JPH0453211Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a rear gate device applied to a manure spreader.

(Prior Art) Conventionally, as a rear gate applied to a compost spreader, the one shown in FIG. 2, for example, is known.

The compost spreader 200 is self-propelled or towed, and includes a body 201 that can load compost and a beater 202 that is provided at the rear of the body 201 and can spread the compost backwards.

The rear gate device 100 is installed on the fuselage 201 near the front of the beater 202 to prevent the loaded compost from spilling backwards when driving. A rear gate 102 whose base end is fixed at a substantially right angle to the tip of the arm 101, and a fuselage 201.
The arm 101 is interposed between the arm 101 and the arm 101.
and an arm cylinder 103 that can look up and down.

Therefore, such a thing is the arm cylinder 10.
By expanding and contracting the rear gate 3, the tip of the rear gate 102 is raised and lowered approximately vertically from a substantially vertical lowered position to an inclined raised position, so that its tip does not come into contact with the beater 202.

However, in the conventional device, the arm 101 and the rear gate 102 are integrated so that they can be lifted up as a whole, so the overall operating height H and operating overall length L of the device are both considerably large, requiring a large space. It was hot.

(Problems that the invention attempts to solve) This invention was created in view of the problems mentioned above and to solve them, and its purpose is to:
To provide a rear gate device for a compost spreader that does not require a large space.

(Means for Solving the Problems) The rear gate device of the compost spreader of the present invention has an arm whose base end is pivotably connected to the body so that it can be tilted up and down, and a base end which is pivoted to the tip of the arm so that it can be tilted up and down. an arm drive mechanism interposed between the rear gate and the fuselage and the arm to raise and lower the arm; The feature lies in that it is constructed from a bi-foldable correction link whose tip can be corrected to move up and down approximately vertically.

(Function) The rear gate assumes a substantially vertical state in the lowered position.

At this time, the arm is in a prone state, and the correction link is in a substantially linearly extended state and in a prone state.

In this state, when the arm is moved up and down by the arm drive mechanism, the correction link moves up and down in a substantially linearly extended state, and the rear gate rises in a substantially vertical state.

In the middle of the arm's upward movement, the correction link becomes double-folded and shortened, and the rear gate becomes inclined and rises.

The rear gate assumes a substantially horizontal state in the raised position.

At this time, the arm assumes an upright state, and the correction link assumes an upright state in a double-folded and shortened state.

That is, the rear gate is raised from a lowered position to a raised position by the arm, and its direction is corrected by the correction link, so that its tip is raised substantially vertically.

When lowering the rear gate from the raised position to the lowered position, the above operation is reversed.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a side view showing a rear gate device of a compost spreader according to an embodiment of the present invention.

The main parts of the rear gate device 1 include an arm 2, a rear gate 3, an arm drive mechanism 4, and a correction link 5.

The arm 2 has a base end pivotally connected to the body 201 so as to be vertically movable.

In this example, there are a pair of left and right, and each base end is provided with a horizontal support shaft 6, and each support shaft 6 is pivotally supported on the upper part of the left and right side plates 203 forming the body 201.

The rear gate 3 has a base end pivotally connected to the tip of the arm 2 so as to be able to move up and down.

In this example, it has a plate shape, and its base ends are pivotally connected to the tips of the left and right arms 2 via a horizontal pivot 7.

The arm drive mechanism 4 is interposed between the body 201 and the arm 2 and is capable of raising and lowering the arm.

In this example, there are a pair of left and right drive shafts 8, a horizontal drive shaft 8 pivotally supported in the middle of the side plate 203, a small sprocket 9 wedged to the support shaft 6, and a large sprocket wedged to the drive shaft 8. 10 and both sprockets 9,
It consists of a chain 11 that is stretched around a chain 10, a lever 12 that is fixed to a drive shaft 8, and a cylinder 13 that is interposed between this and the lower part of a side plate 203.

The correction link 5 is a bifoldable link that is interposed between the fuselage 201 and the rear gate 3 and can correct the rear gate 3 so that its tip is raised and lowered substantially vertically from a substantially vertical lowered position to a substantially horizontal raised position. It is.

In this example, there are a pair of left and right links, a first link 14 pivotally connected to the side plate 203 at a lower front position of the support shaft 6 so as to be able to move up and down freely, a bracket 15 provided at the base of the rear gate 3, and the first link 14. Bracket 1
5 and the second link 16 interposed between the support shaft 6 and
A first stopper 17 is provided on the side plate 203 at a lower position and comes into contact with the first link 14 when it is lowered and when it is raised, and a first stopper 17 is provided on the first link 14 and comes into contact with the second link 16 when it is raised. Second stopper 1
It consists of 8.

Next, the operation will be explained based on such a configuration.

As shown by the solid line in FIG. 1, the rear gate 3 is in a substantially vertical state in the lowered position.

At this time, the arm 2 is in a prone state.
In the correction link 5, the first link 14 abuts the first stopper 17, and the first link 14 and the second link 16 are in a substantially linearly extended state, so that the correction link 5 is in a prone state.

Since the first link 14 is in contact with the first stopper 17, the rear gate 3 does not swing back and forth.

When the rear gate 3 is in the lowered position, its tip closes to a conveyor 204 provided in the body 201 and closes the loaded compost to prevent it from moving toward the beater 202.

When the cylinder 13 of the arm drive mechanism 4 is extended from this state, the large sprocket 10 is rotated counterclockwise via the lever 12, and the small sprocket 9 and the support shaft 6 are rotated via the chain 11. It is rotated in the same direction, and the arm 2 is moved up and down.

Since the speed is increased by both sprockets 9 and 10 and the chain 11, a small stroke of the cylinder 13 causes the arm 2 to rotate largely.

When the arm 2 is moved upward, the correction link 5 moves upward while its first link 14 and second link 16 remain in a substantially linearly extended state, and the rear gate 3 rises in a substantially vertical state.

During the upward movement of the arm 2, that is, after the first link 14 of the correction link 5 comes into contact with the first stopper 17, the first link 14 and the second link 16 are bent in half, and the rear gate 3 is tilted. state and rise.

When the rear gate 3 reaches the raised position shown by the chain line in FIG. 1, it becomes approximately horizontal.

At this time, arm 2 is in an upright position.
The correction link 5 is in the maximum two-fold shortened state with the second stopper 18 abutting the second link 16, and is in an upright state.

The first link 14 is in contact with the first stopper 17, and the second link 16 is in contact with the second stopper 18.
Since it is in contact with the rear gate 3, the rear gate 3 does not swing up and down.

In this manner, the rear gate 3 is raised from the lowered position to the raised position by the arm 2, and its tip is raised substantially vertically as shown by the chain line in FIG.

When the rear gate 3 is in the raised position, the loaded compost is unblocked and can be transported toward the beater 202 by the conveyor 204.

When lowering the rear gate 3 from the raised position to the lowered position, the operation is reversed to the above.

The total operating height H and the total operating length L of the rear gate device 1 are both smaller than conventional ones.

Although the arm 2, arm drive mechanism 4, and correction link 5 are a pair of left and right in the previous embodiment, they are not limited to this, and may be a single pair, for example.

In the previous embodiment, the arm drive mechanism 4 was composed of the drive shaft 8, the small sprocket 9, the large sprocket 10, the chain 11, the lever 12, and the cylinder 13, but is not limited to this, and may be composed of only the cylinder 13, for example. Also good.

In the previous embodiment, the correction link 5 uses a single first stopper 17 to restrict both the lowering and raising of the first link 14, but the present invention is not limited to this. The lowering and raising of the first link 14 may be restricted respectively.

Although the second stopper 18 is provided on the first link 14 in the previous embodiment, the correction link 5 is not limited to this, and may be provided on the second link 16, for example.

(Effects of the invention) As described above, according to the present invention, the following excellent effects can be achieved.

(1) Consisting of an arm, a rear gate, an arm drive mechanism, and a correction link, in particular, the rear gate is made to be approximately vertical in the lowered position and approximately horizontal in the raised position, and the tip thereof is raised and lowered approximately vertically. Therefore, the total operating height and total operating length can be reduced, and a large space is not required.

(2) Since the rear gate is pivotally connected to the arm so that it can be raised and lowered, and a correction link is provided, the arm can be shortened, and the driving force of the arm drive mechanism can be reduced accordingly.

[Brief explanation of drawings]

FIG. 1 is a side view showing a rear gate device of a compost spreader according to an embodiment of the present invention. 2 to 6 are enlarged side views showing the operating process of the rear gate from the lowered position to the raised position. FIG. 7 is a side view showing a conventional rear gate device. 1... Rear gate device, 2... Arm, 3...
Rear gate, 4... Arm drive mechanism, 5... Correction link.

Claims (1)

[Scope of utility model registration request] An arm whose base end is pivotally connected to the fuselage by a support shaft so that it can be tilted up and down; a rear gate whose base end is pivotally connected to the tip of the arm by a pivot so that it can be tilted up and down; and an arm that is interposed between the fuselage and the arm. An arm drive mechanism that can raise and lower the arm, and a bi-foldable mechanism that is interposed between the fuselage and the rear gate and that can correct the rear gate from a substantially vertical lowered position to a substantially horizontal raised position so that its tip can be raised and lowered approximately vertically. The correction link consists of a first link that is pivotally connected to the aircraft body at a lower front position of the support shaft so as to be able to move up and down freely, a bracket that is provided at the base of the rear gate facing forward, and the first link and the bracket. A second link interposed between the two links is provided on the fuselage at a position below the support shaft, and when the first link is lifted up, it comes into contact with the second link and the subsequent first link and second link are folded in half. A rear gate device for a compost spreader, characterized by comprising a first stopper.