JPS64360Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention allows the vehicle to travel along a tobacco cultivation ridge or a tea cultivation ridge while straddling the ridge.
This relates to an oil tank device for an elevated maintenance work vehicle that performs various agricultural tasks such as sowing, planting, and harvesting.

Previously, Utility Model Application No. 49-134602 or Utility Model Application No. 54-
As shown in Japanese Patent No. 9422, there was a technique for integrally forming an oil tank between a pair of left and right body body frames.

However, in the above-mentioned prior art, the vehicle body frame and front and rear wheels are not arranged in an elevated manner, nor is the vehicle body frame connected by a rotational fulcrum shaft and an oil tank provided near this fulcrum shaft. At the same time, since the oil tank is not used as a mounting base for the hydraulic pump, it is not possible to functionally configure an elevated vehicle body structure for carrying out agricultural work across ridges, and it is not possible to have a simple and well-balanced arrangement of the oil tank, hydraulic pump, etc. There were structural problems, such as the inability to install.

However, the present invention includes a pair of left and right torso body frames whose rear end sides are integrally connected to the rear body frame, and the front end sides of the torso body frames are rotated left and right to the front body frame via a rotation fulcrum pin. In addition to being freely connected, an engine is provided on one side of the body frame, a driver's seat is provided on the other side, and front and rear wheels are provided in front and behind the engine and the driver's seat, respectively. An oil tank is integrally formed between the body frame on the front end side near the rotation fulcrum axis, and a transmission case and a hydraulic pump which are interlocked and connected to the engine are mounted on the upper surface of the oil tank. That is.

Therefore, the elevated body structure including the body frame, engine, driver's seat, and front and rear wheels can be configured more functionally than before, and the transmission case and hydraulic pump are provided on the upper surface of the oil tank near the pivot axis. Therefore, the input/output mechanism and installation structure of the transmission case and hydraulic pump can be configured simply, and compared to conventional methods, it is easier to improve the performance of elevated farm management work such as straddling ridges, and maintain the balance of the elevated vehicle body. This is something that can be achieved.

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. Figure 1 is an overall side view of the elevated management work vehicle.
FIG. 2 is a plan view of the same, in which 1 and 2 are the front and rear body frames, and 3a and 3b are the rear body frames 2.
A pair of left and right torso body frames fixing the rear end side to the torso body frame 3; 4 is a rotation fulcrum pin for swingably attaching and connecting the front end side of the torso body frame 3 to the front body frame 1; 5a and 5b are front body frames; A front axle case is attached to both ends of the frame 1 so that it can be slid and removed via positioning pins 6, 6, and 7, 7 is an axle case 5.
a and 5b are front axle frames that are horizontally rotatably supported;
a, 9b are front wheel drive hydraulic motors that are integrally assembled in the front axle cases 5a, 5b; 10a, 1;
0b is the positioning pin 1 at both ends of the rear body frame 2.
1 and 11, the left and right rear axle cases are slidably attached and detached; 12a and 12b are rear wheels for running, which are mounted below the rear axle cases 10a and 10b via rear axle frames 13 and 13;
15 a, 14b are hydraulic motors for driving the rear wheels which are integrated into the rear axle cases 10a, 10b;
are front and rear wheels 8a on the left side of the body frame 3a,
An engine part 17 has an engine 16 mounted approximately in the center between 12a, front and rear wheels 8b on the right side of the torso body frame 3b, and a driving frame 18 fixed approximately in the center between 12b and a driver's seat 19, steering handle 20, etc. A driving operation unit to be equipped, 21 is the driver's seat 19
22 is a safety frame that protects the driving operation section 17; 23 is mounted at the center of the front part between the body frames 3a and 3b, and connects the input shaft to the engine 16 for driving.
PTO transmission case, 24, 25 are two variable displacement hydraulic pumps for operating the left and right row hydraulic motors 9a, 14a, 9b, 14b, which are interlocked and connected to the mission case 23; 26 is a front hydraulic pump; Charge pump 24 and 25 are provided close to each other, and 27 is the PTO of the transmission case 23.
Connect to the output shaft 28 in a detachable and directional manner.
A PTO rear transmission housing, 29 a gear shift lever connected to the hydraulic pumps 24 and 25 to perform traveling gear change operation, 30 a PTO gear shift lever connected to the transmission case 23, 31 located approximately in the center of the rear body frame 2; A hydraulic elevator having a lift arm 32 provided, 33 a lever for lifting and lowering the work equipment for operating the hydraulic elevator, and 34 a rotary tiller equipped with a rotary 37 for pulling the machine rearward via a lower link 35 and a top link 36. The machine is configured to run over tobacco cultivation rows, tea cultivation rows, etc., and to perform plowing work using the working machine 34.

As shown in FIGS. 3 to 5, the pair of left and right fuselage body frames 3a and 3b have their square grooves facing the inside of the body.
Upper and lower side plates 38,
39 and front and rear side plates 40, 41 to form a closed space 42, which is used as an oil tank 43 for storing hydraulic oil.

Further, the upper surface of the oil tank 43, that is, the upper side plate 3
An auxiliary tank 44 is integrally formed at the head of the tank 43 by bulging the front part of the auxiliary tank 4 upward.
By storing oil up to 4.
The oil tank 43 is always kept full of oil so that even if the aircraft is tilted, no air pockets will form inside the oil tank 43.

Further, the PTO transmission case 23 is mounted on the upper side plate 38 which is the upper surface of the oil tank 43 via a fixing bolt 45, and the charge pump 2 is attached via a fixing bolt 46 and a mounting bracket 47.
6 and hydraulic pumps 24, 25 are respectively mounted and fixed, and the upper surface of the tank 43 is configured to be shared as a mounting base for these pumps 24, 25, 26. In other words, the oil tank 4
Reference numeral 3 denotes a pair of torso body frames 3a, 3b and a mounting base (upper plate 3) for the pumps 24, 25, 26.
8), etc.

Furthermore, oil filters 48 and 49 are installed inside the oil tank 43, and these filters 48 and 49 are connected to the suction side of the charge pump 26 of the steering hydraulic circuit and to the operating hydraulic circuit of the working machine 34, respectively. They are configured to be connected via pipes 50 and 51.

Further, a drain 52 is provided at the bottom of the oil tank 43, and a long oil filler port 53 is provided at the top of the auxiliary tank 44.
is installed.

As shown in FIG. 5, the auxiliary tank 44 has a bowl shape and is fixed to the upper plate 38 through bolts 55 and gaskets 56.
is communicated with the oil tank 43.

This embodiment is configured as described above, and the oil tank 43 is provided in the surplus space between the left and right body body frames 3a and 3b, so the configuration can be made compact, and the conventional oil tank installation space can be saved. On the other hand, it can be effectively utilized, and at the same time, it can lower the center of gravity of the aircraft and stabilize the balance of the aircraft. Furthermore, the left and right torso body frames 3a, 3
b is connected by the oil tank 43,
The frames 3a, 3 with the tank 43 as a reinforcing member
The strength of b can be improved. Furthermore, the oil tank 43 is also connected to the base or upper plate 38 on which the PTO transmission case 23 and pumps 24, 25, 26, etc. are attached, as well as the vehicle body frame 3.
Since it is composed of A, 3B, etc., it is not only strong but also safely protected from the outside. In addition, the PTO transmission case 23 and the pump 2
The lower parts of the pumps 24, 25, and 26 can effectively attenuate and absorb the contact force generated by the oil tank 43 into the hydraulic oil in the oil tank 43, and connect the pumps 24, 25, and 26 to the oil tank 43. Since the piping systems used for this purpose are also close to each other, the configuration can be extremely simple.

As is clear from the above embodiments, the present invention includes a pair of left and right body body frames 3a, 3b whose rear ends are integrally connected to the rear body frame 2, and whose front ends are connected to the front body frames 3a, 3b. It is connected to the vehicle body frame 1 via a rotation fulcrum pin 4 so as to be rotatable left and right, and an engine 16 is provided outside one side of the body body frames 3a, 3b, and a driver's seat 19 is provided outside the other side. In addition, front and rear wheels 8a, 8b, 12a, in front and behind the engine 16 and the driver's seat 19,
12b respectively, while the rotation fulcrum shaft 4
An oil tank 43 is integrally formed between the body body frames 3a and 3b on the front end side near the engine 16, and a transmission case 23 is interlocked and connected to the engine 16.
and hydraulic pumps 24, 25 are mounted on the upper surface of the oil tank 43, and the vehicle body frame 1,
2, 3a, 3b, engine 16 and driver's seat 19
The elevated vehicle body structure of the front and rear wheels 8a, 8b, 12a, 12b, etc. can be configured more functionally than before, and the transmission case 23 and hydraulic pumps 24, 25 are mounted on the upper surface of the oil tank 43 near the rotation fulcrum shaft 4. Because of this, the input/output mechanism and installation structure of the transmission case 23 and hydraulic pumps 24 and 25 can be configured simply, which improves the performance of elevated farm management work such as straddling ridges compared to the conventional method, and improves the balance of the elevated vehicle body. This has practical effects such as easy maintenance.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is an overall side view of an elevated management work vehicle, Fig. 2 is a plan view of the same, Fig. 3 is a side explanatory view of the main parts, and Fig. 4 5 is an explanatory plan view of the main part, and FIG. 5 is an enlarged view taken along the - line in FIG. 3. 1... Front body frame, 2... Rear body frame, 3a, 3b... Torso body frame, 38...
Upper side plate, 39...Lower side plate, 40...Front side plate, 41
... Rear side plate, 42 ... Closed space, 43 ... Oil tank.

Claims (1)

[Scope of utility model registration request] A pair of left and right torso body frames 3a, 3b are provided, the rear end of which is integrally connected to the rear body frame 2, and the front ends of the torso body frames 3a, 3b are connected to the front body frame 1 via a rotation fulcrum pin 4. In addition to being connected so as to be rotatable left and right, the trunk vehicle body frames 3a, 3
An engine 16 is provided outside one side of b, and a driver's seat 19 is provided outside the other side, and front and rear wheels 8a, 8b, 1 are provided in front and behind the engine 16 and driver's seat 19.
2a, 12b, respectively, while the body frame 3a, 3 on the front end side near the rotation fulcrum shaft 4
An elevated type management work characterized in that an oil tank 43 is integrally formed between b and 4, and a transmission case 23 and hydraulic pumps 24, 25 which are interlocked and connected to the engine 16 are placed on the upper surface of the oil tank 43. Car oil tank equipment.