close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3080657

код для вставки
March 12., 1963
3,080,647
L. D. WARREN
APPARATUS Foa DEcHocKING AND cHocKING MILL RoLLs
Filed May 11, 1961
4 Shee s-Sheej'l
' è:
Q
_" l
_
Q
l?
Q
.
ä
\
_
, ENQM.mkQW%\\
xm.“QQull|
à.Q
QN
. _..
‘D
In
m ‘LP
\
ne»
vm._mw
Èm».__
w
N/
äl
‘r2
N
03
N
«la
HVVE'NTOR
LOYAI. D. WARREN
M26’A flor/lay’
March 12, 1963
L. D. WARREN
3,080,647
APPARATUS FOR DECHOCKING AND CHOCKING` MÍLL ROLLS
Filed May l1, 1961
4 Sheets-Sheet 2
_
_
_
k\_f
_"_
=
l.
.l
"_
mm
ä__
__
II
___
__HI lnIH
__
__
__
I|.S
__
__
__
N\
_"
_I_I
__
__
_l
___
__m<
__
Q
WQQ
wm
Nw.l
W0. ¿NRmm.NR
@maß/92%;
Aller/rey
L
M
March l2, 1963
' L.. D. WARREN
3,080,647
APPARATUS FOR DECHOCKING AND CHOCKING MILL ROLLS .
Filed May l1, 1961
4 Sheets-Sheet 3
/NVENTÜR
LOYAL D. WARREN
A/forney
March 12, 1963
L. D. WARREN
3,080,647
APPARATUS FOR DECHOCKING AND CHOCKING MILL ROLLS
ice
1
2
12’ and tail shaft 13’. The chains 11 are made up of
links 14 and 14’ with roll saddles l5 at intervals there
3,980,647
APPARATUS FOR DECHOCKING AND
CHOCKING MÃLL RÜLLS
along. The links and saddles have supporting rollers 16
journaled on their link pins. The conveyor is installed
in a pit 17 and beams I8 bridging the pit support rails
19 on which the rollers of the link and saddles of the
~
Loyal D. Warren, Easley, Birmingham, Ala., assigner to
- y United States Steel Corporation, a corporation of New
.lersey
3,56%,547
Patented lidar. l2, i963
.
upper runs of the chains travel. The rollers of the lower
runs travel on rails Ztl in pit 17. Sprockets l2 are driven
in such direction as to advance the chains from left to
Filed May 11, '1961, Ser. No. 169,285
1l Claims. (Cl. 29-252)
This invention relates to apparatus for removing the 10 right by a motor 2l through a speed reducer 22 and
checks and the coupling from mill rolls and replacing
gearing 23. Worn rolls with chocks thereon and re
dressed rolls ready for replacement of chocks thereon
them thereon.
'
It is necessary to change the work-rolls of metal
are deposited alternately in successive pairs of alined
rolling mills from time to time, to permit redressing of
saddles 15 by an overhead crane. In FIGURE 3 is
shown in chain lines so disposed, a roll 24 having a
the roll bodies when they have become worn and rough
The rolls are ordinarily removed from the
chock 25 on eac-h neck and a coupling 26 on the drive end.
mill housings with the coupling on the drive end and
ened in use.
Dechocking and checking carriages 27 and 27’ are co
axially disposed, one on each side of conveyor l0, for
travel from and toward the latter. For this movement,
the carriages yare fitted with wheels 23 traveling on rails
29. As shown in FIGURE 3, the carriages are generally
both bearing chocks on the roll necks. The coupling
and chocks must then be removed from the rollbefore
redressing can be started. This t-ask is usuall performed
by the aid of an overhead crane but is difficult, awkward
and time-consuming. It is accordingly the object of my
invention to ‘provide apparatus for easily, quickly and
similar in construction (with certain exceptions which
will be pointed out later) so a description of one will
largely suñ‘ice. Each includes a box frame 30 fabricated
mounted roll and for similarly replacing them on a re 25 from plate, having a motor-mounting bracket 31 on the
outer end thereof and incorporating a tank 32. A motor
dressed roll thereby making it ready to go back in the
33 on the bracket drives a pump 34 which delivers liquid
mill.
under pressure from tank 32 to various hydraulic-power
In a preferred embodiment, my apparatus comprises a
means on the carriage. For the sake of clarity, the pipe
conveyor having saddles spaced therealong adapted to
30
connections between such means and the pump Iand tank
receive rolls disposed transversely of the conveyor, and
have been omitted from the drawings as Well as the flex
opposed coaxial chock carriages, movable transversely of
ible cables for supplying electric power to the motor.
the conveyor, one on each side thereof. Each carri-age
Movement of carriage 27 along rails 29 is effected by
has a 'chock-receiving lift thereon, movable vertically and
a fluid-pressure cylinder 35 mounted below the frame and
provided with means for binding thereto the chock on one
having its piston rod 36 connected to a fixed anchorage
of the necks of a roll alined with the carriages. One of
37. Cylinder 35, and auxiliary devices operated by hy
the carriages has a coupling carriage movable thereon
provided with pulling means engageable with the coupling
draulic pressure, to be described later, are controlled by
valves 38 easily accessible to an operator standing on
on the drive end of the roll, and spaced coupling-support
platform 39 and riding on the carriage.
ing rollers, whereby the coupling may be pulled before
the chocks are removed. 'The other carriage has roll
At its inner end, the carriage frame has spaced Walls
bumping means thereon for dislodging sticking chocks if
4f) (FIGURE 4) and 4l (FIGURE 3) defining a box or
socket in which a chock lift 42 is vertically reciprocable.
such condition should occur. Both carriages are fitted
The lift has a platform 43 and a depending skirt with
with wheels traveling ‘along rails normal to the path of
walls 44 sliding Within walls 49 and 4l. A fluid-pressure
the conveyor and are provided with power means for
45 cyclinder 45 is mounted on bars 46 extending between
reciprocating them.
walls 4l. The piston rod of the cylinder has a rounded
A complete understanding 4‘of the invention may be
head 47 engaging a bearing pad 48 on the bottom of the
obtained from the following detailed description and ex
efficiently removingthe coupling and chocks from a de
platform. Thus the lift is wholly incorporated in the
carriage and forms an integral part thereof.
planation which refer to the accompanying drawings illus
trating the present preferred embodiment. In the draw
ings:
50
On one side of each carriage adjacent lift 42, a cross
head 49 (FIGURE 4) is reciprocable vertically in ways
FIGURES la, lb and lc together constitute a plan
view;
50 by a fluid-pressure cylinder 51.
FIGURE 2 is a partial vertical section taken along
the plane of line II-II of FIGURE 1b;
is connected at one end to a fixed anchorage 53 on one
A flexible strap 52
side of platform 43 and is adapted to hold a chock 25
FIGURE 3 is a transverse vertical section taken along 55 thereon. The other end of the strap has chain links 54
thereon for adjustable and releasable connection to a
the plane of line III-III of FIGURES la and lc with
fork 55 on crosshead 49. When the strap has been
parts omitted;
placed about a chock resting on pads 43' on platform
FIGURE 4 is a section through the coupling Iand chock
handling carriage taken along the plane of line IV-IV
of FIGURE la;
60
43 and the links 54 engaged with fork 55, operation of
cylinder 5l to pull the crosshead down tightens the strap
about the chock `and binds it firmly to the lift platform
43.
Carriages 27 and 27’ are substantially identical in
FIGURE 6 is an elevation thereof; and
respect to the details described above. They differ in
FIGURE 7 is a section therethrough taken along the
plane of line VII-_VIVI of FIGURE 5, with parts shown 65 that carriage 27 has a coupling-pulling carriage 56 there
on and carriage 27' has a roll bumper 57 thereon.
in elevation.
Bumper 57 consists of a deck 5S elevated above tank 32
Referring now in detail to the drawings and, for the
on which a hammer 59 is slidable in a bearing 6i?. A
present, particularly to FIGURES la, lb, lc and 2, my
fluid-pressure cylinder 61 is secured on deck 58 in aline
dechocking and cho-cking apparatus includes la convey-or
10 composed of spaced chains 1l trained around head 70 ment with the hammer for actuating it into engagement
' FIGURE 5 is a portion of FIGURE la, viz., the cou
pling carriage, to enlarged scale;
sprockets l2 and tail sprockets 13 secured to head shaft
with the end of a roll on conveyor 10.
3,030,647
3
Coupling~pulling carriage 56 comprises a wheeled
frame 62 fabricated from plate traveling on rails 63
Although I have disclose-d herein the preferred embodi»
33. The piston rod of cylinder 64 is pivoted to a plate
a conveyor saddles spaced therealong, adapted to sup
ment of my invention, I intend to cover as well any
change or modification therein which may be made with
secured on tank 32 of carriage 27. Carriage 56 has
out departing from the spirit and scope of the invention.
spaced side Walls 62’ and is actuated to and fro on car
I claim:
riage 27 by means of a fluid-pressure cylinder 64 mounted 5
l. The combination with
on a bracket 65 above tank 32 and overhanging motor
66 upstanding in frame 62 and secured to a vertical trans
verse wall 67 of frame 62 (FIGURES 5 and 6). A nut
block 66a is set in wall 67 and secured to it and plate 10
66. A bearing disc 68 has a central screw threaded into
a tapped hole in block 66a and has studs 69 projecting
rearwardly from its periphery to facilitate manual rota
tion. Coupling-engaging hooks 70 fit loosely in slots in
wall 67 and are held therein by keys 71.
15
Frame 62 has spaced transverse walls 72 extending
between side walls 62’. Coupling-supporting rollers 73
are journaled in bases 74 slidable on walls 72.
A scew
shafts 75 (FIGURE 7) extends through nuts 76 depend
ing from bases 74 and has oppositely threaded portions 20
engaging them. The shaft is journaled in bearings 77 and
77' and extends outwardly of frame 62 through the hub
of a hand wheel 79 journaled in one wall 62’. A hand
wheel 80 is mounted on the end of shaft 75. Bearing 77
is fixed to an inner frame '78. Bearing 77’ is also mounted
on frame 7S.
The hub of wheel 79 is threaded into a
tapped socket S1 secured to the frame 78 and is journaled
in a thrust bearing 82 in wall 62’. Thus rotation of
wheel 79 moves both bases in the same direction for
centering and rotation of wheel Stì moves bases 74 toward
and from each other for spacing adjustment.
The operation of my appapartus will probably be
apparent but will now be brieily summarized. When
worn and redressed rolls have been placed in successive
saddles 15, conveyor 10 is advanced until the worn roll
with a coupling and chocks thereon is alined with car
riages 27 and 27'. These carriages will, of course, be
in retracted postions with lifts 42 lowered and carriage
56 retracted. Carriages 27 and 27’ are then advanced
port rolling-mill rolls disposed transversely of the
conveyor with their necks overhanging,
of means for pulling a bearing chock from the neck at
one end of a roll so disposed, including a carriage
movable toward and from said conveyor from a
location at one side thereof,
power means for reciprocating said carriage,
a vertically movable chock supporting platform on
said carriage, power means for raising and lowering
said platform, and
means for securing a chock to said platform whereby
retraction of the carriage serves to pull the chock
so secured from the roll neck.
2. The combination with
l
a conveyor having saddles spaced therealong, adapted
to support rolling-mill rolls disposed transversely
of the conveyor with their necks overhanging,
of means for pulling a bearing chock from the neck at
one end of a roll so disposed, including a carriage
movable toward and from said conveyor from a loca
tion at one side thereof,
power means for reciprocating said carriage,
chock-supporting means on said carriage and
means for securing a chock to said supporting means
whereby retraction of the carriage serves to pull the
chock so secured for the roll neck, said securing
means including a tensions band, a cross-head re
ciprocable on said carriage for tightening said band
and power means for actuating said cross-head.
3. The combination defined in claim l, characterized
by said securing means including flexible means for bind
ing a chock to said platform and power means for actuat
toward the roll and carriage 56 is advanced toward cou 40 ing said binding means.
4. The combination defined in claim l, characterized
pling 26 with hooks 70 spread. When rollers 73 are
by said securing means including a cross-head reciproca
beneath the coupling, they are adjusted for spacing, hooks
ble on said carriage.
70 are engaged therewith and disc 68 is spun to screw it
5. The combination deñned in claim 1, characterized
inwardly into engagement with the coupling end. There
after carriage 56 is retracted to pull the coupling off 45 by a skirt depending from said platform and a socket iu`
of the drive end of the roll while supported on rollers
73.
Lifts 42 are then raised until pads 43' engage chocks
25. Straps 52 are laid over the chocks, chain links 54
engaged with forks 55 and cylinders 51 operated to tight 50
en the straps.
Carriages 27 and 27’ are then retracted
from their positions adjacent conveyor 10, pulling the
chocks from the roll necks. If sticking of either chock
occurs, a blow on the end of the roll neck by hammer
59 is usually suñicient to loosen it. When the carriages
27 and 27' have been retracted so that the chocks clear
the ends of the roll, the latter may be lifted by an over
head crane and transported to a redressing lathe.
Conveyor 10 is next advanced to bring the redressed
roll thereon in line with carriages 27 and 27’. By a 60
reverse sequence of the operations described above,
chocks 25 and coupling 26 are placed on the redressed
roll and it is then ready to be installed in the mill by an
overhead crane.
It will be evident from the foregoing that my inven 65
tion provides apparatus well adapted to overcome the
diñîculties and danger heretofore experienced in dechock
ing and checking rolls. Both chocks and the coupling
are withdrawn by a straight pull and replaced by an
axial thrust. The apparatus, furthermore, is simple yet 70
sutliciently powerful to handle the chocks of the largest
rolls to be redressed. Each of the carriages 27 and 27’ is
self contained except for the electric-power supply. The
carriages and conveyor are easily controlled with the
necessary precision.
75
said carriage slidably receiving said skirt.
6. The combination with
a conveyor having saddles spaced therealong, adapted
to support rolling-mill rolls disposed transversely of
the conveyor with their necks overhanging,
of means for pulling a bearing chock from the neck at
one end of a roll so disposed, including a carriage
movable toward and from said conveyor from a
location at one side thereof,
power means for reciprocating said carriage,
chock-supporting means on said carriage, and
means for securing a chock to said supporting means
whereby retraction of the carriage serves to pull
the chock so secured from the roll neck, said chock
ysupporting means including a vertically movable
platform and power means for raising and lower
ing it.
7. 'Ihe combination with
a conveyor having saddles spaced therealong, adapted
to support rolling-mill rolls disposed transversely
of the conveyor with their necks overhanging,
of means of pulling a bearing chock from the neck at
one end of a roll so disposed including a carriage
movable toward and from said conveyor from a
location at one side thereof,
power means for reciprocating said carriage,
chock-supporting means on said carriage, and
means for securing a chock to said supporting means
whereby retraction of the carriage serves to pull
the chock so secured from the roll neck, a hammer
3,080,647
6
reciprocably mounted on said carriage adapted for
ing carriage movable toward and from the conveyor
along a path normall thereto, coupling-receiving means
striking one end of a roll on said conveyor and
power means for actuating the hammer.
on said carriage, a transverse plate upstanding on said
carriage, a pair of coupling-pulling hooks projecting from
said plate toward the conveyor above said means, and
8. Mill-roll dechocking and checking apparatus com
prising
a conveyor, saddles spaced along the conveyor adapted
to receive mill rolls disposed transversely on the
power means for reciprocating said carriage, said cou
pling-receiving means being a pair of parallel rollers
mounted for movement transversely of said path.
conveyor,
11. Apparatus for removing and replacing mill-roll
a pair of rails on each side of the conveyor normal
thereto,
10 drive couplings comprising a conveyor adapted to sup
carriages, one on each side of the conveyor traveling
on said pairs of rails, respectively,
power means for moving each carriage toward and
from the conveyor,
port a roll disposed transversely thereon with its necks
projecting laterally from the conveyor, a coupling~pulling carriage movable toward and from the conveyor
along a path normal thereto, coupling-receiving means
a chock lift on the end of each carriage adjacent said 15 on said carriage, a transverse plate upstanding on said
conveyor, each lift being wholly incorporated in its
carriage and forming an integral part thereof,
power means for raising and lowering said lifts, and
carriage, ‘a pair 4of: coupling-pulling hooks projecting
from said plate toward the conveyor above said means,
a bearing disc between said hooks, means mounting said
means for securing to each lift a chock for removal
disc on said plate for movement relative to said car
from or placement on one end of a roll disposed on 20 riage along said path, and power means for reciprocating
one of said saddles when the conveyor is stopped
said carriage.
with said last-mentioned roll in alinement with said
carriages.
9. Apparatus as deñned in claim 8, characterized by
a coupling-pulling carriage movable along one of said 25
iirst-mentioned carriages, power means for moving said
coupling-pulling carriage, coupling supporting means on
said coupling-pulling carriage and coupling-engaging
hooks on said coupling-pulling carriage extending above
said coupling supporting means.
30
10. Apparatus for removing and replacing mill-roll
drive couplings comprising a conveyor adapted to sup
port a roll disposed transversely thereon with its necks
projecting laterally from the conveyor, -a coupling-pull
UNITED STATES PATENTS
References Cited in the tile of this patent
759,360
1,094,978
1,292,429
1,865,420
1,924,740
2,401,592
2,696,040
2,738,082
2 906 G12
Flagler _____________ -_ May 10, 1904
Church _____________ _.. Apr. 28, 1914
Bull ________________ _- Ian. 28, 1919
Kick _______________ __ June 28, 1932
Harry et al. __________ _.. Aug. 29, 1933
Von Stocker _________ __ June 4, 1946
Crom et al. __________ __ Dec. 7, 1954
Vernon _____________ _.. Mar. 13, 1956
Rothfuchs et a1. ...... _.. Sept. 29, 1959
UNITED STATES PATENT OFFICE
-CERTIFICA'I‘E> OE CORRECTION
PatentvNm 3„o8o„647
I
March 129 v196g,
Loyal DL74 waeren
v
i
lt is hereby certified that error appears in the above numbered pat
ent requiring correction and that the said Letters Patent should read as
corrected below.
'
'
Column 3, line lö‘7 forl "scew" read m eoffew «m5 line l9`ì
for "shafts" read e“ shaft m; column 4HI line 7g after
"conveyor" insert «m having w; line 33q for "for" read
-~»- from ee; line 67Y for "'of"„ second ooou'rlf‘elflceg read
«w
for
‘ma
v
Signed and seale'üí. this lst dayJ of October 1963o
(SEAL)
Attest:
_ERNEST w. SWIDER
Attesting Officer
’
DAVID LLADD
Commissioner of Patents
Документ
Категория
Без категории
Просмотров
0
Размер файла
653 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа