FR2463863A1 - LIGHT TRAY GROUP WITH ITS SUPPORT MEMBER FOR PISTON PUMP - Google Patents

Abstract

LIGHT PLATE AND SUPPORT ELEMENT FOR ALTERNATIVE PISTON PUMP EXECUTING A REVOLUTION MOVEMENT IN A ROTARY MOTOR BLOCK. THE PLATE 50 AND THE SUPPORT ELEMENT 40 HAVE LIGHTS 54, 55, 44, 45 IN ALIGNED, WHICH CROSS THEM AND MAKE COMMUNICATION THE MOTOR BLOCK 21 AND THE LIGHTS OF THE COVER 13. THE UNIT IS IN TWO PIECES 50, 40 OF WHICH THE SURFACES TURNED TO ONE THE OTHER ARE SPHERICAL 53, 43 AND COMPLEMENTARY, SO THAT THESE TWO PIECES CAN EXECUTE RELATIVE MOVEMENTS AND THAT THE FACE 52 APPLIED AGAINST THE MOTOR BLOCK 21 CAN FOLLOW OSCILLATIONS WHEN THE PUMP IS RUNNING VERY QUICKLY. GENERAL APPLICATION TO PISTON PUMPS DISTRIBUTED AROUND A SYMMETRY SHAFT IN A ROTARY MOTOR BLOCK.

Description

1. The invention relates to piston pumps and light trays

self-aligning

  to these pumps and more particularly to a pis-

  around a center around which they perform

  cut a movement of revolution or arranged on the side of a center, pump, tray with lights in two pieces

  self-aligning, these two parts having sur-

  spherical bearing faces that maintain alignment

  tray and moving parts of the pump.

  Piston pumps distributed around a cen-

  and those with pistons on one side of a center have been used for a long time to deliver a hydraulic fluid under pressure in many systems

  different. These pumps operate by movement of

  evolution of several pistons on gliding soles

  mounted on a shelf, inclined to the axis that

  poses reciprocating pistons in cylinders of a moving engine block or rotary piston holder

  on a tray with lights. Unfortunately, the increase

  The speed of these pumps increases the tilting of the rotary engine blocks and increases the wear and misalignment of the light plate relative to the engine blocks. To reduce the influence of this effect, the engine block is provided with a shaft end disposed at the end opposite to that of the control shaft and mounted coaxially thereto. This shaft end is mounted in a bearing

  from the end of the crankcase of the engine block. However,

  the addition of this shaft end, the engine block bends slightly with respect to the light tray with consequent inequality of wear. It has been suggested to overcome this secondary problem by adding plastic support blocks to the light tray, these support blocks helping to solve the problem by yielding under pressure and spreading the load. Although these blocks reduce the acuity of the problem in the short term, they are subject to wear

  and finally lose their effectiveness.

  Another serious problem raised in this type of pump lies in the cost and difficulty of observing the necessary tolerances of manufacture of the pads, because the adjustment of the light tray is difficult. The subject of the invention is a pump providing

  a solution to these problems by using a

  which is in two parts having between them spherical and complementary bearing surfaces that allow relative movement between these two parts

  and thus allow a plateau surface to bend

  in order to follow the tilting movement of the engine block and thus to completely eliminate the problem

misalignment.

  The subject of the invention is therefore a pump with

  alternate shades around a center or side

  center, this pump comprising a rotating motor unit

  in a housing and having cylinders distributed about an axis of symmetry and in which the pistons are movable alternately, a control shaft being adapted to rotate the engine block and being mounted at one end of said axis of symmetry, un- shaft end of the engine block being mounted at the other end of the axle

  of symmetry and journalled in said housing, a

  recessed biasing beam mounted in the housing being in contact with said pistons so as to adjust their reciprocating movement in the engine block, a mechanism for adjusting the inclination of said biasing plate mounted in the housing. inlet and outlet positioned at a distance from each other and a substantially annular shaped light plate being mounted between said intake and exhaust ports and the engine block so as to surround said shaft end, said light plate having on one side a flat surface bearing against the engine block around the shaft end, the lights of this plate communicating the engine block and the housing lumens, said light tray having on the other side a substantially spherical surface and a bearing member mounted in the housing having a corresponding spherical surface against which the spherical surface of the light tray re is applied, this supporting element bearing com- corresponding apertures, so that said

  light tray can move around said overhead

  spherical face so as to follow the movements of

  tilting or tilting of the engine block into

  1.0 ment. The light plate and the support element are preferably two separate parts whose combined thickness corresponds to a standard one-piece light tray used in the reciprocating piston pumps distributed around a center and therefore these two parts. can be 1.5 used in any conventional pump of this type with pistons

  distributed around a center or a side of a center, -

  that is to say in any sloping platform pump on the axis, without it being necessary to make modifications to the pump; however, it would be possible to secure the support element with the housing and to realize it in one

  piece with the lid against which the

  lighted water. This light tray has pre-

  interference of annular and radial circulation grooves

  lubrication oil wear surfaces.

  The invention will be described in more detail with reference to the accompanying drawings by way of non-limiting examples and in which: FIG. 1 is a diagrammatic axial section;

  of an exemplary embodiment of an alternating piston pump

  native speakers distributed around a center, this pump being equipped with a light tray according to the invention; FIG. 2 is a plan view of the support element of the light plate of FIG. 1; - Figure 3 is a cross section along the line III-III of Figure 2; Fig. 4 is a plan view of the actual light tray of the embodiment of Fig. 1; - Figure 5 is a cross section along the line V-V of Figure 4; FIG. 6 is a cross-section on an enlarged scale of the group formed by the support element and the light tray of the invention; FIG. 7 is a plan view of the support element of the light plate of a piston pump distributed on one side of the center; - Figure 8 is a cross section along the line VIII-VIII of Figure 7; Fig. 9 is a plan view of the actual light tray of the tray and support member group; and - Figure 10 is a cross section according to

the line X-X of FIG.

  Figure 1 illustrates an alternate piston pump

  natives distributed around a center and comprising a housing 10 in which a control shaft 11 is mounted in bearings 12 at one end. The other end of the housing 10 is closed by a perforated cover 13 which is fixed to the housing by not shown bolts and which bears against the latter by means of a seal'14..A plateau 15 reclining on the tax is articulated on one side 16 on an axis 17 and it is connected by joints on the diametrically opposite side 18 to an operating piston 19 by means of a rod 20. A

  cylindrical engine block 21 is clased on the drive shaft

  11 inside the housing -10 and has upper and lower shaft ends 22 and 23 journalled in bearings 24 and 25 disposed in the housing 10

  on the one hand and in the lid 13 on the other. The pis-

  26 are alternately movable in cylinders 27 of the engine block 21 and are moved by soles

  sliding members 28 assembled with ball joints 29 of the

  The sliding soles 28 move on a support plate 30 carried by the biasing plate 15 and are held in place by an abutment ring 31. The reciprocating movement of the pistons

  26 in the cylinders 27 is thus controlled by the inclination

  bias tray 15. All the elements described are classic. A support element 40 and a plateau 50 with lights

  are mounted between the engine block 21 and the cover 13.

  The support member 40 has a flat surface 42 on one side and a convex, substantially spherical surface 43 on the other side. The light tray 50 has a

  flat bearing surface 52 which is applied against the former

  tremity of the motor unit 21 and a spherical concave surface

  53 which is complementary to the surface 43 against which it is applied. In the normal position,

  surfaces 42 and 52 are parallel; however, depending on

  when the engine block 21 undergoes a slight flip-flop

  as such is the case in all pumps operating

  At high speed, the bearing member 40 and the light plate 50 are movable relative to each other on the complementary surfaces 42 and 52, so that the surface 53 is kept in regular contact with the top of the engine block 21 and that the surface 43 remains in contact with the perforated lid 13. The support element

  and the plate 50 each comprise on the opposite sides

  a series of lights 44, 45 and 54, 55 which

  pour from side to side, which are aligned and therefore communicating. These lights communicate through the element 40 and the plate 50 the end of the top of the engine block 21 with an intake port and an outlet port (not shown, but conventional) perforated cover 13. The plate 50 comprises on the support surface

  plane 52 an annular groove 56 disposed between the

  54 and 55 and its outer circumference, as well as radial grooves 57 which go from the annular groove 56 to its outer circumference. The support element 40

  likewise on the flat surface 42 an annular groove

  wire 46 located between the lights 44, 45 and the circumference j. exterior, as well as radial grooves 47 that will

  from the annular groove 46 to the outer circumference.

  These grooves are channels of lubrication and sealing. The light plate unit used in a piston pump located on one side of a center is

  shown in Figures 7 to 10. This group is

  the same as that of the light stage group of a piston pump distributed around a center, except that the lights and the similar holes bear the same reference numerals, but with a prime sign. A support member 40 'and a light tray 50' constitute the group rising between the motor unit and the perforated cover. The support element 40 'has a flat surface

  42 'on one side and a convex surface, substantially. sphé-

  43 'on the other side. The light tray 50 '

  has a flat support surface 52 'and a surface

  spherical eye 53 'which is complementary to the convex surface 43' and bears against it. The support element 40 'and the plate 50' each have on one side a series of lights 60, 61, 62 which pass through them, which are linear and therefore which communicate

  as well as a light 63 on the other side of a line dia-

  metric, so-conventional for the light trays pumps of this type. The plate 50 'has an annular groove 56' and radial grooves 57 'and the element' has an annular groove 46 'and radial grooves

  47 'which constitute channels of lubrication and water

  chéité. It is obvious that the invention has not been described

  as an example and that it is likely to

  its modifications without leaving its domain.

Claims (4)

  1. Group with light plate and its support element, intended to be mounted between a perforated cover and a rotary engine block (21) of a piston pump, characterized in that it consists of an annular element support (40) and annular plate with lights (50)   having convex spherical surfaces (43) and   cellar (53) complementary and flat bearing surfaces   situated opposite each other, said control element   40 (40) and said light tray (50) having aligned lights spaced from each other (44, 45, 54, 55), which pass therethrough and which communicate the block motor (21) and the cover lights (13), said light tray (50)   and said support member (40) being able to execute a displacement   spherical cement relative to each other in order to   put on this light tray (40) to follow any   Tilting or tilting of the motor unit (21) in function   ment. 2. Group according to claim 1, characterized in that the bearing element (40) has a convex spherical surface (43) and the light plate (50) has a complementary concave spherical surface (53).   3. Group according to one of claims 1 and   2, characterized in that the flat surface (42) of the element   (40) and (52) of the light plate (50) have annular grooves (46, 56) between them.   lights (44, 45, 54, 55) and their outer circumference   as well as radial grooves (47, 57) arranged   between the corresponding annular groove and their circumference. external interference.   Group according to Claim 3, characterized   in that the combined thickness of the separate pieces cons-   staggered by said support member (40) and said light tray (50) is substantially equal to the thickness of a conventional one-piece light tray, for said pump.