JPS5825775Y2 - Stem culm pulling device - Google Patents

Description

[Detailed Description of the Invention] The present invention consists of a driving sprocket and a tension sprocket arranged in parallel on the upper end side of the lifting case, and a sprocket arranged on the lower end side of the case. The culm lifting pawls are attached to the chain at appropriate intervals so as to be able to rise and fall freely, and on the outer periphery from the drive sprocket to the tension sprocket, there is a protrusion shaped like the attachment base end of the lifting pawl. The present invention relates to a stem culm lifting device which is provided with a undulation regulating device in the form of an elastic body that guides the stem culm lifting claw in an upright position between the chains and moves the stem culm lifting claw in an upright position while changing and holding it in a laid down position.

In the above device, the proximal end of the lifting claw, which can be raised and lowered freely, is guided by the undulation regulating device to change the posture of the lifting claw, so that the tip of the claw, where the circumferential speed is high, comes into contact with the abutting member. This has the advantage that it can suppress the generation of hitting noises due to contact, compared to a type in which the posture is changed by changing the position.

However, in order to ensure its effect and be effective, the distance between the undulation regulating device and the chain must be constant throughout, and this will prevent the chain from elongating during use. This was a problem when installing the tension sprocket on the top of the case, which moves to absorb the tension.

The present invention was developed in view of the above circumstances, and an object of the present invention is to provide a stem culm pulling device that can always keep the distance constant while tensioning the stretched chain.

The technical feature of the stem culm lifting device of the present invention is that the entire undulation regulating device is integrally constructed, the drive sprocket side thereof is attached to the lifting case, and the tension sprocket side is attached to the tension sprocket. It is attached to the support arm and has the following effects.

In other words, with the transition of the tension sprocket,
The part of the undulation regulating device that faces this can also be moved in the same direction, and the distance from the chain can be maintained constant over the entire undulation regulating device, so that the distance can be made wider than necessary. It is possible to avoid the entire length from becoming narrow or narrow, and the guiding action of the stem culm lifting claw can be fully exerted without being held in a lying position by the undulation regulating device, and the tension state of the chain can also be maintained. Good operation of the stem culm pulling device was obtained.

Embodiments of the present invention will be described below based on the drawings.

The culm lifting claws 6 and 6 are installed at appropriate intervals across the driving sprocket 3, tension sprocket 4, and guide sprocket 5 provided at the lower end, which are provided at the upper end of the upper and lower case parts 1 and 2. ... is wound around a chain 7 rotatably pivoted around an axis P, and as the chain 7 rotates, the proximal end of the pawl 6 is attached to the lower case portion 2. Place it in contact with the attached claw raising rail 8,
The claws 6 are arranged to protrude from openings formed along the longitudinal sides of the upper and lower halves of the case 9 and move upright.

An arm 12 that freely rotatably holds the tension sprocket 4 is pivotally supported on the lower case 2 so as to be swingable about an axis X, and a tension spring 13 biases the arm 12 to swing. , the chain 7 is always kept under tension by absorbing the elongation during use.

At the end of the pawl raising movement path, an undulation regulating device 10 is provided on the outer periphery of the drive sprocket 3 and the tension sprocket 4, the whole being made of an elastic body and integrally constructed. As the chain 7 moves, a protrusion 6a formed at the base end of the claw 6
by bringing it into contact with the regulating tool 10, so as to lie down,
The structure is such that the claw 6 is moved into the case 9 while maintaining the prostrate position.

This undulation regulating device 10 has a portion facing the drive sprocket 3 attached to the lower case 2 so as to be swingable about the axis Y, and a portion 10a facing the tension sprocket 4 attached to the arm 12. More protruding shaft 1
4, this portion 10a is configured to move in the same direction as the direction in which the tensioning sprocket 4 moves around the axis Y.

With this configuration, even if the sprocket 4 moves due to tension in the chain 7, the distance between the sprocket 4 and the elastic body portion 10a does not change, and the elongation of the chain 7 during use is absorbed and the chain 7 While maintaining tension, the nails are properly maintained in a laid-down position, and a change in the distance between the undulation regulating device 10 and the chain 7 is prevented.

In addition, as another example, the tension sprocket is as follows:
Of course, it may be of a type that moves in parallel.

[Brief explanation of the drawing]

The drawings show an embodiment of the stem culm pulling device according to the present invention, in which FIG. 1 is a front view with the upper case removed, FIG. 2 is an enlarged front view of the main part, and FIG. FIG. 4 is a sectional view taken along line I--IV in FIG. 2. 3.4.5...Sprocket, 6...
Stem culm pulling claw, 6a...Protrusion, 7...
Chain, 9... Case, 10... Up and down regulating device.

Claims (1)

[Scope of utility model registration request] A driving sprocket 3 and a tensioning sprocket 4 arranged in parallel on the upper end side of the lifting case 9, and the case 9
The culm lifting claws 6 are attached at appropriate intervals to the chain 7 which is wound around the sprocket 5 disposed on the lower end side of the inside, and the tension sprocket 4 is connected from the drive sprocket 3 to the tension sprocket 4. During this period, a protrusion 6a formed at the base end of the lifting claw 6 is guided between the chain 7 and the stem culm lifting claw 6 in an upright position to be changed to a laid down position. A stem culm pulling device is provided with an undulation regulating device 10 made of an elastic body that can be moved while being held, the entire undulation regulating device 10 is integrally constructed, and the drive sprocket 3 side thereof is connected to the A stem culm lifting device characterized in that it is attached to a lifting case 9 and the tension sprocket 4 side is attached to a support arm 12 of the tension sprocket 4.