EP1425425B1 - Converter gearing - Google Patents

Abstract

The invention relates to a converter gearing, comprising a gear rim (7), which is connected to the pivoting axis (6) of a converter box, said gear rim being engaged with at least one drive pinion (8) of the converter gearing (9) and at least one locking device, which can be pivoted to engage with and be disengaged from the toothed gearing of the gear rim, (7) in the form of a locking arm (12) that is positioned on a horizontal shaft (10) and configured with toothed gearing (11). The aim of the invention is to improve said locking device. To achieve this, the shaft (10) of the locking arm (12) is mounted in at least one terminal bearing (13, 13′) and the locking arm (12) can be engaged with and disengaged from the toothed gearing of the gear rim (7) in a non-positive manner, preferably by means of active force elements (14, 14′) in its end regions. In addition, the shaft (10) of the locking arm (12) is mounted in the housing of the converter gearing (9) by means of two eccentric bushes (4, 5), which rotate freely within one another, at each of its ends. The mounting is configured in such a way, that by the independent rotation of the same, an ideal mutual engagement position of the two interacting toothed gearing regions of the locking device (12) and the gear rim (7) can be set.

Description

The invention relates to a converter gear comprising one with the pivot axis a gear vane connected toothed ring in engagement with at least a drive sprocket of the converter gear, and at least one in the toothing of the ring gear on or swing-out blocking device in the form of a arranged on a horizontal shaft, with a toothing trained blocking arm, whose shaft is in a terminal Bearing stored and with power, eg. B. hydraulic cylinders in the toothing non-positively engageable and disengageable and the shaft with two in each other freely rotatable eccentric bushings at their shaft ends in the housing of the converter transmission is stored, such that by independently rotating the same an ideal engagement position of the cooperating toothing areas the locking device and the ring gear adjustable and the eccentric bushes and the receiving holes each have a clamping element assigned to set a low-cost storage.

Converter gears are going through during the oxygen embedding process high and changing moments loaded. These usually lead to extreme high surface load and thus excessive wear on the gears.

It is known the harmful load by using a blocking arm significantly reduce. Its terminal blocking toothing for blocking Engaging in the teeth of the ring gear on the converter vessel corresponds as "negative form" about 5 to 6 tooth gaps of the output gear. The In this case evenly distributed on a portion of the toothing load results in a Significant reduction in the surface pressure of the same and the resulting Wear.

A disadvantage of this construction is a required adjustment accuracy of Blocking lever and its storage, especially when two independent Biockiefiebel. Here already small deviations from the ideal engagement position to extremely high constraints and stresses and thus a faster wear on the sprocket and on the blocking arm toothing to lead.

To avoid these consequences, the measure was used. Casing and Blockierarrnbohrung work together. This is it required, gear and locking arm in their optimum position in the housing vorzumontieren, then fix and last edited together.

This results in addition to the very high production costs of the further disadvantage that a later replacement or a readjustment of the blocking arm due the special processing sequence is not possible.

The document EP 1 022 482 A1 describes a device for blocking an element of a kinematic chain on a ladle, comprising a component with provided on its periphery area relief-like elevations and depressions, complementary to areas with relief-like depressions and elevations on the element to be blocked, and, arranged at the end of a blocking arm, a device for moving the component between a passive position "disengaged" with the one to be blocked Element, and an active position in which the raised and recessed Regions of the element or the component penetrate each other. around that Block element in a predetermined position. Furthermore, display means for the element in the given position in terms of its elevated and recessed areas, as well as means for indicating the position of the blocking arm intended.

The document GB 809 683 A relates to an improvement of adjustable Bearings of bolts, shafts and similar elements. It describes the Possibility to adjust the position of these elements in all radial directions to be able to use, for which rotatable eccentric bushes are used, the inside of which receives the shaft, while the exterior is mounted in the housing. This results in the required adjustment options of the shaft in all radial directions.

In order to maintain an adjusted position in a locking device, this suggests Document GB 590 202 A suggests that the eccentric conical, rotationally symmetric Sheet metal over an outer screw connection with the help of a tension bolt be jammed. It is recognizable to be an extremely expensive and complex arrangement, which a much larger space requires.

Based on the aforementioned prior art, the invention has the object underlying, a converter gear referred to in the preamble of claim 1 Manufacture type in an improved design and form such that the optimal setting accuracy of the locking lever relative to the ring gear of the Getriebes readjusted at any time regardless of the production of these elements can be.

To solve the problem is in a converter gearbox of the aforementioned Art proposed with the invention that the clamping element a by means of axial wedges in the inner or outer diameter expandable clamping bush is.

With great advantage, the inventive design of the storage of Locking arm achieved that optimum adjustability of the backlash of Drive gearing of the gearbox at any time and independent of its production is achieved and / or the backlash can be readjusted. This results a uniform load distribution in the field of blocking teeth at about 5 to 6 tooth gaps of the engagement area of the driven wheel with drastically reduced surface load of the tooth flanks. Wear of gear wheels will be reduced accordingly.

A method for adjusting a low-play storage of the shaft of the Blokkierarmes a type according to the invention is characterized in that by turning the eccentric bushings of the shaft with relaxed clamping elements First, an optimal engagement of the toothed portion of the blocking device is set, and that thereafter the clamping elements of the two terminal Bearings brought by expansion in a low-play storage condition and the eccentric bushes in their then attained setting be fixed.

Figur 1

in Seitenansicht ein Konvertergetriebe;

Figur 2

im Schnitt der Schnittebene I-I in Fig. 1 die Lagerung der Welle eines Blockierarmes in Exzenterbuchsen;

Figur 3

im axialen Querschnitt ein Paar in Exzenterposition ineinander gelagerter Exzenterbuchsen;

Fig. 4 bis 6

unterschiedliche Exzenter-Positionen ineinander gelagerter Exzenterbuchsen.

Further details, features and advantages of the invention will become apparent from the following explanation of some schematically illustrated in the drawings embodiments. Show it:

FIG. 1

in side view, a converter gear;

FIG. 2

in section of the sectional plane II in Figure 1, the bearing of the shaft of a blocking arm in eccentric bushings.

FIG. 3

in axial cross section, a pair of eccentric eccentric journals;

4 to 6

different eccentric positions of mutually supported eccentric bushings.

Figure 1 shows a side view of a converter 9, comprising a with the Pivoting axis 6 of a converter vessel, not shown connected Sprocket 7 in engagement with at least one drive sprocket 8 of the converter gear 9, and at least one in the toothing of the ring gear. 7 swing-in or swing-out blocking device in the form of a horizontal Shaft 10 is arranged, with a toothing 11, preferably at its Endbereich pivotally formed or mounted blocking arm 12th

The blocking arm 12 is connected to the shaft 10 in at least one terminal bearing 13, 13 'mounted and by means of preferably acting on its end regions Power means 14, 14 ', for example hydraulic cylinders, in the toothing of the ring gear 7 frictionally engageable, or from the engagement of the teeth disengaged. The shaft 10 of the blocking arm 12 is two in each case one inside the other freely rotatable eccentric bushes 4, 5 at their shaft ends stored in the housing of the converter gear 9. By independent twisting this is a mutual ideal engagement position of the two interacting Gearing areas of the blocking device 12 and the Cog 7 adjustable.

The eccentric bushes 4, 5 and the receiving holes 18, 18 'of the Converter transmission 9 is ever a clamping element 16, 16 'for setting a low-play Assigned storage 13, 13 '. This can be achieved, for example, by that the clamping element 16 by means of axial wedges 17 in the inner and outer diameter expandable clamping bush is.

The setting of a play-free bearing 13, 13 'of the shaft 10 of a blocking arm 12 of the blocking device and the setting of an optimal engagement the toothing region of the blocking arm 12 in the ring gear 7 of the converter transmission 9, is done by turning the eccentric bushing 4, 5 at relaxed Clamping elements 16. Thereafter, the clamping elements 16 of the two terminal bearings 13, 13 'by widening in a low-play storage condition brought and the eccentric bushes 4, 5 set in their setting.

For this purpose, Figures 3 to 6 show different states of the penetrations the outer eccentric bushes 5 through the inner eccentric bushes. 4

In each case, the centers of rotation of the outer bushes 5 are denoted by the reference numeral "1", the inner bushes 4 with the reference numeral "2" and the Centers of the holes in the inner bushes 4 with the reference numeral "3" designated.

Figure 3 shows the so-called zero position in which the eccentricities of both Cancel each other out. The specified distance "S" indicates thus the eccentricity of a socket.

LIST OF REFERENCE NUMBERS

1

Center outer socket

2

Center inner socket

3

Center of a bore of the inner sleeve

4

inner eccentric bush

5

outer eccentric bush

6

Swivel axis converter vessel

7

sprocket

8th

pinion

9

converter gear

10

horizontal wave

11

gearing

12

blocking arm

13

camp

14

power means

16

clamping element

17

Axialkeile

18

drilling

Claims (2)

1. A converter gearing, comprising a toothed wheel rim (7) which is connected to the swivel axis (6) of a converter vessel and which meshes with at least one drive pinion (8) of the converter gearing (9), and at least one blocking device, which can be swivelled into or out of the tooth arrangement of the toothed wheel rim (7), in the shape of a blocking arm (12) arranged on a horizontal shaft (10) and comprising a tooth arrangement (11), wherein the shaft (10) of said blocking arm (12) is held in a terminal bearing (13, 13') and can in a non-positive way be moved in or out of the tooth arrangement (11) by force means, e.g. by hydraulic cylinders (14, 14'); with each end of the shaft (10) being held in the housing of the converter gearing (9) by means of two eccentric bushes (4, 5) which can freely rotate one inside the other such that by independent rotation of said eccentric bushes (4, 5) an ideal meshing position of the interacting tooth arrangements of the blocking device (12) as well as of the toothed wheel rim (7) can be set, and a clamping element (16, 16') for setting a play-free bearing arrangement (13) is associated with the eccentric bushes (4, 5) and the bore holes (18, 18') which accommodate them,
   characterised in that
   the clamping element (16) is a clamping sleeve (17) whose interior or exterior diameter can be opened up by means of axial wedges (17').
2. A method for setting a bearing arrangement with little play of the shaft (10) of a blocking arm (12) of the blocking device on the converter gearing (9) for the purpose of optimal engagement of the tooth arrangement of the blocking device (12),
   characterised in that
   by rotating the eccentric bushes (4, 5) in released clamping elements (16) of the shaft bearing, firstly optimal meshing of the toothed arrangements of the blocking device (12) is set, before the clamping elements (16) of the terminal bearing arrangements (13, 13') by means of opening up are made to cause a bearing state with little play, and the settings are made on the eccentric bushes (4, 5).

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