CN101358585B - Oblique crankshaft Variable plunger pump - Google Patents
Oblique crankshaft Variable plunger pump Download PDFInfo
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- CN101358585B CN101358585B CN2008101969074A CN200810196907A CN101358585B CN 101358585 B CN101358585 B CN 101358585B CN 2008101969074 A CN2008101969074 A CN 2008101969074A CN 200810196907 A CN200810196907 A CN 200810196907A CN 101358585 B CN101358585 B CN 101358585B
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Abstract
The invention discloses a variable piston pump with an inclined crankshaft which includes a pump body; the end surfaces of the pump body are connected with the end covers; a transmission shaft penetrates the end covers of the pump body and are sealed with the end covers; piston devices are respectively arranged on the radical direction of the circle of the inner edge of the pump body; the incline crankshaft is arranged on the coaxial direction in the pump body; the incline crankshaft consists of at least three sections and is provided with a front section as well as a back section the axes of which are concentric; the crossed incline shaft section of the axes of the front section and the back section is arranged between the front section and the back section; the included angle of the axis of the incline shaft section and the front section as well as the back section is less than 25 degrees; wherein, one section of the incline crankshaft is a slide connection section and is connected with the transmission shaft in a sliding way; the other section of the incline crankshaft is a variable connection section and is connected with a variable adjusting device; the middle section of the incline crankshaft is the incline shaft section; a wobbler is arranged on the inclined shaft section; the circle of the wobbler is connected with the bottom part of the piston device. No flow distribution devices are arranged in the pump body of the variable piston pump with an incline crankshaft; simultaneously the pressure oil loss is reduced as no flow distribution devices are arranged; the variable range is large; the operation is convenient; rolling friction can be adopted on transmitting a main power, thus reducing a friction and improving the transmission efficiency. The invention relates to a completely novel hydraulic power device.
Description
Technical field
The invention belongs to the hydraulic power original paper, be specifically related to a kind of Variable plunger pump.
Background technique
In radial Variable plunger pump and the inclined disc type axial deflection pump structure axial flow distribution device is arranged at present, as CN200720031562.8, form by housing, pump cover, pintle, transmission shaft, rotor, stator, plunger, piston shoes, limited valve and variable control valve, structures such as the inner pintle of this pump, rotor, stator are comparatively complicated, the pressure loss is bigger, the piston shoes and the frictional loss between the swash plate of inclined disc type axial deflection pump simultaneously is bigger, and promptly the frictional loss of main transmission is bigger.Therefore the maintenance processed complex, the oil that have the radial Variable plunger pump of axial flow distribution device decrease bigger.
Summary of the invention
The object of the present invention is to provide a kind of little oblique crankshaft Variable plunger pump of frictional loss that does not have the flow distribution apparatus main transmission, to address the above problem.
Technological scheme of the present invention is: it comprises the pump housing, pump housing end face connects first end cap, the pump housing the other end connects pump cover, transmission shaft passes first end cap of the pump housing and sealing with it, along circumference piston apparatus is set respectively radially in the pump housing, and pump body inner shaft is to establishing oblique bent axle, tiltedly bent axle has three sections formations, having two sections of the concentric front and back of axis, is and the inclined shaft section of the two sections axes intersect in front and back that the axis angle that the axis of inclined shaft section and front and back are two sections is not more than 25 ° between two sections of the front and back; Wherein tiltedly the leading portion of bent axle is slidingly connected for the section of being slidingly connected and transmission shaft; Tiltedly the back segment of bent axle is a variable linkage section link variable controlling device; Tiltedly the intermediate section of bent axle is the inclined shaft section, inclined shaft Duan Shangshe eccentric, and the eccentric circumference is connected with the bottom of piston apparatus.
The eccentric of described inclined shaft Duan Shangshe comprises the oblique cover that is enclosed within on the inclined shaft section, tiltedly establishes spring bearing on the excircle of cover, establishes the bearing frame on the spring bearing outer ring, connects the connecting rod base of piston apparatus on the bearing frame.
The described section of being slidingly connected is established trepanning, establishes first sliding keyway on the cover hole wall, establishes connecting key on the transmission shaft, and connecting key is connected with first sliding keyway; The section of being slidingly connected goes up and connects clutch shaft bearing, connects first supporting sleeve on the clutch shaft bearing, and pump housing inwall is offered second sliding keyway, establishes key on first supporting sleeve and is connected with second sliding keyway that pump housing inwall is offered; Connect second bearing on the described variable linkage section, connect second supporting sleeve on second bearing, the pump cover inwall is offered the 3rd sliding keyway, establishes key on second supporting sleeve and is connected with the 3rd sliding keyway that the pump cover inwall is offered; Described variable controlling device comprises variable adjusting oil cylinder, and the piston rod that variable is regulated oil cylinder axially is connected with the variable linkage section of oblique bent axle.
Described variable controlling device comprises variable adjusting oil cylinder, and the piston rod that variable is regulated oil cylinder axially is connected with the variable linkage section of oblique bent axle.
Do not have flow distribution apparatus in this oblique crankshaft Variable plunger pump pump housing, structure is comparatively simplified, and does not have the requirement of the installation and processing of flow distribution apparatus, thereby has reduced the later stage and used the difficulty of keeping in repair; Owing to there is not flow distribution apparatus, reduced and pressed the oil loss simultaneously; Range of variables is big, and is easy to operate, and the active force transmission can be adopted rolling friction, and the power of reducing friction improves transmission efficiency.It is a kind of brand-new hydraulic power unit.
Description of drawings
Fig. 1 oblique crankshaft Variable plunger pump structural representation.
Fig. 2 oblique crankshaft Variable plunger pump profile schematic representation.
Fig. 3 variable is regulated oil cylinder piston two chamber Decompression valves schematic representation.
C is to partial schematic diagram among Fig. 4 Fig. 1.
B-B is to pump housing oil suction annular groove and pressure oil ring groove cross-sectional schematic among Fig. 5 Fig. 1.
D-D is to pump housing piston oil-sucking hole and pressure oilhole schematic representation among Fig. 6 Fig. 5.
Embodiment
Present embodiment is used for the explanation to technical solution of the present invention, and protection scope of the present invention is not limited to the description of following structure.
As shown in Figure 2, the oblique crankshaft Variable plunger pump profile comprises and establishes the pump housing 2 on the base 1, and the pump housing 2 is provided with the inlet port 3 of hydraulic oil turnover and presses hydraulic fluid port 4.The pump housing 2 is connected with pump cover 15, and variable controlling device 5 is connected with pump cover 15 in the present embodiment, and the other end of the pump housing 2 connects transmission shaft 6.The oil inlet hole 7 of variable controlling device 5 can be connected with variable control valve 9 with oil outlet 8.
The oblique crankshaft Variable plunger pump internal structure as shown in Figure 1, the pump housing 2 end faces connect end cap 10, transmission shaft 6 passes the end cap 10 of the pump housing and sealing with it, transmission shaft 6 is supported by bearing 11, establishes connecting key 12 on 6 of the transmission shafts.The inner chamber of the pump housing 2 is provided with oblique bent axle, in the present embodiment tiltedly bent axle constitute by three sections, have two sections of the concentric front and back of axis, be and the inclined shaft section of the two sections axes intersect in front and back that the axis angle that the axis of inclined shaft section and front and back are two sections is not more than 25 ° between two sections of the front and back; Wherein tiltedly be the section of being slidingly connected 31 the last period of bent axle, is used for being slidingly connected with transmission shaft; Tiltedly back one section of bent axle be variable linkage section 32, is used for the link variable controlling device, and what intersect with parallel shaft part axis between above-mentioned two sections parallel axes axle two-parallel axis sections is inclined shaft section 33.The cross section of inclined shaft section 33 is a polygonal, and the cross section of inclined shaft section 33 is a Hexagon in the present embodiment.Along circumference piston apparatus 20 is set respectively radially in the pump housing.
Piston apparatus 20 comprises the piston cavity 21 that is made of the pump housing 2, and the piston 22 in the piston cavity 21 is established seal arrangement 23 between piston 22 and piston cavity 21 walls.Piston 22 is connected with ball head connecting rod 24, and ball head connecting rod 24 is connected with connecting rod base 25.The oil-feed of piston apparatus 20, fuel-displaced structure as shown in Figure 5, offer oil suction annular groove 40 on the wall of the piston cavity that promptly constitutes by the pump housing 2 on the pump housing 2 and press oil ring groove 41, oil suction annular groove 40 communicates with the oil-sucking hole 42 of (in the wall of piston cavity) in the pump housing, press oil ring groove 41 to communicate with the pressure oilhole 43 of (in the wall of piston cavity) in the pump housing, establish in oil-sucking hole 42 and the pressure oilhole 43 one-way valve 44 and one-way valve 49 (as shown in Figure 6) are arranged respectively, oil-sucking hole 42 and pressure oilhole 43 all communicate with the piston cavity 21 of piston apparatus, oil suction annular groove 40 and press oil ring groove divide 41 not with the pump housing on the inlet port 45 offered and press hydraulic fluid port 46 to communicate, inlet port 45 and pressure hydraulic fluid port 46 are located on the pump housing on the connecting end cover plate 47 in the present embodiment.Be provided with sealing gasket 48 between the connecting end cover plate 47 and the pump housing.
The eccentric that connects on the inclined shaft section 33, eccentric is connected with piston apparatus 20.Concrete eccentric comprises the oblique cover 110 that is enclosed within on the inclined shaft section, tiltedly cover 110 is tiltedly overlapped by the open type that two and half oblique collar amalgamations constitute, the interior loop-shaped of the formation of the two and half oblique collars and the sectional shape of inclined shaft section 33 coupling, the outer ring of the formation of the two and half oblique collars is circle, tiltedly establish spring bearing 111 on the circumference of cover 110 outer rings, be provided with two support bearings in the present embodiment.Spring bearing is established bearing on 111 outer rings, establishes stiffening ring 114 between two spring bearings 111; Bearing axially connects seat rings 112,113 by two and forms in the present embodiment, establishes the attachment hole 115,116 by the connecting rod base of piston apparatus on two seat rings 112,113, and connecting rod base 25 is located in the attachment hole 115,116.Connecting rod base 25 is gapped with attachment hole 115,116, can make connecting rod base 25 in attachment hole 115,116 along circumference at small angle oscillation, avoid ball head connecting rod 24 move back and forth stuck when rotating simultaneously.(shown in Figure 4).
The tiltedly section of being slidingly connected 31 of bent axle and being connected to of transmission shaft 6: the section of being slidingly connected 31 is established trepanning 50, establishes sliding keyway 51 on trepanning 50 walls, and the connecting key 12 on the transmission shaft 6 is connected with sliding keyway 51; Connection bearing 52 and bearing limit stoper 53 on the section of being slidingly connected 31 connect supporting sleeve 54 on the bearing 52, pump housing inwall is offered sliding keyway 55, establishes key 56 on the supporting sleeve 54 and is connected with the sliding keyway 55 that pump housing inwall is offered.
Connection bearing 60 and bearing limit stoper 61 on the variable linkage section 32 connect supporting sleeve 62 on the bearing 60, pump cover 15 inwalls are offered sliding keyway 63, establish key 64 on the supporting sleeve 63 and are connected with the sliding keyway 63 that pump cover 15 inwalls are offered.
Variable linkage section 32 is connected with variable controlling device 5.The variable controlling device comprises variable adjusting oil cylinder, and the piston rod that amount is regulated oil cylinder axially is connected with the variable linkage section of oblique bent axle.Variable adjusting oil cylinder comprises the piston cylinder cylinder body 70 that is connected with the pump housing in the present embodiment, the cylinder cap 71 that is connected with piston cylinder cylinder body 70, the piston of establishing in the piston cylinder cylinder body 70 72, the piston rod 73 that is connected with piston 72 (piston 72 is a part with piston rod 73 in the present embodiment), establish guide rod 74 on the cylinder cap 71, piston and piston rod are offered pilot hole 75, guide rod 74 is connected with pilot hole 75, guide rod 74 can be connected by slide key with pilot hole 75, makes piston and piston rod to move along guide rod 74.Tiltedly the variable linkage section of bent axle is offered attachment hole 65, the leading portion of piston rod 73 extend in the attachment hole 65, plane bearing 78 and radial bearing 76 between the leading portion of piston rod 73 and attachment hole 65 inwalls connect end cap 79 on the piston rod 73, end cap 79 is connected with attachment hole 65.
Establish the relief hole between piston two chambeies on the piston 72, establish on the relief hole on the Decompression valves 81.As shown in Figure 3, offer relief hole 80 on the piston 72, Decompression valves 81 comprises offers mounting hole 82 on the piston 72, the valve seat 83 that is connected with piston mounting hole 82 is established valve rod 84 in the mounting hole 82, valve rod 84 passes relief hole 80, can open and close relief hole, establish spring 85 between valve rod 84 and the valve seat 83, valve rod 84 comprises push rod 86 and relief hole pole shutoff 87, and push rod 86 sectional dimensions are less than relief hole pole shutoff 87 sectional dimensions.Relief hole pole shutoff 87 is closed relief hole 80 under normal state.When piston 72 motion during near an end, if this moment variable control valve 9 devices such as external control such as grade still also in work, piston 72 motion that continues, push rod 86 contacts with pump housing inwall, push rod 86 will promote 87 motions of relief hole pole shutoff relief hole 80 will be opened, and make piston two chambeies communicate, thus pressure release.
Claims (8)
1. oblique crankshaft Variable plunger pump, it comprises the pump housing, pump housing end face connects first end cap, and the pump housing the other end connects pump cover, and transmission shaft passes first end cap of the pump housing and sealing with it, along circumference piston apparatus is set respectively radially in the pump housing, it is characterized in that pump body inner shaft to establishing oblique bent axle, tiltedly bent axle has three sections formations, has two sections of the concentric front and back of axis, before and after be and the inclined shaft section of the two sections axes intersect in front and back that the axis angle that the axis of inclined shaft section and front and back are two sections is less than 25 ° between two sections; Wherein tiltedly the leading portion of bent axle is the section of being slidingly connected, and the section of being slidingly connected is slidingly connected with transmission shaft; Tiltedly the back segment of bent axle is the variable linkage section, variable linkage section link variable controlling device; Tiltedly the intermediate section of bent axle is the inclined shaft section, inclined shaft Duan Shangshe eccentric, and the eccentric circumference is connected with the bottom of piston apparatus; The described section of being slidingly connected is established trepanning, establishes first sliding keyway on the cover hole wall, establishes connecting key on the transmission shaft, and connecting key is connected with first sliding keyway; The section of being slidingly connected goes up and connects clutch shaft bearing, connects first supporting sleeve on the clutch shaft bearing, and pump housing inwall is offered second sliding keyway, establishes key on first supporting sleeve and is connected with second sliding keyway that pump housing inwall is offered; Connect second bearing on the described variable linkage section, connect second supporting sleeve on second bearing, the pump cover inwall is offered the 3rd sliding keyway, establishes key on second supporting sleeve and is connected with the 3rd sliding keyway that the pump cover inwall is offered; Described variable controlling device comprises variable adjusting oil cylinder, and the piston rod that variable is regulated oil cylinder axially is connected with the variable linkage section of oblique bent axle.
2. oblique crankshaft Variable plunger pump as claimed in claim 1 or 2, the eccentric that it is characterized in that described inclined shaft Duan Shangshe comprises the oblique cover that is enclosed within on the inclined shaft section, tiltedly establish spring bearing on the excircle of cover, spring bearing is established bearing on the outer ring, connects the connecting rod base of piston apparatus on the bearing.
3. as oblique crankshaft Variable plunger pump as described in the claim 2, it is characterized in that described oblique cover is tiltedly overlapped by the open type that two and half oblique collar amalgamations constitute.
4. oblique crankshaft Variable plunger pump according to claim 1, it is characterized in that described variable adjusting oil cylinder comprises the piston cylinder cylinder body that is connected with the pump housing, the cylinder cap that is connected with piston cylinder, the piston of establishing in the piston cylinder cylinder body, the piston rod that is connected with piston, establish the guide and limit bar on the cylinder cap, piston and/or piston rod are offered the guide and limit hole, and the guide and limit bar is connected with the guide and limit hole.
5. as oblique crankshaft Variable plunger pump as described in the claim 4, it is characterized in that the variable linkage section of oblique bent axle is offered attachment hole, establish bearing between piston rod and the attachment hole, connect second end cap on the piston rod, end cap is connected with attachment hole.
6. as oblique crankshaft Variable plunger pump as described in the claim 4, it is characterized in that establishing on the described piston relief hole between piston two chambeies, establish Decompression valves on the relief hole.
7. as oblique crankshaft Variable plunger pump as described in the claim 6, it is characterized in that described Decompression valves comprises offers mounting hole on the piston, the valve seat that is connected with the piston mounting hole, establish valve rod in the mounting hole, valve rod passes relief hole, can open and close relief hole, establishes spring between valve rod and the valve seat, described valve rod comprises push rod and relief hole pole shutoff, and the push rod sectional dimension is less than relief hole pole shutoff sectional dimension.
8. oblique crankshaft Variable plunger pump according to claim 1, it is characterized in that offering on the described pump housing oil suction annular groove and press oil ring groove, oil-sucking hole in oil suction annular groove and the pump housing communicates, press the interior pressure oilhole of the oil ring groove and the pump housing to communicate, be provided with one-way valve in oil-sucking hole and the pressure oilhole, oil-sucking hole and press oilhole all to communicate with the piston cavity of piston apparatus, the oil suction annular groove and press oil ring groove respectively with the pump housing on the inlet port offered communicate with the pressure hydraulic fluid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101969074A CN101358585B (en) | 2008-09-11 | 2008-09-11 | Oblique crankshaft Variable plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101969074A CN101358585B (en) | 2008-09-11 | 2008-09-11 | Oblique crankshaft Variable plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101358585A CN101358585A (en) | 2009-02-04 |
| CN101358585B true CN101358585B (en) | 2011-11-16 |
Family
ID=40331147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101969074A Expired - Fee Related CN101358585B (en) | 2008-09-11 | 2008-09-11 | Oblique crankshaft Variable plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101358585B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305201B (en) * | 2011-08-17 | 2013-06-05 | 谌章堰 | High-pressure pump with star wheel and axial plunger |
| CN104895754B (en) * | 2015-04-07 | 2017-01-11 | 西安交通大学 | An axial plunger and radial plunger combined hydraulic pump |
| CN106870676A (en) * | 2015-12-14 | 2017-06-20 | 熵零技术逻辑工程院集团股份有限公司 | A kind of transmission system |
| CN107035639A (en) * | 2017-04-23 | 2017-08-11 | 泸州职业技术学院 | A kind of shaft orientation plunger variable pump |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103289A (en) * | 1985-05-02 | 1986-06-10 | 东北重型机械学院 | Axial plunger pump with oiling from two end-plane |
| CN2328811Y (en) * | 1997-09-23 | 1999-07-14 | 阎学富 | Electromagnetic control variable axial plunger pump |
| US6135722A (en) * | 1996-08-12 | 2000-10-24 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Positional relationship of a bearing in the shutoff member of a variable displacement compressor |
| CN2427645Y (en) * | 2000-06-26 | 2001-04-25 | 高宝山 | Super high pressure composite variable pump |
| CN2566011Y (en) * | 2002-07-05 | 2003-08-13 | 柯坚 | Low pulsating variable desplacement plunger pump |
-
2008
- 2008-09-11 CN CN2008101969074A patent/CN101358585B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85103289A (en) * | 1985-05-02 | 1986-06-10 | 东北重型机械学院 | Axial plunger pump with oiling from two end-plane |
| US6135722A (en) * | 1996-08-12 | 2000-10-24 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Positional relationship of a bearing in the shutoff member of a variable displacement compressor |
| CN2328811Y (en) * | 1997-09-23 | 1999-07-14 | 阎学富 | Electromagnetic control variable axial plunger pump |
| CN2427645Y (en) * | 2000-06-26 | 2001-04-25 | 高宝山 | Super high pressure composite variable pump |
| CN2566011Y (en) * | 2002-07-05 | 2003-08-13 | 柯坚 | Low pulsating variable desplacement plunger pump |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2003-301772A 2003.10.24 |
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| Publication number | Publication date |
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| CN101358585A (en) | 2009-02-04 |
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Granted publication date: 20111116 Termination date: 20130911 |