CN201972873U - Double-swash plate type hydraulic motor plunger pump - Google Patents
Double-swash plate type hydraulic motor plunger pump Download PDFInfo
- Publication number
- CN201972873U CN201972873U CN2011200871451U CN201120087145U CN201972873U CN 201972873 U CN201972873 U CN 201972873U CN 2011200871451 U CN2011200871451 U CN 2011200871451U CN 201120087145 U CN201120087145 U CN 201120087145U CN 201972873 U CN201972873 U CN 201972873U
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- cylinder body
- pintle
- flow distribution
- plunger pump
- plunger
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Abstract
The utility model relates to a double-swash plate type hydraulic motor plunger pump comprising a shell, a stator, a rotor, a cylinder body, a plurality of plungers, two swash plate assemblies and a flow distribution device, wherein a plurality of suction and exhaust oil ports communicated with a plunger cavity are arranged at the left side and right side of the cylinder body respectively, the flow distribution device is in clearance fit with the cylinder body, the swash plate assemblies lead the plungers to do linear reciprocating motion in the plunger cavity when the spindle of the rotor drives the cylinder body to rotate, the flow distribution device is communicated with the suction and exhaust oil ports of the cylinder body periodically, therefore, the flow distribution of the motor plunger pump is realized, and the flow distribution device can not rotate along with the spindle and is of a flow distribution shaft. Due to adoption of the flow distribution device, the integral structure of the pump is effectively simplified, the closed volume of the pump can be decreased, the volume efficiency of the motor plunger pump can be improved; and compared with the existing valve flow distribution plunger pump, the flow at a working medium outlet and inlet position of the pump cavity is not limited by the valve opening size, the flowing is more smooth, and no lagging of switching on or off the valve opening due to valve flow distribution exists.
Description
Technical field
The utility model relates to hydraulic engine plunger pump, relates in particular to a kind of diclinic dish hydraulic engine plunger pump.
Background technique
Hydraulic engine plunger pump is a kind of hydraulic power unit of new structure, its with two of drive motor, axial piston pump independently original paper become one from structure, have compact structure, efficient height, cooling is convenient and does not have advantage such as external leakage.
" diclinic moushroom valve ported axial plunger formula water hydraulic canned motorpump " (patent No. 201020105314.5) of people such as Central China University of Science and Technology Zhu blue sea application, design based on hydraulic engine plunger pump, diclinic dish axial piston pump is integrated in rotor inside, staor winding is immersed in the interior insulating oil of shielding mantle cavity, and its working medium is sea (light) water.The flow distribution apparatus of this diclinic moushroom valve ported axial plunger formula water hydraulic canned motorpump adopts that corresponding on cylinder body what be provided with is the suction valve and the delivery valve of spool with the ceramic ball.
But because it adopts ceramic ball is that the valve flow mode of spool makes that the dead volume in the pump cylinder is excessive, reduced the volumetric efficiency of pump, cause place, the interior working medium gateway of this pump cavity inflow-rate of water turbine less than normal simultaneously, and the frequent switching of valve port cause easily generation noise of the frequent bump of ceramic ball.
The model utility content
The utility model provides a kind of diclinic dish hydraulic engine plunger pump that adopts specific flow distribution apparatus at the problem that existing diclinic dish hydraulic engine plunger pump exists.
The utility model provides a kind of diclinic dish hydraulic engine plunger pump, comprise rotor, cylinder body, a plurality of plungers, swash plate assembly and flow distribution apparatus, its rotor and cylinder body are structure as a whole, the cylinder body both sides are symmetrically distributed with a plurality of plungers respectively, each plunger all is connected with the swash plate assembly, a plurality of suction hydraulic fluid ports that cylinder interior is provided with a plurality of plunger cavities and communicates with plunger cavity, drive in the rotation of cylinder body at described rotor, described swash plate assembly does reciprocating linear motion plunger in plunger cavity, flow distribution apparatus periodically is communicated with the suction hydraulic fluid port of cylinder body, realize the flow of engine plunger pump, it is characterized in that, described flow distribution apparatus and cylinder body Spielpassung, in the rotation process of described rotor, flow distribution apparatus does not rotate with rotor.
Further, described cylinder body has axial center hole, and described flow distribution apparatus is a pintle, and pintle is arranged in the axial center hole of cylinder body.
Further, described axial center hole is one, described pintle is first pintle, first pintle is a cylindrical shape, its inside is provided with a dividing plate, and the dividing plate both sides are not connected, respectively is provided with two flow grooves on the cylinder barrel of dividing plate both sides, one of them flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil inlet end, and another flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil outlet end.
Further, the both sides of each flow groove are provided with balancing slit, and the flow groove communicates by the runner on first pintle with balancing slit.
Further, the oil outlet end of described first pintle has a round platform projection, and the round platform projection is connected with bearing cap by seal ring, circumferential locating stud, and wherein the round platform projection is a sphere with the fitting surface of bearing cap.
Further, described cylinder body has two not connected axial center holes, described pintle is second pintle, second pintle is a cylindrical shape, cylinder one end is fixed with one and has the card of single waist shaped hole, cylinder communicates with waist shaped hole, and waist shaped hole can communicate with plunger cavity by the suction hydraulic fluid port of cylinder body, in relative two axial center holes that place cylinder body of two second identical pintle cards.
Further, the thick end of the waist shaped hole of filler opening end second pintle and filler opening end swash plate is positioned at the same side of cylinder body longitudinal center line, and the thin end of the waist shaped hole of oil outlet end second pintle and oil outlet end swash plate is positioned at the same side of cylinder body longitudinal center line.
Further, the shaft axis of the shaft axis of the described second pintle cylindrical section and card departs from.
Compare with existing diclinic dish hydraulic engine plunger pump, the utlity model has following outstanding advantage:
1. the flow distribution apparatus that diclinic dish hydraulic engine plunger pump described in the utility model adopts has effectively been simplified the pump overall structure, has reduced the dead volume of pump, has improved the volumetric efficiency of engine plunger pump.
2. the flow distribution apparatus that diclinic dish hydraulic engine plunger pump described in the utility model adopts has saved suction valve and the delivery valve in the valve flow plunger pump, make place, the interior working medium gateway of pump cavity inflow-rate of water turbine no longer be subjected to the restriction of valve port size, it is more smooth and easy to circulate, and the valve port that has not had the valve flow to be brought opens and closes retardation phenomenon.
3. the flow distribution apparatus that diclinic dish hydraulic engine plunger pump described in the utility model adopts has reduced the circulating resistance of working medium in pump cavity, alleviated the plunger pump cylinder body induced pressure, mechanical shock noise and the fluid impact noise having removed opening of valves and brought when closing.
The flow distribution apparatus that 4 diclinic dish hydraulic engine plunger pumps described in the utility model adopt, than the common single thrust plate of realizing flow, two pintles of its symmetry are arranged so that the stressed balance that obtains of pump cylinder, effectively reduce the induced pressure of pump cylinder.
Description of drawings
Fig. 1 axle flow diclinic dish hydraulic engine plunger pump plan view
Fig. 2 pintle three-view diagram
Fig. 3 pintle right side matching chart
Fig. 4 dish-dish flow diclinic dish hydraulic engine plunger pump plan view
Fig. 5 port plate structure figure
Each label implication among the figure: the special envelope of the circumferential locating stud of the paired roller bearing 7-of 1-shell 2-stator core 3-winding 4-cage rotor 5-locating stud 6-cylinder body 8-center ball pivot 9-swash plate 10-piston shoes 11-backhaul dish 12-first end cap 13-retracting spring spare 14-plunger 15-pintle 16-second end cap 17-bearing plate 18-bearing play adjusting screw 19-20-Si seal ring 21-bearing cap 22-oil outlet outer housing cover 23-stator fixed cover.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Diclinic dish hydraulic engine plunger pump described in the utility model as shown in Figure 1, stator core 2 is installed in the shell 1, stator core 2 is embedded with winding 3, and stator fixed cover 23 is installed in the shell 1 axial restraint is carried out in stator core 2, prevents that stator core 2 from moving axially.Cage rotor 4 is positioned at stator core 2 inside, and cage rotor 4 and cylinder body 7 are linked together rotation by welding.Cylinder body 7 is axially symmetric structures, it axially has center hole, its longitudinal center line is as the central rotating shaft of cage rotor 4, cylinder body 7 is bearing in respectively on first end cap 12 and second end cap 16 by paired roller bearing 6, oil inlet end roller bearing 6 withstands bearing inner race by the cylinder body 7 and first end cap 12 and axially locating is realized in the outer ring, oil outlet end roller bearing inner ring is withstood by cylinder body 7, its outer ring is pushed down by bearing plate 17, and carries out the gap adjustment of 17 of bearing outer ring and bearing plates by bearing play adjusting screw 18.Have filler opening on first end cap 12, have oil outlet on second end cap 16.Cylinder body 7 both sides are symmetrically distributed with a plurality of plungers 14 respectively, and it is right that the plunger 14 of per two symmetries constitutes a plunger, and wherein plunger 14 can be 22, and promptly 11 plungers are right, but the utility model does not limit number of plungers.Cylinder body 7 inside are provided with a plurality of plunger cavities, plunger 14 can be done linear reciprocating motion in plunger cavity, cylinder body 7 inside also are provided with a plurality of suction hydraulic fluid ports that communicate with plunger cavity, each plunger 14 is fitted by piston shoes 10, backhaul dish 11 and ball pivot 8 and swash plate 9, ball pivot 8 withstands backhaul dish 11 under the active force of retracting spring spare 13, swash plate 9 is circumferentially located by locating stud 5, prevents that swash plate from circumferentially rotating.
As shown in Figure 2, described first pintle 15 is one cylindric, its inside is provided with a dividing plate, the dividing plate both sides are not connected, respectively be provided with two flow grooves on the cylinder barrel of dividing plate both sides, one of them flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil inlet end, and another flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil outlet end.Simultaneously be provided with balancing slit in the both sides of flow groove, the flow groove communicates by the runner on first pintle 15 with balancing slit, realizes first pressure balance of pintle 15 in assignment process.In the rotation process of described rotor main shaft, four flow grooves of first pintle 15 periodically are communicated with the suction hydraulic fluid port of cylinder body 7 respectively, realize flow.
As shown in Figure 3, the oil outlet end of first pintle 15 is a round platform projection, the axial and circumferential of realizing first pintle 15 that act as of round platform projection are located, the fitting surface of round platform and bearing cap 21 is a sphere, this structure is circumferentially guaranteeing that axle head can not bear more tangential force in 15 rotations of locating stud 19 qualifications first pintle, and this makes the structure of the pintle 15 of winning more reliable and more stable.
For the diclinic dish hydraulic engine plunger pump that adopts first pintle 15, its working procedure is as follows: when motor windings 3 is connected power supply, the rotating magnetic field that motor windings 3 produces produces electromagnetic torque on cage rotor 4, the cylinder body 7 and the cage rotor 4 that connect by welding rotate together, cylinder body drives plunger 14 and rotates, under the effect of ball pivot 8, backhaul dish 11, plunger 14 does reciprocating linear motion in the plunger cavity of cylinder body 7.Because flow groove on first pintle 15 and the suction hydraulic fluid port in the cylinder body 7 are periodically connected, engine plunger pump sees through the hydraulic oil of oil absorbing end by the right linear reciprocating motion of plunger the flow groove suction plunger cavity of first pintle, 15 dividing plates, one side, and be depressed into the flow groove of first pintle, 15 dividing plate opposite sides from plunger cavity, finish the oil suction of electric-motor pump plunger and press oily process, be formed with the hydraulic oil of certain pressure, offer follow-up hydraulic equipment.
Pintle described in the utility model can also adopt other structures, Figure 4 shows that the diclinic dish hydraulic engine plunger pump that adopts second pintle, its overall structure and shown in Figure 1 basic identical, difference is, the axial center hole of cylinder body 7b is not punched, and the center portion is solid, and promptly respectively there is an axial center hole at cylinder body 7b two ends, two axial center holes are blind hole, and two holes are not connected.
As shown in Figure 5, second pintle is a cylindrical shape, and the one end is connected with one and has the card of single waist shaped hole, and cylinder communicates with waist shaped hole, and waist shaped hole can communicate with plunger cavity by the suction hydraulic fluid port of cylinder body 7b.Such structure can realize that working medium enters cylinder or sees through waist shaped hole from cylinder from waist shaped hole and enter the process of circulation in the pump housing.The shaft axis of cylinder and the shaft axis of card depart from simultaneously, and design like this can realize circumferentially fixing second pintle by outside end cap.
The card of two second identical pintles is relative, is assemblied in two axial center holes at cylinder body two ends, and the center hole circumferential and cylinder body 7b of second pintle is a Spielpassung, and card and cylinder body 7b center portion also are Spielpassung.The thick end of the waist shaped hole of the filler opening end second pintle 25b and filler opening end swash plate is positioned at the same side of cylinder body longitudinal center line, and the thin end of the waist shaped hole of the oil outlet end second pintle 26b and oil outlet end swash plate is positioned at the same side of cylinder body longitudinal center line.The cylindrical section outside of two second pintles is pushed down by spring 28b by end cap 24b, 27b respectively and is fixed.
For the diclinic dish hydraulic engine plunger pump that adopts second pintle, its working procedure is as follows: during the engine plunger pump running, cylinder body 7b rotation, and filler opening end second pintle 25b and oil outlet end second pintle 26b maintenance are motionless, and plunger 14 does reciprocating linear motion in the plunger cavity of cylinder body 7b.When plunger during to outward movment, the suction hydraulic fluid port of cylinder body 7b filler opening end is communicated with waist shaped hole on the filler opening end second pintle 25b, suction hydraulic fluid port and the waist shaped hole on the oil outlet end second pintle 26b near the oil outlet end disconnect, the plunger cavity volume enlarges, and plunger is finished oil-absorbing process to hydraulic oil is sucked cylinder body 7b from filler opening.When plunger when moving inward, waist shaped hole on the suction hydraulic fluid port of cylinder body 7b filler opening end and the filler opening end second pintle 25b disconnects, the suction hydraulic fluid port of oil outlet end is communicated with waist shaped hole on the oil outlet end second pintle 26b, the plunger cavity volume-diminished, plunger is to extruding the oil extraction process of finishing with hydraulic oil from cylinder body 7b.
The working medium that adopts in the diclinic dish hydraulic engine plunger pump described in the utility model is not limited to above-mentioned hydraulic oil, can be the medium that water or other hydraulic pressure installation adopt.
The utility model not only is confined to above-mentioned embodiment; persons skilled in the art are according to the disclosed content of the utility model; can adopt other multiple embodiment to implement the utility model; therefore; every employing project organization of the present utility model and thinking; do some simple designs that change or change, all fall into the scope of the utility model protection.
Claims (8)
1. diclinic dish hydraulic engine plunger pump, comprise rotor, cylinder body, a plurality of plungers, swash plate assembly and flow distribution apparatus, its rotor and cylinder body are structure as a whole, the cylinder body both sides are symmetrically distributed with a plurality of plungers respectively, each plunger all is connected with the swash plate assembly, a plurality of suction hydraulic fluid ports that cylinder interior is provided with a plurality of plunger cavities and communicates with plunger cavity, drive in the rotation of cylinder body at described rotor, described swash plate assembly does reciprocating linear motion plunger in plunger cavity, flow distribution apparatus periodically is communicated with the suction hydraulic fluid port of cylinder body, realize the flow of engine plunger pump, it is characterized in that, described flow distribution apparatus and cylinder body Spielpassung, in the rotation process of described rotor, flow distribution apparatus does not rotate with rotor.
2. diclinic dish hydraulic engine plunger pump according to claim 1 is characterized in that described cylinder body has axial center hole, and described flow distribution apparatus is a pintle, and pintle is arranged in the axial center hole of cylinder body.
3. diclinic dish hydraulic engine plunger pump according to claim 2, it is characterized in that, described axial center hole is one, described pintle is first pintle, and first pintle is a cylindrical shape, and its inside is provided with a dividing plate, the dividing plate both sides are not connected, respectively be provided with two flow grooves on the cylinder barrel of dividing plate both sides, one of them flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil inlet end, and another flow groove can communicate with plunger cavity by the suction hydraulic fluid port of oil outlet end.
4. diclinic dish hydraulic engine plunger pump according to claim 3 is characterized in that the both sides of each flow groove are provided with balancing slit, and the flow groove communicates by the runner on first pintle with balancing slit.
5. diclinic dish hydraulic engine plunger pump according to claim 3, it is characterized in that, the oil outlet end of described first pintle has a round platform projection, and the round platform projection is connected with bearing cap by seal ring, circumferential locating stud, and wherein the round platform projection is a sphere with the fitting surface of bearing cap.
6. diclinic dish hydraulic engine plunger pump according to claim 2, it is characterized in that, described cylinder body has two not connected axial center holes, described pintle is second pintle, second pintle is a cylindrical shape, and cylinder one end is fixed with one and has the card of single waist shaped hole, and cylinder communicates with waist shaped hole, waist shaped hole can communicate with plunger cavity by the suction hydraulic fluid port of cylinder body, in relative two axial center holes that place cylinder body of two second identical pintle cards.
7. diclinic dish hydraulic engine plunger pump according to claim 6, it is characterized in that, the thick end of the waist shaped hole of filler opening end second pintle and filler opening end swash plate is positioned at the same side of cylinder body longitudinal center line, and the thin end of the waist shaped hole of oil outlet end second pintle and oil outlet end swash plate is positioned at the same side of cylinder body longitudinal center line.
8. diclinic dish hydraulic engine plunger pump according to claim 6 is characterized in that the shaft axis of the described second pintle cylindrical section and the shaft axis of card depart from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200871451U CN201972873U (en) | 2011-03-29 | 2011-03-29 | Double-swash plate type hydraulic motor plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200871451U CN201972873U (en) | 2011-03-29 | 2011-03-29 | Double-swash plate type hydraulic motor plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201972873U true CN201972873U (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200871451U Expired - Lifetime CN201972873U (en) | 2011-03-29 | 2011-03-29 | Double-swash plate type hydraulic motor plunger pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN201972873U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135082A (en) * | 2011-03-29 | 2011-07-27 | 华中科技大学 | Piston pump of dual-inclined-disc hydraulic motor |
| CN110332087A (en) * | 2019-07-09 | 2019-10-15 | 华中科技大学 | A kind of two inclined plate valve current allocating type plunger pump |
| CN114017277A (en) * | 2021-11-10 | 2022-02-08 | 西安交通大学 | Axial plunger pump flow distribution shaft with rotating swash plate and flow distribution method thereof |
-
2011
- 2011-03-29 CN CN2011200871451U patent/CN201972873U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135082A (en) * | 2011-03-29 | 2011-07-27 | 华中科技大学 | Piston pump of dual-inclined-disc hydraulic motor |
| CN102135082B (en) * | 2011-03-29 | 2012-07-04 | 华中科技大学 | Piston pump of dual-inclined-disc hydraulic motor |
| CN110332087A (en) * | 2019-07-09 | 2019-10-15 | 华中科技大学 | A kind of two inclined plate valve current allocating type plunger pump |
| CN110332087B (en) * | 2019-07-09 | 2024-03-19 | 华中科技大学 | Double-swash plate valve flow distribution type plunger pump |
| CN114017277A (en) * | 2021-11-10 | 2022-02-08 | 西安交通大学 | Axial plunger pump flow distribution shaft with rotating swash plate and flow distribution method thereof |
| CN114017277B (en) * | 2021-11-10 | 2022-08-05 | 西安交通大学 | Axial plunger pump flow distribution shaft with rotating swash plate and flow distribution method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20120704 |