JPS6112757Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a dust feeding adjustment device for a combine threshing section, etc. The opening/closing part of the dust feeding valve mechanism that adjusts the dust feeding speed in the threshing section threshing chamber is controlled by the rotation speed of the threshing barrel shaft. It is connected to an electromagnetic actuating mechanism that is linked to an alarm mechanism that detects the drop and operates, so that the dust feeding speed can be automatically accelerated by operating the dust feeding valve in the opening direction at the same time as the alarm mechanism is activated. In addition to reducing power loss in the threshing section at all times and allowing work to be carried out without any problems with good threshing accuracy, the dust sending valve mechanism can be moved to any desired opening and position and is operated electromagnetically at each position. The dust feeding valve mechanism is automatically adjusted by a mechanism to expand the applicable range of automatic adjustment, and the dust feeding valve mechanism can also be manually operated if necessary.

Hereinafter, the present invention will be explained in detail with reference to specific examples shown in the drawings.

Reference numeral 1 denotes a threshing section, which is installed on a traveling frame having a traveling device, and includes a stem culm reaping and conveying section 2, a control device 3, an engine 4, a waste straw processing device 5, and a grain culm cutting and transporting section 2, which are arranged as required on the traveling frame. Together with the grain collecting section 6 and the like, it constitutes a combine harvester.

In the threshing chamber 7 of the threshing section 1, a threshing drum 9 is rotatably supported by a threshing drum shaft 8, and the threshing drum shaft 8 is interlocked and connected to the engine 4 via a transmission mechanism 10 to generate power. Allow continuous operation.

The plowing cylinder shaft 8 is configured so that a group of plowing teeth 11 installed on the outer periphery of the plowing cylinder 9, which rotates integrally, can be rotated at a required rotational speed to operate at a predetermined circumferential speed. is associated with an alarm mechanism 12 having a circuit that operates to issue an alarm when the number of rotations thereof falls below the predetermined rotation speed, and this alarm mechanism 12 can be implemented in an existing device using a known structure. Illustrations of detailed configurations are often omitted.

In addition, a dust feeding valve mechanism 13 is installed at an appropriate location in the combustion chamber 7.
However, in the embodiment, the dust feeding valve body 14 of the mechanism 13 is positioned and installed in the space formed by the milling drum 9 and the lid 15 at the top of the milling chamber.

The dust-feeding valve bodies 14, 14 of the embodiment are swingably attached to fulcrum shafts 17, 17, which are supported by a fixed frame 16 on the lid body side and extend in a direction perpendicular to the axis of the wood-burning barrel, and each rear end portion is They are connected by a connecting member 18, and the connecting member 18 is connected to an operating lever 21 of an opening/closing operating section 20 supported by a rotation fulcrum shaft 19.

An adjustment lever 22 is attached to the outer protrusion of the lid 15 of the rotation fulcrum shaft 19, and by swinging this adjustment lever in the direction of the arrow A or B, the dust sending valve bodies 14, 14 are swung. The adjusting lever 22 is configured to be able to be adjusted dynamically, and its adjusted position is held by engagement with a locking device 23 fixedly installed on the lid body 15, and the adjusting lever 22 is moved to an appropriate position when necessary. Connector 24 that can be freely engaged and detached from
Attach the electromagnetic actuating mechanism 25 with this connector.
It can be connected to the actuating body 26 in a variable connection position a.

In the embodiment, the electromagnetic actuating mechanism 25 is formed of a piston of a hydraulic actuating device 27 as an actuating body and a solenoid valve 28 for controlling the hydraulic actuating mechanism. By connecting the circuits 29, 29 to the activation circuit of the alarm mechanism 12 described above, the alarm mechanism 12
When operating to issue an alarm due to the rotational speed of the mill shaft falling below the required number, the operating body 26 is operated in the direction of arrow C, and the dust feeding valve bodies 14, 14 are moved in the opening direction (as shown in Fig. 2). When the alarm is not issued, that is, when the rotation of the saw barrel shaft returns to normal, the dust feeding valve bodies 14, 14 are returned to the predetermined positions. .

Although the electromagnetic actuation mechanism 25 is not shown,
Instead of the hydraulic system, an appropriate mechanical boosting mechanism or an electric structure may be used, or a member operated by the excitation of a solenoid may be directly connected to the adjustment lever 22. The purpose can be achieved even with these configurations, and these configurations naturally fall within the scope of the present invention.

Next, to explain the operation of the device of the present invention, the stalk culms that are raised by the stalk culm reaping conveyance section 2 and are being harvested and conveyed are sequentially laid down on their side, and the threshing chamber 7 of the threshing section 1
After being subjected to the threshing action by the milling cylinder 9 in the chamber, the waste straw is transferred to the waste straw processing device 5 and processed.

When this threshing action is carried out, the adjustment lever 22
without connecting the connector 24 and the actuating body 26,
If the adjustment lever 22 is held at an appropriate position on the locking device 23, the dust feeding valve bodies 14, 14 connected thereto will be held at the required opening/closing angle position, and the dust generated in the threshing chamber during threshing will be removed. , the dust is sent in the dust removal direction at a speed set by the angle of the dust sending valve body.

As long as the dust is being fed well and the rotation of the threshing barrel shaft is as specified, the alarm mechanism 12 installed in conjunction with the threshing shaft to detect and operate the threshing shaft rotation speed will not operate. The action continues as is.

During this work, the amount of stem culms supplied into the wood cutting chamber 7 may increase, the wood may become too deep, or a large amount of dust may accumulate due to changes in the humidity of the stem culm itself. When the load caused by these becomes large and the rotation of the plowing barrel shaft 8 falls below a predetermined rotation speed, the circuit of the alarm mechanism 12 described above detects this rotation speed and operates to issue an alarm. By this alarm, the operator can manually move the adjustment lever 22 in the direction of arrow A to adjust it to any position for prompt dust feeding, and this adjustment allows the rotation of the plowing cylinder axis to be set at a predetermined level. When the alarm mechanism 12 returns to , the operation of the alarm mechanism 12 stops.

Next, to explain the case where the dust feeding valve body 14 is automatically adjusted, the connecting tool 2 of the adjustment lever 22
4 is connected to the appropriate connection position a of the actuating body 26 of the electromagnetic actuating mechanism 25, the dust feeding valve mechanism 13 and the electromagnetic actuating mechanism 25 are brought into an interlocked state.

Therefore, as in the case of manual operation described above, when the number of revolutions of the plow barrel shaft 8 falls below a predetermined number of revolutions and the alarm mechanism 12 is activated, the circuit 29 connected to this alarm mechanism circuit Since the solenoid valve is energized and pulls the actuating body 26 in the direction of arrow C, the adjustment lever 22 connected thereto is actuated as shown by arrow A, causing the connected dust feeding valve bodies 14, 14 to swing in the opening direction. The purpose is to quickly remove dust, and when the amount of dust in the combustion chamber 7 becomes appropriate, the combustion chamber shaft 8
When the rotation returns to normal, the alarm mechanism 12 stops operating, and the operating body 26 returns to its original position by de-energizing the solenoid or by energizing the solenoid in the return direction.

Then, by arbitrarily selecting the connecting position a between the actuating body 26 and the adjustment lever 22 and performing an operation to communicate with the connecting tool 24, the swing angle automatically actuated by the actuating body 26 can be arbitrarily changed. It can be done.

As explained above, the present invention connects the circuit 29 that activates the electromagnetic actuating mechanism 25 to the circuit of the alarm mechanism 12 that detects and activates the rotation speed of the plow barrel shaft 8, and sends a signal to the electromagnetic actuating mechanism 25. Dust valve mechanism 13
The opening/closing operation part 20 is connected so that when the rotational speed of the mill shaft 8 falls below the required rotation, the alarm mechanism 12 is activated and the dust feeding valve mechanism 13 is activated in the opening direction. The dust sending valve adjustment device comprises a dust feeding valve adjustment device, in which the dust feeding valve mechanism is provided so that the opening degree can be adjusted independently by a manual adjustment lever, and the manual adjustment lever is adjusted to an arbitrary angle by the manual adjustment lever. By connecting to the actuating body of the electromagnetic actuating mechanism, it is possible to automatically adjust the opening, so dust feeding is automatically adjusted to reduce power loss in the threshing section and improve threshing accuracy. Able to work in a stable condition.

In addition, since the dust valve mechanism is automatically adjusted using the circuit that activates the alarm mechanism, there is no need to provide a special sensing section for opening and closing the dust valve.Furthermore, since the alarm mechanism operates simultaneously, the dust valve mechanism can be adjusted automatically. Even if there is another cause of overload that cannot be solved by opening/closing, it is convenient to be able to know this and take immediate action to deal with it. In particular, since the manual adjustment lever of the dust-feeding valve mechanism is connected to the actuating body of the electromagnetic actuation mechanism in a variable connection position, the dust-feeding valve mechanism can be changed and held at the required opening position, and the lever can be adjusted to each adjustment position. can be connected to the actuating body of the electromagnetic actuating mechanism to automatically adjust the opening degree, making it possible to automatically adjust over a wide range while reducing the operating stroke of the actuating body, simplifying the device, and If necessary, the adjustment lever and actuating body can be released and used in a manual adjustment state.

[Brief explanation of the drawing]

The drawings show specific examples of the present invention, and Figure 1 is an overall plan view of a combine harvester implementing the present invention device;
FIG. 2 is an enlarged plan view of the main part thereof, and FIG. 3 is a longitudinal sectional view of FIG. 2. 1... Threshing section, 7... Threshing chamber, 8... Threshing trunk shaft, 9... Threshing trunk, 12... Alarm mechanism, 13...
Dust feeding valve mechanism, 14... Dust feeding valve body, 20... Opening/closing operation section, 22... Adjustment lever, 24... Connector, 2
5... Electromagnetic actuation mechanism, 26... Actuation body, 28...
Solenoid valve, 29...circuit.

Claims (1)

[Scope of utility model registration request] A circuit for activating an electromagnetic actuating mechanism is connected to a circuit of an alarm mechanism that detects and activates the rotation speed of the plowing drum shaft, and the opening/closing part of the electromagnetic actuation mechanism is connected, so that the rotation speed of the plow cylinder shaft is adjusted. The dust feeding valve adjustment device is configured to automatically operate a dust feeding valve mechanism in the opening direction along with activation of an alarm mechanism when the rotation speed decreases below a required speed, and the dust feeding valve mechanism is configured to be able to automatically operate the dust feeding valve mechanism in the opening direction. It is provided so that the opening can be adjusted independently with a lever, and when the manual adjustment lever is adjusted to the desired opening, the manual adjustment lever is connected to the operating body of the electromagnetic actuating mechanism to enable automatic opening adjustment. A dust feed adjustment device for a threshing section of a combine harvester.