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Патент USA US3050205

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Aug. 21, 1962
P. E|LER
3,050,195
TRAVELLING WALL CRANE
Filed May 31, 1961
2' Sheets-Sheet 1
/n vem‘ol”
PETER E/L ER
,5; WJQW
Aug. 21, 1962
P. EILER
3,050,195
TRAVELLING WALL CRANE
Filed May 31, 1961
2 Sheets-Sheet 2
//7ve/27‘or
PE TER E/LER
ilnited states; Patent
3,050,195
Patented Aug. 21, 1962
1
2
3,050,195
apparent upon reference to the accompanying description
when taken in conjunction with the following drawings,
wherein
TRAVELLING WALL CRANE
Peter Eiler, 35 Burgschmitstrasse, Nurnberg, Germany
Filed May 31, 1961, Ser. No. 113,784
Claims priority, application Germany June 1, 1960
'
K6
12 Claims.
FIGURE 1 is a side elevational view of the travelling
wall crane of this invention with the supporting wall struc
ture being shown in section;
FIGURE 2 is a sectional view, taken along the line
(Cl. 212-17)
The present invention relates to a travelling wall crane,
11-11 of FIGURE 1 to show a front elevational view of
more particularly, to a crane having a frame travelling
the frame;
along horizontal rails mounted on a vertical wall and a 10
FIGURE 3 is a sectional view, taken along the line
boom pivotally mounted on said frame for pivotal move
ment about a vertical axis.
The conventional travelling wall crane comprises a
frame which runs on three horizontally extending rails
III—III of FIGURE 2 to provide substantially a top plan
view of the travelling wall crane.
A speci?c embodiment of this invention will next be
described with reference to the accompanying drawings
mounted on a vertical structure, and a boom pivotally 15 wherein like reference symbols indicate the same parts
mounted on the frame so as to pivot about a vertical axis
throughout the'various views.
through an angle of about 180°. Such cranes having a
With particular reference to FIGURES l and 2 the
pivotally mounted boom require less space when travelling
since the boom may be positioned substantially parallel
to the wall.
Other forms of overhead cranes wherein the
boom is stationary always have the boom projecting and
accordingly this projecting boom limits the use of other
cranes in conjunction with these overhead cranes.
By
travelling wall crane comprises a frame 1 which is con
structed as an isosceles triangle. The frame 1 comprises
a base 1B which is parallel to the horizontal guide rails
and two side members 18 and IS’.
The lower ends of the sides 18 and 18' are connected
with the base member 1B at the intersections or angles A
utilizing the travelling wall crane having a pivoting boom
and B, respectively. The upper ends of the side members
one can mount a conventional overhead crane above this
boom and can cause the overhead crane to travel over the
wall crane. The overhead crane can have a boom which
18 and 18' are connected to form the apex joint generally
indicated at C. In order to obtain a high strength-to
extends across the entire width of the structure in which
of hollow members which are connected at their ends to
weight ratio the triangular frame may be constructed out
form an integral triangular frame.'
Travelling wall cranes generally comprise a substantial
At the joints A and B are mounted vertical travelling
ly rigidly constructed frame on which horizontally travel
wheels ‘2 which are driven through a reduction gearing 3
ling wheels are so positioned that a statically indetermi
which, in turn, is powered by a traction motor 4. i
nate four-point structure is established. The frame is gen
A pair of horizontally positioned travelling wheels 5 are
erally formed in the shape of a rectangle and has two ver
mounted
in bearing drums 6 which are welded to the drum
tically spaced shoulders at substantially its center for the 35 base member 1B. The travelling Wheels 5 receive hori
mounting of the boom.
zontal forces acting on the lower portion of the drum.
This construction, however, produces a considerable
The balancing lever 7 which is essentially in the form
bending strain of the frame, particularly when the boom
of a walking beam is pivotally supported about a vertical
forms an acute angle with respect to the crane runway 40 axis at the apex C of the frame. Horizontally positioned
when carrying a load. Because of the statically indeter
travelling wheels 8 are mounted at the ends of the lever 7.
minate support of the frame it is not possible to take ad
The vertical supporting forces acting against the frame
vantage of any allowable bending stresses since an unde
member are represented at one end of the frame by the
sirable deformation would accordingly result. In order
arrow D. The arrow D acts upon the travelling wheel 2,
to overcome these bending strains the weight of conven 45 which is so positioned at the angle A of the frame that
tional side wall cranes is comparatively high.
the force D acts through the intersection of the center
It is therefore the principal object of this invention to
lines E and F of the frame members 18 and 1B, respec
provide a novel and improved travelling wall crane.
tively. If, for ‘practical reasons, the wheels cannot be
positioned so as to obtain this precise relationship, it is
It is a further object of this invention to provide a light
weight travelling wall crane which has a greater load 50 then preferable that the wheels be positioned as close as
possible to the intersection of the center lines of these
capacity.
the cranes are mounted.
The present invention essentially comprises a travelling
wall crane which has a triangular-shaped frame with the
two frame members.
'
The boom of the crane is also constructed in a tri
angular form. The boom comprises an upper tension
bottom side thereof being parallel with respect to the hori
zontal guide rails. The travelling wheels mounted on the 55 member 9 and a lower compressive member 10 whose
frame and which receive vertical forces are so arranged
that the direction of these forces passes through or as close
as possible to the intersections of the frame members with
the bottom side. With this arrangement the frame is sub
ject to a relatively low bending strain and the forces are 60
inner ends are connected by a spacer or connecting mem
A statically determinate three-point support of the tri
angular frame can be easily obtained by supporting the
tively.
transmitted primarily in tension and compression.
frame at the three angles thereof.
This can be done by
ber 11. The connecting member 11 is formed so as to
have an outwardly bent portion 11A, as may be seen
in FIGURE 1. The’boom is pivotally mounted on the
frame at the bearings 12 and 13 which are positioned at
the apex and center of the frame member 1B, respec
In order to obtain a favorable transmission of forces
from the boom to the frame, the bracket supporting the
guiding the triangular frame on the upper guide rail 65 bearing 12 is'positioned on or as close as possible to the
apex C which will be the intersection of the center lines
through a horizontally positioned travelling wheel
of the frame sides 18 and IS’. The bracket supporting
mounted on the apex of the frame. ‘If this arrangement
the lower bearing 13 is positioned as close'as possible and
produces a load on the upper rail which is too great, a
preferably at the center of the base member 1B.' As a
balancing lever having horizontally travelling wheels at
its ends can be pivotally supported about a vertical axis at 70 result ‘of the construction the upper bearing 12 will re
c'eive‘ both vertical and horizontal forces whereas the
the apex of the triangular frame.
lower bearing 13 will receive only the horizontal forces.
Other objects and advantages of this invention will be
3,050,195
3
The boom is attached to the bearings by a fork connec
tion to avoid bending moments.
A light-weight boom which has a high load capacity
can be obtained if the components 9, 10 and 11 are con
structed from hollow members and interconnected at the
ends to form an integral, triangular-shaped boom.
In this form of a boom the lower forces are directly
divided into tension and compressive forces which are
transmitted to the bearings of the boom. The narrow
width of the boom, which can be ascertained by viewing 10
4
rails, a boom pivotally mounted on said frame for pivot
ing movement about a vertical axis, a plurality of wheels
on ‘said frame for supporting said frame on said rails,
two of said plurality of wheels being so positioned on
said one side of said frame so that the vertical forces
acting on said wheels passes through the intersections of
the ends of said one side with the lower ends of the other
two sides of said frame.
2. A travelling wall crane supported on horizontal
rails mounted on a vertical wall and comprising a tri
the boom from above as shown in FIGURE 3, enables
angular frame having one side parallel to the horizontal
the bearings to be positioned extremely close to the frame
rails, the sides of said triangular frame comprising hollow
1. An operator’s control cabin is mounted on one side
members, a boom pivotally mounted on said frame for
of the boom on the compressive member 10 thereof. The
pivoting movement about a vertical axis, a plurality of
cabin is so positioned that when the boom is pivoted in 15 wheels on said frame for supporting said frame on said
the direction of the cabin, the cabin will be positioned
rails, two of said plurality of wheels being so positioned
outwardly of the side 18 of the frame. As a result of
on said one side of said frame so that the vertical forces
this arrangement the hoisting cable guide is not obstructed
acting on said wheels passes through the intersections of
in any way.
the ends of said one side with the lower ends of the
At least three sides of the control cabin 14 are en
other two sides of said frame.
closed with transparent material so that the crane oper
3. A travelling wall crane supported on horizontal rails
ator has an excellent view in all directions regardless of
mounted on a vertical wall and comprising a triangular
the position of the crane.
frame having one side parallel to the horizontal rails,
The control cabin is constructed of the smallest pos
a boom pivotally mounted on said frame for pivoting
sible size and weight which would still enable the operator
movement about a vertical axis, a plurality of wheels on
to have su?icient room in which to operate the crane
said frame for supporting said frame on said rails, two of
both in the seated and standing positions. In addition to
said plurality of wheels being so positioned on said one
the ‘seat of the operator which is indicated at 14A the
side of said frame so that the vertical forces acting on
control cabin 14 contains various switches and operating
said wheels passes through the intersections of the ends
levers for directly controlling the crane. Additional elec
of said one side with the lower ends of the other two sides
trical devices are positioned on other members of the
of said frame, one of said plurality of wheels being
crane.
mounted at the intersection of said other two sides of said
The hoisting gear mechanism comprises a winch drum
frame for engagement with a horizontal rail.
15 ‘which is so positioned to partially surround a hoist
4. A travelling wall crane supported on horizontal
ing motor 16 and a reduction gear 17. The hoisting
rails mounted on a vertical wall and comprising a tri
mechanism is positioned Within the bend 11A of the
angular frame having one side parallel to the horizontal
boom connecting member 11. This construction provides
rails, a boom pivotally mounted on said frame for pivot
for an extremely low weight and a small space require
ing movement about a vertical axis, a plurality of wheels
ment. A hoisting cable 18 extends from the drum 15
' on said frame for supporting said frame on said rails, two
in two strands over cable pulleys 19 mounted on the 40 of said plurality of wheels being so positioned on said.
outer end of the boom. The cables then pass around a
bottom block 20 which carries a hook and then to a
one side of said frame so that the vertical forces acting
on said wheels passes through the intersections of the
balancing or adjusting pulley 21.
ends of said one side with the lower ends of the other
In order to pivot the boom with respect to the frame,
two sides of said frame, a lever mounted between its ends
a motor 22 and a reduction gear 23 driven thereby are vb at at the intersection of said other two sides for pivotal move
both mounted on the compressive member 10 in the cen
ment about a vertical axis, horizontally positioned wheels
tral plane of the boom. A semi-circular annular member
on the ends of said lever for engagement with a horizontal
24 is welded to the frame base 1B and has a toothed seg
rail.
ment 25 mounted thereon. A pinion gear 26 is driven
5. A travelling wall crane supported on horizontal
through the gearing 23 and meshes with the toothed seg 50 rails mounted on a vertical wall and comprising a frame
ment 25 so as to pivot the boom. The gear 26 is so
having one side parallel to the horizontal nails, a ?rst
positioned that it can be removed from below the annular
pivotal mount at the intersection of the other two sides of
member 24, as can be seen in FIGURE 2 of the drawings.
said frame, a second pivotal mount on said one side of
It is pointed out that the mechanism for pivoting the
said frame at the center line thereof, a boom pivotally
boom is positioned behind the hoisting mechanism in the 55 mounted on said ?rst and second mounts for pivoting
central plane of the boom when viewed from the pivotal
movement about a vertical axis so that said ?rst mount
‘axis of the boom. By arranging and constructing the
receives both vertical and horizontal forces .and said
hoisting and pivoting mechanisms as described above, the
second mount receives only horizontal forces, a plurality
distance between the pivoting axis of the boom and the
of wheels on said frame for supporting said frame on
frame can be relatively small. This not only reduces the
said rails, two of said plurality of wheels being so posi
space requirements for the crane but also considerably
tioned on said one side of said frame so that the vertical
reduces the force exerted on the frame.
forces acting on said wheels passes through the inter
Thus it can be seen that the present invention pro
sections of the ends of said one side with the lower ends
vides an extremely light-weight crane in which the forces
of the other two sides of said frame. '
acting thereon due to the load are so directed that the
, 6. A travelling wall crane supported on horizontal rails
stresses on the frame are maintained at a minimum.
It will be understood that this'invention is susceptible
to modi?cation in order to adapt it to different usages and
conditions and, accordingly, it is desired to comprehend
such modi?cations within this invention as may fall
within the scope of the appended claims.
What is claimed as this invention is:
l. A travelling wall crane supported on horizontal
rails mounted on a vertical wall and comprising a tri
mounted on a vertical wall and comprising a triangular
frame having one side parallel to the horizontal rails, a
boom pivotally mounted on said frame for pivoting move
ment about a vertical axis, said boom being triangular in
shape and having an upper tension member and a lower
compression member with an end member connecting the
ends of said upper and lower members at the pivotal
mount on said frame, a plurality of wheels on said frame
for supporting said frame on said rails, two of said
angular frame having one side parallel to the horizontal 75 plurality of wheels-being so positioned on said one side
3,050,195
6
of said frame so that the vertical forces acting on said
supporting said frame on said rails, two of said plurality
wheels passes through the intersections of the ends of said
of Wheels being so positioned on said one side of said
frame so that the vertical forces acting on said wheels
passes through the intersections of the ends of said one
side with the lower ends of the other two sides of said
frame.
11. A travelling wall crane supported on horizontal
one side with the lower ends of the other two sides of
said frame.
7. A travelling wall crane as claimed in claim 6 where
in said boom members are hollow.
8. A travelling wall crane supported on horizontal -
rails mounted on a vertical wall and comprising a tri
rails mounted on a vertical wall and comprising a trian
gular frame having one side parallel to the horizontal
angular frame having one side parallel to the horizontal
rails, a boom pivotally mounted on said frame for pivot 10 rails, a boom pivotally mounted on said frame for pivot
ing movement about a vertical axis, said boom being
ing movement about a vertical axis, said boom being tri
triangular in shape and having an upper tension member
angular in shape and having an upper tension member and
and a lower compression member with an end-member
a lower compression member with an end member con
connecting the ends ‘of said upper and lower members
necting the ends of said upper and lower members at the
pivotal mount on said frame, a plurality of wheels on said 15 at the pivotal mount on said frame, a plurality of wheels
on said frame for supporting said frame on said rails, two
frame for supporting said frame on said rails, two of
of said plurality of wheels being so positioned on said
said plurality of wheels being so positioned on said one
one side of said frame so that the vertical forces acting
side of said frame so that the vertical forces acting on
on said wheels passes through the intersections of the
said wheels passes through the intersections of the ends
of said one side with the lower ends of the other two 20 ends of said one side with the lower ends of the other
two sides of said frame, means in the plane of said
sides of said frame and a control cab mounted on one
side of said triangular boom.
9. A travelling wall crane supported on horizontal
rails mounted on a vertical wall and comprising a tri
triangular boom for pivoting said boom with respect to
said frame.
12. A travelling wall crane supported on horizontal
angular frame having one side parallel to the horizontal 25 rails mounted on a vertical wall and comprising a trian
gular frame having one-side parallel to the horizontal
rails, a boom pivotally mounted on said frame for pivot
rails, a boom pivotally mounted on said frame for pivot
ing movement about a vertical axis, said boom being
ing movement about a vertical ‘axis, said boom being
triangular in shape ‘and having an upper tension member
triangular in shape and having an upper tension mem- ‘
and a lower compression member with an end member
ber and a lower compression member with an end mem
connecting the ends of said upper and lower members
ber connecting the ends of said upper and lower mem
at the pivotal mount on said frame, said end member
bers at the pivotal mount on said frame, a plurality of
being bent outwardly of said boom, hoisting means for
wheels on said frame for supporting said frame on said
the crane positioned Within said outwardly bent end
rails, two of said plurality of wheels being so positioned
member, a plurality of wheels on said frame for support
ing said frame on said rails, two of said plurality of 35 on said one side of said frame so that the vertical forces
acting on said wheels passes through the intersections
wheels being so positioned on said one side of said frame
of the ends of said one side with the lower ends of the
so that the vertical forces acting on said wheels passes
other two sides of said frame, means in the plane of
through the intersections of the ends of said one side
said triangular boom for pivoting said boom with respect
with the lower ends of the other two sides of said frame.
10. A travelling wall crane supported on horizontal 40 to said frame, said pivoting means being mounted be
tween said hoisting means and the outer end of said
rails mounted on a vertical wall and comprising a trian
gular frame having one side parallel to the horizontal
rails, a boom pivotally mounted on said frame for pivot
ing movement ‘about a vertical axis, said boom being
triangular in shape and having an upper tension member 45
and a lower compression member With an end member
connecting the ends of said upper and lower members
at the pivotal mount on said frame, said end member
being bent outwardly of said boom, hoisting means for the
crane positioned within said outwardly bent end mem 50
ber, said hoisting means comprising a motor, reduction
gearing, and a drum partially surrounding said motor
and gearing, a plurality of wheels on said frame for
boom.
'
References Cited in the ?le of this patent
_
707,660
1,383,065
2,653,502
2,918,180
UNITED STATES PATENTS
Watlington ____________ __ Aug: 26, 1902
Biggert _____________ __ June 28, 1921
Meyer et al ___________ .._ Sept. 29, 1953
Kendall et a1. ________ __ Dec. 22, 1959
FOREIGN PATENTS
440,488
Germany _____________ __ Feb. 8,, 1927
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