JPH062489Y2 - Manure spreader - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a manure spreader for sequentially spreading manure carried on a trolley over a field.

[Prior Art] A conventional manure spreader is disclosed in JP-A-59-21306.

As shown in FIG. 5, this manure spreader is stretched between the manure 2c provided on the vehicle body 2b and the front and back of the floor of the manure box 2c continuously or intermittently. Floor conveyor 4 for transferring compost 3 and beater 5 for spreading outwardly the compost 3 that is axially supported and transferred to the open end of the compost box 2c.
And is configured. The drive mechanism of the floor conveyor 4 is provided with a feed shift adjusting unit that converts an increase / decrease in the force with which the beater 5 is pushed by the compost into a change in the feed amount of the floor conveyor 4, so that the spread amount of the compost 3 is automatically equalized. I am trying.

[Problems to be Solved by the Invention] However, in the above-described conventional technique, the spraying amount can be automatically equalized only when the traveling speed of the vehicle body 2b is constant. In other words, the fields that actually require composting are
It includes not only flat land but also sloping land. In such composting work in the field, the traveling speed is reduced to obtain the climbing force on the uphill, the torque of the traveling wheels 2a is increased to climb the plate, and the traveling speed is reduced to prevent the danger on the downhill. Although the operation is performed, in the above-mentioned conventional technique, since the spray amount per unit area changes when the traveling speed is changed in such a manner, it is necessary to reset the spray amount each time, which is a troublesome work. Met.

To cope with such a problem, there has been proposed one in which the spray amount control is made to respond to the vehicle speed of the bogie (Japanese Utility Model Laid-Open No. 55-75214), and by using this configuration, the above problem is once solved. There is a possibility that However, in this proposal, since the variable speed DC motor is used to drive the floor conveyor, the cost becomes high and it is not preferable from the viewpoint of energy saving.

On the other hand, as mechanical driving force transmission devices equipped with a speed change mechanism, there are JP-A-54-162612 and JP-B-62-13449, but in the former case, a cam that bites when rotating in a specific direction is provided. Since the rotation driving force from the tractor is converted into intermittent rotation by a special cam clutch, the floor conveyor speed may become unstable if the cam wears. Further, in the latter case, since the V-belt of the continuously variable transmission is configured to be pushed toward the shaft center side of one pulley to control the shift, there is a problem in reliability and durability of transmission of the driving force in the V-belt.

Therefore, the present invention can control the floor conveyor according to the vehicle speed,
Moreover, it was created to provide a durable and reliable manure spreading device.

[Means for Solving the Problem] The present invention is directed to a trolley towed by a tractor, a floor conveyor for unidirectionally transporting manure provided on the trolley and placed on the trolley, and unloading of the floor conveyor. In a manure spreader having a beater that is provided at the end and spreads the manure that has been conveyed, a crank arm having a base end fixed to an output shaft from a tractor, and one end pivotally attached to a tip of the crank arm. A first link arm, a second link arm having one end pivotally attached to the other end of the first link arm and the other end loosely fitted to the drive shaft of the floor conveyor, a ratchet wheel attached to the drive shaft, and a link. A notch provided on the arm for meshing with the ratchet wheel to intermittently rotate by its operation, and a notch provided on the conveyor drive shaft so as to be swingable and engaged with the notch on the swing end side to engage with the ratchet wheel. Notch guide with a guide surface that limits the mating section and swinging the notch guide according to the detection value of the speed detector that detects the traveling speed of the bogie to move the guide surface along the meshing surface. And an electric cylinder that adjusts the rotation stroke of the notch.

[Operation] With the above configuration, the crank arm and the link arm change the rotation of the output shaft from the tractor into the swing around the drive shaft of the floor conveyor, thereby operating the notch along the peripheral edge of the ratchet wheel. Interlocking causes the conveyor drive shaft to rotate intermittently. The conveyor notch guide oscillates in a predetermined direction when the speed of the carriage becomes slow, shortens the engagement section between the notch and the ratchet wheel, and reduces the rotation of the drive shaft of the floor conveyor. Further, when the trolley speed increases, it swings in the opposite direction to lengthen the engagement section between the notch and the ratchet wheel, increasing the rotation speed of the drive shaft of the floor conveyor.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show an embodiment of a manure spreader according to the present invention, in which the same components as those of the conventional one are designated by the same reference numerals.

This manure spreader 1 transports a trolley 2 which is towed by a tractor T (see FIG. 5) and a transport map on the trolley 2 from the front to the rear in the traveling direction and mounts it on the transport surface. A floor conveyor 4 that conveys the manure 3 to be placed rearward, a beater 5 that is provided at the carry-out end of the floor conveyor 4, and is driven to rotate to spread the manure 3 from the carry-out end to the rear thereof, and a trolley. And a spraying control means 6 for detecting the vehicle speed and increasing or decreasing the amount of movement of the floor conveyor 4 according to the vehicle speed.

The dolly 2 includes a body 2b that supports wheels 2a and a manure box 2c.
Is provided, and the floor conveyor 4 running around the floor surface 2d of the manure manure box 2c is stretched. On the carry-out end side of the bottom conveyor 4, there is provided a speed change adjusting device 9 serving as a spray control means 6, a beater 5 is mounted on a shaft, and a leveling beater 10 is mounted on the front and diagonally above the beater 5. There is. The floor conveyor 4, beater 5, and leveling beater 10 are adapted to be rotated by an input shaft 11 connected to a PTO shaft (not shown) of the tractor T, and at that time, only the floor conveyor 4 changes gears. The adjusting device 9 adjusts the running speed according to the vehicle speed.

The vehicle speed is detected by a speed detector 12 provided near the axle 2e. The speed detector 12 is an electromagnetic or photoelectric type rotation speed detector, and is adapted to convert the rotation speed of the axle 2e into a speed. The speed detector may be configured to detect the ground speed using a radar.

In FIG. 2, 4a is a floor conveyor chain, 4b is a drive shaft of the floor conveyor, 13 is a gearbox connecting the input shaft 11 and the output shaft 14, 15 is a sprocket fixed to one end of the output shaft 14, Reference numeral 16 denotes a chain wound around a sprocket 15 and another sprocket 17 fixed to one end of the beater shaft 5a, and 18 is fixed to another sprocket 19 fixed to the beater shaft 5a and one end of a leveling beater shaft 10a. A chain hung on a sprocket 20
21 is a towing rod for connecting the truck 2 to the tractor T, and 5
b is a beater blade.

As shown in FIG. 3, the gear shift adjusting device 9 includes a ratchet wheel 8a fixed to the drive shaft 4b of the floor conveyor and a notch 8 for intermittently rotating the ratchet wheel 8a.
c and a notch drive mechanism L for operating the notch 8c
A notch guide 40 for appropriately restricting engagement between the notch 8c and the ratchet wheel 8a, and the notch guide 40
Is mainly configured by an electric cylinder 24 that appropriately operates according to the vehicle speed detected by the speed detector 12.

The ratchet wheel 8a is provided with teeth 8b on its peripheral edge so as to rotate only clockwise in the figure, and counterclockwise rotation is blocked by engagement of the fixed notch 8d. The fixed notch 8d is pressed against the holding plate 8e by the compression spring 8f and is appropriately held.

The notch drive mechanism L includes an output shaft 14a integrated with the output shaft 14.
A crank arm 34 fixed to this as a crank shaft, a first link arm 35 whose one end is rotatably connected via a crank pin 34a provided at the tip of the crank arm 34, and a first link arm. One end is pivotally attached to the other end of 35, and the other end is composed of a second link arm 36 loosely fitted to the drive shaft 4b of the floor conveyor.

The base end of the notch 8c is pivotally attached to the pivot shaft 37 that connects the first link arm 35 and the second link arm 36, and the tip of the notch 8c faces the peripheral edge of the ratchet wheel 8a. The notch 8c is held by a rod 38 rotatably attached to the second link arm 36 via a shaft 38a, and a coil spring 39 provided around the rod 38 is provided.
Are pressed by the teeth 8b of the ratchet wheel 8a so as to be appropriately meshed with the teeth 8b.

Further, the notch guide 40 adjusts the stroke amount of the rotary feed of the ratchet wheel 8a in the notch 8c. The notch guide 40 is rotatably supported by the drive shaft 4b of the floor conveyor, and the tip of a notch guide arm 40a extending upward in the drawing is pivotally supported by the tip of the rod 24a of the electric cylinder 24 via the shaft 40b. The swing end side extends downward to form a guide surface 40c that abuts the tip of the notch 8c.

The guide surface 40c has an arc portion 40d formed with a radius of curvature slightly longer than the radius of the ratchet wheel 8a,
A slanted portion 40e obliquely intersecting the peripheral edge of the ratchet wheel 8a is formed in the clockwise direction forward of the arc portion 40d. The electric cylinder 24 is connected to a control device 29 connected to the speed detector 12, and the rod 24a is advanced and speeded up when the vehicle speed of the carriage 2 slows according to the detection value of the speed detector 12. It is sometimes configured to degenerate.

Therefore, the rotational power from the tractor PT0 shaft is transmitted to the output shaft 14a, whereby the crank arm 34 rotates counterclockwise, the first link arm 34 rotates counterclockwise, and the first link arm 34 rotates. 35 and the second link arm 36, the notch 8c is advanced in the process of increasing the angle on the notch 8c side, and the notch 8c is moved in the process of decreasing the angle.
c is retracted. Then, in the stroke of forward movement of the notch 8c, the ratchet wheel 8a is rotated clockwise by the engagement of its tip with the tooth 8b of the ratchet wheel 8a, and in the stroke of backward movement of the notch 8c, the tip thereof is moved to the ratchet wheel 8a. The ratchet wheel 8a is stopped by being braked by the fixed notch 8d. Therefore, the drive shaft 4b of the floor conveyor, which is integrated with the ratchet wheel 8a, is rotationally driven intermittently.

At this time, when the rod 24a is extended by the operation signal of the electric cylinder 24 or the control device 29, the notch guide 40 rotates clockwise, and the notch 8c moves forward in the stroke.
The distance at which the tip of the notch 8c abuts the arc portion 40d of the guide surface 40c becomes longer, and the distance by which the tooth 8b at the outer edge of the ratchet wheel 8a is engaged and rotated becomes shorter. As a result, the notch 8c becomes effective. The rotation stroke is reduced, and the rotation amount of the drive shaft 4b of the floor conveyor due to the intermittent rotation is also reduced.

When the electric cylinder 24 contracts the rod 24a, contrary to the above, the effective rotation stroke of the notch 8c increases, and the rotation amount of the drive shaft 4b of the floor conveyor due to intermittent rotation also increases.

Thus, by the notch drive mechanism L that converts the rotation of the output shaft 14 into the swing around the drive shaft 4b of the floor conveyor 4,
The notch 8c is meshed with the ratchet wheel 8 to cause the floor conveyor 4 to run intermittently, and the notch guide 40 for limiting the engagement section between the ratchet wheel 8 and the notch 8c is provided to the speed detector 12 and the control device 29. Since the electric cylinder 24 which is operated according to the above-described method is used to swing the electric cylinder 24 appropriately, the conveyance amount of the floor conveyor 4 can be stretched according to the speed of the trolley 2, and even if the vehicle speed changes due to ups and downs in the field, etc. The manure can be spread evenly.

Further, since the floor conveyor 4 is rotatably traveled by using the rotational driving force transmitted from the tractor to rotate the barter 5, a separate drive source is not required and high cost can be avoided. , Can contribute to energy saving.

Then, the notch 8C and the ratchet wheel 8 are engaged with each other very reliably, the rotational drive force is properly transmitted, and an unreasonable force may be applied to the notch 8c and the notch drive mechanism L during speed control. High durability and reliability.

FIG. 4 shows another embodiment of the present invention, in which the smoothing beater of the above embodiment is eliminated, the torque fluctuation of the beater 5 is detected, and based on this torque fluctuation and the traveling speed of the carriage 2, The traveling speed of the floor conveyor 4 is controlled.

That is, the shaft 5a of the beater 5 is provided with the torque detector 41, and the control device 29 operates the shift adjusting device 9 by a signal sent from the torque detector 41 and the speed detector 12 to change the movement amount of the floor conveyor 4. This is adjusted to make the amount of manure spread evenly. Therefore, the controller 29
The transfer amount of the manure 3 with a wavy upper surface and unevenness is grasped by the torque fluctuation generated in the beater 5, and further, the gear shift adjusting device 9 is driven according to the gear shift change caused by the ups and downs of the field to drive the floor conveyor. 4 will control the speed.

Since other configurations and operations are the same as those of the above-mentioned embodiment,
The same reference numerals are given in the drawings, and the description thereof will be omitted.

[Effects of the Invention] In short, according to the present invention, the following excellent effects are exhibited.

A crank arm and a link arm that convert the output rotation from the tractor into swing, a notch that intermittently rotates the ratchet wheel by these arms, a notch guide that controls the engaging section of the ratchet wheel and the notch by swinging, and a truck Since it has an electric cylinder that swings the notch guide according to the traveling speed, it is possible to adjust the conveyance amount of the floor conveyor according to the speed of the trolley, and it is possible to spray manure at all times evenly. No separate drive source is required, high cost can be avoided, and notches and arms are not unduly applied during speed control, and high durability and reliability can be obtained.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a manure spreader according to the present invention, FIG. 2 is a partially cutaway front view of FIG. 1, and FIG. 3 is a detailed view of essential parts of FIG. FIG. 4 is a plan view showing another embodiment of the present invention, and FIG. 5 is a side view showing a conventional manure spreader. In the figure, 2 is a dolly, 3 is manure, 4 is a floor conveyor, 4b is a drive shaft of the floor conveyor, 5 is a beater, 8 is a ratchet wheel, 8b is a peripheral tooth as an engaging surface, 8c is a notch, and 12 is a speed. Detector, 14 output shaft, 24 electric cylinder, 34
Is a crank arm, 35 is a first link arm, 36 is a second link arm, 40 is a notch guide, and 40c is a guide surface.

Claims (1)

[Scope of utility model registration request] 1. A trolley that is pulled by a tractor to travel, a floor conveyor that is provided on the trolley and that conveys manure in one direction, and a trolley that is provided at the unloading end of the floor conveyor. In a manure spreader having a beater for spreading the manure, a crank arm having a base end fixed to an output shaft from the tractor, and a first link having one end pivotally attached to a tip of the crank arm. An arm, a second link arm having one end pivotally attached to the other end of the first link arm and the other end loosely fitted to the drive shaft of the floor conveyor, a ratchet wheel attached to the drive shaft, and the link A notch provided on the arm for engaging with the ratchet wheel to intermittently rotate by the operation, and a notch provided on the conveyor drive shaft so as to be swingable, and engaged with the notch on the swing end side to engage the ratchet. A notch guide formed with a guide surface that limits the meshing section with the wheel, and the notch guide is swung according to the detection value of a speed detector that senses the traveling speed of the carriage, and the guide surface is made into the meshing surface. A manure spreader, comprising: an electric cylinder that adjusts the rotation stroke of the notch by moving the notch.