JPH0312715Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a grain transport vehicle that is constructed by mounting a grain hopper on the loading platform of a truck. This invention relates to improvements to an opening/closing shutter that opens and closes an outlet.

[Prior Art] The above-mentioned grain transport vehicle is used to transport grain harvested by a combine harvester from the field to a work shed where a grain dryer is installed, and is shown in Figure 1. As shown in Fig. 1, a grain hopper a is mounted on the platform 10 of a small truck 1 owned by an ordinary farmer. In order to facilitate the removal of the grains, a grain conveyor 3 is installed on the rear side of the hopper main body 2 where the discharge port 20 is provided, and a receiver provided in the casing 30 that accommodates the jumpwheel is installed. The inlet is connected and communicated with the discharge port 20, and inside the hopper main body 2, the grains collected at the bottom formed in a funnel shape when viewed from the rear by the left and right inclined floor plates 21, 21 are directed toward the discharge port 20. A screw conveyor 4 for transporting the grains is installed horizontally in the front-rear direction, and the screw conveyor 4 and the grain conveyor 3 are used to take out the grains from the machine.

In order to prevent clogging caused by grains in the hopper main body 2 being fed into the casing 30 of the grain conveyor 3 in excess of its grain feeding capacity, a screw conveyor 4 inside the hopper main body 2 is provided.
A guide plate 5 is provided at an upper position, and has an umbrella-like shape when viewed from the rear, with a guide surface on the upper surface divided into left and right sides, and the side edges 50, 50 of the guide plate 5 and the descending ends of the left and right inclined floor plates 21, 21 are connected to each other. The gap formed by this is used as an outlet for the screw conveyor 4, and shutter plates 6, 6 are provided thereto to cut off communication between the inner cavity of the hopper main body 2 and the inner cavity of the conveying gutter 40 of the screw conveyor 4. The amount of grains flowing into the screw conveyor 4 is adjusted by adjusting the opening degrees of these, and the amount of grains sent into the casing 30 of the grain conveyor 3 is adjusted. There is.

[Problem to be solved by the invention] By the way, the opening/closing shutter of the grain hopper a in the grain transport vehicle configured as described above is equipped with a shutter plate 6 to reduce the amount of grain flowing out to the screw conveyor 4. , 6 is narrowed, a clogging phenomenon in which grains get stuck between the shutter plates 6, 6 and the inclined floor plates 21, 21 occurs, and the adjustment is delicate and difficult.

As a measure to solve this problem, the grain hopper a is divided into a plurality of sections in the axial direction of the screw conveyor 4 provided at the bottom thereof, and the inner cavity of the conveying gutter 40 of the screw conveyor 4 is connected to the grain hopper a. The shutter plates 6, 6, which are provided to open and close communication with the inner cavity of the grain hopper a, are divided into sections of the divided grain hopper a, and each of the divided shutter plates is operated independently. A means for doing so is known from, for example, Japanese Patent Laid-Open No. 53-26062.

However, this method shortens the length in the longitudinal direction by dividing the shutter plate into a plurality of parts in the longitudinal direction corresponding to the divided grain hoppers, thereby making it easier to adjust the outflow amount. Therefore, not only does the cost of dividing the grain hopper a and the shutter plates 6, 6 increase, but also the amount of movement of the shutter plates 6, 6 does not change, so in order to reduce the amount of outflow, the shutter plate 6 , 6 and the inclined floor plate 21, a clogging phenomenon occurs at the narrowed outlet in each section of the divided grain hopper a. There's a problem.

The present invention was made in order to solve these problems occurring in the conventional means, and it divides the grain hopper a and the shutter plates 6, 6 into a plurality of parts in the axial direction of the screw conveyor 4. [Means for Solving the Problems] The purpose of the present invention is to provide a new means for accurately adjusting the amount of grain supplied to a grain conveyor in a grain hopper. In this invention, as a means to achieve this purpose, on the rear side of the main body of the hopper,
A grain conveyor is installed in which the receiving port communicates with the discharge port opened at the bottom of the rear side, and the left and right side edges of the conveying gutter are installed at the bottom of the hopper main body at the inclined descending ends of the left and right inclined floor plates. A screw conveyor is installed whose upper end side is connected, and its terminal end side in the conveyance direction faces the discharge port, and above the screw conveyor is a guide plate whose upper surface is shaped like an umbrella when viewed from the rear. provided, and a pair of left and right shutter plates facing each other are provided at the left and right outlets formed between the left and right side edges thereof and the inclined descending ends of the left and right inclined floor plates, each of which operates to open separately, An operating lever is connected to one of the left and right shutter plates, and rotates around a fulcrum shaft to open and close that one shutter plate. A grain transport vehicle characterized in that the lever is connected via a link rod so as to open and close the other shutter plate in a rotation range beyond the rotational position in which the one shutter plate is opened. This provides an opening/closing shutter for the outlet of the grain hopper.

[Example] Next, an example of implementation will be described in detail with reference to the drawings.

Fig. 2 is a partially cutaway rear view of the main part of the grain hopper in a grain transport vehicle in which the present invention can be implemented. Machine wall, 21, 21 are left and right inclined floor plates, 4 is a screw conveyor, 5 is a guide plate with an umbrella-shaped cross section arranged above the screw conveyor 4, 23, 23 are left and right side edges of the guide plate 5 Outlet ports 50, 50 and the downwardly inclined end portions of the inclined floor plates 21, 21 are formed, and reference numeral 6, 6 indicates a shutter plate to be installed at the outlet ports 23, 23.

The screw conveyor 4 is a conventional one consisting of a conveying gutter 40 and a screw 41 pivotally supported at the bottom of its inner cavity. floorboard 21,
21, and the terminal end side in the conveying direction is connected to the hopper main body 2 along the rear surface of the machine wall 22 through the discharge port 20 provided in the machine wall 22 on the rear side of the hopper main body 2. The casing 3 of the grain conveyor 3 installed as shown by the chain line in FIG.
It is connected and communicated with the intake port of 0.

The shutter plates 6, 6 are installed so as to slide up and down along the respective inner surfaces of the left and right guide walls 5a, 5a of the guide plate 5, which has an umbrella-shaped cross section, and are installed at both front and rear ends of the shutter plates 6, 6. Connecting pins 60 that protrude outward through guide grooves 24 provided in the rear machine wall 22 and the front machine wall (not clearly shown in the diagram) of the hopper main body 2 are installed in the hopper main body 2. There is.

Further, on the outer surfaces of the rear machine wall 22 and the front machine wall, pivot shafts A and B are provided at respective outer positions in the left and right direction of the shutter plates 6 and 6 to rotate up and down. Link rods 7, 8 are installed, and the respective rotating ends of the link rods 7, 8 are connected to connecting pins 60, 60 of shutter plates 6, 6 located on separate sides, respectively.
8 are connected via elongated holes 70, 80 along the longitudinal direction. These link rods 7 and 8 are supported on fulcrum shafts A and B at different angles in the front and back so that their respective rotational trajectories wrap back and forth, and one of the link rods 7 is provided with a rotation path as desired. If the operating lever 9 that can be operated is connected and the other link rod 8 is connected, when the one link rod 7 is operated to move the shutter plate 6 to the open position by operating the operating lever 9. A crank-shaped portion 8a is formed to escape upward so that the connecting pin 60 between the link rod 7 and the shutter plate 6 does not come into contact with each other.

Further, the shutter plate 6, which is connected to the link rod 7 to which the operating lever 9 is connected via the connecting pin 60, is installed so as to be able to slide further from the open position in the direction of the opening operation, and The guide groove 24 provided on the machine wall 22 on the rear side of the hopper main body 2 so as to fit with the connecting pin 60 provided on the shutter plate 6 is formed to be long in the direction of the opening operation of the shutter plate 6. The shutter plate 6 moves to the open position by the rotation of the link rod 7 by the operation lever 9, and from the state in which the connecting pin 60 is in contact with the crank-shaped portion 8a of the other link rod 8 (FIG. 3), the operation lever is further moved. 9 to rotate the link rod 7 upward, the other link rod 8 is pushed up by the connecting pin 60, and as shown in FIG.
It rotates counterclockwise around the center in FIG. 4 to operate the other shutter plate 6 to the open position.

[Function] The embodiment device configured as described above functions as follows.

When the operating lever 9 is rotated counterclockwise about the fulcrum shaft A in FIG. One of the shutter plates 6, which is connected to the shutter plate 70 via the connecting pin 60 and is urged downward by its own weight, descends to a position where its lower edge collides with the upper surface of the inclined floor plate 21 and stops. The closed state is reached, and the link rod 7 is held in a horizontal state by the connecting pin 60. As a result, the link rod 8 pivotally supported on the fulcrum shaft B
is released from the restriction of the above-mentioned connecting pin 60 that fits into the elongated hole 70 and protrudes from the outer surface of the machine wall 22, and becomes free, so that its rotating end side descends due to its own weight, At the same time, the lower edge of the other shutter plate 6, which is connected to the elongated hole 80 of the link rod 8 via the connecting pin 60 and is urged downward by its own weight, collides with the upper surface of the inclined floor plate 21. The link rod 8 is then lowered to a stopping position to enter a closed state, and the link rod 8 is held in a horizontal state via the connecting pin 60, resulting in the state shown in FIG.

Next, from this state, when the operating lever 9 is rotated clockwise in FIG. One of the connected shutter plates 6 is pulled up to open one outlet 23. At this time, the connecting pin 60 collides with the lower edge of the crank-shaped portion 8a of the other link rod 8 to restrict upward rotation of the link rod 7. In this state, if the operating lever 9 is fixed in that position with a suitable locking means, the left and right outflow ports 23, 23 are held in the half-open state shown in FIG. 3 with one of them open.

Next, when the operating lever 9 is further rotated clockwise around the fulcrum shaft A from the above-mentioned state, the link rod 7, which rotates upward, is linked to the one shutter plate 6 in the open position. The connecting pin 60 along with the shutter plate 6 is raised along the long guide groove 24,
At the same time, the other link rod 8 with which the connecting pin 60 abuts the lower edge is rotated upward around the fulcrum shaft B, and the other shutter plate 6 connected to the rotating end of the link rod 8 is rotated upward. Pull it up and open it, and it will be in the state shown in Figure 4. By holding the operating lever 9 in this position with a suitable locking means, both the left and right shutter plates 6, 6 are held in the fully open state shown in FIG. 4 in which they are both open.

[Effect] As explained above, the opening/closing shutter for the outlet of the grain hopper in the grain transport vehicle according to the present invention has an intake port in the discharge port 20 opened at the rear side of the hopper main body 2 and at the bottom of the rear side. At the bottom of the hopper main body 2, there is a screw with which the upper ends of the left and right side edges of the conveying gutter 40 connect to the inclined lower ends of the left and right inclined floor plates 21, 21. A conveyor 4 is installed so that its terminal end in the conveyance direction faces the discharge port 20, and a guide plate 5 whose upper surface is shaped like an umbrella when viewed from the rear is provided above the screw conveyor 4. left and right side edges 50,50
and the left and right outlet ports 23, 23 formed between the left and right inclined floor plates 21, 21 and the inclined descending ends of the left and right inclined floor plates 21, 21,
Shutter plates 6, 6 that open independently
are provided in a pair facing left and right, and one of the left and right shutter plates 6, 6 is
An operating lever 9 that rotates around the fulcrum shaft A to open and close the one shutter plate 6 is connected to the operating lever 9, and the operating lever 9 is connected to the other shutter plate 6, and the operating lever 9 is connected to the other shutter plate 6. The link rod 8 is configured to open and close the other shutter plate 6 in a rotation range beyond the rotation position where the plate 6 is opened.
Since the screw conveyor 4 installed at the bottom of the hopper main body 2 is connected through the By leaving one side in the open position and moving only one side to the open position, it will be in a half-open state, and from that state, the other side will move to the open position and become fully open, so when restricting the flow rate, first move it towards the closed position. A moving shutter plate 6 and a shutter plate 6 that moves to a fully closed position and then to a closed position.
However, by moving the left and right shutter plates at the same time, the amount of movement of the shutter plates is twice that of the previous method, so that the outflow volume is reduced to the same amount as the previous method. Become. Therefore, the width of the opening between the edge of the shutter plate 6 and the inclined floor plate 21 can be adjusted within the width of the opening compared to the conventional means, and the opening width can be adjusted within a range that does not cause clogging. The width can be selected and adjusted to a desired outflow amount easily, and the outflow amount can be adjusted accurately.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the outline of the grain transport vehicle, Fig. 2 is a partially cutaway rear view of the main part of the apparatus according to the embodiment of the present invention, and Figs. 3 and 4 are explanatory diagrams of the operation of the same. be. Explanation of drawing symbols, A, B...Fully shaft, a...Grain hopper, 1...Truck, 10...Beding platform, 2
... hopper main body, 20 ... discharge port, 21 ... inclined floor plate, 22 ... rear machine wall, 23 ... outlet, 24 ... guide groove, 23 ... grain conveyor, 3
0...Casing, 4...Screw conveyor,
40... Conveyance gutter, 41... Screw, 5... Guide plate, 5a... Guide wall, 50... Side edge, 6... Shutter plate, 60... Connecting pin, 7, 8... Link rod, 70 , 80...Elongated hole, 8a...Crank-shaped portion, 9...Operation lever.

Claims (1)

[Scope of utility model registration request] A grain conveyor 3 is installed on the rear side of the hopper main body 2, and the receiving port communicates with a discharge port 20 opened at the bottom of the rear side.
A screw conveyor 4, to which the upper ends of the left and right side edges of the conveying gutter 40 are connected, is installed at the downwardly inclined ends of the left and right inclined floor plates 21, 21, and its terminal end in the conveying direction faces the discharge port 20. Above the screw conveyor 4, there is provided a guide plate 5 whose upper surface is shaped like an umbrella when viewed from the rear, and the left and right side edges 50, 50 of the guide plate 5 and the inclined descending ends of the left and right inclined floor plates 21, 21 are provided. A pair of left and right shutter plates 6, 6 which are operated to open independently are provided in the left and right outflow ports 23, 23 formed between On the shutter plate 6,
One shutter plate 6 rotates around the fulcrum axis A.
A control lever 9 for opening and closing is connected, and the control lever 9 is connected to the other shutter plate 6 in a rotation range beyond the rotation position where the control lever 9 opens the one shutter plate 6. A shutter for opening and closing an outlet of a grain hopper in a grain transport vehicle, characterized in that the other shutter plate 6 is connected via a link rod 8 to open and close.