DE2148138A1 - Piston machine with a cross head - Google Patents

Description

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Dipl.-Iw GF VeICKMANN ₃ 2 1 Ag 1 OO

Dipl.-Ikg. Η.ΨκτακΜΑΚΗ, Dipl.-Phys. Dr. K. Finckb Dipl.-Ing. R A. ¥ eickmann _s Dipl-Chem. B. Huber

8 MUNICH Si », THE POST BOX £ 60 820

MÖHLSTRASSE 22, RUFtIUMMER 4S 2? 21/22

<9S3921 / 22>

do;: fg; & m® sunderland limited,

P. O. Box No. 2a, Pcllion, SuncJcrland, Durham, England

Piston machine with a cross head

The invention relates to a piston engine with a Piston rods, a connecting rod and an articulated connection zv / ischen the piston rod and the connecting rod, wherein the articulated connection comprises a cross-head slide shoe, which is led to achieve a rectilinear movement.

In a machine of this type, the cross head is with a Enc * o fixed to the piston rod and has a cross head pin transversely to the piston axis and to the axis of the connecting rods, by means of which one end of the connecting rod sci'v / en'ibor is stored. A machine like this is off dr-r British patent specification. 580 704 known.

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" £ * ^mm

209821/0554

In a machine of this type, according to the invention, at least one channel is provided in the sliding shoe, which is used for Supply of coolant and / or lubricant to one or more channels in the piston rod is used.

A preferred embodiment is characterized in that the sliding shoe is guided in a straight line in or on a guide is, on whose sliding surface at least one surface of the sliding shoe slides, which has a cavity with which the channel is connected that the sliding surface has a cavity with a coolant and / or lubricant supply communicates and that the two cavities during all or part of the movement of the sliding shoe surface on the sliding surface.

One channel is preferably used to supply coolant and / or lubricant for pivoting the connecting rod on the cross head pin.

This one channel can also contain coolant and / or lubricant to one or more channels in the connecting rod.

According to the invention, the cross-head slide shoe can have an elongated body with a T-shaped cross section and the guide comprise a groove in which the transverse web of the T-body is guided and the longitudinal web of the T-body can be the cross-head pin wear.

Preferably, the cavity in the sliding shoe comprises a longitudinal groove in the

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2U8138

Crossbar of the T-body and the cavity in the guide is preferably designed as a bore, the arrangement being made such that the sliding shoe slides back and forth along the guide the bore is moved relative to the groove, but during the entire movement or part of the Movement of the crosshead remains in contact with the hat.

The invention is shown in the drawing using an exemplary embodiment explained in more detail. In the drawing shows:

Fig. 1 is a partially sectioned side view of a Cylinder of a piston engine according to the invention;

Figure 2 is an end view, partially in section, of the cross head; Fig. 3 is a partially sectioned plan view of the cross head.

The machine that forms the subject of this exemplary embodiment is a single-acting opposed piston two-stroke marine diesel engine. It has several cylinders of the same construction, only one of which is shown and described. The machine has a lower one with a central offset

5 piston 4 connected to a crankshaft and an upper piston

6, which is connected to a cross bar 7, which in turn by side piston rods 8, cross heads 9 and connecting rods 10 is connected to lateral cranks 11 of the same crankshaft.

The lower piston has a piston rod 13 with a

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2H8138

central cross head 12 is connected to which a central connecting rod 14 is articulated, which is also articulated with the crankshaft offset 5 is in connection.

The cross head has a longitudinal web 15 and a transverse web 16 as well as a cross head pin 17. The longitudinal bar 15 and the transverse web 16 have a T-shape in the plane and we ken as a sliding shoe / whose head, i.e. the transverse web 16, is guided in guides 18 to achieve vertical movement.

The piston rod 13 is rigidly connected to the head of the cross head and the connecting rod 14 is mounted on the cross head pin 17 by means of two arms 19 which have bearings and receive the ends of the cross head pin. In this way, the piston rod 13 can go up and down, the lower end of which is guided through the cross head to achieve a vertical movement, the connecting rod 14 giving the crankshaft a rotational movement and sweeping an angle A on the cross head pin 17 during the rotation W.

In the edges of the part 16 grooves 20 and 21 are provided. A channel 22 leads from the groove 20 through the slide shoe to a vertical bore 23. The bore 23 is upward with it a bore 25 in the piston rod 13 and downwardly with a channel 24 in the cross head pin 17 in connection, the bore 24 in the form of an upside down Y is formed (Fig. 2).

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Coolants and / or lubricants are via a not shown Bore in the associated carrier 18 is fed to the groove 20. The agent flows through the channel 22 and the Bore 23 and from there through the channel 24 and the bore 25. The fluid in the channel 24 reaches the bearing surfaces between the pin and the arms 19. The fluid in the bore 24 passes up through the piston rod the piston to cool and lubricate it.

The bore 25 is surrounded by a concentric channel 26 which serves to return the fluid conveyed to the piston in accordance with the parts shown. This fluid then arrives in a second channel 28 in the web 15 via an inclined bore 27. The channel 28 is shown in FIG guided.

Each groove 21 and 20 is longer than the stroke of the cross head by a length which corresponds to the diameter of the bore 29 or is slightly larger, or equals the diameter of the feed bore, not shown, or this diameter something towers above. The fluid can be supplied to the grooves and be carried away by these, regardless of the position of the cross head.

In the example described above, there are none that can be nested or extendable pipes or oscillating

/ 0 9 H 7 I / \\ ;; 5 A

Connection lines required to supply a fluid to the piston rod, as was previously the case.

- patent claims -

Claims (6)

2U8138 claims 1. Piston machine with a piston rod, a connecting rod, and an articulated connection between the piston rod and the connecting rod, wherein the articulation comprises a cross-head slide shoe, which for Achieving a rectilinear movement is guided, characterized in that at least one channel (22) in the slide shoe (15, 16) is provided, which is used for feeding of coolant and / or lubricant to a channel or several channels (25, 26,) in the piston rod. 2. Machine according to claim 1, characterized in that the sliding shoe in a straight line in or on a guide (18) is guided, on the sliding surface of which at least one surface of the sliding shoe slides which has a cavity (20), which is connected to the channel (22) that the sliding surface has a cavity (29), which with a KUhI -mittelund / or Lubricant supply is in communication and that the two cavities during the whole or one Part of the movement of the sliding shoe surface are related to the sliding surface. 3. Machine according to claim 1 or 2, characterized in that the channel (22) for supplying coolant and / or Lubricant is used to pivot the connecting rod (14) on the cross-head pin (l7). - 8 209821/0554 4. Machine according to one of claims 1 to 3, characterized in that that the channel (22) for supplying coolant and / or lubricant to one or more channels in the connecting rod (14) is used. 5. Machine according to one of claims 1 to 4, characterized in that that the cross-head slide shoe has an elongated body with a T-shaped cross-section and the guide has a groove includes, in which the transverse web (16) of the T-body is guided is and that the longitudinal web (15) of the T-body carries the cross-head pin (17). 6. Machine according to claim 2 or one of the following claims, characterized in that the cavity in the sliding shoe has a longitudinal groove (20, 21) in the transverse web (16) of the T-body comprises and the cavity in the guide is designed as a bore (29), the arrangement being made so that when the sliding shoe slides back and forth along the guide, the bore (29) moves relative to the groove (20, 21) is, however, in communication with the groove during all or part of the movement of the crosshead remain. 209821/0 554 Blank page