DE2231271C3 - Radial vibrator for compacting concrete in sheet steel molds of machines for the production of concrete blocks or precast concrete parts - Google Patents

Description

1 sheet of drawings

Claims (1)

1 2 fixed bearing parts rolling bodies indirectly claim: or to drive directly. The invention has the task of providing a Uu- Unbalance vibrators for compacting concrete in vibrators of the type mentioned above to create sheet steel molds of machines for production 5, through its structural design of concrete blocks or precast concrete parts, which weighted given a greater security against a change in a vertical unbalance shaft given two unbalance positions of the adjustable unbalance weight has, wherein the lower is fixed and that and in which the change in position of the unbalance upper adjustable weight is arranged on the unbalance shaft simplified. An improvement is also made, characterized in that the aim is to achieve oil lubrication,
in the hub of the upper adjustable unbalance The object is achieved according to the invention weight (3 a) one solved in bores of the unbalance shaft that in the hub of the upper adjustable (6) engaging Allen screw (8) arranged a balancing weight in bores of the unbalance shaft is. the Allen screw engaging through a closable housing opening is arranged through (7) is accessible, and that a lockable housing opening is accessible on the lower fixed 15, Unbalance an oil finger (4) is provided in and that an oil finger on the lower fixed unbalance an oil channel (2) provided in the housing (I) is provided, which into one provided in the housing enters. oil gutter protrudes. The inventive solution for Changing the imbalance is particularly easy and offers an absolute one with effortless handling Security against unwanted adjustments of the adjustable imbalance weight. Because of the fact that the unbalance at the bottom, fixed provided ülfinger in one provided in the housing »5 oil channel protrudes, if the height of the The invention relates to an unbalanced housing, a turbulence of the lubricating oil is achieved Vibrator for compacting concrete in sheet steel form and also the upper bearing of the unbalance shaft Lubricated by machines for the manufacture of concrete parts. nen or precast concrete on a vertical Details of the invention are based on the Unbalance shaft has two imbalance weights, 30 drawing explains in more detail, one example the lower fixed and the upper adjustable on the un- embodiment of the invention schematically veranwuchtwelle is arranged. vividly. It shows From the Austrian patent specification 222 336 F i g. 1 a section through an inventive a vibrator for compacting concrete with perpendicular ßen unbalance vibrator and Axis known. Furthermore, vibrators with two 35 F i g. 2 a plan view of an imbalance weight,
mutually adjustable unbalance weights z. B. According to FIGS. 1 and 2 are in a housing 1 from German patent specification 974 950 and a vertical unbalance shaft 6 in roller bearings 5, 5a German Auslegeschrift 1 558 859 known. stored. There is an imbalance 3 on the imbalance shaft 6 In the unbalance vibrator known from German patent specification 974 950 and above the fixed unbalance 3, the definition of the 40 is an unbalance ^ a is adjustable. For the adjustable unbalance weight using holding of the upper unbalance 3 α , slotted bearing eyes are screwed into the hub thereof and an Allen screw 8 is screwed into them, which engages in Bohrun clamping screws, ie only through clamping wires 8 a of the unbalance shaft 6. In the donation. This not only requires a considerable construction of the housing 1, a cover screw 7 makes it difficult to construct, but also has the housing opening 7 which can be closed again, partly so that the high stresses which the Allen screw 8 can achieve and during operation are secured the unbalance vibrator does not do justice to a socket wrench can be operated,
and therefore an undesired adjustment of the one. In the lower part of the housing 1, a channel 2 is The imbalance weight occurs. In the case of the German system, which can be filled with lubricating oil. In Legeschrift 1 558 859 a securing of each 5 ° this channel 2 engages an oil finger 4, which is arranged on the rotational position of the movable un- underside of the lower unbalance 3, which is currently set. The balancing weight is given, but this is spring-loaded. When the unbalance shaft 6 revolves, the lubricating oil is whirled up via the oil-loaded locking pins or finger 4 through the unbalanced shaft, and actuation rods carried out forging are required, the two rolling bearings 5, Sa caused.
Whereby the imbalance weights are only fixed with 55 The two imbalance threads 3, 3 a have anschlietelbar opposite the imbalance shaft. ßend to the attachment to the unbalance shaft 6 It is also in the case of unbalance vibrators that a horizontal hub is inserted concentrically to the axis of rotation have horizontal unbalance shaft, known (frangcndc slots 9, which cause an air movement Patent specification 1115 553), one with the toe and thus contribute to cooling. So that will Balancing shaft with a rotating disc with a 60 the otherwise strong heating on the one hand due to the angled To provide edge part, the better lubrication in an oil bath, on the other hand a corresponding one immersed and also prevents movement of the lubricating oil cooling. causes. For an unbalance vibrator with a perpendicular The invention also enables a special ten unbalance shaft is such a construction but low construction and thus a reduction of the unusable. In the case of bearings with fluid circulation 65 the distance between the two roller bearings 5, Sa, whereby a better storage of the unbalanced shaft is achieved from the Austrian patent 113 227 and a known, a conveying device for the lubricant damage to the bearings, in particular also to tel (pilot tube) by between the shaft and strong heating, is prevented.