Information
-
Patent Grant
-
6655956
-
Patent Number
6,655,956
-
Date Filed
Friday, July 19, 200221 years ago
-
Date Issued
Tuesday, December 2, 200320 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
-
CPC
-
US Classifications
Field of Search
US
- 432 206
- 432 227
- 432 2541
- 432 2542
- 432 253
- 266 252
- 266 264
- 266 262
- 266 263
-
International Classifications
-
Abstract
A support frame for metal coils, which are stacked on top of each other for a heat treatment by means of a hot, gaseous medium, especially in bell-type annealing furnaces, has devices on the support frame for guiding the flow of the medium through the coils. The support frame is a framework constructed of I-sections. The end surfaces of the coils are supported on the flanges of the framework I-sections. The webs of the framework I-sections are provided with holes, which serve for guiding the flow of medium.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention pertains to a support frame used to stack metal coils or rings on top of each other when they are to be subjected to a heat treatment by a hot, gaseous medium. The strip material of these coils must be annealed after its has been rolled or drawn in order to obtain the desired crystalline microstructure. For this purpose, the coils are stacked on top of each other in so-called bell-type annealing furnaces, for example, with the help of these support frames. The coils are annealed by a gas passing through the furnace or by hot air until the desired microstructure has been achieved. The support frames are intended to ensure the stacked coils are heated as uniformly as possible.
2. Description of the Related Art
The known support frames are complicated in their design. Aerodynamically shaped vane elements, which fan out from the center of the support frame, are used to guide the flowing medium through the coils. The hot medium is set into rotational motion by the vane elements. These support frames are expensive to produce. In addition, the known frames are relatively fragile and do not long withstand the harsh operating conditions which prevail in a rolling mill.
The invention is based on the task of developing a support frame of the general type indicated in the introductory clause of claim 1 for promoting the flow of the medium, this frame being both sturdy in design and producible at low cost. This is accomplished according to the invention by the measures listed in the characterizing clause of claim 1, to which the following special meaning belongs:
SUMMARY OF THE INVENTION
The invention is based on the task of developing a support frame of the aforementioned type for promoting the flow of the medium, this frame being both sturdy in design and producible at low cost. This is accomplished according to the invention by the following measures:
the support frame is a framework constructed of I-sections;
the end surfaces of the coils are supported on the flanges of the framework I-sections; and
the webs of the framework I-sections are provided with holes, which serve as means to guide the flow of medium.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a top view of one of two stacked metal coils at the level of a support frame according to the invention situated between them, namely, in the viewing direction of the cross-sectional line I—I through the stack shown in
FIG. 2
;
FIG. 2
shows a side view of the stack in the viewing direction of arrow II of
FIG. 1
;
FIGS. 3 and 4
show cross-sectional views through the support frame of
FIG. 1
along section lines III—III and IV—IV, respectively, the coil above and the coil below not being included in the diagram;
FIG. 5
shows a side view of a component part of the support frame shown in
FIG. 1
in the viewing direction of arrow V indicated there;
FIG. 6
shows a top view of a support frame according to the invention with a star insert;
FIG. 7
shows a top view of the star insert of
FIG. 6
;
FIG. 8
shows a side view of the start insert of
FIG. 7
; and
FIG. 9
shows a top view and two side views of the plate-shaped bracket.
DESCRIPTION OF PREFERRED EMBODIMENTS
The support frame consists of a framework
10
, which is made up of three crosspieces
11
of equal length
12
. Each of the crosspieces
11
consists of an I-shaped section
28
(
FIG. 3
a
), or various standard flat sections are welded together to form a framework section
28
with the overall shape of an “I” (
FIGS. 3
b,
3
c
) The framework
10
is located between two stacked coils
31
,
32
, which are supported by their end surfaces
30
on the framework section
28
. The web
23
of the framework section
28
has a row
24
of holes
25
, which are arranged essentially down the center line of the web
23
. As
FIG. 5
illustrates, the distance
26
between adjacent holes
25
is very small, for which reason a very closely spaced row
24
of holes is formed. The distance
26
can be smaller than the diameter
27
of the holes. The crosspieces
11
have a complex structure, which can be seen in
FIGS. 3 and 4
.
The I-shaped framework section
28
emphasized in
FIGS. 3 and 4
by shading consists of known standard profiles, e.g., such as the I-section shown in
FIG. 3
a.
FIG. 3
b
shows an I-shaped framework section
28
consisting of three flat sections
20
″,
20
′″,
20
″″. The two equally wide flat sections
20
′″,
20
″″ form the upper and lower flanges
44
,
45
of the framework section
28
. The third flat section
20
″, which is somewhat narrower in this exemplary embodiment, forms the web
23
of the overall framework section
28
. The components are joined preferably by welds
16
located on both sides of the end surfaces of the flat section
20
″.
Another possible embodiment of the framework section
28
is shown in
FIG. 3
c
. The framework section
28
consists here of two U-sections
20
,
20
′, arranged as mirror-images of each other, the U-webs
23
of which rest against each other. The webs
23
are provided with continuous series of holes
25
, which are aligned with each other. A common flat strip section
13
covers the top of these two component sections
20
,
20
′, and another common flat strip section
14
covers the bottom. These flat strip sections
13
,
14
are joined permanently to the U-sidepieces
21
,
22
; the flat strip sections
13
,
14
extend down the length of the framework crosspieces
11
. Edge zones
15
of the flat strip sections
13
,
14
project beyond the free edges
29
. The joints between the flat strip sections
13
,
14
and the U-shaped component sections
20
,
20
′ are created by welds
16
between the sidepiece ends
29
and the edge zones
15
of the strips.
As can be seen in
FIG. 1
, the framework
10
forms the outline of an equilateral triangle. The individual crosspieces
11
are mitred at the corners, as can be seen at
18
in FIG.
1
. In the corner areas
17
, furthermore, lugs
19
are present, which allow the framework to be attached to a crane. The crane serves to lift the coil
31
seated on the framework
10
and to remove it from the stack. The lugs project beyond the coil
31
supported on the framework
10
.
In the angle between two abutting framework crosspieces
11
, there is a corner plate
33
, which connects the two crosspieces
11
to each other. This is illustrated in
FIG. 3
c
by coarse dots. In addition, the framework crosspieces
11
are provided at certain points along their long sides facing the interior of the frame with plate-shaped brackets
34
, which, for the sake of clarity, are emphasized in
FIGS. 4 and 5
by fine dots. The corner plates
33
and the brackets
34
lie essentially in the same plane as the flanges
44
,
45
or of the flat strip sections
13
,
14
of the overall I-section
28
. In the present case, the brackets
34
are located at the center of the length of the crosspieces
11
and point toward the center of the triangle. The brackets
34
also serve to cover or support the inner turns of the coil
31
,
32
in question. Both the corner plates
33
and the brackets
34
are provided with various support elements
35
-
37
.
The support element
35
for the corner plate
33
consists of an essentially vertical bracket plate
35
, which, as can be seen in
FIG. 3
c
, almost completely fills up the free space in the overall section
28
. Thus, the end
38
of the bracket plate
35
fits into the space between the two U-sidepieces
21
,
22
of the component section
20
and extends all the way to the U-web
23
′. The brackets
34
are also supported from underneath by bracket plates
36
. For stiffening, it is also possible to provide a block
37
at this point. The two bracket plates
35
,
36
are provided with slit-like or round openings
39
, which promote the flow of the medium, as already mentioned above.
As can be seen in
FIG. 3
c
, the corner plates
33
can be provided on both the upper and the lower flat strip sections
13
,
14
. These corner plates
33
and the brackets
34
can be of the same thickness
40
, which is essentially the same as the thickness
41
of the two flat strip sections
13
,
14
or of the flanges
44
,
45
of the framework I-section
28
.
FIG. 6
shows an additional example of a support frame according to the invention with a framework
10
′. In the angle between two abutting framework crosspieces
11
, there is a corner plate
33
, which connects two crosspieces
11
together. In addition, the long sides of the framework crosspieces
11
facing the interior of the framework are provided with plate-shaped brackets
34
at the center point of their length.
In this case, a star insert
43
is provided to give additional support to the coils
31
,
32
(not shown in this figure). The branches
47
of the star insert
43
extending from the center of the star terminate at the plate-shaped brackets
34
, where they are supported. So that the star insert
43
can be attached to the brackets
34
, the thickness of the ends
46
of the star insert branches
47
is reduced by a step-like recess, and a hole
51
is made through the end. The ends
46
fit into a shaped cavity
50
in the bracket
34
. This shaped cavity
50
is bounded on the sides by the block
37
and the bracket plate
36
. A hole
49
is also provided in the bracket plate
36
of the bracket
34
. The ends
46
of the star insert branches
47
are pushed into the shaped cavity
50
until the hole
51
in the star insert branch
47
and the hole
49
in the bracket plate
36
are aligned; suitable connecting means can pass through these holes to fasten the two components together.
The star insert
43
lies essentially on the same plane as the flanges
44
,
45
of the framework I-section
28
.
LIST OF REFERENCE NUMBERS
10
framework
10
′ framework
11
crosspiece of
10
12
crosspiece length of
11
13
flat strip section of
11
at
21
14
flat strip section of
11
at
22
15
edge zone of
13
,
14
16
weld
17
corner area of
10
18
mitred cut at
17
lug on
17
20
,
20
′ U-section, component part of
28
20
″,
20
′″,
20
″″ flat section, component part of
28
21
first U-sidepiece of
20
,
20
′
22
second U-sidepiece of
20
,
20
′
23
web of
28
23
′ U-web of
20
,
20
′
24
row of holes (
FIG. 5
)
25
hole in
23
,
23
′
26
distance between
25
(
FIG. 5
)
27
hole diameter of
25
28
framework section, overall section
29
free sidepiece end of
21
,
22
(
FIG. 3
c
)
30
end surface of
31
,
32
(
FIG. 2
)
31
upper coil (
FIG. 2
)
32
lower coil (
FIGS. 1
,
2
)
33
corner plate
34
plate-shaped bracket
35
support element for
33
, bracket plate
36
support element for
34
, bracket plate
37
support element for
34
, block
38
plate end of
35
(
FIG. 3
c
)
39
opening in
35
,
36
40
thickness of plate
33
,
34
(
FIG. 3
c
,
FIG. 5
)
41
thickness of flange
44
,
45
(
FIGS. 3
a
,
3
b
)
42
flow arrow
43
star insert
44
upper flange of
28
45
lower flange of
28
46
end of
43
47
star insert branch
48
recess in
46
49
hole in
36
50
shaped cavity
51
hole in
46
Claims
- 1. Support frame for metal coils (31, 31) which are stacked on top of each other for a heat treatment by means of a hot, gaseous medium, especially in bell-type annealing furnaces,with means on the support frame for guiding the flow (42) of the medium through the coils (31, 32), wherein the support frame is a framework (10, 10′) constructed of I-sections; the end surfaces (30) of the coils (31, 32) are supported on the flanges (44, 45) of the framework I-sections (23); and the webs (23) of the framework I-sections (28) are provided with holes (25), which serve as means to guide the flow of medium (42).
- 2. Support frame according to claim 1, wherein the framework (10, 10′) consists of three framework crosspieces (11) and has a triangular outline.
- 3. Support frame according to claim 2, wherein the triangular framework (10, 10′) is formed out of framework crosspieces (11) of equal length (12).
- 4. Support frame according to claim 1, wherein the holes (25) are arranged in a row (24) extending essentially down the center of the length of the webs (23, 23′).
- 5. Support frame according to claim 1, wherein the distances (26) between the holes (25) are smaller than or equal to the diameters (27) of the holes.
- 6. Support frame according to claim 1, wherein the I-shaped framework section (28) is constructed out of three flat sections (20″, 20′″, 20″″), where the flat section (20″) forms the web (23), and the flat sections (20′″, 20″″) form the flanges (44, 45) of the framework section (28).
- 7. Support frame according to claim 6, wherein the joint between the flat section (20″) and the flat sections (20′″, 20″″) consists of welds (16), which are arranged on both sides of the two end surfaces of the flat section (20″).
- 8. Support frame according to claim 1, wherein the framework section (28) is constructed out of two U-sections (20, 20′), arranged as mirror images of each other, where the U-sidepieces (21, 22) of the two component sections (20, 20′) face away from each other.
- 9. Support frame according to claim 8, wherein the U-webs (23′) of the two U-sections (20, 20′) rest against each other, and in that the holes (25) in the two U-webs (23′) are aligned with each other.
- 10. Support frame according to claim 8, wherein a common flat strip section (13) covers the tops of the two U-sidepieces (21, 22) of the component sections (20, 20′), whereas another common strip section (14) covers the bottoms, the flat strip sections extending along the length of the framework crosspieces (11), and in that the flat strip sections (13, 14) are permanently joined to the two U-sidepieces (21, 22) of the two component sections (20, 20′).
- 11. Support frame according to claim 10, wherein edge zones (15) of the flat strip sections (13, 14) project beyond the free ends (29) of the two sidepieces (21, 22), and in that the flat strip sections (13, 14) are joined to the two U-sidepieces (21, 22) by welds, which are located between the edge zones (15) and the end surfaces of the U-sidepieces (21, 22).
- 12. Support frame according to claim 1, wherein the framework sections (28) are mitred (18) in the corner area of two abutting framework crosspieces (11).
- 13. Support frame according to claim 1, wherein the framework has corner areas (17) and wherein lugs (19) for the attachment of a crane or the like are located in the corner areas (17) of the framework (10, 10′), the lugs (19) projecting radially beyond the circumference of the coil (31) supported on the framework (10, 10′).
- 14. Support frame according to claim 1, wherein the framework has crosspieces and wherein, in the angle between two abutting crosspieces (11), a corner plate (33) is provided, which connects the two crosspieces (11) together.
- 15. Support frame according to claim 14, wherein the framework crosspieces (11) are provided at certain points along the long sides facing the interior of the framework with plate-shaped brackets (34), which support the end surface (30) of the coil (31) resting on the framework (11).
- 16. Support frame according to claim 15, wherein the plate-shaped brackets (34) and/or the corner plates (33) have a thickness (41, 40) which is essentially the same as that of the flanges (44, 45).
- 17. Support frame according to claim 15, wherein the plate-shaped brackets (34) and/or the corner plates (33) have a thickness (41′, 40) which is essentially the same as that of the flat strip sections (13, 14).
- 18. Support frame according to claim 15, wherein the brackets (34) are located essentially at the center of the length of the crosspieces (11) of the triangular framework (10, 10′).
- 19. Support frame according to claim 18, wherein the bracket plate (36) has a hole (49) for the attachment of a star insert (43).
- 20. Support frame according to claim 18, wherein the brackets (34) comprise a block (37), which in combination with the bracket plate (36) forms a shaped cavity (50).
- 21. Support frame according to claims 18, wherein the brackets (34) are connected to the branches (47) of the star insert (43), where the star insert (43) lies essentially on the same plane as the flanges (44, 45) of the framework sections (28).
- 22. Support frame according to claim 21, wherein the thickness of the ends (46) of the star insert branches (47) is reduced by a step-like recess (48), and in that the end (46) is provided with a hole (51).
- 23. Support frame according to claim 22, wherein the ends (46) fit into the shaped cavity (50) of the bracket (34) and in that the hole (49) in the bracket (34) is aligned with the hole (51) in the star insert branch (47) so that the two can be connected.
- 24. Support frame according to claim 15, wherein the plate-shaped bracket (34) and/or the corner plate (33) are provided with support elements (35-37), which fit into the interior of the framework sections (28).
- 25. Support frame according to claim 24, wherein the support elements consist of bracket plates (35, 36), extending essentially in the vertical direction, which fit between the flanges (44, 45) and extend essentially all the way to the web (23).
- 26. Support frame according to claim 25, wherein the bracket plates (35, 36) have openings (39) for the flow of medium.
- 27. Support frame according to claim 14, wherein the corner plate (33) and/or the bracket (34) lie essentially on the same plane as the flanges (44, 45) of the framework sections (28).
Priority Claims (1)
Number |
Date |
Country |
Kind |
100 04 479 |
Feb 2000 |
DE |
|
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/EP01/00873 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO01/57282 |
8/9/2001 |
WO |
A |
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
1193526 |
Sep 1963 |
DE |
2742844 |
Mar 1979 |
DE |
2116691 |
Dec 1970 |
FR |