CN108317118B - Buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method - Google Patents
Buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method Download PDFInfo
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- CN108317118B CN108317118B CN201810303739.8A CN201810303739A CN108317118B CN 108317118 B CN108317118 B CN 108317118B CN 201810303739 A CN201810303739 A CN 201810303739A CN 108317118 B CN108317118 B CN 108317118B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims abstract 4
- 238000009434 installation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a novel buckle type split plunger pump swash plate variable regulating mechanism and a regulating method, wherein the mechanism comprises a buckle connecting seat, a hinged connecting rod, a variable regulating guide seat, a variable spring, a variable valve core, a valve sleeve and a spring catch; the buckle connecting seat is fixedly connected with the swash plate body; one end of the hinged connecting rod is hinged with the buckle connecting seat, and the other end of the hinged connecting rod is hinged with the variable adjusting guide seat; the valve sleeve is arranged in the plunger pump shell, and the front end of the valve sleeve is provided with a spring catch; one end of the variable valve core is in threaded connection with the variable adjusting guide seat, and the other end of the variable valve core is arranged in the valve sleeve; the variable spring is sleeved on the variable valve core; the valve bush is provided with two oil holes which are respectively communicated with two control oil holes on the shell of the plunger pump. The invention improves the stress at the supporting position of the swash plate through split type buckle connection; the precompression quantity of the variable spring is changed by adjusting the screwing mode of the guide seat threads; the angle of the swash plate body can be adjusted by moving the valve core left and right, and the control performance of the swash plate type plunger pump can be effectively improved.
Description
Technical Field
The invention belongs to the technical field of plunger pumps, and particularly relates to a novel buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method.
Background
The swash plate type axial plunger pump has the advantages of high pressure level, convenient variable control, compact structure and the like, and is more and more widely applied to the fields of petrochemical industry, engineering machinery, aerospace and the like. The swash plate is used as a key part for realizing variable control, and the optimized design of the structure of the swash plate has important significance for improving the performance index of the swash plate type axial plunger pump. Because the inner space of the plunger pump shell is limited, the traditional integrated swash plate structure has the problems of complex processing technology, higher installation, debugging and assembly difficulty, bad local structure stress condition and the like, and the reliability and the service life of the swash plate type axial plunger pump are greatly influenced.
Disclosure of Invention
The invention provides a novel buckle type split plunger pump swash plate variable adjusting mechanism and an adjusting method, aiming at overcoming the defects of the traditional integrated swash plate structure.
The purpose of the invention is realized by the following technical scheme: a novel buckle type split plunger pump swash plate variable adjusting mechanism is used for adjusting the initial inclination angle of a swash plate body and comprises a buckle connecting seat, a hinged connecting rod, a variable adjusting guide seat, a variable spring, a variable valve core, a valve sleeve and a spring catch;
the periphery of the oblique disc body is provided with a plane as a mounting surface, and the plane is provided with a rectangular protrusion; the cross section of the buckle connecting seat is L-shaped, a threaded hole is formed in one plane and fixedly connected with the end face of the swash plate body through a screw, an installation groove matched with the rectangular protrusion is formed in the other plane, the rectangular protrusion of the swash plate body is clamped in the installation groove, stress at the supporting position of the swash plate is improved through split type buckle connection, the installation space in the shell is saved, and the structure is compact;
the buckle connecting seat is fixedly connected with the swash plate body; one end of the hinged connecting rod is hinged with the buckle connecting seat, and the other end of the hinged connecting rod is hinged with the variable adjusting guide seat; the valve sleeve is arranged in the plunger pump shell, and the front end of the valve sleeve is provided with a spring catch; one end of the variable valve core is in threaded connection with the variable adjusting guide seat, and the other end of the variable valve core is arranged in the valve sleeve; the variable spring is sleeved on the variable valve core, one end of the variable spring is abutted against the variable adjusting guide seat, and the other end of the variable spring is abutted against the spring retaining sheet;
the variable valve core is provided with two control cavities; the valve sleeve is provided with two oil holes which are respectively communicated with two control oil ports on a plunger pump shell, high-pressure control oil and low-pressure control oil are introduced into two control cavities of the variable valve element through the two control oil ports on the plunger pump shell, and the variable valve element is moved left and right to push the swash plate body to swing around a central shaft to realize variable adjustment.
Furthermore, the variable regulation guide seat is provided with a threaded hole, and one end of the variable valve core extends into the threaded hole and is in threaded connection with the variable regulation guide seat.
Furthermore, one end of the hinged connecting rod is hinged with the buckle connecting seat through a cylindrical pin, and the other end of the hinged connecting rod is connected with the variable regulation guide seat ball dumpling.
Furthermore, an O-shaped sealing ring is adopted between the valve sleeve and the plunger pump shell to realize radial sealing, and the two sides of the O-shaped sealing ring are matched with the valve sleeve through a retaining ring, so that the structure of the valve sleeve can be effectively improved, and the processing difficulty of the valve sleeve is reduced.
Furthermore, the variable adjusting guide seat is pushed to move left and right by the left and right movement of the variable valve core, so that the hinged connecting rod is driven to rotate, and finally the inclination angle of the inclined disc body is adjusted.
Furthermore, the precompression quantity of the variable spring is controlled through the relative displacement between the variable valve core and the variable adjusting guide seat, so that the initial variable control characteristic is changed, and the control performance of the swash plate type plunger pump is improved.
A novel variable adjusting method for a buckle type split plunger pump swash plate comprises the following steps:
oil is introduced into the two control cavities of the variable valve core through the two control oil ports on the shell of the plunger pump, and the variable valve core horizontally moves under the action of pressure in the horizontal direction due to different oil pressures of the two cavities;
the variable valve core is connected with the variable adjusting guide seat through threads, and the variable adjusting guide seat moves horizontally under the pushing of the variable valve core;
the variable regulation guide seat is connected with the hinged connecting rod through a spherical hinge, and the hinged connecting rod deflects under the pushing of the variable regulation guide seat;
the hinged connecting rod is connected with the buckle connecting seat through a pin, and the buckle connecting seat rotates around the pin under the driving of the hinged connecting rod;
the buckle connecting seat is fixedly connected with the swash plate body, and the swash plate body and the buckle connecting seat move together to realize the adjustment of the initial inclination angle of the swash plate body.
The invention has the beneficial effects that: the stress state of the variable swash plate is improved, and the processing technology and the installation and debugging difficulty of the variable drive structure of the swash plate are reduced; the precompression quantity is adjusted through the thread length of the variable valve core and the variable adjusting guide seat to change the initial variable control characteristic, so that the variable control performance of the plunger pump is improved; the method specifically comprises the following steps:
1. the stress at the supporting position of the swash plate is improved through split type buckle connection;
2. the split modular structure saves the installation space in the shell and has compact structure;
3. the pre-compression amount of the variable spring is changed by adjusting the screwing-in mode of the guide seat threads, so that the operation is simple and convenient;
4. the angle of the swash plate body can be adjusted by moving the valve element left and right, the structure is simple, and the control performance of the swash plate type plunger pump can be effectively improved.
Drawings
FIG. 1 is a partial cross-sectional view of a variable displacement mechanism for a swash plate of a plunger pump mounted within a housing of the plunger pump;
FIG. 2 is a view of the installation of the latch connecting seat and the swash plate body;
FIG. 3 is a view of the structure of the buckle connection seat;
FIG. 4 is a schematic view of a variable spool and sleeve connection;
in the figure, 1-plunger pump shell, 2-swash plate body, 3-buckle connecting seat, 4-hinged connecting rod, 5-variable adjusting guide seat, 6-variable spring, 7-variable valve core, 8-valve sleeve, 9-spring baffle, 10-retainer ring, 11-O-shaped sealing ring, P1-first control oil port, and P2-second control oil port.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1, the novel buckle type split plunger pump swash plate variable adjustment mechanism provided by the invention comprises a swash plate body 2, a buckle connecting seat 3, a hinged connecting rod 4, a variable adjustment guide seat 5, a variable spring 6, a variable valve core 7, a valve sleeve 8, a spring catch 9, a retainer ring 10 and an O-shaped sealing ring 11;
the swash plate body 2 is arranged at a bearing seat of the plunger pump shell 1 through deep groove ball bearings at trunnions at two ends;
the buckle connecting seat 3 is fixedly connected with the inclined disc body 2; the preferred structure shown in fig. 2 and 3 can be adopted, specifically: the periphery of the oblique disc body 2 is provided with a plane as a mounting surface, and the plane is provided with a rectangular protrusion; the cross section of buckle connecting seat 3 is L shape, and it has two screw holes to open on the plane, through the terminal surface fixed connection of screw and sloping cam plate body 2, has the mounting groove that matches with the rectangle is protruding on another plane, and the rectangle of sloping cam plate body 2 is protruding to be blocked in the mounting groove, improves sloping cam plate support position department atress through split type buckle connection.
One end of the hinged connecting rod 4 is hinged with the buckle connecting seat 3 through a cylindrical pin, and the other end of the hinged connecting rod is connected with the variable adjusting guide seat 5 for ball dumplings;
the valve sleeve 8 is arranged in the plunger pump shell 1, and the front end of the valve sleeve 8 is provided with a spring catch;
one end of the variable valve core 7 is in threaded connection with the variable adjusting guide seat 5, and the other end of the variable valve core is arranged in the valve sleeve 8; the variable spring 6 is sleeved on the variable valve core 7, one end of the variable spring is abutted against the variable adjusting guide seat 5, and the other end of the variable spring is abutted against the spring catch 9; the precompression amount of the variable spring 6 is controlled by the relative displacement between the variable spool 7 and the variable adjustment guide holder 5;
one preferred connection is: the variable adjusting guide seat 5 is provided with a threaded hole, and one end of the variable valve core 7 extends into the threaded hole and is in threaded connection with the variable adjusting guide seat 5.
Open on the valve barrel 8 shown has two oilholes, respectively with plunger pump shell 1 on two control hydraulic fluid ports intercommunication, through plunger pump shell 1 on two control hydraulic fluid ports: the first control oil port P1 and the second control oil port P2 introduce high-low pressure control oil into two control cavities of the variable valve core 7, and the variable valve core 7 moves left and right to push the swash plate body 2 to swing around a central shaft to realize variable.
The mechanism of the invention has the following specific working process:
(1) oil is introduced into the two oil chambers through the first control oil port P1 and the second control oil port P2, and the variable valve element 7 moves horizontally under the action of pressure in the horizontal direction due to the difference of oil pressures of the two oil chambers.
(2) The variable valve core 7 is in threaded connection with the variable adjusting guide seat 5, and the variable adjusting guide seat 5 moves horizontally under the pushing of the variable valve core 7.
(3) The variable adjusting guide seat 5 is connected with the hinged connecting rod 4 through a spherical hinge, and the hinged connecting rod 4 deflects under the pushing of the variable adjusting guide seat 5.
(4) The hinged connecting rod 4 is connected with the buckle connecting seat 3 through a pin, and the buckle connecting seat 3 rotates around the pin under the driving of the hinged connecting rod 4.
(5) Be fixed connection between buckle connecting seat 3 and the sloping cam plate body 2, sloping cam plate body 2 and the joint motion of buckle connecting seat 3 realize the regulation of 2 angles of sloping cam plate body.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but encompasses equivalent technical means as would be appreciated by those skilled in the art based on the inventive concept.
Claims (6)
1. A buckle type split plunger pump swash plate variable adjusting mechanism is used for adjusting the initial inclination angle of a swash plate body (2) and is characterized by comprising a buckle connecting seat (3), a hinged connecting rod (4), a variable adjusting guide seat (5), a variable spring (6), a variable valve core (7), a valve sleeve (8) and a spring catch (9);
the periphery of the oblique disc body (2) is provided with a plane as a mounting surface, and the plane is provided with a rectangular protrusion; the cross section of the buckle connecting seat (3) is L-shaped, a threaded hole is formed in one plane and fixedly connected with the end face of the swash plate body (2) through a screw, an installation groove matched with the rectangular protrusion is formed in the other plane, and the rectangular protrusion of the swash plate body (2) is clamped in the installation groove;
one end of the hinged connecting rod (4) is hinged with the buckle connecting seat (3), and the other end of the hinged connecting rod is hinged with the variable regulating guide seat (5); the valve sleeve (8) is arranged in the plunger pump shell (1), and the front end of the valve sleeve (8) is provided with a spring retaining sheet (9); one end of the variable valve core (7) is in threaded connection with the variable adjusting guide seat (5), and the other end of the variable valve core is arranged in the valve sleeve (8); the variable spring (6) is sleeved on the variable valve core (7), one end of the variable spring is abutted against the variable adjusting guide seat (5), and the other end of the variable spring is abutted against the spring catch (9); the variable adjusting guide seat (5) is pushed to move left and right by the left and right movement of the variable valve core (7), so that the hinged connecting rod (4) is driven to rotate, and the adjustment of the inclination angle of the inclined disc body (2) is finally realized;
the variable valve core (7) is provided with two control cavities; open on shown valve barrel (8) has two oilholes, respectively with two control hydraulic fluid ports intercommunication on the plunger pump casing (1), through two control hydraulic fluid ports on the plunger pump casing (1), introduce two control appearance chambeies of variable valve core (7) with high, low pressure control fluid, remove about variable valve core (7) and remove promotion sloping disk body (2) and realize the variable regulation round the center pin swing.
2. The buckle type split plunger pump swash plate variable adjusting mechanism of claim 1, wherein the variable adjusting guide seat (5) is provided with a threaded hole, and one end of the variable valve core (7) extends into the threaded hole and is in threaded connection with the variable adjusting guide seat (5).
3. The variable adjusting mechanism of the swash plate of the snap-in split plunger pump according to claim 1, wherein one end of the hinged connecting rod (4) is hinged with the snap-in connecting seat (3) through a cylindrical pin, and the other end is connected with the variable adjusting guide seat (5) through a ball hinge.
4. The variable adjustment mechanism of the swash plate of the snap-in split plunger pump according to claim 1, wherein the valve sleeve (8) and the plunger pump housing (1) are radially sealed by an O-shaped sealing ring (11), and two sides of the O-shaped sealing ring (11) are matched with the valve sleeve (8) through a retaining ring (10).
5. The variable adjusting mechanism of the swash plate of the snap-in type split plunger pump according to claim 1, wherein the precompression amount of the variable spring (6) is controlled by the relative displacement between the variable spool (7) and the variable adjusting guide seat (5), thereby changing the initial variable control characteristic and improving the control performance of the swash plate type plunger pump.
6. A method of variable adjustment of a swash plate of a piston pump using the mechanism of any one of claims 1 to 5, the method comprising:
oil is introduced into the two control containing cavities of the variable valve core (7) through two control oil ports on the plunger pump shell (1), and the variable valve core (7) horizontally moves under the action of pressure in the horizontal direction due to different oil pressure in the two containing cavities;
the variable valve core (7) is in threaded connection with the variable adjusting guide seat (5), and the variable adjusting guide seat (5) moves horizontally under the pushing of the variable valve core (7);
the variable adjusting guide seat (5) is connected with the hinged connecting rod (4) through a spherical hinge, and the hinged connecting rod (4) deflects under the pushing of the variable adjusting guide seat (5);
the hinged connecting rod (4) is connected with the buckle connecting seat (3) by a pin, and the buckle connecting seat (3) rotates around the pin under the drive of the hinged connecting rod (4);
fixed connection between buckle connecting seat (3) and swash plate body (2), swash plate body (2) and buckle connecting seat (3) common motion realize the regulation of swash plate body (2) initial inclination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303739.8A CN108317118B (en) | 2018-04-03 | 2018-04-03 | Buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810303739.8A CN108317118B (en) | 2018-04-03 | 2018-04-03 | Buckle type split plunger pump swash plate variable adjusting mechanism and adjusting method |
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| Publication Number | Publication Date |
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| CN108317118A CN108317118A (en) | 2018-07-24 |
| CN108317118B true CN108317118B (en) | 2021-04-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109340219A (en) * | 2018-08-25 | 2019-02-15 | 江苏金陵智造研究院有限公司 | Highly integrated hydraulic power unit |
| CN109611304B (en) * | 2018-11-21 | 2020-04-28 | 中国航发西安动力控制科技有限公司 | Swash plate swing angle control mechanism of plunger pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208057562U (en) * | 2018-04-03 | 2018-11-06 | 浙江大学 | A kind of novel clamp button separated column plug pump swash plate variable regulating mechanism |
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| JP6013768B2 (en) * | 2012-04-25 | 2016-10-25 | サンデンホールディングス株式会社 | Variable capacity compressor and manufacturing method thereof |
| US20150337824A1 (en) * | 2012-12-28 | 2015-11-26 | Sanden Holdings Corporation | Swash plate type compressor |
| DE102015206716A1 (en) * | 2015-04-15 | 2016-10-20 | Robert Bosch Gmbh | Swash plate machine |
| CN106438255B (en) * | 2016-10-28 | 2018-08-07 | 浙江大学 | Coaxial homonymy compact variant structural suitable for two-way change displacement plunger pump |
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| CN208057562U (en) * | 2018-04-03 | 2018-11-06 | 浙江大学 | A kind of novel clamp button separated column plug pump swash plate variable regulating mechanism |
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