JPH0246667Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a grain tank for a combine harvester that harvests and threshes grain culms.

(b) Prior art In general, combine harvesters that have a threshing device and a grain tank installed on the machine stand require maintenance of the threshing device and the transmission device between it and the grain tank from the grain tank side. From there, the grain tank was evacuated by rotating around a horizontal shaft at the bottom or a vertical shaft set up on the platform.

(c) Problems to be solved by the invention When the previously known grain tank has a large capacity, it becomes heavy and difficult to tilt, and as it is filled with grain, the center of gravity of the machine moves closer to the grain tank. The drawback was that the left-right balance of the aircraft deteriorated significantly as it shifted to the side.

Furthermore, since the grain tank was of a closed type, maintenance inside the tank was troublesome.

(d) Means for solving the problem The present invention increases the capacity of the grain tank by connecting the fixed tank on the threshing device to the movable tank installed on the machine base, and at the end of the grain filling stage, the fixed tank is connected to the fixed tank on the threshing device. Storing grain in the tank prevents deterioration of the lateral balance of the aircraft, and when servicing each part with the space between the threshing device and grain tank open, only the movable tank can be easily tilted. Furthermore, when filled with grains, the center of gravity of the movable tank is set to be on the fixed tank side, so that as the grains are filled, the movable tank is sequentially pressed against the fixed tank. In this way, the connection between the movable tank and the fixed tank is made more stable even when the weight increases, and the above-mentioned problems and new problems caused by dividing the grain tank into the fixed tank and the movable tank are solved. Resolved the point.

(E) Function When grains are filled into the grain tank using the grain lifting barrel of the threshing device, they are first stored in the movable tank one after another, and when they reach the upper part of the threshing device, they are also stored in the fixed tank, and the grain is filled with grains. When the shift of the center of gravity is most severe, the grain will be distributed between the mobile tank and the fixed tank on the thresher.

In addition, when tilting the grain tank in order to maintain the threshing device or the transmission device between it and the grain tank, all that is required is to release the connection with the fixed tank and rotate only the movable tank. Even though the internal volume of the upper part of the tank is expanded, the tank can be easily tilted outward or tilted back toward the threshing device.

Furthermore, when servicing the interior of the grain tank, not only the fixed tank but also the movable tank have openings, so maintenance can be easily performed from those openings.

Furthermore, as the movable tank is filled with grain during the reaping and threshing operation, the center of gravity of the movable tank is located on the fixed tank side, so the movable tank is sequentially pressed against the fixed tank, making the connection between the two more stable.

(F) Embodiment To explain an embodiment of the present invention about a combine harvester shown in the drawings, 1 is a threshing device mounted on one side of a machine base 3 having a traveling device 2, and a reaping device is mounted in front of it. A pre-processing device consisting of a and a grain culm conveying device is installed, and a straw processing device such as a cutter or a tying device is installed at the rear, and the grain tank A installed on the other side of the machine base 3 is a movable tank. 7 and a fixed tank 8, the movable tank 7 is pivoted so that its outer lower part can be tilted forward and backward on the outside of the machine 3 on support shafts 9, and when it is filled with grains, its center of gravity is the support axis. The intermediate part and tip part of the transfer spiral 11 are folded at the transfer end of the transfer spiral 11, which is arranged so as to be closer to the fixed tank 8 than the fixed tank 8 and communicated with the V-shaped bottom plate of the movable tank 7. A grain thrower 12 that can be tilted from side to side during grain ejection is installed in series, and an input pulley fixed on the starting end side is driven by an output pulley protruding forward from a gear case 14 via a V-belt with a tension pulley attached. The input pulley 18 of the gear case 14 is connected to the engine 19.
The movable tank 7 is driven by a pulley via a V-belt to which a clutch pulley is attached, and the portion of the movable tank 7 corresponding to the fixed tank 8 is formed in an opening 7a.

Further, the grain thrower 12 rises from between the grain tank A and the operator's seat provided close to the front part thereof, and has a portion corresponding to the upper outer step of the movable tank 7 and a tip portion. It has a bent part at the end,
During the reaping operation, the intermediate section 12a is tilted backward and the tip section is bent horizontally toward the center of the width of the machine. Operation lever 1 that protrudes upward in the folded state
2b is provided, and when raising or lowering the intermediate portion 12a with the tips connected in a row, the operator extends his hand rearward from the cockpit, engages/disengages the latch b from the hook a, and holds the operating lever 12b. When pushed and pulled, the upper part of the grain thrower 12 easily rotates back and forth around the support shaft 12c.

The front part of the fixed tank 8 is screwed onto the threshing device 1 through an L-shaped mounting plate 22, and the rear wall plate 8b is fitted with a bottom plate 8c that is inclined toward the movable tank 7. An L is provided on the threshing device 1 by being fixed to a cylinder 23 via a stay 24, and its base is rotatably inserted into horizontal holding cylinders 25, 25 attached to the front and rear surfaces of the fixed tank 8.
The letter-shaped connecting rods 26, 26 engage with the horizontal notched grooves 29, 29 of the supports 27, 27 fixed to the front and rear surfaces of the movable tank 7, and when the tips thereof are directed downward as shown in FIG. It is locked.

In addition, the openings 7 of the movable tank 7 and the fixed tank 8
The front and rear side edges of a and 8a are tapered and overlapped as shown in FIG. 3, and the lower edge of the opening 8a of the fixed tank 8 protrudes triangularly, and The lower edge 7a is bent obliquely toward the interior of the movable tank 7 and overlaps the lower slope of the protrusion 8d.

Furthermore, the grain lifting cylinder 23 has a bottom plate 8c as described above.
Since it is inserted into the fixed tank 8, the internal volume of the grain tank can be expanded in the left and right directions compared to the conventional case where the discharge port of the grain lifting cylinder 23 is communicated with the wall plate of the grain tank. As shown in Fig. 3, the upper casing 30 of the grain lifting cylinder 23 has a fan shape that widens approximately 90 degrees toward the rear in plan view, and opens approximately 270 degrees toward both sides and the front. The grains can be thrown over a wide range by the rotation of the throwing blade 31 that is integrated with the grain spiral shaft, and since the bottom plate 8c is inclined downward toward the movable tank 7, the grains can be thrown into the fixed tank 8. The grains quickly slide down into the movable tank 7, and when the handling chamber cover 32 and cylinder cover 33 of the thresher 1 are opened as shown by chain lines in FIG.
c is not an obstacle.

34 is a grain detection sensor attached to the fixed tank 8, 35 is a viewing window with a transparent plate attached, 36, 3
7 is a cleaning port with a removable lid; 38 is a port 2 connecting the lower part of the movable tank 7 on the side of the threshing device 1 to the machine base 3;
It is a link that can be folded, and when the movable tank 7 is tilted outward as shown in FIG. 1, it maintains its tilted posture, and is folded up when it is erected.

In the above-mentioned combine harvester, the grains that have been harvested, threshed and sorted are fried by the grain lifting cylinder 23,
The throwing blade 31 throws the fried grains across the movable tank 7 and the fixed tank 8, and the thrown grains in the fixed tank 8 flow down the bottom plate 8c and enter the movable tank 7. After the grains are deposited up to the lower edges of the openings 7a and 8a, they are deposited over a wide area covering both the movable tank 7 and the fixed tank 8, and the left-right balance of the machine body is improved compared to when only the movable tank 7 is filled with grains. Since the movable tank 7 is tiltable during such grain filling, it is normally unstable, but as the movable tank 7 is filled with grains and its weight increases, its weight increases. Since the center of gravity is located on the fixed tank 8 side from the rotation fulcrum,
The movable tank 7 is sequentially and strongly pressed against the fixed tank 8, and even if the aircraft body tilts in the left-right direction, a stable coupled state can be maintained.

When loading the grains in the grain tank A onto the transport vehicle, the machine is moved to the transport vehicle, the grain thrower 12 is tilted to the side, the transfer spiral 11 is driven, and the shutter is opened to remove the shell grains. Load onto the transport vehicle.

Furthermore, when servicing the inside of the shell grain tank A, the shelling device 1, or the transmission device between it and the shell grain tank A, the connecting rods 26, 26 are held horizontally and pushed into the shelling device 1 side. , 27 and then tilt the movable tank 7 outward.
The openings of the movable tank 7 and the fixed tank 8 are opened, and at the same time, the transmission device, the cleaning ports 36, 37, etc. of the threshing device 1 are exposed for maintenance.

When the maintenance work is finished, when the movable tank 7 is stood up and rotated, the movable tank 7 and the fixed tank 8 are
The upper edge, both side edges and lower edge of the openings 7a and 8a are closely overlapped as shown in FIGS. 27, 27, and rotate downward to connect.

(g) Effects of the invention Since the invention is constructed as described above, as the movable tank 7 is filled with grains during reaping work, the movable tank 7 is urged to rotate toward the fixed tank 8 due to its weight. As a result, the movable tank 7, which tends to become unstable if it is rotatable, is pressed more strongly against the fixed tank 8 as the amount of filling increases.
Even if the aircraft tilts to the left or right when the grain filling amount increases while traveling, the movable tank 77 and fixed tank 8
can further strengthen the polymerization.

Although the capacity of the grain tank A can be increased by connecting the fixed tank 8 to the movable tank 7, when the amount of grain filled increases, the fixed tank 8 on the thresher 1 The center of gravity of the machine moves to the side opposite to the threshing device 1 and the machine body is prevented from tilting to the side, thereby improving the steering performance and sorting performance.

Furthermore, when maintaining the grain tank A, the threshing device 1, and the transmission device between it and the grain tank A,
The fixed tank 8 remains attached to the threshing device 1,
Only the movable tank 7 can be tilted easily and easily, and the grain tank A can also easily maintain the movable tank 7 and the fixed tank 8 from their openings.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Fig. 1 is a front view of the combine showing the state in which the movable tank is tilted to the side, Fig. 2 is a front view showing the state in which the movable tank is coupled to the fixed tank, and Fig. 3 is a plan cross-sectional view of the grain tank. Fig. 4 is a longitudinal sectional view of the joint between the movable tank and the fixed tank, Fig. 5 is a perspective view of the same as above, Fig. 6 is a side view with a partially broken part of the folded part of the grain thrower, and Fig. 7 is the same as above. The front view and FIG. 8 are operational views of the same. 1... Threshing device, 3... Machine base, 7... Movable tank, 8... Fixed tank, 7a, 8a... Opening,
12...Fried grain slurry, 23...Fried grain cylinder.

Claims (1)

[Scope of utility model registration request] In a combine harvester in which the threshing device 1 is mounted on one side of the machine base 3 and the grain tank A is provided on the other side, the grain tank A is composed of a movable tank 7 and a fixed tank 8, and the fixed tank 8 is fixed to the thresher 1 side with its opening 8a facing toward the movable tank 7 side, the movable tank 7 is pivotally supported on the machine stand 3 so as to be tiltable left and right, and the opening 7a at the top thereof is fixed to the threshing device 1 side with its opening 8a facing toward the movable tank 7 The movable tank 7 is removably connected to the opening 8a of the tank 8 and the movable tank 7 is filled with paddy.
A grain tank for a combine harvester, characterized in that the center of gravity of the grain tank is located closer to the fixed tank 8 than the rotation fulcrum.