JPH0221897Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a safety structure for the output section of the power for driving a cassette tank in a combine harvester.

(2) Prior Art Usually, a combine harvester is structured so that a bag can be attached to the combine harvester so that the grain can be filled into the bag after threshing and storing the grain in the main tank.

However, the storage capacity of this tank and bag is small, and it is necessary to replace the bag every time the bag is full, which is cumbersome and inefficient. Therefore, recently, a device called a cassette tank has been installed in place of the bag as an attachment to increase the amount of grain stored in the combine.
When the main tank and the cassette tank are full of grains, they can be directly discharged onto the loading platform of a truck or the like.

In other words, the amount of grain stored is increased and the work of refilling the bag is omitted. Such a cassette tank is configured to receive power from a combine harvester and discharge grains through a pipe through a thrower to the outside of the tank, and a lever is made to protrude toward the front of the tank so that this operation can be performed from the front of the tank. There is.

(3) Purpose The present invention aims to solve the problem that occurs when the operating lever attached to the cassette tank is left in the state of being engaged, that is, receiving the output from the output section of the combine, when such a cassette tank is attached to the combine harvester. This was done to remove it. In other words, in the above condition, there is an inconvenience that the drive section of the cassette tank is activated at the same time as the cassette tank is installed, so in order to prevent this, the operating arm of the power intermittent clutch on the combine side must be in the engaged state. A means is provided to prevent engagement with the tip of the operating lever on the cassette tank side.

(4) Configuration At the output part of the power for driving the cassette tank in the combine, a V-belt transmission device is interposed in the power transmission path from the engine of the combine to the joint for driving the cassette tank, and between the V-belt and the joint. A clutch is provided for connecting and disconnecting the power transmission between the two, and an arm is provided for engaging and disengaging the clutch by a rotational action, and the arm has the tip of a clutch operating lever attached to the cassette tank side. The safety structure of the output part is formed by fixing a contact plate that prevents the lever from engaging with the arm when the lever is in the clutch engaged state.

(5) Embodiments Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 2 shows an example of a combine harvester that can be equipped with a cassette tank.

In the figure, 10 is an engine, 12 is a running section,
Reference numeral 14 indicates a reaping section, 16 indicates a grain removal section of the main tank 17, 18 indicates a waste straw processing section, and other components include a threshing section (not shown).

Here, a space is provided between the traveling section 12 and the main tank 17 for installing a cassette tank shown in the third figure.

Reference numeral 20 is a platform on which the cassette tank is placed, and 22 is a cover that covers an output section for supplying power from the engine 10 to the cassette tank. When installing the cassette tank, the cover 22 is removed.

Therefore, this output section will be explained using FIG. 1 and FIG. 4.

In the figure, 24 is a counter, which is interposed in the power transmission path from the engine 10 of the combine to the cassette tank drive joint 26. The engine 10 and the counter 24 and the counter 24 and the joint 26
are connected by first and second V-belt transmission devices, respectively.

Starting from the first V-belt transmission device, 28 is a pulley that receives power from the engine 10, 30 is a pulley for turning a hydraulic pump that is a power source for driving various devices of the combine, and 32 is a cassette tank. Large pulley in the counter for 3
Reference numeral 4 denotes a V-belt, which is wound around the pulleys 28, 30, and 32, and is applied with appropriate tension by a tension pulley 36.

The tension pulley 36 is connected to the shaft 3 of the pulley 32.
Another arm 42 is rotatably installed at one end of an arm 40 that is rotatable about 8 as a fulcrum, and rotates fixedly with the arm.
The spring 44 applied to the V-belt 3
Forced in four directions.

Next, the second V-belt transmission device will be explained.
46 is a small pulley coaxial with the large pulley 32 in the counter, and 48 is a pulley for joint rotation.

The joint 26 is for transmitting power to the cassette tank.

50 is a V-belt of a different type from the V-belt 34 described above.
A belt is wound between the pulley 46 and a pulley 48 that rotates the joint 26.

The V-belt 50 of the second V-belt transmission device is thicker than the first V-belt 34, and if the first V-belt 34 is, for example, A size, the second V-belt 50 are set to B size, and consideration is given so that they do not affect each other dynamically.

Reference numeral 52 denotes a clutch which is turned on when the tension pulley 54 is pressed against the V-belt 50 and turned off when it is released, so that power transmission through the joint 26 is interrupted.

The tension pulley 54 is rotatably provided at the end of an arm 58 that rotates around a fulcrum 56.
The above-mentioned "on" and "off" operations are performed by the rotating motion of the other arm 60 that rotates in a fixed manner.

Note that 61 is a belt holder for preventing the belt 50 from escaping from the tension pulley 54.

These arms 58, 60 are rotated in conjunction with a lever operated on the front surface of the cassette tank, which will be described later.

Note that a direction changer 62 (not shown) having two built-in spur gears is interposed between the joint 26 and the pulley 48.

Next, the cassette tank is shown in Figures 3 and 5.
The configuration is as shown in FIGS. 6 and 7.

The cassette tank is installed and fixed on the stand 20 so that the joint 64 (FIG. 7) on the tank side engages with the joint 26 on the combine harvester side.

First, joint 2 of the output section of the combine
A lever device for operating the clutch 52 to receive power from the clutch 6 will now be described. In FIGS. 5 and 6, reference numeral 66 denotes a handle lever, which is inserted into a substantially L-shaped guide hole 68 formed in the front wall of the cassette tank.

The guide hole 68 consists of a vertical hole and a horizontal hole that communicate with each other, and the movement of the handle lever 66 along the vertical hole causes the operation of the clutch 52 and the movement of the handle lever 66 along the horizontal hole.
The movements of 6 correspond to the operation of the shutter built into the cassette tank.

Further, 70 is a bearing member for vertical rotation provided so that the handle lever 66 can vertically rotate along the inside of the vertical hole.

The member 70 can freely rotate around a shaft 74 fixed to an upright wall 72 in the tank.

Reference numeral 76 denotes a vertically rotating lever that is connected to the opposite side of the handle lever with the vertically rotating bearing member interposed therebetween. This vertically rotating lever 76 and the handle lever 66
A shock absorber is installed between the lever and the lever to reduce the impact of operating the lever. That is, 78 is an arm that moves integrally with the vertical rotation bearing member 70, and is connected to the vertical rotation lever 76 by a tension spring 80, and 82 is a stopper that supports the vertical rotation lever 78. It is fixed at 76.

When the handle lever 66 is pushed down from the solid line position in FIG. 6 to the chain line position, the vertically rotating lever 76 rises from the solid line position to the chain line position, and the arm 60 of the clutch 52 (FIG. 1) is pushed up. is,
Tension pulley 54 presses V-belt 50. As a result, the power from the engine 10 is transmitted to the cassette tank via the pulley 48 and the joints 26, 64.

Conversely, if the handle lever 66 is pushed upward again, the tension pulley 54 releases the V-belt 50, the V-belt 50 idles, and the joints 26, 64 no longer rotate.

Note that pushing up the handle lever 66 is as follows:
This is automatically done by a spring 86 that connects an arm 84 fixed to the vertical rotation bearing member 70 and the upright wall 72. Therefore, in order to hold the clutch 52 in the "on" state, it is necessary to insert the handle lever 66 into the lateral hole using a laterally rotating bearing member, which will be described later.

Reference numeral 88 denotes a horizontally rotating bearing member that is integrated with the vertically rotating bearing member, into which the tip of the handle lever 66 is inserted. Therefore, the handle lever 66 can be rotated laterally along the inside of the horizontal hole after being rotated vertically.

Reference numeral 90 denotes a horizontally rotating lever, which is connected and fixed on the opposite side of the horizontally rotating bearing member. The horizontally rotating lever 90 is for opening and closing the shutter of the cassette tank.

The shutter 92 opens and closes between the opening 94 at the top of the tank and the screw conveyor 96 so that the grains (not shown) in the tank can be removed from the screw conveyor 96.
This acts to intermittent the flow into the water.

Reference numeral 98 is an arm for rotating the shutter 92, and since this arm 98 and the horizontal rotation lever 90 are in communication, after pulling down the handle lever 66 along the vertical hole, the shutter 92 is rotated. When rotated along the same direction, the lateral rotation lever 90 rotates the arm 98 and opens the shutter 92.

Here, when installing the cassette tank on the cassette stand 20, it is also expected that the handle lever 66 will be in the "on" state.

In such a case, as soon as the tank is placed on the platform 20, the clutch 52 is engaged by the action of the arm 60, belt holder 61, etc., and the joints 26, 64, screw conveyor 96, thrower blade 100, etc. suddenly rotate, which is dangerous. Also, the grains remaining in the tank are discharged outside the tank, which is inconvenient.

Therefore, in the present invention, a contact plate 102 is provided on the arm 60 of the clutch, which prevents the tip of the clutch operation lever 76 attached to the cassette tank side from engaging with the arm 60 when the lever is in the clutch engaged state. is fixed.

When the handle lever 66 is in the "on" state, the vertically rotating lever 76 comes into contact with the abutting plate 102, making it impossible to push the cassette tank.

Thus, the operator noticed an abnormality in the lever 66,
After returning the lever to the clutch ``off'' position and installing the cassette tank, turn the clutch ``on'' to start rotating the screw conveyor 96 and turn the lever to the shutter ``open'' position. Then, the shutter 92 opens and the grains flow into the rotating screw conveyor 96, are thrown upward by the rotating blades 100 of the thrower, and are sent to the thrower cylinder 104.
is released to the outside of the tank through the

Trucks etc. are waiting outside the tank.
The grain is received on the carrier. To stop the release of grain, the handle lever 66 can be moved in the opposite direction, which closes the shutter 92 and automatically raises it further along the vertical hole of the guide hole 68 under the action of the spring 86. The clutch 52 is disengaged and the screw conveyor 98 also stops rotating.

(6) Effects As described above, the present invention interposes a V-belt transmission device in the power transmission path from the engine 10 of the combine to the joint 26 for driving the cassette tank at the output part of the power for driving the cassette tank of the combine. , a clutch 52 is provided between the V-belt and the joint for connecting and disconnecting power transmission between the two, and an arm 60 is provided that engages and disengages the clutch by a rotational motion, and a cassette is attached to the arm. Since the clutch operating lever 76 attached to the tank side has a fixed abutment plate 102 that prevents the tip of the lever from engaging with the arm when the lever is in the clutch engaged state, the clutch operating lever 76 is in the "engaged" state. If this happens, the tip of the lever will be blocked by the abutting plate, making it impossible to move the cassette tank further into the tank.

Therefore, if there is no abutment plate 102 and the operating lever 76 and arm 60 engage in the above state, the clutch 52 will engage and the screw conveyor 96 will suddenly rotate, and the joints 26, 64 will
These parts become half-engaged and cause damage such as abnormal noises, etc., but such problems can be prevented.

Further, the safety mechanism according to the present invention is a plate provided on the arm of the clutch device, and has an extremely simple structure, so it is difficult to break down and can be easily assembled.

[Brief explanation of drawings]

FIG. 1 is a front view of the input section of the combine harvester shown in FIG. 2. FIG. 2 is a perspective view of an example of a combine to which a cassette tank can be attached. FIG. 3 is a perspective view of the cassette tank. Figure 4 is the first
It is a longitudinal cross-sectional view of the figure. 5 is a view taken along the direction arrow V in FIG. 3, FIG. 6 is a view taken along the direction arrow in FIG. 3, and FIG. 7 is a sectional view taken along the line - in FIG. 52...clutch, 60...arm, 66...handle lever, 76...vertical rotation lever, 102...stop plate.

Claims (1)

[Scope of utility model registration request] At the output part of the power for driving the cassette tank in the combine, a V-belt transmission device is interposed in the power transmission path from the engine 10 of the combine to the joint 26 for driving the cassette tank,
A clutch 52 is provided between the V-belt and the joint to connect and disconnect the power transmission between the two, and an arm 60 is provided which engages and disengages the clutch by a rotational motion, and a cassette tank is attached to the arm. The safety structure of the output section is formed by fixing a contact plate 102 that prevents the tip of a clutch operating lever 76 attached to the side from engaging with the arm when the lever is in the clutch engaged state.