前苏联专利SU1709924A3 Valve plate of rotary hydraulic plant

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优先权

专利摘要:
A thin valve plate for use in an axial piston hydraulic unit wherein valve plate ports are provided with slot shaped extensions passing through the valve plate to provide limited initial fluid communication between cylinder block ports and valve plate ports and wherein the thickness of the valve plate is no greater than one half the width of the slots. Furthermore, such valve plate facilitates economical manufacture wherein the slots and valve plate ports can be stamped in a hardened steel disk.
公开号:SU1709924A3
申请号:SU854003597
申请日:1985-12-26
公开日:1992-01-30
发明作者:Бэк Ричард (Младший)
申请人:Сандстрэнд Корпорейшн (Фирма)；
IPC主号:

专利说明:

The invention relates to hydraulic assemblies, in particular to multi-cylinder piston machines with axial arrangement of cylinders in a rotating cylinder block, with an end dispenser and swinging washer,
The purpose of the invention is to simplify the design and reduce the cost of the unit.
FIG. 1 shows a hydraulic unit, section: FIG. 2 - valve plate. view from the side of the cylinder block; in fig. 3 — plate mounting unit: in FIG. 4 - a fragment of the valve plate with a window and a groove; in fig. 5 - valve plate, section along the window with a groove; in fig. 6 shows an embodiment of the slot: in FIG. 7 - shaped groove.
An axial-piston rotary hydraulic unit, for example, a pump or motor, of constant or variable capacity, in which a thin valve plate is used as the front distributor, consists of body 1 and end cover 2. Inside body 1 on shaft 3, on slots 4 a cylinder block 5 is mounted rotatably about its central axis 6. The cylinders 7 of the cylinder block 5 are provided with cylindrical windows 8 facing the end surface 9 of the cylinder block 5. In the lid 2, there are inlet 10 and outlet 11 channels which extend onto the flat surface 12 of the lid 2.
In the cylinders 7 of the block 5 of the cylinders, which can be equipped with sleeves 13, are pistons 14, spherical heads 15 which are equipped with shoes 16; swinging washers 18 sliding over the opaque surface. In case a hydraulic unit is to be used as a hydraulic machine with a constant capacity, the swinging washer 18 is fixed in the housing 1. In the hydraulic unit with a variable capacity, the swinging washer 18 can be pivotally mounted. inside the housing 1.
The end face 9 of the cylinder block 5 may be provided with a support plate 19 with windows 20 attached to it, or have a bronze coating. The cylinder block 5 is pressed against the plane of the surface 12 of the cover 2 by means of a spring 21 mounted on the shaft 3.
Between the cover 2 and the cylinder block 5, parallel to their flat 12 and face 9 surfaces, perpendicular to the central axis 6 of the block 5, a thin valve plate 22.0n is fixed on the cover 2 against rotation by means of lugs 23.
peripherally and provided with recesses 24, or holes for studs 25. In valve plate 22, eight through holes 26 33 are made, arranged along four radii four holes 26, 28, 30, 32 and 27, 29, 31, 33 symmetrically with respect to its main axis
34. The single bore holes 26, 28.30,32 are designed to communicate the cylindrical windows 8 of the cylinder block 5 with the inlet 10 formed in the lid 2, the other 27,29,31, 33 are for communication with the outlet 11.
The front leading edges 35-38 of the extreme bore holes 26-29 of the valve plate 22 are provided with through ring-oriented grooves 3942. The width of the groove is less than the width of the hole.
The grooves can be made on one pair of symmetric extreme adjacent holes, for example the grooves 39 and 40 are made on the windows 26 and 27 of the valve plate 22, oriented towards each other. Due to this embodiment, the valve plate 22 can be installed with the possibility of reverse orientation relative to the end surface 9 of the cylinder block 5 and the flat surface 12 of the cover 2.
Two asymmetrical through-holes in the valve plate, for example grooves 39 and 42 on windows 26 and 29, can be provided with grooves. Valve plate 22 is reversibly oriented in housing 1 depending on the direction of rotation of cylinder block 5.
The grooves may have a different shape. For example, its width may be a constant, approximately more than two-thirds of its length, variable with a gradual expansion directed towards the through-hole, or in two parts, first, part 43 gradually expanding towards the opening 26, the second part has a width greater than the narrowest section of the first section 43 and connects both sections 43 and 44 by the neck 45, forming the Venturi channel
In a hydraulic unit, a valve plate 22 is used with a very thin one. Its thickness is selected depending on the shape of the groove. It does not exceed the maximum width of the groove or equal to half the effective width of the groove, or not less than half the area of the groove divided by the length of this groove. The thickness of the valve plate 22 can not be greater than the value of 2.54 mm (1 inch).
The valve plate 22 is made of steel, and on its surface may be
applied bronze coating. Such a plate thickness makes it possible to obtain through grooves by stamping, which provides a more accurate implementation of grooves of various configurations, and the depth of the groove is equal to the thickness of the valve plate.
When the cylinder block 5 is rotated, for example, in a clockwise direction, the bore holes 26, 29 of the valve plate 22 are the leading bore holes. When the edges of the windows 8 of the cylinders 7 overlap the front leading edges 35 and 38 of the passage openings 26 and 29 of the valve plate 22, the hydraulic impact decreases due to the grooves 39 and 42; providing a gradual throttling of the working fluid, while reducing hydraulic noise and wear of the friction surfaces, which is caused by cavitation. By reversing the hydraulic assembly of the other pair, the passage openings 28 and 27 become the leading ones.
. Thus, the use of a thin valve plate makes it possible to obtain grooves and through holes of various shapes by machining on dies at a very low cost. The metal consumption for the manufacture of the plate and the housing is reduced by reducing the overall dimensions
FORUMAILA AND 3 ABOUT AND 1. Valve plate of the rotary hydraulic unit; consisting of a housing inside which the cylinder block is mounted rotatably around a central axis, and an end cover with inlet and exhaust channels extending onto a flat surface perpendicular to the central axis and parallel to the end surface of the cylinder block having cylindrical windows communicating with cylinder block, while the valve plate is located between the end surface of the cylinder block and the flat surface of the end cover and fixedly located on this end cover, while the valve NPA plate has passage openings, symmetrically arranged equidistantly
relative to its main axis for sequential and direct communication of the inlet and outlet channels of the end cap with the cylinder windows, at least
5 (An outer edge of the holes has an annularly oriented groove, and the groove width is smaller than the width of the holes, characterized in that, in order to simplify the construction and reduce the cost, the groove is made through and the thickness of the valve plate is less than 2.54 mm and less than the maximum width of the groove.
2. Plasti a on p, 1, about t l and h and y and a so that the plate thickness is equal to the lol5 fault of the effective width of the groove.
3. Plate pop, 1, characterized in that at least one pair of symmetrical outermost plate openings is provided with grooves oriented towards each other, the valve plate being installed with the possibility of reverse orientation relative to the end surface of the cylinder block and the flat surface of the end cover.
5 4. The plate according to claim 1, so that at least Two asymmetric through holes of the valve plate have grooves, and the valve plate is installed with the possibility of reverse orientation in the housing depending on the direction of rotation of the block cylinders.
5. The plate according to claim 1, in which the groove has the same constant width by approximately two-thirds of its
5 lengths.
6. A plate according to claim 1, wherein the width of the groove has a constant expansion toward the hole.
Q 7. A plate according to claim 6, wherein the groove comprises a first part, gradually expanding in the direction of the aperture, a second part of a greater width than the width of the narrowest section of the first
5 parts, and the neck connecting two parts, with the formation of the Venturi channel.
8. Plate on PP. 6 or 7. This is due to the fact that the thickness of the valve plate is less than half the groove area,
Q divided by the length of this groove.

权利要求:
Claims (8)
[1]
Claim
1. The valve plate of the rotary hydraulic unit / consisting of a housing inside which a cylinder block is mounted rotatably around a central axis, and an end cap with inlet and outlet channels facing a flat surface perpendicular to the central axis and parallel to the end surface of the cylinder block having cylindrical windows in communication with the cylinders of the block, while the valve plate is located between the end surface of the cylinder block and the flat surface of the end cap and is not located on this end cap, the valve plate has passage holes symmetrically located at the same distance from its main axis for sequential and direct communication of the inlet and outlet channels of the end cap with the cylinder windows, at least one of the extreme openings has an annular shape oriented groove, wherein the groove width is less than the width of the holes, characterized in that, in order to simplify the design and reduce cost, the groove is made through and the thickness of the valve Anna plate smaller 2.54 mm and less than the maximum width of the recess.
[2]
2. Plastic according to claim 1, with the fact that the thickness of the plate is equal to half the effective width of the groove.
[3]
3. The plate according to claim 1, it is clear that at least one pair of symmetrical extreme adjacent holes of the plate is provided with grooves oriented to each other, and the valve plate is installed with the possibility of reverse orientation relative to the end the surface of the cylinder block and the flat surface of the end cap.
[4]
4. The plate according to claim 1, which is clear in that at least two asymmetric through holes of the valve plate have grooves and the valve plate is mounted with the possibility of reverse orientation in the housing depending on the direction of rotation of the block cylinders.
[5]
5. Plate pop. 1. characterized in that the groove has the same constant width at about two-thirds of its length.
[6]
6. The plate according to Claim. 1, with the fact that the groove width has a constant expansion towards the hole,
[7]
7. The plate according to claim 6, on the other hand, it is clear that the groove contains the first part, gradually expanding in the direction of the hole, the second part of a larger width than the width of the narrowest section of the first ^ part, and a neck connecting two parts, with the formation of a venturi channel.
[8]
8. The plate according to paragraphs. 6 or 7. The reason is that the thickness of the valve plate is less than half the area of the groove divided by the length of this groove.
!
27 11
Figure 2 ^{41 37}
Bb
29 11 '
Figure 5
FIG. 7

类似技术:

公开号 | 公开日 | 专利标题

SU1709924A3|1992-01-30|Valve plate of rotary hydraulic plant

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US4505655A|1985-03-19|Vane pump with positioning pins for cam ring and side plates

US5862704A|1999-01-26|Retainer mechanism for an axial piston machine

US3249061A|1966-05-03|Pump or motor device

US5188522A|1993-02-23|Vane pump with a throttling groove in the rotor

US3908517A|1975-09-30|Hydrostatic engine control

US5704274A|1998-01-06|Axial piston machine

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US4286933A|1981-09-01|Rotary vane pump with pairs of end inlet or outlet ports

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CN102549295B|2014-02-12|Rotary damper

CA1223792A|1987-07-07|Hydrostatic control device, particularly steeringdevice

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US2373537A|1945-04-10|Valve mechanism for steam engines

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同族专利:

公开号 | 公开日

GB8531538D0|1986-02-05|

DE3590198C2|1995-12-07|

DE3590198T1|1986-04-24|

GB2178489A|1987-02-11|

FR2563582A1|1985-10-31|

BR8506700A|1986-04-15|

CA1236757A|1988-05-17|

SE463475B|1990-11-26|

GB2178489B|1988-07-27|

JPH0563601B2|1993-09-10|

SE8506013L|1985-12-19|

US4550645A|1985-11-05|

JPS61502004A|1986-09-11|

WO1985005147A1|1985-11-21|

SE8506013D0|1985-12-19|

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

US06/605,019|US4550645A|1984-04-27|1984-04-27|Thin valve plate for a hydraulic unit|

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