JPH0115314Y2 - - Google Patents

Description

[Detailed description of the invention] Conventionally, it is already known that a detector is installed on the upper side of the focusing section of a bundling machine to detect clogging due to bundling errors or bundle jams, but this method detects clogging caused by bundling. Since the clog could not be detected until it had spread to the upper part of the grain, the discovery of the clog was delayed and the work to remove the clogged grain culm was difficult.

It is also known to provide a special detection device for just detecting the clogging, but this has the disadvantage of a complicated structure and high cost.

The purpose of the present invention is to improve the above-mentioned drawbacks, and the purpose of the present invention is to provide a packer, a needle, and a guide plate in the lower part of the focusing part, and a knot part in the upper part.
a detection rod that protrudes above the guide plate when viewed from the length direction of the culm to be focused, extends along the raking direction of the culm, extends from at least the starting end of the raking locus of the culm to the vicinity of the rear door, and guides the culm; This device is characterized in that a clogging detection switch is inserted into the control circuit of an actuator such as an alarm, which is turned on when the detection rod is moved downward.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on the base of the combine harvester, and a straw conveying device 2 is installed in the upper part of the dust sorting room, extending from the culm outlet to the rear of the machine, and a binding device 3 is installed in the rear of the machine. is installed.

The bundling device 3 includes a packer 6 and a needle 7 attached to a transmission case 4 at the bottom of the bundling part 5;
It consists of a knot part 8 and a sweeper 9 provided above the converging part 5, and a knot shaft 10 has a chain case 1 attached to a timing shaft extending from the transmission case 4 toward the ear side.
1, and a door 12 is provided at the rear of the focusing section 5.

Reference numeral 13 denotes a pair of left and right guide plates provided along the lower part of the converging section 5, and the portion facing the nodule section 8 is formed into an opening 14 through which the packer 6 and the needle 7 go in and out.

Furthermore, a pair of left and right scraping wheels 15 made of star foil are provided at the front of the knot 8.

The rear cover 16 of the binding device 3 has a tilting fulcrum 17a made of an elastic rod and wound around the base.
Attach the base end of the detection rod 17 having a
7 protrudes slightly from the upper surface of the guide plate 13 as shown in FIG. 1A, and extends forward through the middle part of the opening 14 as shown in FIG. It is bent downward so as to enter below the guide plate 13.

Further, the front end of the detection rod 17 is connected to an L-shaped frame 1.
8, and a clogging detection switch 19 is installed below it.

In the above-mentioned device, the waste straw discharged from the rear end of the waste straw conveying device 2 is scraped by the scraping wheels 15, 15 toward the collecting part 5, and the packer 6 successively scrapes it into the collecting part 5. , the waste straw is pushed toward the door 12 by the police car 6, and when the door 12 senses that a predetermined amount of waste straw has been raked in, the transmission case 4
When the inner one-turn clutch is engaged, the needle 7 winds the string around the bundled waste straw, the knotting section operates, and the sweeper 9 removes the knots to release the bundle.

During the collecting of the waste straw, the detection rod 17 guides the waste straw by the packer 6 and prevents straw waste and straw from falling into the opening 14, and when the needle 7 and the packer 6 return downward, the detection rod 17 pulls in the waste straw. prevent.

Then, the binding operation is performed normally, and the door 12
If the focusing section 5 is not clogged due to malfunction, nodule error, bundle discharge error, or other causes, the detection rod 17
is lowered by the culm pressure of a predetermined amount of collected waste straw, turning on the clogging detection switch 19. Immediately after releasing the bundle, the detection rod 17 rises and the clogging detection switch 19 is turned on.
It turns off. This clogging detection switch 19 is the third one.
The detection signal of the clogging detection switch 19 is inserted into the control circuit of the actuator 22 shown in the figure, and the detection signal of the clogging detection switch 19 is transmitted within the time set by the timer 21, that is, from the time when the clogging detection switch 19 is activated to the end of bundle release. Since the OFF state is maintained for a slightly longer period of time, no current flows to the actuator 22, such as an alarm installed in the control section or an electromagnetic clutch installed on the input shaft of the binding device.

Note that 20 is a switch that is turned ON when the threshing clutch is engaged and the binding device 3 is also driven.

However, if the converging section is clogged with culms and the clogging detection switch 19 is turned on even after the bundle discharge is finished, the switch 23 linked to the timer 21 is turned on.
Then, a current flows through the actuator 22 to issue an alarm, or the electromagnetic clutch is disengaged, so that waste straw continues to be raked into the collecting part, causing severe clogging of the collecting part and the raking path leading to it. do not have. However, when the actuator 22 is used as an alarm, the operator performs an operation to interrupt the work.

As described above, the present invention provides a bundler, a needle, and a guide plate at the lower part of the convergence part, and a knot part at the upper part, which protrudes above the guide plate when viewed from the length direction of the culm to be converged, and the bundler. Along the scraping direction,
A detection rod that extends at least from the starting end of the raking locus of the pack car to the vicinity of the rear door and that guides the culm is movably supported up and down, and turns ON when the detection rod moves downward.
Since the clogging detection switch that is The culm can be smoothly moved to the front of the door by guiding the culm that is scraped into the convergence part by the packer, and
The culm falls into or is scraped into the opening where the packer advances above the guide plate to perform a scraping action, or the needle advances upward to supply the knot to the knot. By suppressing this, it is possible to prevent the culm from getting entangled with the packer or needle, and from disturbing the focused posture of the culm.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
Fig. 1A is a side view of the rear part of the threshing device and the binding device mounted on the combine, B is a front view of the clogging detection switch mounting section, Fig. 2 is a perspective view of Fig. 1A, and Fig. 3
The figure is a control circuit diagram. 3... Binding device, 5... Focusing section, 6... Packer, 8... Nodal section, 9... Sweeper, 12...
...Door, 17...Detection rod, 19...Clogging detection switch, 21...Timer.

Claims (1)

[Scope of utility model registration request] A culm car, a needle, and a guide plate are provided at the lower part of the convergence part, and a knot part is provided at the upper part, and the culm protrudes above the guide plate when viewed from the length direction of the culm to be converged, and along the raking direction of the culm. A detection rod that extends from the starting point of the scraping trajectory to the vicinity of the rear door and guides the culm is movably supported up and down, and when the detection rod moves down, a clogging detection switch that turns ON is used as an actuator for an alarm, etc. A clogging detection device for a tying machine, characterized in that the device is inserted into a control circuit of the tying machine.