JPH0144571Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a granule spreader that is suitably used for semi-forced spreading of granules such as sand and fertilizer.

[Prior Art] Granule spreaders have been known that are capable of semi-forcibly spreading granules such as sand and fertilizer without being affected by their wetness.

In other words, this type of granule spreader is equipped with a hopper that has a shutter at the granule dispersion port and stores granules inside the hopper, mounted on a wheeled, movable frame. There is a device in which a screw is provided for sequentially discharging the granules from the granule dispersion port, and this screw is rotationally driven by a motor supported on the frame. In such a spreader, a clutch is interposed between the screw and the prime mover, and the screw can be actuated or stopped by connecting and disconnecting the clutch by operating a clutch operation lever. In addition, the shutter can be opened and closed by operating a shutter operation lever.

[Problems to be solved by the invention] However, if the actuation/stopping of the screw and the opening/closing of the shutter are operated by separate levers, the operations become complicated. Granules could not be dispersed because the shutter was closed while the screw was operating, or conversely, the shutter was opened by mistake while the screw was stopped, causing the granules in the hopper to be spread incorrectly. This can easily lead to operational errors such as leakage.

The present invention aims to reliably solve these problems with a simple configuration.

[Means for solving the problem] In order to achieve the above purpose, the present invention
The granule spreader includes a hopper having a shutter at the granule dispersion port and storing the granules therein, a screw for sequentially discharging the granules in the hopper from the granule dispersion port, and a drive for driving the screw. A prime mover to
A clutch interposed between the prime mover and the screw, a movable operation means for connecting and disconnecting the clutch, and an operation force applied to the clutch from the movable operation means being transmitted to the shutter as well. The present invention is characterized by comprising a shutter interlocking mechanism that opens the shutter in response to the switching operation of the clutch to the connected position.

[Operation] According to such a configuration, when the clutch is switched to the connected position by operating the movable operating means, the power of the prime mover is transmitted to the screw, and the screw is operated. At the same time, the operating force from the movable operating means is also transmitted to the shutter by the shutter interlocking mechanism, and the shutter is opened. Therefore, by simply operating a single movable operating means, the screw can be rotated, the shutter can be opened, and the granules can be dispersed.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

Embodiment 1 (FIGS. 1 and 2) As shown in FIG. 1, this granule spreader has a hopper 3 and a prime mover 4 mounted on a frame 2 having wheels 1. The frame 2 has a push handle 5 on its rear edge, and the wheels 1 are rotatably mounted on both sides of the frame 2. A roller 6 is mounted on the rear edge side of the lower surface of the frame 2, and the hopper 3 and the motor 4 are mounted on the upper surface. The hotpot 3 has a funnel-shaped guide portion 3a in its lower half, and a tubular discharge path 7 is connected to the lower end of the guide portion 3a. The lower end of this discharge path 7 is made to face the ground as a granule dispersion port 8, and this granule dispersion port 8 can be opened and closed by a shutter 11. The shutter 11 is a plate-shaped member configured to open and close the granule dispersion port 8 from the radial direction, and is fixed to one end of a rotating shaft 12 adjacent to the granule dispersion port 8 . Note that 13 is a spring that urges the shutter 11 toward the closed position, and 14 is a stopper that locks the shutter 11 in the closed position. Furthermore, a screw 15 for feeding granules is disposed within the hopper 3. The screw 15 is connected to the hopper 3.
This is a spiral blade-like member that is integrally formed at the lower end of the rotating shaft 16 that is inserted through the axial center of the discharge passage 7.
It is rotatably inserted into the upper half portion, and by rotation, the granules (not shown) stored in the hopper 3 can be sequentially urged in the direction of the granule dispersion port 8. ing. A rotating shaft 16 of this screw 15 is rotatably supported by the hopper 3 via a bearing (not shown), and a stirring arm 17 is protruded from a middle position of the rotating shaft 16 so as to be rotatable therewith. The upper end of this rotating shaft 16 is extended outside the hopper 3. And this rotating shaft 16
The power of the prime mover 4 is connected to the upper end of the pulley 18, the belt 19, the pulley 21, the reducer 22, and the pulley 2.
3. Transmission is performed via the belt 24 and pulley 25. Note that a clutch 26 is provided between the prime mover 4 and the reduction gear 22. As shown in principle in FIG. 2, the clutch 26 has a tension pulley 29 rotatably attached to one end of a rotating arm 28 that is pivotally supported on a support shaft 27, and this tension pulley 29 is connected to the rotating arm 28. By bringing the belt 19 into contact with and separating from the belt 19 as the belt 28 rotates, power transmission can be interrupted or interrupted. That is, a spring 31 and one end of a wire 32 are connected to the rotating arm 28. The spring 31 is for biasing the rotating arm 28 in a direction in which the tension pulley 29 is separated from the belt 19, and the wire 32 is for biasing the rotating arm 28 against the spring 3.
This is for rotating against the urging force of 1. Specifically, the other end of the wire 32 is attached to an operating lever 3 which is a movable operating means attached to the handle 5.
3, and when the operator rotates this operating lever 33 in the direction of arrow X, the tension pulley 29 is pressed against the belt 19, and tension is generated in the belt 19. It's summery. Further, a shutter interlocking mechanism 34 is provided between the rotating arm 28 of the clutch 26 and the shutter 11. The shutter interlocking mechanism 34 is formed by connecting the rotating end 28a of the rotating arm 28 and the projection 12a of the rotating shaft 12 of the shutter 11 via a wire 35, and the rotating arm 28 is connected to the clutch. It is set so that when the shutter 11 is rotated in the position direction, the rotation shaft 12 of the shutter 11 is rotated in the shutter opening direction.

Next, the operation of this first embodiment will be explained. When the operating lever 33 is released, the clutch 2
The rotating arm 28 of No. 6 is rotated counterclockwise in the figure by the biasing force of the spring 31, and the pressing of the tension pulley 29 is released. Therefore, no tension is generated in the belt 19, and the power of the prime mover 4 is not transmitted to the screw 15 side. Also,
When the rotating arm 28 is held in this position, the shutter 11 is returned to the closed position by the urging force of the spring 13, that is, the position where it contacts the stopper 14 and completely closes the granule dispersion port 8. I'm forced to. When the operator operates the operating lever 33 in the direction of arrow X from this state, the operating force is transmitted to the rotating arm 28 of the clutch 26 via the wire 32, and this rotating arm 28 It rotates in the direction of arrow A against the As a result, the tension pulley 29 is pressed against the belt 19, and tension is generated in the belt 19. Therefore, the rotational power of the output shaft 4a of the prime mover 4 is transmitted to the reducer 22 via the belt 19, and the screw 15 rotates at a required speed.
At the same time, the operating force applied to the operating lever 33 is transmitted to the wire 35 of the shutter interlocking mechanism 34 via the rotating arm 28, and the rotating shaft 12 moves against the biasing force of the spring 13 as shown in the arrow. B
The shutter 11 is opened by being rotated in the direction shown in FIG.
Therefore, the granules stored in the hopper 3 are guided by the screw 15 and sent in the direction of the granule spraying port 8, and are sequentially spread onto the ground 9 from the spraying port 8. Next, when the operation lever 33 is stopped and the lever 33 is released, the rotating arm 28 of the clutch 26 is rotated in a direction away from the belt 19 by the urging force of the spring 31, and the belt 19 is rotated away from the belt 19. It becomes loose and the power of the prime mover 4 is no longer transmitted to the screw 15. In other words, the clutch 26 is disengaged and the screw 15 is stopped.
At the same time, the pulling force of the wire 35 is deenergized, and the rotation shaft 12 of the shutter 11 is moved by the spring 13.
The urging force causes the shutter 11 to return to the closed position by being turned in the opposite direction to that described above. As a result, the dispersion of the granules is stopped.

Embodiment 2 (Fig. 3) In this Embodiment 2, the power of the prime mover 4 can be transmitted to the screw 15 via a hydraulic transmission mechanism. The same reference numerals are used to denote the same parts, and the explanation thereof will be omitted.

In the granule spreader of this first embodiment, a hydraulic pump 41 is rotationally driven by the power of the prime mover 4, a hydraulic motor 42 is operated by the hydraulic pressure discharged from the hydraulic pump 41, and the screw 15 is rotated by the hydraulic motor 42. 43 is a hydraulic hose that connects the hydraulic pump 41 and the hydraulic motor 42. And the prime mover 4
A clutch 45 is interposed between the hydraulic pump 41 and a rotating shaft 44 that is rotationally driven by the hydraulic pump 41. The clutch 45 is of a conventional mechanical type and is adapted to be switched between a connected state and a non-connected state in response to rotation of a rotary lever 46. The tip of the rotary lever 46 and the operating lever 33, which is a movable operating means, are connected via a wire 47, and the tip of the rotary lever 46 and the rotating shaft 12 of the shutter 11 are connected to the shutter interlocking mechanism 49. They are connected via a wire 48 that constitutes the two.

If the configuration is like this, the operation lever 3
3 is released, the rotating lever 46 is tilted to the left in the figure by the biasing force of a spring (not shown), and the clutch 45 is in a disengaged state. Therefore, the power of the prime mover 4 is not transmitted to the hydraulic pump 41, and the hydraulic motor 42 is in a stopped state. Therefore, the screw 15 is not driven. When the rotary lever 46 is held in this position, the shutter 11 is moved to the closed position by the biasing force of the spring 13, that is, the position where it comes into contact with the stopper 14 and completely closes the granule dispersion port 8. has been reinstated. When the operator operates the operating lever 33 in the direction of arrow X from this state, the operating force is transmitted to the rotating lever 46 of the clutch 45 via the wire 47, and this rotating lever 46 It rotates in the direction of arrow A against the force. As a result, the clutch 45 switches to the connected state, and the hydraulic pump 41
starts operating. When the hydraulic pump 41 operates, high-pressure hydraulic oil discharged from the hydraulic pump 41 is sequentially supplied to the hydraulic motor 42 through the hydraulic hose 43.
is activated and the screw 15 rotates. At the same time, the operating force applied to the operating lever 33 is transmitted to the wire 48 of the shutter interlocking mechanism 49 via the rotating lever 46, and the rotating shaft 12 moves against the biasing force of the spring 13 as shown in the arrow. The shutter 11 is opened by being rotated in the direction B. Therefore, the granules stored in the hopper 3 are guided by the screw 15 and sent in the direction of the granule spraying port 8, and are sequentially spread onto the ground 9 from the spraying port 8. Next, when the operation of the operating lever 33 is stopped and the lever 33 is released, the rotating lever 46 of the clutch 45 is rotated back to the left in the figure by the biasing force of the spring, and the clutch 45 is disengaged.
The screw 15 stops. At the same time, the pulling force of the wire 48 is deenergized, and the rotating shaft 12 of the shutter 11 is rotated in the opposite direction by the biasing force of the spring 13, so that the shutter 11 returns to the closed position. As a result, the dispersion of the granules is stopped.

Note that the present invention is not limited to the above-described embodiments, and the clutch and shutter types can be modified in various ways.

Further, the shutter interlocking mechanism is not limited to one using a wire, but may also be one using a link or the like.

[Effects of the Invention] As described in detail above, according to the present invention, by simply operating a single movable operating means, it is possible to rotate the screw and open the shutter to scatter the granules. Therefore, it is possible to simplify the operation compared to the conventional system in which the screw and shutter are operated separately. It is possible to reliably eliminate operational errors such as failure to open the hopper or, conversely, the granules in the hopper leaking out due to the shutter being opened by mistake while the screw was stopped. It is something.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing an embodiment of the present invention;
FIG. 2 is an explanatory view for explaining the operation of the same embodiment, and FIG. 3 is an explanatory view for explaining the configuration of another embodiment of the present invention. 3... Hopper, 4... Prime mover, 8... Granule dispersion port, 11... Shutter, 15... Screw, 2
6...Clutch, 33...Movable operation means (operation lever), 34...Shutter interlocking mechanism, 45...Clutch, 49...Shutter interlocking mechanism.

Claims (1)

[Scope of utility model registration request] A hopper having a shutter at a granule dispersion port and storing granules therein, a screw for sequentially discharging the granules in the hopper from the granule dispersion port, a prime mover for driving the screw, and a prime mover for driving the screw. a clutch interposed between the screw and the screw, and a movable operating means for connecting and disconnecting the clutch;
a shutter interlocking mechanism that opens the shutter in response to the switching operation of the clutch to the connected position by transmitting the operating force applied to the clutch from the movable operating means to the shutter as well. A granule spreader characterized by: