DE2015581C - Roll stand for a continuous rolling mill - Google Patents

Description

two transmission gears 19 and 19α would be present - they could be separated by the distance (as) .

From Fig. 2 it can be seen that this distance can be increased up to the distance b if the distance c is identical to the required safety rate.

A numerical example is intended to serve as an illustration. Accepted

IO

a = 18 mm,
s = - 9 mm,

so in the first case the two gears can have the following distance

a - i = 18 - 9 = 9 mm. In the second case, if

c = s = 9 mm, the gears can move by b = 18 mm

be moved apart, taking into account the specified safety rate.

1 sheet of drawings

Claims (3)

1 2 additional gears from one axis to the other claims: according to the invention, each of the additional gears is assigned to it 1. Roll stand for a continuous rolling mill coaxial gear wheel by elastic pins od. Dg !. for metallurgical products of small widths, 5 connected. At least one of the by pivoting his upper Gerüsrteils a pin receiving holes on his around a correspondingly arranged axis at an opposite end of the adjacent gear Rolled stock stowage can be opened somewhat, have enlarged, frustoconical part. with simultaneous disengagement of the when the roller axes are in working position and Drive shafts arranged transmission gears io all transmission gears when a too excessive for the rotary movement of the machining of the rolling stock is in engagement, the rollers, characterized by the part of the forces acting on the drive shafts coaxially to the forces acting on the additional gears a slight bending of the drive gears (19, 19a) additional in the engagement of the elastic pins, whereby the interconnected gears (119, 119a) with the same 15 meshing flanks of the additional gears pitch circle (25) and the same pitch, but larger disengaged and finally the whole Process toothing depth arranged and the additional rolls off as if only the gear wheels had to transmit the gear wheels (119, 119a) with the gear tooth force couple,
wheels (19, I9a) are elastically connected. In the drawing the invention is for example 2. Roll stand according to claim 1, characterized in that 20 is shown. indicates that each of the additional tooth F i g. 1 shows a schematic cross section wheels (119, 119a) with the toothings of the two gear wheel pairs assigned to it, coaxial gearwheel (19, 19a) through elastic- namely the main gearwheels and the watch Pins connected. additional gears in working position; 3. Roll stand according to claim 2, characterized in that it is 25 F i g. 2 is a schematic drawing of the disengaged indicates that at least one of the respective toothings. a pin receiving bores at its In F i g. 1 with full lines are the the toothing of the two transmission gears 19 and the end of an enlarged, frustoconical part 19a in the working position, which are opposite the adjacent gear,
having. ₃₀ With 25 and 25a are the pitch circles of the two Transmission gears referred to in the engaged position. With 26 and 26a the outer circular arcs of the transmission gears 19 and 19a are designated. The invention relates to a rolling stand for a With α is the depth of engagement of the teeth of the gear continuous rolling mill for metallurgical production 35 gears 19 and 19a are designated,
nisse of small width, which by pivoting its In the same figure is with the dashed lines upper frame part around a correspondingly arranged the outline of the coaxial teeth of the additional Axis when rolling stock stowage is slightly open, gears 119 and 119a are indicated. It's out of it can, with simultaneous disengagement of the apparent that the side part as the involute of a circle Drive shafts arranged gear wheels for 40 gear wheels 19 and 19a also in the tooth die Rotational movement of the rolling stock processing wheels 119 and 119a is present; however this is Rollers. compared to the former on the side of the footboard In a known roll stand of this type, it and the head part of the teeth can be extended,
it can happen that when opening the scaffolding in the course of the pitch circles 26 and 26a are the same of the rolling process by more than the length of engagement 45 for both gears. of the teeth of the two gear wheels the connection in the F i g. 2 are the same parts included as the suspends between the gears, so that not both gears are in there is more certainty when closing the disengaged position. The frame the tooth pitch meshes again The distance between the two axes is such, bring to. In order to remedy this disadvantage, in this case the outer circular arcs of the part could be used Toothing of the two gears extended circles 26 and 26a of the corresponding gear toothing, but this would affect the strength of the teeth in wheels 19 and 19a (or the same) Reduce the ratio, which is a slightly larger distance from each other because of the large table Forces that the gear wheel pair has to transmit, so that the corresponding gears themselves is not advisable. 55 no longer touch their circumference). The invention has for its object to have the orderly comparison to its previous position correct tooth engagement without weakening the two partial circles 25 and 25a to ensure the distance b of the teeth when the device is removed from each other. more than the length of engagement of the teeth of the two If with c the overlap of the teeth of the Gears is opened. 60 additional gears are designated, i.e. H. the According to the invention, this object is thereby achieved with a maximum width earth of the circumferences 27 and 27a solved that on the drive shafts coaxially to the limited circles common surface that the Transmission gears additional meshing outer circular arcs of the teeth of the additional To represent gears with the same pitch circle and the same gears, the following parallel can be made Pitch, but larger toothing depth arranged 65 can be set up: and the additional gears with the gear tooth If the required minimum penetration depth than wheels are elastically connected. Security quota is considered and called s is In order to avoid that large forces by the from the F i g. I can see that - if only that