Expansible chamber devices – Relatively movable working members – Interconnected with common rotatable shaft
Patent
1992-10-08
1994-01-18
Look, Edward K.
Expansible chamber devices
Relatively movable working members
Interconnected with common rotatable shaft
417273, 91497, F04B 104
Patent
active
052792080
DESCRIPTION:
BRIEF SUMMARY
The device is a radial reciprocating engine provided with a built in synchronizing mechanism, which is intended to be driven as pump or motor and which may be designed with a fixed or an infinitely adjustable displacement. By actuation of the synchronizing mechanism, both of the rotating main portions of the engine [the centre shaft 1 and the outer rim 2] are urged to rotate at a synchronous speed and the mechanism simultaneously causes; on one hand a transfer of the forces generated by the pressure medium and on the other hand a balancing by means of the force moment, which from the outside is supplied or led away through the shaft journal of the machine. In connection hereto is also obtained a relieving of the cross head forces on the pistons 11 and cylinders 10, fitted between the centre shaft 1 and the outer rim 2. The synchronizing mechanism consists of a synchronizing hub 3, supported thus that its centre of rotation coincides with the line c--c and being designed with a guide rail-provided control arm, which in combination with two cam rollers 24 and 23, affixed to the centre shaft 1 and to the outer rim 2 resp., causes a restricted rotation of these portions. The centre shaft 1, with the rotational centre a--a, is supported in fixed bearings in the machine frame. At distance e, on both sides of the line a--a are found the rotational centres b--b and c--c for the outer rim and for the synchronizing hub 3 resp. In machines of the type having an adjustable displacement a parallel displacement of these rotational centres is effected towards the line a--a with the result that the flow volume at first is reduced to 0 and thereupon, at continued adjustment, increases to the original value, but with a reversal of the flow direction.
The following drawings are attached hereto:
Drawing I shows a machine designed for constant displacement
FIG. 1--longitudinal section
FIG. 2--cross section 2--2
FIG. 3--section 3--3 of the synchronization hub
Drawing II shows a machine with adjustable displacement
FIG. 4--longitudinal section
FIG. 5--two cross section 5--5
FIG. 6--external view of the adjustment apparatus
Drawing III shows three schematical sketches
FIG. 7--simplification of section 2--2 to FIG. 2
FIG. 8--load and moment distribution at an arbitrary
and 9--angular rotation .alpha..degree. at forward and rearward position resp.
DRAWING I
In the machine with constant displacement is shown that the frame consists of a shell 4 with two bearing bracings 5 and 6 bolted thereto and having built in bearings 7 and 8 for the centre shaft 1, one end of which is shaped into a shaft journal for force transmission and with the opposite end thereof shaped to receive the feed slide 9. Externally the centre shaft in section d--d has a number of spherical borings 13 for fitting of the cylinders 10. From each boring there is a radially directed hole 14 for communication with the feed slide 9. The centre shaft is designed for receiving a cam roller 24 bolted thereto at a distance r.sub.1 from the rotational centre (a--a).
The outer rim 2 is supported by two bearings 15 and 16, which with the bearing attachment 17 are mounted thus that the rotational centre b--b will become parallel to (a--a) at distance e from this. Furthermore the outer rim has internally a number of spherical borings 21 for fitting of pistons 11 and there is furthermore a cam roller 23 bolted thereto at the distance R.sub.1 from the rotational centre (b--b).
The synchronizing hub 3 has a supporting bearing 18 built into the bearing attachment 19, which is mounted thus that the line c--c will become the centre of rotation. This line is parallel to and positioned at distance e from the rotational centre (a--a) of the centre shaft but at the opposite side as compared to the line (b--b).
DRAWING II
At the machine with adjustable displacement, some details are exchanged and redesigned and the adjustment means are furthermore added. The shell 4 has bores for guide bushings 26, 27, 28 and 29 and guide screws 36 and 38 for guiding the new bearing attachments 20 an
REFERENCES:
patent: 4697991 (1987-10-01), Tsukahara
Look Edward K.
McAndrews, Jr. Roland G.
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