustment, low adjusting cost and no pollutant entering in the adjusting process.
Description
Technical Field
The invention relates to a mechanism for adjusting the inclination angle of a swash plate of a hydraulic plunger pump, in particular to a mechanism and a method for stepless adjusting the inclination angle of the swash plate of the hydraulic plunger pump.
Background
The hydraulic pump is a core element of the hydraulic system and provides a power source for the hydraulic system, and when a hydraulic user demands the hydraulic pump in the use process, the inclination angle of the swash plate of the hydraulic pump is in the maximum angle state, so that the displacement of the hydraulic pump is in the maximum state, namely the output flow of the hydraulic pump is the maximum value. In common use, the inclination angle of a large-flow swash plate of a hydraulic pump is controlled by the length of a slave piston, if the inclination angle of the swash plate is smaller, the slave piston with shorter length needs to be replaced, if the inclination angle of the swash plate is larger, the slave piston with longer length needs to be replaced, therefore, in order to ensure that the inclination angle of the swash plate of the hydraulic pump can meet the maximum range interval of a design value, the design often needs to grade the length of the slave piston and process according to each grade, and in the use or test process of the hydraulic pump, if the inclination angle of the swash plate of the hydraulic pump is not enough, the slave piston can only be replaced in a grading way to meet the proper angle of the swash plate, when the slave piston is replaced, a slave piston sleeve needs to be separated, so that the whole replacement and adjustment process is quite inconvenient, and external pollutants are easily; meanwhile, the follow-up piston of each grade needs to be processed, so that the production management is not facilitated and the cost is reduced. Therefore, the prior art has the problems of inconvenient adjustment, easy introduction of pollutants during adjustment and replacement and high adjustment cost.
Disclosure of Invention
The invention aims to provide a stepless adjusting mechanism and an adjusting method for the inclination angle of a swash plate of a hydraulic plunger pump. The invention has the characteristics of convenient adjustment, low adjustment cost and no pollutant entering in the adjustment process.
The technical scheme of the invention is as follows: a stepless regulating mechanism for the inclination angle of a swash plate of a hydraulic plunger pump is characterized in that one end of the shell of a plunger pump is provided with the swash plate, a regulating screw hole corresponding to the position of the swash plate is further arranged in the shell of the plunger pump, a stepless regulating follow-up piston sleeve is arranged in the regulating screw hole, and the inner side of the stepless regulating follow-up piston sleeve is sleeved with a fixed follow-up piston matched with the swash plate; and a locking nut is arranged on the outer side of the stepless regulation follow-up piston sleeve.
In the stepless adjusting mechanism for the inclination angle of the swash plate of the hydraulic plunger pump, the stepless adjusting follow-up piston sleeve comprises a sleeve body, the outer end of the sleeve body is provided with a screwing hole, and the inner end of the sleeve body is provided with a piston hole; the surface of the sleeve body is sequentially provided with a locking external thread, a first sealing groove, an installation external thread and a second sealing groove from outside to inside.
In the stepless inclination angle adjusting mechanism for the swash plate of the hydraulic plunger pump, the first sealing groove and the second sealing groove are respectively provided with a first sealing ring and a second sealing ring.
In the swash plate inclination angle stepless adjusting mechanism of the hydraulic plunger pump, a liquid flowing hole located on the surface of the sleeve body is further formed between the mounting external thread and the second sealing groove, and the liquid flowing hole is communicated with the piston hole.
In the above stepless swash plate angle adjusting mechanism for a hydraulic plunger pump, the screwing hole is an inner hexagonal hole.
The method for adjusting the inclination angle stepless adjusting mechanism of the swash plate of the hydraulic plunger pump is realized by adjusting the position of the stepless adjusting follow-up piston sleeve in the plunger pump shell to drive the position adjustment of the fixed follow-up piston, and the stepless adjustment of the inclination angle of the swash plate is completed through the matching between the fixed follow-up piston and the swash plate.
Compared with the prior art, the servo piston is designed to be fixed in length, the servo piston sleeve is designed to be an adjustable structure which can pass in and out of the adjusting screw hole of the shell, when the inclination angle of the swash plate is adjusted, the stepless adjustment of the angle of the swash plate can be completed without decomposing the servo piston and the servo piston sleeve, the expected angle of the swash plate is achieved, the length grading of the servo piston is avoided, the adjustment of the inclination angle of the swash plate is greatly facilitated, the adjusting cost (including the labor cost and the cost of the piston) can be effectively reduced, and the piston does not need to be managed any more; and in the whole adjusting process, the piston sleeve does not need to be disassembled and assembled, so that external pollutants can be effectively prevented from entering the pump. The variable hydraulic pump swash plate inclination angle stepless regulation variable mechanism can be widely applied to variable hydraulic pumps equipped in various fields such as engineering machinery, agricultural machinery, aerospace and the like. The swash plate inclination angle adjusting device can adjust the corresponding swash plate inclination angle when the hydraulic pump is in a large flow at any time to meet the large flow requirement of the hydraulic pump, the follow-up piston sleeve and the follow-up piston do not need to be decomposed during adjustment, the adjustment of the swash plate inclination angle can be completed only by screwing in or screwing out the stepless adjustment follow-up piston sleeve, and the swash plate inclination angle adjusting device is convenient to operate, good in maintainability and high in safety. In conclusion, the invention has the characteristics of convenient adjustment, low adjustment cost and no pollutant entering in the adjustment process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a structural view of a continuously variable adjusting slave piston sleeve.
The labels in the figures are: 1-plunger pump shell, 2-locking nut, 3-stepless adjustment follow-up piston sleeve, 4-fixed follow-up piston, 5-first sealing ring, 6-second sealing ring, 7-swash plate, 8-adjustment screw hole, 301-sleeve body, 302-screwed hole, 303-piston hole, 304-locking external thread, 305-first sealing groove, 306-mounting external thread, 307-second sealing groove and 308-fluid hole.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. A stepless adjusting mechanism for the inclination angle of a swash plate of a hydraulic plunger pump is shown in figures 1 and 2 and comprises a plunger pump shell 1, wherein one end of the plunger pump shell 1 is provided with a swash plate 7, an adjusting screw hole 8 corresponding to the position of the swash plate 7 is also arranged in the plunger pump shell 1, a stepless adjusting follow-up piston sleeve 3 is arranged in the adjusting screw hole 8, and a fixed follow-up piston 4 matched with the swash plate 7 is sleeved on the inner side of the stepless adjusting follow-up piston sleeve 3; and a locking nut 2 is arranged on the outer side of the stepless regulation follow-up piston sleeve 3.
The stepless-adjustment follow-up piston sleeve 3 comprises a sleeve body 301, the outer end of the sleeve body 301 is provided with a screwing hole 302, and the inner end of the sleeve body 301 is provided with a piston hole 303; the surface of the sleeve body 301 is provided with a locking external thread 304, a first sealing groove 305, a mounting external thread 306 and a second sealing groove 307 in sequence from outside to inside.
A first seal ring 5 and a second seal ring 6 are respectively arranged in the first seal groove 305 and the second seal groove 307.
A liquid flow hole 308 is formed between the mounting external thread 306 and the second sealing groove 307 and positioned on the surface of the sleeve body 301, and the liquid flow hole 308 is communicated with the piston hole 303.
The feed holes 308 are arranged obliquely.
The screw hole 302 is an inner hexagonal hole.
The method for regulating inclined angle stepless regulation mechanism of hydraulic plunger pump is characterized by that it utilizes the regulation of position of stepless regulation follow-up piston sleeve in the plunger pump shell body to drive the position regulation of fixed follow-up piston, and utilizes the cooperation between fixed follow-up piston and inclined plate to implement stepless regulation of inclined angle of inclined plate.
(As shown in FIGS. 1 and 2, the follower piston (fixed length) is mounted at phi of the infinitely variable follower piston sleevecIn the hole, the phi of the follow-up piston sleeve is steplessly adjusteda、ΦbThe locking external thread is used for installing a locking nut to perform locking and fixing of the stepless adjustment follow-up piston sleeve.
When the hydraulic pump is used in a test or an outfield, if the output flow of the hydraulic pump is smaller than the full flow pressure, namely the inclination angle of the swash plate is smaller, the locking nut is unscrewed in the anticlockwise rotation, an external hexagonal tool is placed in an inner hexagonal hole (screwed hole) of the stepless regulation follow-up piston sleeve, the stepless regulation follow-up piston sleeve is retreated outwards in the anticlockwise rotation, so that the L is increased, the swash plate can rotate around the center O of the trunnion due to the self weight, the inclination angle gamma of the swash plate is increased, the output flow of the hydraulic pump can be increased, and when the required flow value is regulated, the locking nut is screwed down clockwise.
On the contrary, if the output flow is larger when the hydraulic pump is under the full-flow pressure, namely the inclination angle of the swash plate is larger, the locking nut is unscrewed in a counterclockwise rotating mode, an outer hexagonal tool is placed in an inner hexagonal hole of the stepless-adjustment follow-up piston sleeve, the stepless-adjustment follow-up piston sleeve is moved inwards in a clockwise rotating mode to reduce L, the swash plate can rotate around the center 0 of the trunnion due to the self weight of the swash plate, the inclination angle gamma of the swash plate is reduced, the output flow of the hydraulic pump can be reduced, and the locking nut is screwed down clockwise when the required flow value is adjusted.
Claims (6)
1. The utility model provides a stepless adjustment mechanism of hydraulic pressure plunger pump sloping cam plate inclination which characterized in that: the plunger pump comprises a plunger pump shell (1), wherein one end of the plunger pump shell (1) is provided with a swash plate (7), an adjusting screw hole (8) corresponding to the position of the swash plate (7) is further arranged in the plunger pump shell (1), a stepless adjusting follow-up piston sleeve (3) is arranged in the adjusting screw hole (8), and a fixed follow-up piston (4) matched with the swash plate (7) is sleeved on the inner side of the stepless adjusting follow-up piston sleeve (3); the outer side of the stepless regulation follow-up piston sleeve (3) is provided with a locking nut (2).
2. The mechanism of claim 1 for infinitely adjusting the angle of inclination of a swash plate of a hydraulic piston pump, comprising: the stepless-adjustment follow-up piston sleeve (3) comprises a sleeve body (301), the outer end of the sleeve body (301) is provided with a screwing hole (302), and the inner end of the sleeve body (301) is provided with a piston hole (303); the surface of the sleeve body (301) is sequentially provided with a locking external thread (304), a first sealing groove (305), an installation external thread (306) and a second sealing groove (307) from outside to inside.
3. The mechanism of claim 2, wherein the mechanism is characterized in that: and a first sealing ring (5) and a second sealing ring (6) are respectively arranged in the first sealing groove (305) and the second sealing groove (307).
4. The mechanism of claim 2, wherein the mechanism is characterized in that: and a liquid flow hole (308) positioned on the surface of the sleeve body (301) is also formed between the mounting external thread (306) and the second sealing groove (307), and the liquid flow hole (308) is communicated with the piston hole (303).
5. The mechanism of claim 2, wherein the mechanism is characterized in that: the screwing hole (302) is an inner hexagonal hole.
6. The method for realizing the stepless adjusting mechanism of the inclination angle of the swash plate of the hydraulic piston pump as claimed in any one of claims 1 to 5, is characterized in that: the position of the fixed type follow-up piston is driven to be adjusted by adjusting the position of the stepless adjusting follow-up piston sleeve in the plunger pump shell, and the stepless adjusting of the inclination angle of the swash plate is completed through the matching between the fixed type follow-up piston and the swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970960.6A CN112065681A (en) | 2020-09-16 | 2020-09-16 | Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010970960.6A CN112065681A (en) | 2020-09-16 | 2020-09-16 | Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112065681A true CN112065681A (en) | 2020-12-11 |
Family
ID=73695412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010970960.6A Pending CN112065681A (en) | 2020-09-16 | 2020-09-16 | Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112065681A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503235A (en) * | 2021-06-07 | 2021-10-15 | 中航力源液压股份有限公司 | Variable regulating mechanism for hydraulic pump |
| CN113669222A (en) * | 2021-08-30 | 2021-11-19 | 北京航空航天大学宁波创新研究院 | Swash plate limiting and adjusting mechanism and constant-pressure variable pump |
| CN113669221A (en) * | 2021-08-30 | 2021-11-19 | 北京航空航天大学宁波创新研究院 | Load sensitive variable mechanism of variable pump and variable pump |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203476625U (en) * | 2013-09-05 | 2014-03-12 | 颜疆远 | Inclined disc type axial plunger pump |
| CN110043526A (en) * | 2019-04-26 | 2019-07-23 | 燕山大学 | A kind of Direct Action Type overflow motor and its hydraulic pressure circuit |
| CN110778475A (en) * | 2018-07-12 | 2020-02-11 | 株式会社神户制钢所 | Hydraulic rotary machine |
| CN210422901U (en) * | 2019-08-22 | 2020-04-28 | 陈南南 | Low-pulsation axial plunger pump with flow adjustable from zero |
| CN111295514A (en) * | 2018-09-28 | 2020-06-16 | Ｋｙｂ株式会社 | Hydraulic rotary machine |
| CN111472955A (en) * | 2020-03-26 | 2020-07-31 | 浙江大学 | External swash plate plunger pump pre-pressing force and variable adjusting device |
| CN111622913A (en) * | 2019-02-28 | 2020-09-04 | 泰连德国有限公司 | Variable displacement reciprocating piston unit generating piston stroke speed and length signals |
-
2020
- 2020-09-16 CN CN202010970960.6A patent/CN112065681A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203476625U (en) * | 2013-09-05 | 2014-03-12 | 颜疆远 | Inclined disc type axial plunger pump |
| CN110778475A (en) * | 2018-07-12 | 2020-02-11 | 株式会社神户制钢所 | Hydraulic rotary machine |
| CN111295514A (en) * | 2018-09-28 | 2020-06-16 | Ｋｙｂ株式会社 | Hydraulic rotary machine |
| CN111622913A (en) * | 2019-02-28 | 2020-09-04 | 泰连德国有限公司 | Variable displacement reciprocating piston unit generating piston stroke speed and length signals |
| CN110043526A (en) * | 2019-04-26 | 2019-07-23 | 燕山大学 | A kind of Direct Action Type overflow motor and its hydraulic pressure circuit |
| CN210422901U (en) * | 2019-08-22 | 2020-04-28 | 陈南南 | Low-pulsation axial plunger pump with flow adjustable from zero |
| CN111472955A (en) * | 2020-03-26 | 2020-07-31 | 浙江大学 | External swash plate plunger pump pre-pressing force and variable adjusting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113503235A (en) * | 2021-06-07 | 2021-10-15 | 中航力源液压股份有限公司 | Variable regulating mechanism for hydraulic pump |
| CN113503235B (en) * | 2021-06-07 | 2023-07-25 | 中航力源液压股份有限公司 | Variable adjusting mechanism for hydraulic pump |
| CN113669222A (en) * | 2021-08-30 | 2021-11-19 | 北京航空航天大学宁波创新研究院 | Swash plate limiting and adjusting mechanism and constant-pressure variable pump |
| CN113669221A (en) * | 2021-08-30 | 2021-11-19 | 北京航空航天大学宁波创新研究院 | Load sensitive variable mechanism of variable pump and variable pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112065681A (en) | Stepless adjusting mechanism and method for inclination angle of swash plate of hydraulic plunger pump | |
| US4522571A (en) | Peristaltic pump | |
| CN104889733A (en) | Vertical cylinder assembling machine | |
| CN105855089A (en) | Fluid supply device of plunger pump and plunger pump control system | |
| CN110529446B (en) | Digital control flow cartridge valve and control method thereof | |
| CN205744421U (en) | A kind of adjustable single screw pump stator | |
| CN204893398U (en) | Vertical dress jar machine | |
| CN207788761U (en) | A kind of Portable manual hydraulic pressure spanner | |
| CN207468471U (en) | The bindiny mechanism of edge machine bellows and molten tin bath banding | |
| CN107246479B (en) | Flow regulating device and tail gas washing system with same | |
| CN108247091A (en) | A kind of static pressure expands handle of a knife | |
| CN103968127A (en) | Pressure valve of oil press | |
| CN112344041A (en) | Waterscape fountain flow stabilizing valve | |
| CN210978682U (en) | High-precision adjusting mechanism of water proportional valve | |
| CN215861201U (en) | Pull rod fastening nut of multistage centrifugal pump and fastening device for fastening nut | |
| CN215059585U (en) | Axial flow type fixed cone valve | |
| CN205628378U (en) | Pour plug pump supplies liquid device and pour plug pump control system | |
| CN205780707U (en) | A kind of operating phase adjustable bi-directional drive gear | |
| CN218543307U (en) | Regulation formula decompression check valve | |
| CN205559751U (en) | Arm worm adjusting device | |
| CN209025937U (en) | A kind of special large scale equipment steel structure connecting member | |
| CN220582027U (en) | Central control system | |
| CN220134768U (en) | PVDF pipeline valve | |
| CN218207284U (en) | Throttle valve capable of being precisely adjusted | |
| CN218063692U (en) | Water-saving pipeline for irrigation and water conservancy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201211 |