DE2232790A1 - FIXING ARRANGEMENT FOR A CYLINDER WITH PISTON - Google Patents

Description

Patent attorneys Dipl.-Ing. R Weickmann,

Dipl.-Ing. H. Weickmann, D1PL.-PHYS. Dr. K. Eincke Dipl.-Ing. R A.Weickmann, Dipl.-Chem. B. Huber

SAHA 8 MUNICH 86, DEN

POST BOX 860 820 MÖHLSTRASSE 22, CALL NUMBER 98 39 21/22

MILIER FLUID POWER CORPORATION, 7NO15 York Road, Bensenville,

Illinois, V.St.A.

Mounting arrangement for a cylinder with piston.

The invention relates to cylinders and to a mounting arrangement for a cylinder with a piston.

There are many different types of mounting for cylinders. The applicant manufactures a variety of such fastenings, as shown in the "Miller" cylinder bulletins that are open to the public.

With such a fastening, which is named "Model 72" are on the sides of the cylinders near the two cylinder covers of a cylinder with a rod connection approximately tetrahedral eyes are provided. These eyes have through holes for receiving fasteners and extend approximately at right angles to the length of the cylinder rod · The National Fluid Power Association (ΝΕΡΑ) has set standards for the dimensions of the various types of fastening. These standards allow the various manufacturers to equip their special cylinders with fastenings that can be exchanged at the installation site enable·

The special fastening arrangement to which the invention relates has been derived from the ΝΕΡΑ standards of 9.11.1969,

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which are still in force, the name "side lugs" For the cylinders, dimensions are specified that relate to the nominal cylinder bore. The dimensions that have to do with the distances between the center lines of the retaining bolts, which are defined by the respective Befeatigungsstrulctur, which is attached to the cylinder, are plugged, and with the bolt diameter. So is ZoB. the middle of the retaining bolts, four in number at each of the four corners of the cylinder, as well as the distance between the center line of the cylinder rod and the mounting surface on the cylinder. Any fastening that corresponds to these dimensions must be included in the standards so that the construction of the attachment itself need not be specified. So far, side eye mounts are used welded to cylinders · The fastening according to the invention, on the other hand, is removable.

The object of the invention is to provide an improved rare-eye attachment for a cylinder with a piston _{or the like}

To solve this problem, the invention provides an approximately U-shaped bracket, the middle part with holes for The anchor rods of a cylinder are accommodated so that the bracket is attached to the two cylinder covers can be. The two loops of the U-shaped attachment fork the lower part of the two sides of the cylinder cover and have through holes for fasteners that are approximately at right angles to the holes for the anchor rods and to the length of the cylinder rod and for attaching the cylinder to one Serve support surface.

Further details can be found in the following description of an exemplary embodiment with reference to the attached Drawings. Show it)

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1 is a perspective view of the mounting arrangement and a cylinder and piston for which the mounting assembly is used;

Pig.2 an end view of the cylinder and the invention Fastening arrangement;

3 shows a side view of a cylinder and the cylinder according to the invention Mounting arrangement and

Mg ₀ 4 a top view of the fastening arrangement according to the invention

The exemplary embodiment shown is intended to explain the concept of the invention and is not a limitation of the invention mean on this example.

The attachment 10 according to the invention is intended for a cylinder 12 with a piston, preferably but not absolutely, for one with anchor rods, as shown in the drawings. A cylinder with a piston is equipped with a straight extendable piston rod 14, which is through a bushing 16 in at least one of the Cylinder cover 18 occurs, which closes the two ends of the cylinder tube 20. For a cylinder with anchor rods The anchor rods 22 extend in the longitudinal direction of the cylinder and hold the cylinder cover on the cylinder tube with the help of anchor nuts 24 ·. Openings 26 serve for the entry and exit of the fluid into the interior of the cylinder tube or out of the cylinder tube. In operation, pressure fluid is in a known manner through the openings 26 initiated and exerts a force against one Piston in the cylinder tube 20, which is connected to the piston rod 14. This makes the piston rod 14 linear is moved to the cylinder tube 20 and the movement can be converted into a work function. But with that the thrust exerted by the piston rod can do a useful job, the cylinder (or the piston

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rod) connected to a supporting surface. This requires some form of attachment for the cylinder.

The attachment assembly 10 according to the invention may be referred to as ^w side eye ^{attachment H.} Essentially, the fastening arrangement 10 consists of an approximately U-shaped bracket 30 made of durable hard material, such as hardened steel or the like. The bracket 30 has a central portion 32 with a top surface 32a, a bottom surface 32b, an outer surface 32c and an inner surface 32d. The bracket 30 further has two parallel legs 34 and 36 which extend at a distance from one another at right angles to the central part 32. Each leg also has a top surface 34a or _e 36a, a bottom surface 34b, 36b, respectively, an outer surface 34o and 36c and an inner surface 34d or 36d.

In the middle part 32 two holes 38 are provided for receiving the anchor rods 22, which are countersunk in the outer surface 32o in order to receive the anchor nuts 41. In this way, the bracket 30 can be attached to the cylinder 12 _e

Furthermore, each leg 34 and 36 is provided with holes 42 for fasteners extending from the top surface 34a and 36a extend through the bottom surface 34b and 36b, respectively, so that a fastener, such as a bolt or the like, can be inserted through the holes 42, around the bracket 30 and the cylinder 12 on a support surface to moor. The holes 42 are expediently on the cover surfaces 34a and 36a of the two legs 34 and 36, respectively provided with a recess.

It is intended that the bracket 30 in different

To manufacture sizes for the different sized cylinders, Cylinder sizes are usually determined by the size of the cylinder bore marked, whereby the fastening dimensions are standardized on the basis of the bore dimensions · Pur each Hole dimension, the holes 38 are to be made at different distances to the anchor rods 22 with the smallest possible Take up play · This dimensional ratio of the holes 38 to the anchor rods 22 ensures that for every cylinder size each appropriately dimensioned bracket 30 comes exactly into the correct position on the underside of the cylinder cover. It is also intended that the dimension between the centerlines of the holes 42 for the fasteners in each Legs 34 and 36 are an exact spacing for each cylinder size, all in accordance with NEPA standards.

On the inner surface 32d of the middle part, between the inner surfaces 34d and 36d, the two legs 34 and 36 are located two stages provided. These are formed by two spaced parallel surfaces 44a and 44b, which are recessed into Surfaces 46a and 46b open which abut inner surfaces 34d and 36d. In the embodiment shown the inner surfaces 34d and 36d run from the joint with the recessed surfaces 46a and 46b slightly sloping outwards. This particular shape is particularly useful in conjunction with a cylinder cover, the is also bevelled slightly outwards, as can be seen in the surfaces 50a, 50b, 50c and 50d in FIG.

For example, for a one-and-a-half-inch bore this is appropriate measurement between the surfaces 44a and 44b two inches (50.8 mm) and that measurement between the joint of the Areas 46a and 46b with areas 34d and 36d would be 2.08 inches (5 µm). The length of each leg 34 and 36 from the front surface 32c to the free end would be 1.607 Inches (40.8 mm) and the distance between the

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Faces 34d and 36d on the free end of the legs 2.160 inches (550 mm). The matching bevels on the cylinder cover and the legs of the mounting bracket offer the advantage of a flush contact between these surfaces, if the attachment is mounted on the cylinder cover o

The fastening according to the invention is particularly useful for a cylinder with a rod connection, as is the case in the example is shown · In this type of cylinder, the anchor rods are under tension. the Inner surface 32d of central portion 32 should at least match a substantial portion of the outer surface of the cylinder cover 18 Make contact · In the example shown, this is achieved in that the surface 32d is designed as a flat surface is that on a large part of the cylinder cover between fits the anchor rods

Of course, the surfaces 34d and 36d do not necessarily have to be conical. The fastening arrangement according to the invention offers a secure and stable hold as long as a firm surface contact «wipe the cylinder cover and of surface 32d is present and as long as the fastener inserted through holes 4-2 is firmly in place is anchored to a support surface When assembled, the mounting bracket is attached to the cylinder, when it is steokt on the cylinder cover and tightened by the nuts 41 on the anchor rods · The lateral ones Legs are fixed by the fastening elements that are pushed through and the cylinder on a support surface fix «the underside of legs 34b and 36b is preferably smoothed and is below the center line of the cylinder rod, according to NEPA standards for the Bore dimension · In this way, the cylinder is secured against any movement in any direction, so that the Working stroke of the piston rod is undisturbed and precise

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this extends the life of the cylinder. The cylinder covers are pressed firmly against the support surface, whereby an exact height and position adjustment of the piston rod is possible. The "side eye attachment" corresponds i.e. the standard dimensions, but can be removed if the fastening nuts 41 are removed

Modifications to the example shown and described are possible within the scope of the invention.

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Claims (1)

Expectations (1 ^ mounting arrangement for a cylinder with piston, of a cylinder tube, a piston rod on a common Center line, two cylinder lids and anchor rods passing through the lids that make up the device hold together, characterized by a fastening element (30) which is connected to a first [part (32) in System on the outer surface of a cylinder ceiling (18) can be brought and in this position by detachable fasteners (4-1) can be fixed on the cylinder cover and which has two spaced apart second parts (34, 36) which enclose the sides of the cylinder cover between them, with every other part having a transverse bore (42) for Has receiving a fastener that extends approximately at right angles to the length of the cylinder, and said transverse bores having a predetermined relationship to each other and to the center line. 2. Fastening arrangement according to claim 1, characterized in that that the fastening element (30) is an approximately U-shaped bracket in plan 3 · Fastening arrangement according to claim 1 or 2, characterized in that the fastening means for fixing of the fastening element on the cylinder cover from holes (38) in the first part for receiving the anchor rods (22) of the cylinder and nuts (41) which can be screwed onto the anchor rods. 4 · Fastening arrangement according to one of the preceding claims, characterized in that the transverse bores there are through holes in the second parts of the fastening element 3 0 9 8 0 7 / 'T B 1 8 5. Fastening arrangement according to one of the preceding claims} characterized in that the side surfaces (5Oa-d) of the cylinder cover against the free end of the The cylinder cover is tapered and the fastening element has inner surfaces (34d, 36d) which point onto the side surfaces of the top of the cylinder if that Fastening element on the end face of the cylinder cover is flush 6 · Fastening arrangement according to one of the preceding claims 3 to 5, characterized in that the lower The surface of the fastening element is arranged in this way relative to the holes (38) receiving the anchor rods iet that it comes to the center line of the cylinder in a position that a fixing of the cylinder cover on a support surface with the help of the fastening means