close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2411263

код для вставки
Nov. 19, 1946.
2,411,263
P. R. GUERIN ETAL
INDUSTRIAL I TRUCK
Filed Aug. 13, 1945
3 Sheets-_-Shee‘p l
Pom/1
1
47
H6 1
Z
I_INVFJVTOR$
Nov. 19, 1946.
P. R. GUERIN EI'AL
2,411,263
INDUSTRIAL ‘TRUCK
F‘lled Aug
15
1945
‘F1622
3 Sheets-Sheet 2
'
INVENTORS
_ BY
M (W I
“
Nov. 19, 1946.
2,41 1,263
P. R GUERIN ET AL
INDUSTRIAL TRUCK
Filed‘ Aug. 15.. 1945
s Sheéts-Shéet s
25
-
fr..
A
________7.\_.___
/
T
43 42
F16. 5
M1?
5‘ INIfENTORS‘,
-
BM’
"M
'
Patented Nov. 19, 1946
2,411,263 _
)
UNITED STATES PATENT OFFICE
2,411,263
INDUSTRIAL TRUCK
>
Paul R. Guerin and Herman Musgrave, East
Cleveland, Ohio, assignors to Towmotor Cor
poration, Cleveland, Ohio, a ‘ corporation of
Ohio
vApplication August 13', 1945, Serial No. 610,408
14 Claims. (Cl. 21'_l-—,113)
.
-
,1
This invention relates to industrial trucks, and
more particularly to means carried by said trucks
for receiving and raising a load upon a carriage
assembly and for changing the position of the
erally the forward end of the body of an indus
trial truck, I I one of the front wheels of the same, 1
' and I2 one of a pair of side members of the frame
behind which are located the corresponding arms
(not shown) which enables the mast to be ‘tilted
from a vertical position. Each of the side mem
load~carrying member of said assembly thereby '
- to facilitate depositing the load in any desired
position and location. It is the general object of
our invention to provide simple and effective
bers of the mast has secured to the lower portion
thereof a hook‘ l3 by which the mast is pivotally
a power operated mechanism for accomplishing the
supported from a, cross bar “I which in turn may
aforesaid movements of the carriage assembly and 10 be-supported by part of the front driving axle
its load-carrying member. A further object of
(not shown) in the manner illustrated and de
the invention is to enable all of these operations
to be readily and e'?ectively controllable by the
operator.
scribed in the patent to E. W. Weaver, No.
2,299,445, issued October 20, 1942. .
I5 denotes generally the front plate of the sup
A still further and more limited object of the 15 porting member of the carriage assembly from
invention is to provide hydraulically operated means whereby the load-carriage assembly may
be raised and lowered along the mast and rotary
movement may be imparted to the load-carrying
member of said assembly thereby to facilitate 20
depositing the load carried thereby in any desired
'
position or location.
-
opposite sides of which guide plates l6 project
rearwardly and engage the inner surfaces of the
channeled side members of the mast-see Fig. 4.
These guide plates carry upper and lower rollers
which are adapted to engage the front and rear
?anges respectively of the channeled side mem-‘
bers of the auxiliary mast, the upper pair of roll
Further and more limited objects of the inven
tion will be set forth in the speci?cation and will
ers being shown at I‘! in Fig. 4 as engaging the
front ?anges of the channeled side members l8
be realized in and through the construction and 25 of the auxiliary mast which are telescoped within,
arrangement of parts shown in the drawings
the channeled side members I9 of the main mast.
hereof wherein Fig. 1 represents a side eleva
2| denotes the main hoisting cylinder which is
tional view of the front portion of an industrial
located between the sides of the mast and within
truck and the mast thereof and showing the
which the plunger 22 is mounted, said plunger
carriage assembly and the ‘hoisting and tilting
mechanism for the carriage assembly constructed
30 carrying a cross head 23 at its upper end.
The
‘cross head is provided with a pair of ears 24 ex
in accordance with our invention, a'position of ‘ - tending upwardly therefrom and adapted to en
the carriage when elevated being indicated by
gage the cross tie 25 which connects the tops of
broken lines and the front portion of the truck
the side members l8 of the auxiliary mast. A
being represented diagrammatically; Fig. 2 a, 35 yoke 26 is shown as connected to the webs of the
front elevational view of the mast, carriage
channeled members of the main mast and as
as-sembly and hoisting and tilting mechanism
extending across the rear of the same.
shown in Fig. 1 and showing the rotatable load
The construction thus far described is substan
receiving member of saidv assembly in a load
tially identical with that which has been employed
receiving position; Fig. 3 a view similar to Fig. 2 40 by Towmotor Corporation in its production of
and showing the rotatable carriage member ele
industrial trucks, and hence needs no further
.vated and also tilted to a position whereby a load
description.
.
thereon may be conveniently discharged at a de
The rotatable. carriage member comprises gen
sired angle; Fig. 4 a detail in section correspond
erally a framework consisting of an upper spacer
ing to the line 4-4 of Fig. 1 and looking in the 45 bar 21, vertical side bars 28, centrally located '
direction of the arrows; Fig. 5 a diagrammatic
vertical reinforcing ‘bars 29, with an upper cross
view of the means for controlling and supplying
liquid to the auxiliary cylinders which constitute
part of the means for realizing my invention; and
plate 30 and a lower cross plate 3| connected to
the vertical bars 28 and 29.
'
32 denotes a fork-supporting bar which is
Fig. 6 a, detail showing the manner of connecting 50 mounted in aligned apertures provided therefor
sections of a chain& the links of one of which
in the vertical side and reinforcing bars adjacent
. sections are arranged at right angles to the'links
to the spacer bar 21. 33 denotes the vertical
of the other section.
arms of lifting forks, the lower forwardly project
Describing by reference characters the various
ing ends of which are shown at 34. The upper
parts~ illustrated in- the drawings, l0 denotes gen 56 ends of the fork arms 33 are provided with aper
'
2,411,203
4
_ ‘able carriage assembly.
bar 32, and may be retained in any desired ad
justedposition with respect to said bar by means
of U-shaped yokes 35, the legs of which are u
adapted to be inserted through openings 21m in
the top of the spacer bar 21, with their legs em-. .
arms.
'
v
»
‘
,With the parts constructed and arranged as
thus described, the operation will be as follows:
When the carriage assembly is in its lowermost
position, as shown in Fig. 1, the pistons in the
, jacks will be adjacent to the tops of their respec
bracing opposite sides of the upper ends of the
fork
.
tary tilting movement is imparted to the rotat
tures whereby they are slidablymounted on the
tive cylinders 4| with the rotatable carriage mem
I
ber in the position shown in full lines in Figs. 1 1
The manner in which the rotatable carriage
member is supported for rotation on the support 10’ and 2. The cylinders are provided each with a
pipe 53 connecting the upper end thereof with a
ing member will now be described: 31 denotes a
double valve assembly 54, the bottoms of the cyl
shaft which is journaled in a bushing 38 secured
inders being connected by an equalizing pipe
to the front plate l5 of the supporting member ,
55; The carriage assembly will be lifted before
of the carriage assembly and vwhich extends
through the said plate and through the cross 15 tilting the rotatable carriage member, even to
points where it is necessary to resort to the use of
plate 30. and is keyed to the latter, the end which
the auxiliary mast, which will be elevated as the
projects through the said plate being reduced and
plunger 22 is raised, by engagement of the ears
threaded and provided with a nut 39. 40 denotes
24 with the cross tie 25. When the carriage as
‘a circular rotary operating member for the tilting
of the rotatable carriage member, the said oper 20 sembly shall have been elevated to' the point
where it is desired to discharge the load, the
ating member being itself operated !by a; ?exible
rotatable member may be rotated by the aux
member which engages the peripheral portion.
iliary cylinders and pistons by relieving the pres
thereof. The circular member as shown herein
sure on top of one of the pistons and by applying
engages its periphery is shown as a chain.
25 pressure to the top of the other.
Ordinarily the carriage assembly will be low
. In order to impart rotary movement to the
is a. sprocket since the ?exible member which
ered by gravity, due to the weight‘ of the same,
rotatable carriage member through the instru
even when devoid of a load.
‘
' '
mentality of the said sprocket, we have provided
It will be noted, from theforegoing, that the 7
the 'following‘construction: 4| denotes cylinders
of jacks which are conveniently. located within 30 cable by which the rotatable carriage member
may be tilted can serve the double function of
the lower portion of the mast assembly, the
enabling this tilting action to be obtained as well
lower ends of which cylinders are provided each
>with a. lug 42 whereby it is pivotally supported at .
as enabling vthe carriage assembly to be elevated
its lower end by means of a pivot pin 43 extend‘
to any desired extent within the limits of the
stroke of the plunger 2-2. Heretofore, the‘tilty
' ing through an aperture in said. lug and through ‘
ing of rotatable carriage members of carriage
apertures in brackets 44 which are anchored
to the base of the mast assembly. Each of the
assemblies has been obtained by mounting the,
said cylinders is provided with a piston rod 45 '
extending through the top of its cylinder. Each~ '
piston rod is provided at its upper end with a 40
clevis 46 the open end of which receives therein
the block of the lowermost link of a section or
member 41 of a cable (shown as a chain) which
motive power on said carriage assembly and sup?
plying operating. ?uid (hydraulic or electric)’
thereto by hoses or cables draped inconveniently
upon the mast.
>
It will be noted ‘further that the means whereby 1'
we are enabled to accomplish the useful functions
set forth hereinbefore can be incorporatedin a
is connected to the clevis by means of'a pin 48.
From the said clevises, the ascending reaches‘ of 45 well known type of industrial trucks, with a mini- .
mum of alterations with respect to the arrangethe chain sections'or‘members extend around
ment of the parts which have been used as stand- I
rollers 49 mounted for rotation on opposite ends
ard equipment for such trucks.
of ‘the cross headv 23. The lower ends of the de
Having thus described our invention, what we
scending reaches 41a of the said chain sections
.
‘
.
or members are connected with a third bottom 50 claim is:
1. In an industrial truck, in combination with
section or member 4‘Ib which forms a bight or
the front portion of the frame thereof and a
loop therewith and which is connected thereto as
follows :' 50 denotes connector blocks, each having
substantially vertical mast assembly supported
by the said portion of the frame, a carriage as
tending at right‘ angles to each other and with 55 sembly comprising a supporting member slidably
mounted upon said mast assembly and a rotat- -‘
the lower ends of the side members 41° of the bot
able member provided with load supporting
tom links of the descending reaches of the ?rst
' their opposite ends bored, with the bores ex
chain sections or members connected to the up
means and mounted for rotary movement upon
and with respect to the said supporting means,
per ends of their respective connector blocks by
and common means for lifting the said carriage
means of pins 5|, ,while the side members 4'!‘1 60 ' assembly
and for imparting rotary movement to
of the links at the upper ends of the bottom sec-v
the rotatable member thereof.
tion or member 4'|b are connected in like manner »
2. In an industrial truck, in combination with
to the bottoms of the connector blocks by pins
the front portion of the frame thereof and a
52 extending through the bores in the bottoms 65 substantially vertical mast assembly supported by
of the blocks and through the upper ends of the
said portion of the frame, a carriage assembly
said side members. Due to this construction, the
comprising a» supporting member slidably mount- v
links of the chain sectionior member 4‘!b are
arranged at right angles with respect to the links
» of the reaches 4'!B of the chain sections or mem
bers thereabove, which enables the lowermost
section ‘or member to obtain a driving connec
tion with the teeth of the sprocket 40. It will be
seen that the three ?exible sections or members
ed upon said mast assembly and a rotatable mem
ber provided with load supporting means and
70 mounted for rotary movement upon and with re- spect to the said supporting member, means for
imparting ‘ rotary movement to the rotatable
member, and means co'operating with the last
mentioned means for imparting lifting movement
41, 4'18 and 41b constitute a cable by which roe 75 to the carriage assembly.
'
2,411,268 _
its cooperating rotatable circular supporting
3. In an industrial truck, in combination with
the front portion ofv the frame thereof and a
- member, the said cable having a looped portion
substantially vertical mast assembly supported‘ ' extending from the rotatable circular supporting
by said portion of the frame, a carriage assembly
members to and around a peripheral portion of‘
. comprising a supporting member mounted for
the circular operating memberfor the rotatable
Sliding movement upon the mast assembly and
V a rotatable member mounted for rotary move
: ment upon and with respect to the said support
carriage member.
'
'
9. In the industrial truck set forth in claim 8, i
‘ means for raising and lowering the carriage as
ing member, means including a cable for lifting
' sembly independently of said cylinders. and pis
the said carriage assembly and for imparting 10 ton rods.
rotary movement to the rotatable carriage mem
10. In the industrial truck set forth in claim 8,
ber.
‘
'
the rotatable circular supporting members being
4. In an industrial truck, in combination with
located above the cylinders and pistons and be
the front portion of the frame thereof and a‘
ing carried on opposite ends of a cross head, a
substantially vertical mast assembly supported 15 plunger on the upper- end of which the cross
thereby, a carriage assembly comprising a sup
head is supported, and a cylinder within which
- porting member mounted for sliding. movement
upon the mast assembly'and a rotatable member
mounted for rotary movement upon and with re
spect to the said supporting member, and means
for imparting rotary movement to the said rotat
able member, the said means comprising a pair
of cylinders each having a piston therein with a
piston rod extending through an end thereof,
rotatable circular supporting members inter 25
posed between the projecting ends of the piston
rods and the rotatable carriage member, and
flexible operating members each connected at one
end to the operating end of a piston rod and
said plunger is mounted.
‘
11. In an industrial truck, in combination with
the front portion of the frame thereof and a.
substantially vertical mast assembly supported
by said portion of the frame, a carriage assembly
comprising a supporting member slidably mount
ed upon said mast assembly and a rotatable mem
ber provided with load supporting means and
mounted for rotary movement upon and with re
spect to said supporting member, a pair of cylin
ders, pistons within said cylinders having piston.
rods projecting through ends thereof, rotatable
circular supporting members interposed between
each extending around a peripheral portion of 30 the operating ends of said piston rods and the
rotatable carriage member, a shaft secured ‘to
having the end portion opposite that which is
said rotatable carriage member and supported
connected to a piston rod operatively connected
for rotary movement by the supporting member
to the rotatable carriage member.
,
of the carriage assembly, a sprocket on the said
5. In the industrial truck set forth in claim 4, 35 shaft, a chain having its opposite ends connected
means for raising and lowering the carriage as
to the operating ends of the said piston rods
' a rotatable circular supporting member and each
sembly independently of said cylinders and piston
with reachespassing around peripheral portions
rods.
of the corresponding rotatable circular support
'
l
'6. In the industrial truck set forth in claim 4_ a ing members and with other reaches extending
a main hoisting cylinder and a plunger therein, 40 from said rotatable circular supporting members
the said plunger supporting the rotatable circular
and formed into a bight or loop which extends
supporting members.
i
around a peripheral portion of the said sprocket,
,7. In the industrial truck set forth in claim 4,
and means for imparting movement to the pis
the mast assembly comprising a main mast and
tons within their respective cylinders.
an extensible mast mounted for sliding movement 45
12. In the industrial truck recited in claim 11,
upon the main mast, a main cylinder, a plunger
a main hoisting cylinder and a plunger therein,
therein, and a cross head on said plunger on
the said plunger supportingthe rotatable circular
which the rotatable circular supporting members
supporting members.
‘
are mounted, the cross head being adapted-by
13. In an industrial truck, in combination with
the elevation of the plunger to‘ elevate the ex 50 the front portion of the frame thereof and a
tensible mast.
,
substantially vertical mast assembly supported
8. In an industrial truck, in combination with I by the aforesaid-portion ‘of the frame, a carriage
the front portion of the frame thereof and' a
assembly comprising a supporting member slid
substantially vertical mast assembly supported a ably mounted upon said mast assembly and a
by said portion of theframe, a carriage assembly
rotatable member provided with load supporting
comprising a supporting member slidably mount
means, a shaft supported for rotary movement by
ed upon said mast assembly and a rotatable
the said supporting member and rigidly con
member provided with load supporting means
nected to the rotatable member, a sprocket upon
and mounted for rotary movement upon and
said shaft, a pair of cylinders, pistons within said
with respect to the said supporting-member, 'a 60 cylinders having piston rods projecting through
pair of cylinders, pistons within said cylinders
ends thereof, .a rotatable circular supporting
‘having piston rods projecting through ends of
member interposed between the operating end
the latter, and a rotatable circular supporting
of each of said piston rods and the rotatable
member interposed between the operating end of
carriage member, chain members connected each
each piston rod and the rotatable carriage mem
at one end thereof to the operating end of the
ber, and means for rotating the rotatable-car
cooperating piston rod, the said chain members ._
riage member comprising a shaft rigidly con
comprising reaches extending around peripheral
nected with the rotatable carriage member and
portions of the respective rotatable circular sup
mountedv for rotation upon and slipported by the
porting members and additional reaches extend
supporting member of said carriage assembly, a 70 ing from said circular supporting members, and
rotatable circular operating member rigid with
a third chain member having its links arranged
the said shaft, and a cable having its opposite
at right angles to the links on the other two chain
ends connected with the operating ends of said '
members and extending around a peripheral por
piston rods and having a reach extending from
tion of the sprocket, and~means for connecting
each of said rods around a peripheral portion of 75 the upper ends of the third chain member to
, 2,411,288
the ends of the additional reaches of the said
other chain members.
14. In the industrial truck ‘recited in claim 13,
the means for connecting the ends of thethird
chain member to the ends ofn-lthe additional 6
reaches 01' the othe'n chain members comprising
connector blocks each providedatbnerend thereé
01' with means for connecting thereto the end
of one of the said additional reaches and at its.
other end with means, at right angles to the ?rst
mentioned means, for connecting thereto an end
.of the third chain member.
PAUL R. GUERIN.
HERMAN MUSGRAVE.
'
Документ
Категория
Без категории
Просмотров
0
Размер файла
662 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа