CN101435417A - Hydraulic transformer for increasing voltage ratio regulation scope - Google Patents
Hydraulic transformer for increasing voltage ratio regulation scope Download PDFInfo
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- CN101435417A CN101435417A CNA2008101832599A CN200810183259A CN101435417A CN 101435417 A CN101435417 A CN 101435417A CN A2008101832599 A CNA2008101832599 A CN A2008101832599A CN 200810183259 A CN200810183259 A CN 200810183259A CN 101435417 A CN101435417 A CN 101435417A
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- valve plate
- spherical valve
- spherical
- cylinder body
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Abstract
The invention provides a hydraulic transformer capable of increasing the regulation range of transformation ratio. One end of a central shaft is hinged on a main shaft and the other end runs through a center of a cylinder body and is arranged in a copper sleeve at a center of a spherical end surface of a spherical valve plate. The spherical valve plate structure is adopted so that the spherical end surface of the spherical valve plate forms fit with the cylinder, and a rotating rod runs through the center of a rear end cover and is connected with the spherical valve plate through a spline. The spherical valve plate is made to rotate within a certain plus and minus angle range by rotating the rotating rod so as to adjust the transformation ratio. The spherical valve plate is designed to have a structure of notch wrap angle in different sizes, thereby realizing the purpose of changing transformation ratio in a wider range by the hydraulic transformer.
Description
Technical field
The present invention relates to hydraulic element, especially relate to a kind of hydraulic transformer that increases voltage ratio regulation scope.
Background technique
Constant pressure network secondary regulation technology can significantly improve the flexibility and the efficient of hydraulic system as a kind of new type hydraulic system form.But, it but has been subjected to certain restriction in the application of Hydraulic Field at present, and wherein most important reason is exactly the element that also lacks a kind of effective driving straight line and rotary load now.Hydraulic transformer grows up under this technical background just.
Proposed a kind of novel hydraulic design of transformer notion among the patent WO 97/31185, compared with the conventional hydraulic transformer, this hydraulic transformer rolls into one the function of oil hydraulic motor and oil hydraulic pump, has formed independent hydraulic element.Although have lot of advantages on this hydraulic transformer principle, it be developed into a kind of hydraulic element of practicality, also to solve many problems.In this patent, only considered thrust plate and cylinder body this to the relation between the flow pair, and do not consider thrust plate and rear end cover this to the flow pair to the hydraulic transformer Effect on Performance.In this patent, the cornerite equal and opposite in direction of three kidney slots on the thrust plate, by this hydraulic transformer, the regulation range of transformation ratio is very little in the limited rotation angle range of thrust plate.
Among patent WO 99/40318 and the WO 00/28211, structure to hydraulic transformer is improved, the high pressure notch of thrust plate front-end face is guided to the central position of thrust plate ear end face, the invariant position of other two notches, the hydraulic fluid port of rear end cover has also been done corresponding adjustment simultaneously, the pressure regulation of hydraulic transformer is improved than scope, but it is still very limited, in this patent, 4 hydraulic fluid ports of rear end cover link to each other with the low pressure oil circuit with two load oil circuits respectively by selector valve, have increased the complexity of hydraulic transformer structure.Simultaneously, in order to prevent the inclination of thrust plate, used a rolling bearing that radial dimension is bigger, this has increased the volume of hydraulic transformer.
Among the patent ZL 03129072.8, also the thrust plate notch shape is improved, three notches of thrust plate front-end face are guided to respectively on the different distribution circle of ear end face, make the rotatable angle of thrust plate increase, widened transformation ratio to a certain extent.But, this change also can be introduced the another one problem, be exactly when the thrust plate angle changes, area of contact between thrust plate ear end face and rear end cover can constantly change, and the increase of thrust plate angle makes the thrust of thrust plate ear end face continue to increase, and support force constantly reduces, cause internal leakage increase, the efficient of transformer to reduce, even cause between the notch and link up, transformer can not be worked.Therefore, the maximum transformation ratio that this kind hydraulic transformer can reach is less, and boost capability is very limited, has limited the application area of this kind hydraulic transformer.
In a word, the thinking of above-mentioned several improvement projects is the same, keep three equal notches of thrust plate front-end face constant, and change notch form or quantity on the thrust plate ear end face, the mode of the rotatable scope by increasing thrust plate increases the transformation scope of hydraulic transformer.
Summary of the invention
The objective of the invention is in order to increase the regulation range of hydraulic transformer transformation ratio, proposed a kind of under the situation that does not change the rotatable scope of thrust plate, obtain bigger transformation scope by the cornerite size that changes three notches on thrust plate front/rear end and the rear end cover simultaneously, particularly can obtain higher transformation ratio (the highest induced pressure that can obtain being several times as much as charge oil pressure), realize hydraulic transformer from high pressure to low pressure and from low pressure to the wider transformation of high pressure.
The technical solution adopted in the present invention is:
Main shaft by Bearing Installation in housing, one end of central shaft is hinged on the main shaft, and the other end passes the center of cylinder body, is installed in the copper sheathing at spherical valve plate spherical end surface center, the axis of central shaft and main-shaft axis intersect at a certain angle, form the clino-axis type structure.Several plunger one ends are hinged on the main shaft, and the other end is installed in the plunger cavity of cylinder body.Adopt the spherical valve plate structure, make the more reasonable stress of cylinder body, thrust plate, increase stability, the spherical end surface of spherical valve plate forms with cylinder body and cooperates, and flat end face forms with rear end cover and cooperates.Dwang passes the center of rear end cover, links together by spline and spherical valve plate; Several bolts link together rear end cover, transition plate and housing.
The side surface of spherical valve plate has axial communication notch, links up the leak pressure of housing pressure and spherical valve plate flat end face, prevents from can not in time discharge behind the oil liquid leakage of flat end face of spherical valve plate; Have annular compensating groove on the flat end face of spherical valve plate, and link to each other with the communication notch of side, correcting plane end face upward pressure, and in time discharge leakage fluid; Spherical valve plate has three cornerite kidney slot mouths that cause not of uniform size that axially connect, and is respectively: high pressure notch, low pressure notch and load notch; Three notches are distributed on the same distribution circle, and the distribution circle of the plunger lumen pore on the size of distribution circle and the cylinder body spherical end surface is identical.
Have on the rear end cover and spherical valve plate notch size, on all four three notches in position.The high pressure hydraulic fluid port connects high-pressure oil passage, and the low pressure hydraulic fluid port connects the low pressure oil circuit, and the load hydraulic fluid port connects the load oil circuit, and high pressure hydraulic fluid port and hydraulic transformer lower dead centre were angled when rear end cover was installed; Three corresponding hydraulic fluid ports coincidences on three notches and rear end cover when spherical valve plate is installed.By the rotation dwang spherical valve plate is rotated in certain positive negative range, thereby realize that hydraulic transformer changes transformation ratio in a big way.
Beneficial effect of the present invention: the angle by rotation dwang change thrust plate, realize the adjusting of hydraulic transformer transformation ratio; Can obtain higher transformation ratio (the highest induced pressure that can obtain being several times as much as charge oil pressure), realize hydraulic transformer from high pressure to low pressure and from low pressure to the wider transformation of high pressure.
Description of drawings
Fig. 1 is the structural principle schematic representation of hydraulic transformer
Fig. 2 is the spherical valve plate sectional view
Fig. 3 is the right elevation of Fig. 2 spherical valve plate
Fig. 4 is the left view of Fig. 2 spherical valve plate
Fig. 5 is the cylinder body sectional view
Fig. 6 is the right elevation of Fig. 5 cylinder body
Fig. 7 is the housing sectional view
Fig. 8 is that the X of Fig. 7 housing is to view
Fig. 9 is the sectional view of transition plate
Figure 10 is the left view of Fig. 9 transition plate
Figure 11 is the sectional view of rear end cover
Figure 12 is the left view of Figure 11 rear end cover
Among the figure: 1-main shaft, 2-snap ring, 3-lip-type packing, 4-snap ring, 5-O type circle, 6-bearing, 7-housing, 8-front cover, 9-bearing, 10-plunger, 11-central shaft, 12-prestressing spring, 13-cylinder body, 14-O type circle, 15-spherical valve plate, 16-transition plate, 17-rear end cover, 18-dwang, 19-O type circle, 20-axially communicating groove, 21-annular compensating groove, the spherical end surface of A1-spherical valve plate, the flat end face of A2-spherical valve plate, A-high pressure notch, T-low pressure notch, B-load notch, α
A-high pressure notch cornerite, α
T-low pressure notch cornerite, α
B-load notch cornerite, the distribution circle of notch on Y1-thrust plate, the distribution circle of Y2-cylinder body upper plug lumen pore, internal thread on B1～B6-cylinder body, the bolt hole on C1～C6-transition plate, the bolt hole on D1～D6-rear end cover, A '-high pressure hydraulic fluid port, T '-low pressure hydraulic fluid port, B '-load hydraulic fluid port, δ-high pressure hydraulic fluid port A ' is with respect to the deflection angle of bolt hole D1.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
As shown in Figure 1, housing (7) one ends pass through fixedly front cover (8) of snap ring (4), form sealing by O type circle (5), the other end is by 6 bolts and transition plate (16), rear end cover (17) connects, form sealing by O type circle (14), main shaft (1) is by bearing (6), (9) be installed in the housing (7), one end of main shaft (1) and front cover (8) form sealing by lip-type packing (3), lip-type packing (3) is fixing by snap ring (2), one end of central shaft (11) is hinged on the main shaft (1), the other end passes the center of cylinder body (13), be installed in the copper sheathing at spherical end surface (A1) center of spherical valve plate (15), the axis of the axis of central shaft (11) and main shaft (1) intersects at a certain angle, form the clino-axis type structure, several plunger (10) one ends are hinged on the main shaft (1), and the other end is installed in the plunger cavity of cylinder body (13).Adopt the spherical valve plate structure, make the more reasonable stress of cylinder body (13), thrust plate (15), increase stability, utilization is installed in the impacting force of the prestressing spring (12) on the central shaft (11), the spherical end surface (A1) of spherical valve plate (15) forms with cylinder body (13) and cooperates, and flat end face (A2) forms with rear end cover (17) and cooperates.Dwang (18) passes the center of rear end cover (17), links together by spline and spherical valve plate (15), forms sealing by O type circle (19) between dwang (18) and the rear end cover (17).
As Fig. 2～shown in Figure 6, the side surface of spherical valve plate (15) has three equally distributed axial communicating groove (20), link up the leak pressure of the flat end face (A2) of housing pressure and spherical valve plate (15), prevent from time to discharge behind the oil liquid leakage of flat end face (A2) of spherical valve plate (15); Have annular compensating groove (21) on the flat end face (A2) of spherical valve plate (15), and link to each other with the axial communicating groove (20) of side, correcting plane end face upward pressure, and in time discharge leakage fluid; Spherical valve plate (15) has three cornerite kidney slot mouths that cause not of uniform size that axially connect, and be respectively: cornerite is α
AHigh pressure notch (A), cornerite be α
TLow pressure notch (T) and cornerite be α
BLoad notch (B); Three notches are distributed on the same distribution circle Y1, and the distribution circle Y2 of the plunger lumen pore on the size of distribution circle Y1 and cylinder body (13) spherical end surface is identical.
As Fig. 7, shown in Figure 8, have 6 internal thread B1～B6 on housing (7) and the end face that transition plate (16) is connected, be used for installing and fixing 6 bolts of transition plate (16) and rear end cover (17), under wherein internal thread B1 is positioned at, directly over B4 was positioned at, B2, B3, B5, B6 were symmetrically distributed in B1, B4 both sides respectively.
As Fig. 9, shown in Figure 10, the transition plate (16) of design between the rear end cover (17) of hydraulic transformer and housing (7), make that the thickness of spherical valve plate (15) is thickeied, and then make the connection between spherical valve plate (15) and the dwang (18) obtain enough big intensity.Can connect actuator in the rear end of dwang (18) or manually spherical valve plate is rotated, reach the purpose that changes pressure.Transition plate (16) outer ring has 6 bolt hole C1～C6, and the position is corresponding one by one with internal thread B1～B6 on the cylinder body (13).
As Figure 11, shown in Figure 12, rear end cover (17) outer ring has bolt hole D1～D6 of 6, the position is corresponding one by one with internal thread B1～B6 on the cylinder body (13), and have on the rear end cover (17) and spherical valve plate (15) notch size, on all four three hydraulic fluid ports in position: cornerite is α
AHigh pressure hydraulic fluid port (A '), cornerite be α
TLow pressure hydraulic fluid port (T ') and cornerite be α
BLoad hydraulic fluid port (B ').The high pressure hydraulic fluid port (A ') become the δ angle with bolt hole (D1).
Initial position was when spherical valve plate (15) was installed: three hydraulic fluid ports that three notches (A), (T), (B) are upward corresponding with rear end cover (17) respectively (A '), (T '), (B ') overlap.
The oil circuit Connecting format of this hydraulic transformer is: high-pressure oil passage is connected to the high pressure hydraulic fluid port (A ') of rear end cover (17), and the low pressure oil circuit is connected to the low pressure hydraulic fluid port (T ') of rear end cover (17), and the load oil circuit is connected to the load hydraulic fluid port (B ') of rear end cover (17).High pressure oil communicates with the plunger cavity of cylinder body (13) via the high pressure notch (A) of the high pressure hydraulic fluid port of rear end cover (17) (A '), spherical valve plate (15) during work, low pressure oil communicates with the plunger cavity of cylinder body (13) via the low pressure notch (T) of the low pressure hydraulic fluid port of rear end cover (17) (T '), spherical valve plate (15), and load oil communicates with the plunger cavity of cylinder body (13) via the load notch (T) of the load hydraulic fluid port of rear end cover (17) (T '), spherical valve plate (15).Rotation rotatingshaft (18) rotates spherical valve plate (15) in the positive and negative several angle near initial position, can obtain very big voltage ratio regulation scope.
Claims (5)
1. increase the hydraulic transformer of voltage ratio regulation scope, mainly comprise main shaft, housing, central shaft, cylinder body, it is characterized in that: main shaft (1) by Bearing Installation in housing (7), one end of central shaft (11) is hinged on the main shaft (1), the other end passes the center of cylinder body (13), be installed in the copper sheathing at spherical valve plate (15) spherical end surface center, the axis of central shaft (11) and main-shaft axis intersect, form the clino-axis type structure, plunger (10) one ends are hinged on the main shaft (1), the other end is installed in the plunger cavity of cylinder body (13), the spherical end surface of spherical valve plate (15) forms with cylinder body (13) and cooperates, flat end face forms with rear end cover (17) and cooperates, and dwang (18) passes the center of rear end cover (17), links together by spline and spherical valve plate (15); Bolt links together rear end cover (17), transition plate (16) and housing (7).
2. the hydraulic transformer of increase voltage ratio regulation scope according to claim 1, it is characterized in that: spherical valve plate (15) has three cornerite kidney slot mouths that cause not of uniform size with fitting surface (A1) side of cylinder body (13), is respectively: high pressure notch (A), low pressure notch (T) and load notch (B); Three notches are distributed on the same distribution circle Y1, and the distribution circle Y2 of the plunger lumen pore on the size of distribution circle Y1 and cylinder body (13) spherical end surface is identical.
3. the hydraulic transformer of increase voltage ratio regulation scope according to claim 1 is characterized in that: housing (7) one ends pass through fixedly front cover (8) of snap ring (4), form sealing by O type circle (5), the other end is by bolt and transition plate (16), rear end cover (17) connects, form sealing by O type circle (14), main shaft (1) is by bearing (6), (9) be installed in the housing (7), one end of main shaft (1) and front cover (8) form sealing by lip-type packing (3), lip-type packing (3) is fixing by snap ring (2), one end of central shaft (11) is hinged on the main shaft (1), the other end passes the center of cylinder body (13), be installed in the copper sheathing at spherical end surface (A1) center of spherical valve plate (15), form sealing by O type circle (19) between dwang (18) and the rear end cover (17).
4. the hydraulic transformer of increase voltage ratio regulation scope according to claim 2 is characterized in that: the side surface of spherical valve plate (15) has axial communicating groove (20), link up the leak pressure and the housing pressure of spherical valve plate (15) flat end face, prevent from time to discharge behind the oil liquid leakage of flat end face of spherical valve plate (15); Have annular compensating groove (21) on the flat end face (A2) of spherical valve plate (15), and link to each other with the axial communicating groove (20) of side, correcting plane end face upward pressure, and in time discharge leakage fluid; The kidney slot mouth of spherical valve plate (15) flat end face (A2) and the respective slot of sphere end face axially connect.
5. the hydraulic transformer of increase voltage ratio regulation scope according to claim 1 is characterized in that: have on the rear end cover (17) and spherical valve plate (15) notch size, on all four three hydraulic fluid ports in position: high pressure hydraulic fluid port (A '), low pressure hydraulic fluid port (T ') and the load hydraulic fluid port (B '); The high pressure hydraulic fluid port (A ') become the δ angle with bolt hole (D1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101832599A CN101435417A (en) | 2008-12-12 | 2008-12-12 | Hydraulic transformer for increasing voltage ratio regulation scope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101832599A CN101435417A (en) | 2008-12-12 | 2008-12-12 | Hydraulic transformer for increasing voltage ratio regulation scope |
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| Publication Number | Publication Date |
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| CN101435417A true CN101435417A (en) | 2009-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008101832599A Pending CN101435417A (en) | 2008-12-12 | 2008-12-12 | Hydraulic transformer for increasing voltage ratio regulation scope |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749293B (en) * | 2009-12-31 | 2012-02-01 | 北京理工大学 | Adjustable hydraulic transformer with rotary swash plate |
| CN105545835A (en) * | 2015-12-18 | 2016-05-04 | 哈尔滨工业大学 | Parallel-connection type inclined shaft type hydraulic transformer |
| CN105570206A (en) * | 2016-02-24 | 2016-05-11 | 太原科技大学 | Hydraulic transformer provided with combined port plate |
| CN105626601A (en) * | 2016-03-24 | 2016-06-01 | 太原科技大学 | Hydraulic transformer with combined type valve plate and hydraulic loop of hydraulic transformer |
| CN105650042A (en) * | 2016-03-28 | 2016-06-08 | 太原科技大学 | Hydraulic transformer adopting combined type valve plate and hydraulic circuit of hydraulic transformer |
| CN105673587A (en) * | 2016-03-24 | 2016-06-15 | 太原科技大学 | Hydraulic transformer adopting combined port plate |
| CN106930995A (en) * | 2017-05-09 | 2017-07-07 | 太原科技大学 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
| CN107013522A (en) * | 2017-05-09 | 2017-08-04 | 太原科技大学 | The compression apparatus for adjusting force of Port Plate Pair |
| CN107035640A (en) * | 2017-05-19 | 2017-08-11 | 无锡英特帕普威孚液压有限责任公司 | A kind of plunger pump that bearing clearance is adjusted with locking nut |
-
2008
- 2008-12-12 CN CNA2008101832599A patent/CN101435417A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749293B (en) * | 2009-12-31 | 2012-02-01 | 北京理工大学 | Adjustable hydraulic transformer with rotary swash plate |
| CN105545835A (en) * | 2015-12-18 | 2016-05-04 | 哈尔滨工业大学 | Parallel-connection type inclined shaft type hydraulic transformer |
| CN105545835B (en) * | 2015-12-18 | 2017-06-06 | 哈尔滨工业大学 | A kind of parallel connection type inclined shaft type hydraulic transformer |
| CN105570206A (en) * | 2016-02-24 | 2016-05-11 | 太原科技大学 | Hydraulic transformer provided with combined port plate |
| CN105626601A (en) * | 2016-03-24 | 2016-06-01 | 太原科技大学 | Hydraulic transformer with combined type valve plate and hydraulic loop of hydraulic transformer |
| CN105673587A (en) * | 2016-03-24 | 2016-06-15 | 太原科技大学 | Hydraulic transformer adopting combined port plate |
| CN105673587B (en) * | 2016-03-24 | 2017-08-15 | 太原科技大学 | Using the hydraulic transformer of combined type valve plate |
| CN105650042A (en) * | 2016-03-28 | 2016-06-08 | 太原科技大学 | Hydraulic transformer adopting combined type valve plate and hydraulic circuit of hydraulic transformer |
| CN106930995A (en) * | 2017-05-09 | 2017-07-07 | 太原科技大学 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
| CN107013522A (en) * | 2017-05-09 | 2017-08-04 | 太原科技大学 | The compression apparatus for adjusting force of Port Plate Pair |
| CN106930995B (en) * | 2017-05-09 | 2018-09-25 | 太原科技大学 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
| CN107035640A (en) * | 2017-05-19 | 2017-08-11 | 无锡英特帕普威孚液压有限责任公司 | A kind of plunger pump that bearing clearance is adjusted with locking nut |
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Open date: 20090520 |