Bearing locking device and operation method thereof
阅读说明:本技术 轴承锁紧装置及其运行方法 (Bearing locking device and operation method thereof ) 是由 A·土卡克 D·克尼 R·威尔 于 2018-05-28 设计创作,主要内容包括:本发明涉及轴承锁紧装置(100)和借助于轴承锁紧装置将轴承(200)装到辊颈上以及从辊颈拆下的方法。轴承锁紧装置(100)具有能推移到辊颈上的螺纹环(110)。螺纹环自身具有外螺纹。在辊颈上设有靠近辊身的和远离辊身的止挡(315,120’),以限制螺纹环(110)的轴向运动。轴承锁紧装置(100)还具有环形螺母(130),其带有内螺纹(132),以旋拧到螺纹环(110)的外螺纹(112)上。为了更可靠地拧紧和拧松环形螺母,且在轴承运行期间可使螺纹紧固件保持免受压力,按照本发明在轴承(200)和螺纹环(110)之间能沿轴向移动地支承有压力环(140)。此外,在螺纹环(110)中,多个螺纹紧固件(115)能拧入轴向螺纹孔,以沿轴向挤压压力环(140)。最后,环形螺母(130)能相对于压力环(140)旋拧或调整。(The invention relates to a bearing locking device (100) and a method for mounting and dismounting a bearing (200) on and from a roll neck by means of the bearing locking device. The bearing locking device (100) has a threaded ring (110) that can be pushed onto the roll neck. The threaded ring itself has an external thread. Stops (315, 120') are provided on the roll neck near and away from the roll body to limit axial movement of the threaded ring (110). The bearing locking device (100) also has a ring nut (130) with an internal thread (132) to be screwed onto the external thread (112) of the threaded ring (110). In order to tighten and loosen the ring nut more reliably and to keep the threaded fastener free of pressure during operation of the bearing, according to the invention a pressure ring (140) is mounted so as to be axially displaceable between the bearing (200) and the threaded ring (110). Furthermore, in the threaded ring (110), a plurality of threaded fasteners (115) can be screwed into the axial threaded holes to press the pressure ring (140) in the axial direction. Finally, the ring nut (130) can be screwed or adjusted relative to the pressure ring (140).)
1. A bearing locking device (100) for fastening at least one bearing (200) on a roll neck (310) of a roll, wherein the bearing (200) is configured for supporting the roll in a rolling stand, and wherein the bearing locking device (100) has:
a threaded ring (110) which can be pushed onto the roll neck (310) and is mounted so as to be axially displaceable and which has an external thread (112);
a stop (120) distal to the roll body and a stop (315) proximal to the roll body for limiting axial movement of the threaded ring (110); and
a ring nut (130) having an internal thread (132) for screwing onto the external thread (112) of the threaded ring (110);
it is characterized in that the preparation method is characterized in that,
a pressure ring (140) is arranged between the bearing and the threaded ring (110), is mounted so as to be movable in the axial direction (R) and at least partially overlaps both the threaded ring (110) and the ring nut (130) in the radial direction; in the threaded ring (110), a plurality of threaded fasteners (115) are rotatably supported in axial threaded bores distributed over the circumference of the threaded ring in order to press the pressure ring (140) in an axial direction (R); and
the ring nut (130) can be screwed and adjusted axially relative to the pressure ring (140).
2. The bearing locking device (100) according to claim 1,
it is characterized in that
An annular spacer ring (150); and
a threaded fastener (135) directly or indirectly connected with the spacer ring (150) and the ring nut (130) so as to create an axial force between the spacer ring (150) and the ring nut (130) in order to axially remove the bearing (200).
3. The bearing locking device (100) according to claim 2,
it is characterized in that the preparation method is characterized in that,
said ring nut (130) having a radially outwardly projecting flange (138);
the annular spacer ring (150) has an inner flange (152) extending axially and radially in the radially inner region thereof, said inner flange overlapping the outer flange (138) of the ring nut (130) in such a way that the end side of the flange (138) of the ring nut (130) facing away from the roll barrel and the end side of the flange (152) of the spacer ring (150) facing away from the roll barrel are opposite one another; and is
The threaded fastener (135) can be screwed into an axially threaded hole of the flange (152) of the spacer ring (150), so that an axial force is generated between the spacer ring (150) and the ring nut (130) by supporting the threaded fastener (135) on the outer flange (138) of the ring nut (130).
4. The bearing locking device (100) according to claim 2,
it is characterized in that the preparation method is characterized in that,
said ring nut (130) having a radially outwardly projecting flange (138) having a plurality of axially oriented bores distributed about its circumference;
the annular spacer ring (150) is arranged opposite the end face of the outer flange (138) of the ring nut (130) close to the roll body in the radially inner region thereof and has a plurality of axially oriented, internally threaded bores in the radially inner region thereof distributed over the circumference thereof, wherein the bores in the spacer ring (150) are aligned with the bores in the flange (138) of the ring nut (130);
the threaded fastener (135) can be guided through a bore in a flange (138) of a ring nut (130) and screwed into a bore of the spacer ring, so that a force is formed between the spacer ring (150) and the ring nut (130) in order to release the bearing (200) from the roll neck (310), wherein the threaded fastener (135) is supported with its threaded fastener head on the flange (138).
5. The bearing locking device (100) according to claim 2,
it is characterized in that the preparation method is characterized in that,
an auxiliary ring (170) is provided for axial placement on the end face of the ring nut (130) remote from the roll body, wherein the auxiliary ring (170) has a plurality of axially oriented bores on its outer circumference distributed over its circumference, said bores being formed radially outside the ring nut (130);
the annular spacer ring (150) is disposed opposite the outer circumference of the auxiliary ring (170) on the end side thereof adjacent to the roll body, and has a plurality of axially oriented, internally threaded bores in the radially inner region thereof distributed over the circumference thereof, wherein the bores in the locking cap (140) are aligned with the bores of the auxiliary ring (170); and is
The threaded fastener (135) can be guided through a hole in an auxiliary ring (170) and screwed into a hole in the locking cap, so that a force is formed between the spacer ring (150), the ring nut (130) and the auxiliary ring (170) in order to loosen the bearing (200) from the roll neck (310), wherein the threaded fastener (135) is supported with its threaded fastener head on the auxiliary ring (170).
6. Bearing locking device (100) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the stop (120) for the threaded ring (110) remote from the roll body is formed by a clamping ring (120') which can be inserted in an axially fixed manner into a circumferential groove of the roll neck (310).
7. The bearing locking device (100) according to one of claims 1 to 5,
it is characterized in that the preparation method is characterized in that,
the stop (120) for the threaded ring (110) remote from the roll body is formed by a bayonet connection (120') which can be axially fixed in the roll neck (320) in the axial direction (R).
8. Bearing locking device (100) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the roll neck (310) is designed at its end remote from the roll body as a roll shoulder (320) having a reduced diameter, wherein the threaded ring (110) is mounted on the roll shoulder (320) in an axially displaceable manner, and a stop (120) for the threaded ring (110) remote from the roll body is fixed axially on the roll shoulder (320); and is
The stop (315) for the threaded ring close to the roll body is formed by a shoulder in the roll neck in the transition region to the roll shoulder.
9. The bearing locking device (100) according to claim 8,
it is characterized in that the preparation method is characterized in that,
a spacer ring (190) is mounted on the roll neck so as to be movable between a stop (315) in the roll neck and the threaded ring (110), wherein the radial height of the spacer ring corresponds, for example, to the difference between the diameter of the roll neck and the diameter of the roll shoulder.
10. Bearing locking device (100) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the pressure ring (140) is mounted axially displaceably and at least partially on the roll neck and/or the backing ring (190) and/or the threaded ring (110).
11. Bearing locking device (100) according to one of claims 1 to 8,
it is characterized in that the preparation method is characterized in that,
the longitudinal section of the threaded ring (110) with the external thread (112) represents an axially extending annular first section (111) of the threaded ring;
the threaded ring (110) has an extension on its end facing the bearing (200), said extension being an axially extending annular second section (113) of the threaded ring (110); and
the pressure ring (140) is mounted on an annular second section (113) of the threaded ring (110) so as to be axially displaceable.
12. The bearing locking device (100) according to claim 11,
it is characterized in that the preparation method is characterized in that,
the annular second section (113) has a smaller diameter than the annular first section (111), whereby a shoulder is formed in the threaded ring (110) between the first and second sections (113), said shoulder serving as a stop (117) for the pressure ring (140) facing away from the roll body.
13. Bearing locking device (100) according to one of the preceding claims,
it is characterized in that the preparation method is characterized in that,
the pressure ring (140) has a load cell (160) for detecting the actually applied mounting force.
14. Method for mounting a bearing (200) on a roll neck (310) of a roll by means of a bearing locking device (100) according to one of the preceding claims, having the following steps:
pre-positioning the bearing (200) on the roll neck (310) closer to the roll body and the bearing locking device (100) on the roll neck (310) further from the roll body;
axially fixing a stop (120' ) remote from the roll body to the roll neck (310);
-further mounting of the bearing (200) onto the roll neck (310) by axial displacement of the pressure ring (140), whereby further mounting of the bearing (200) towards the roll body (330) is achieved by screwing the threaded fastener (115) into the axial threaded bore of the threaded ring (110) towards the pressure ring (140), wherein the threaded ring bears against an axially fixed stop (120', 120 ") remote from the roll body;
-rotating the ring nut (130) on the external thread (112) of the threaded ring (110) until it comes to a stop on the pressure ring (140);
locking the ring nut (130) in its stop position against the pressure ring (140); and
inverting the threaded fastener (115) from the pressure ring (140).
15. The method of claim 14, wherein the first and second light sources are selected from the group consisting of,
it is characterized in that the preparation method is characterized in that,
-screwing the threaded fastener (115) into the threaded hole until a predetermined torque or a predetermined mounting force, respectively, is reached to mount the bearing (200); and
the ring nut (130) abuts against the pressure ring (140) only after the threaded fastener (115) is tightened with the predetermined torque or predetermined installation force.
16. Method for dismounting a bearing (200) from a roll neck (310) of a roll by means of a bearing locking device (100) according to one of claims 1 to 13 after screwing the bearing (200) onto the roll neck, for example according to the method of claim 14 or 15, having the following steps:
-moving the pressure ring (140) and the bearing (200) a distance in the direction of the roll body (330) by screwing the threaded fastener (115) into an axially threaded bore of the pressure ring (140) in the direction of the pressure ring (110) supported on an axially fixed stop (120', 120 ") remote from the roll body, to eliminate axial pretension between the ring nut (130) and the pressure ring (140);
-loosening said ring nut (130) and reversing it in an axial direction (R) away from said roll body;
reversing the threaded fastener (115);
-tightening the threaded fastener (115) so that a force is created between the spacer ring (150) and the ring nut (130) to loosen or remove the bearing (200) from the roll neck (310), wherein the threaded ring engages the ring nut (130) by its outer thread (112) and is moved a distance in the axial direction (R) towards the roll body (330) and is supported in the roll neck by stops (315, 325 and 326) near the roll body;
removing the stops (120' ) remote from the roll body; and is
The loose bearing (200) is removed from the roll neck, for example, in the axial direction by means of a lifting device, together with the bearing locking device (100).
Technical Field
The invention relates to a bearing locking device for a bearing on the neck of a roll, in particular for rolling metal rolling stock. By means of such bearings, the rolls are rotatably supported in the roll stand. The invention also relates to a method for operating the bearing locking device, on the one hand for mounting the bearing on the roll neck and on the other hand for removing the bearing from the roll neck.
Background
In principle, bearing locking devices are known from the prior art. One known bearing lock is shown, for example, in fig. 19. It is known in the art as the "QC-quick change" type (bearing lock). This known bearing
Conventionally, the
Conventionally, removal of the
A disadvantage of the known prior art is that the
As a supplement, with regard to the prior art, european patent application EP2143521a1 is mentioned, which discloses a flange connection by means of bolts. On the periphery of the main bolt connecting the two flanges, a plurality of smaller threaded fasteners are arranged, which are used to create a predetermined degree of pretension. These threaded fasteners are also held in the pre-tensioned state during operation or during the presence of the flange connection. This is disadvantageous.
Disclosure of Invention
The object of the invention is to make the known bearing locking device and the known method for mounting and dismounting bearings on and from a roll neck by means of a bearing locking device more reliable, in particular because the lifting device cable becomes unnecessary and the load on the threaded fastener used is permanently reduced.
The object is achieved in terms of device technology by a bearing locking device as claimed in claim 1. The bearing lock according to the invention is therefore characterized in that a pressure ring is provided between the bearing and the threaded ring, which is likewise mounted so as to be axially displaceable and which at least partially overlaps both the threaded ring and the ring nut in the radial direction; in the threaded ring, a plurality of threaded fasteners are rotatably supported in the axial threaded bore in a manner distributed over the circumference of the threaded ring to axially compress the pressure ring, and a ring nut is axially screwable and adjustable relative to the pressure ring.
The force required for mounting the bearing on the roll neck is achieved according to the invention firstly by means of a threaded fastener which is tightened with a torque wrench or other suitable tool. Thereby, the dangerous use of the hoisting means rope for applying the required mounting force to the bearing becomes unnecessary. As will also be explained below in the description of the method according to the invention, in order to ensure that the threaded fastener does not have to be subjected to pressure for a long time even during operation of the bearing and the roll, the ring nut is screwed towards the pressure ring until it bears against the pressure ring. The pressure ring and thus the bearing is fixed in its axial position by a ring nut. The threaded fastener is then reversed before starting operation and axial pressure is thereby removed.
This applies analogously to the process of releasing or detaching the bearing from the roll neck. Here too, the threaded fastener in the threaded ring is only used briefly for the separation of the pressure ring and the ring nut; the threaded fasteners in the threaded ring are only briefly subjected to large loads in the axial direction for this purpose; after this, it is again inverted and is thus unloaded axially.
According to a first embodiment, the bearing locking device further comprises an annular locking cover for overlapping at least the radially outer part of the bearing that does not rotate with the roll. In other words, the locking cap is configured to engage the bearing such that the bearing is axially removed from the roll neck together upon application of an axial force to the locking cap. According to the invention, said force is applied using a threaded fastener which is directly or indirectly connected to the locking cap or to the ring nut to create an axial tension between the locking cap and the ring nut to axially remove the bearing.
Different designs of the locking cap and the ring nut are the subject of the dependent claims.
Furthermore, different embodiments for the stop remote from the roll body are the subject of the dependent claims. In this way, the stop remote from the roll body is configured, for example, as a clamping ring or a bayonet connection.
The pressure ring is supported axially displaceably at least partially, for example, on the extension of the threaded ring (second section) facing the bearing, on the roll neck, or on a back ring between the bearing and the threaded ring.
To remove the bearing from the roll neck, it is necessary to limit the axial movement of the threaded ring towards the roll body and to enable the threaded ring to bear against a stop adjacent the roll body. The stop can be formed, for example, in such a way that the annular second section of the roll neck, i.e. the roll shoulder, has a smaller diameter than the annular first section of the roll neck. Alternatively, the stop for the threaded ring close to the roll body can also consist of a sliding key in the roll neck, which is flush with the threaded ring.
The mounting of the bearing on the roll neck is preferably effected with a predetermined axial force. In order to control the installation force, it is optionally provided according to the invention that the pressure ring has a load cell to detect the actual installation force applied.
The above-mentioned object is further achieved by a method for mounting a bearing on a roll neck by means of a bearing locking device according to the invention and by a method for releasing or removing a bearing from a roll neck. The advantages of the method are in accordance with the advantages mentioned above with reference to the claimed bearing locking device.
Drawings
The specification is accompanied by 19 figures in total, wherein:
fig. 1 shows a bearing locking device according to the invention, in which a first embodiment of a stop according to the invention remote from the roll body, a first embodiment of a locking cap-ring nut design and a first embodiment of a roll neck-threaded ring design are shown, respectively;
FIG. 2 shows a second embodiment of the stop remote from the roll body;
fig. 3 to 7 show the mounting of a bearing on a roll neck by means of a bearing locking device according to the invention;
FIGS. 8-13 illustrate the removal or release of the bearing from the roll neck;
fig. 14 shows a second embodiment of a locking cap-ring nut design according to the present invention;
fig. 15 shows a third embodiment of a locking cap-ring nut design according to the present invention;
FIG. 16 shows a second embodiment of the roll neck-threaded ring design;
FIG. 17 shows a third embodiment of the roll neck-threaded ring design;
FIG. 18 shows a fourth embodiment of the roll neck-threaded ring design;
fig. 19 shows a bearing lock known from the prior art.
Detailed Description
The present invention is described in detail below by way of example with reference to fig. 1 to 18. In all the drawings, the same technical elements are denoted by the same reference numerals.
Fig. 1 shows a
The
The
The
As can be seen from fig. 1, the
In addition, the
In addition to the first threaded
In total, there are 3 different variations in the design of the
A first variant is shown in fig. 1. As previously mentioned, the
A second variant of the design for the
A third variant is shown in fig. 15. In a third variant, an
Referring again to FIG. 1, the
The method according to the invention for mounting a
first, the bearing is pre-positioned on the
The pre-positioning of the bearing and the bearing locking device is usually carried out by means of a lifting device or by means of an assembly machine. After the pre-positioning, the
After the predetermined installation force is applied in the manner described above, the
The method for releasing or removing the bearing from the roll neck according to the invention comprises the following steps:
the starting situation of the removal process corresponds to the end configuration or state of the bearing lock according to the invention at the end of the assembly process, with the only difference that the second threaded
The starting position of the removal process is shown in fig. 8. In preparation for the removal process, the tension between the
In fig. 12 it is shown that the second threaded
Fig. 14 and 15 have already been mentioned above.
Fig. 16 shows a second exemplary embodiment of a cooperating design of the roll neck and the threaded ring. In contrast to the first exemplary embodiment shown in fig. 1, the second exemplary embodiment of the
However, the threaded
Fig. 17 shows a third variant of the design of the roll neck connected to the threaded ring. In this third embodiment, the rightward extension of the
Fig. 18 shows a fourth embodiment of the design of the
In all four exemplary embodiments of the cooperation of the
List of reference numerals
100 bearing locking device
110 screw ring
111 annular first section of a threaded ring
112 external screw thread
113 annular second section of a threaded ring
115 first threaded fastener
117 pressure ring stop
120 stop
120' clamp ring
120' bayonet type connecting piece
130 ring nut
132 internal screw thread
135 second threaded fastener
138 outer flange
140 pressure ring
150 spacer ring
152 spacer ring inner flange
160 load cell
170 auxiliary ring
190 backing ring
200 bearing
310 roll neck, especially the annular first section of roll neck
315 roll neck stop close to roll body
320 roll shoulder (the second section of the roll neck)
325 sliding key
326 axial grooves
330 roller body
R axial direction
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