Land vehicles: dumping – Tilting – Operating mechanism
Reexamination Certificate
2001-09-06
2003-02-25
Gordon, Stephen T. (Department: 3612)
Land vehicles: dumping
Tilting
Operating mechanism
C298S01700B, C298S01900R, C180S068400, C180S069200, C180S291000, C180S297000, C180S306000
Reexamination Certificate
active
06523905
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a crawler carrier which is suitable for transporting soil and sand or the like scraped under application of a hydraulic excavator and the like, for example, to a desired soil depositing location.
2. Description of the Prior Art
It is generally known in the prior art to provide a crawler carrier for use in transporting soil and sand scraped under application of a hydraulic excavator and the like at a mountain area and an unlevel ground, etc. in which the same is comprised of a lower travelling structure having crawlers at both right and left sides, for example, and an upper structure mounted on the lower travelling structure and having a dump body for use in loading transported materials such as soil and sand or the like (refer to the gazette of Japanese Patent Laid-Open No. Hei 9-86261, for example).
In view of this fact, referring now to
FIGS. 11
to
18
, the crawler carrier of this kind of prior art will be described as follows.
At first,
FIGS. 11
to
14
illustrate the crawler carrier in accordance with the first prior art, wherein this revolving type crawler carrier
1
is substantially constituted of a lower travelling structure
2
and an upper revolving structure
11
to be described later.
Reference numeral
2
denotes a lower travelling structure of self-travelling type, wherein the lower travelling structure
2
is substantially comprised of a track frame
3
; right and left driving wheels
4
and
4
arranged at the front end side of the track frame
3
and driven by a travel motor (not shown); right and left idling wheels
5
and
5
rotatably arranged at the rear end side of the track frame
3
; and right and left crawlers
6
and
6
arranged to be wound around the driving wheel
4
and the idling wheel
5
. Then, the lower travelling structure
2
moves on the unlevel ground and muddy land or the like by driving the crawler
6
by the driving wheel
4
.
Denoted at
7
is a swing mechanism provided between the lower travelling structure
2
and the upper revolving structure
11
to be described later, wherein the swing mechanism
7
is constituted by a swing ring
7
A arranged between the track frame
3
of the lower travelling structure
2
and a revolving frame
12
to be described later; and a swing motor
7
B fixed to the revolving frame
12
. Then, the swing mechanism
7
is used for turning the upper revolving structure
11
on the lower travelling structure
2
while hydraulic fluid is fed from a hydraulic pump
19
to be described later to the swing motor
7
B or discharged from it, thereby the upper revolving structure
11
is revolved on the lower travelling structure
2
.
Reference numeral
11
denotes an upper revolving structure acting as an upper structure installed on the lower travelling structure
2
in such a way that it may be swung through the swing mechanism
7
. In this case, the upper revolving structure
11
is comprised of a revolving frame
12
, a dump body
13
, a cab
15
, a driving force source
17
, a heat exchanger
20
, an operating oil tank
26
and a fuel tank
28
and the like to be described later.
Denoted at
12
is a revolving frame acting as an upper structure frame constituting a base of the upper revolving structure
11
. In this case, the revolving frame
12
constitutes a rigid supporting structure by the right and left longitudinal beams
12
A extending in forward and rearward directions; a plurality of lateral beams (not shown) extending in rightward and leftward directions to connect between each of the longitudinal beams
12
A; and a support frame
12
B installed at the front side of each of the longitudinal beams
12
A to support the cab
15
and an engine
18
or the like to be described later. Then, the revolving frame
12
is installed on the lower travelling structure
2
in such a way that it can be revolved through the swing mechanism
7
.
Denoted at
13
is a dump body arranged to extend from the intermediate portion of the revolving frame
12
to the rear portion thereof, wherein the dump body
13
is formed into a box-shape having a bottom part with its upper portion being opened and on its lower surface is provided a dump body frame
13
A extending in the forward and rearward directions. The rear end side of the dump body frame
13
A is rotatably connected to the rear end side of the longitudinal beam
12
A constituting the revolving frame
12
, and a dump body ascending or descending cylinder
14
is installed between the dump body frame
13
A and the longitudinal beam
12
A of the revolving frame
12
. Then, the dump body ascending or descending cylinder
14
is extended or retracted to cause the dump body
13
to be inclined in respect to the revolving frame
12
, thereby the soil and sand loaded on the dump body
13
are unloaded.
Indicated at
15
is a cab defining a driver's room, wherein the cab
15
is positioned at the front side of the dump body
13
and installed at one side (the left side) of the rightward and leftward directions of the support frame
12
B constituting the revolving frame
12
. Then, the cab
15
is formed into a box-shape enclosed by a front surface
15
A, a rear surface
15
B, right and left side surfaces
15
C and
15
D and an upper surface
15
E. In this case, the lower side of the rear surface
15
B forms a recessed portion
15
F recessed to the front surface
15
A side, and a fuel tank
28
to be described later is installed between the recessed portion
15
F and the dump body
13
. Then, within the cab
15
are installed a driver's seat
16
where an operator sits, travel levers, and operation levers (not shown) for operating the dump body
13
.
Reference numeral
17
denotes a driving force source positioned at the front side of the revolving frame
12
and installed at the other side (the right side) of the rightward and leftward directions. In this case, as shown in
FIGS. 12 and 13
, the driving force source
17
is substantially constituted of an engine
18
provided with an intake air cleaner
18
A; and a hydraulic pump
19
driven by the engine
18
and for feeding or discharging hydraulic oil to or from a travel motor (not shown) for the lower travelling structure
2
, the swing motor
7
B and the dump body ascending or descending cylinder
14
and the like. A plurality of a main pump, a pilot pump and the like constitute the hydraulic pump
19
.
Indicated at
20
is a heat exchanger positioned at the front side of the driving force source
17
and installed at the revolving frame
12
. In this case, the heat exchanger
20
is arranged to be oppositely faced against a fan
18
B of the engine
18
, and cooled with cooling air produced by the fan
18
B. The heat exchanger
20
is substantially constituted by a radiator
21
for cooling the engine
18
, and an oil cooler
22
for cooling hydraulic oil discharged from the hydraulic pump
19
.
In this case, the driving force source
17
and the heat exchanger
20
are installed at the revolving frame
12
while they are arranged in series in a forward and rearward direction. The rear end side of the hydraulic pump
19
extends beneath the dump body
13
. Due to this fact, as shown in
FIG. 13
, the driving force source
17
is fixed to the revolving frame
12
under a state in which a center X
1
—X
1
of a crank shaft of the engine
18
is inclined by an angle &thgr;
1
in respect to a horizontal direction so as to avoid any interference between the rear end side of the hydraulic pump
19
and the dump body
13
.
Denoted at
23
is an engine cover installed at the front side of the dump body
13
, wherein the engine cover
23
covers the engine
18
and a part of the hydraulic pump
19
. Numeral
24
denotes a pump cover arranged at the rear side of the engine cover
23
, wherein the pump cover
24
covers the rear end side of the hydraulic pump
19
entered into the lower side of the dump body
13
so as to prevent the hydraulic pump
19
and some hydraulic hoses (not shown) connected to the hydraulic pump
19
and the like
Hirasawa Kiyoshi
Oshina Morio
Sendai Yoshinori
Takayama Tsuyoshi
Tamura Seiji
Chenevert Paul
Gordon Stephen T.
Hitachi Construction Machinery Co. Ltd.
Mattingly Stanger & Malur, P.C.
LandOfFree
Crawler carrier having an engine, a hydraulic pump and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Crawler carrier having an engine, a hydraulic pump and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crawler carrier having an engine, a hydraulic pump and a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3171412