JPH0331145Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clogging alarm device for a binding machine that accurately and quickly detects clogging in the converging section of the binding machine and issues an alarm.

If the detector of the clogging alarm device in conventional binding machines is installed in the convergence chamber, it will be difficult to distinguish between a normal convergence state and a clogged condition, and there is a risk of false detection, so it is installed in the culm passage leading to the convergence chamber. Ta.

Therefore, the detection of a clogged culm is delayed, and by the time an alarm is issued, abnormal clogging has already occurred in the convergence chamber and culm passage. The task of removing it was extremely difficult.

Also, since the sensor was installed inside the culm passage,
The sensing member protrudes into the culm passage, and since the culm becomes entangled with the sensing member, erroneous detection may occur, making it impossible to issue an accurate alarm.

The purpose of this invention is to improve the above-mentioned drawbacks, and the present invention is equipped with a pucker for scraping the grain culm and a needle for supplying the binding string on the side of the collection chamber, which are rotated by the sensing operation of the door. In a binding machine configured to drive a needle and a knot through an intermittent rotation shaft, a detector outputs a detection signal to the intermittent rotation shaft when the intermittent rotation shaft is rotated to a position other than a predetermined stop position. The intermittent rotating shaft is activated by inserting the detector and a time limit means that does not output the detection signal until a predetermined time period when the intermittent rotating shaft completes one rotation in a normal state into an alarm circuit. The invention is characterized in that when the apparatus is later stopped midway due to a load exceeding a certain level, the time limit means outputs the detection signal after the predetermined time from the activation, and the alarm device issues an alarm.

The embodiments shown in the drawings will be explained below.
Reference numeral 1 denotes a threshing device mounted on the base of a combine harvester, and a binding machine 3 is installed at the rear of the threshing device. , a needle 10 that is driven by a needle shaft 10a that rotates once when the clutch 9 is engaged once due to the detection operation of the door 4; The chain 1 in the chain case 12 is controlled by the timing shaft 11 connected to the needle shaft 10a.
3, it drives the nodule shaft 14, the nodule part which is driven by the nodule shaft 14 and is surrounded by the nodule guide 15 and consists of a bill 16 and a holder 17, and the bill 16 and holder 17. Discharge arm 1 interlocked with bevel gear 17a
A pair of raking wheels 19, 19 for raking the waste straw conveyed and discharged by the straw removing transport device 20 into the collection chamber 6 are pivotally supported at the front part thereof, and a pair of raking wheels 19, 19 for raking the waste straw conveyed and discharged by the straw removal conveying device 20 into the collection chamber 6 are supported on the front part. A bundle conveying device 21 is provided whose starting end faces the rear of the discharge arm 18 and whose rear end goes toward the cut field on the side, and this bundle conveying device 21 is connected to a conveying chain 21a.
and a clamping rail 21b, and the bundle conveying device 21 is
A guide rod 23 is hanging down toward the starting end.

As shown in FIG. 4, a cam 24 is attached to a portion of the joint shaft 14 that protrudes into the chain case 12, and the cam 24 is in contact with a portion of the chain case 12 that faces the cam 24. and
A detector 25 that turns off is installed, and as shown in FIG.
A comparator 29 is inserted for comparison with the reference pulse number.

In the above-mentioned bundling machine 3, the straw discharged from the straw conveying device 20 of the threshing device 1 is passed through the raking wheels 19, 1.
9, and the police car 8 picks it up into the focusing chamber 6.
the door 4, and the door 4
When this is detected, the one-turn clutch 9 is engaged, the needle shaft 10a and the timing shaft 11 are started, and the needle 10 wraps the binding cord around the bundled culm. 17a to drive the nodal part to make a nodule;
The discharge arm 18 discharges the bundle while cutting the knots.

The released bundle is transferred to the bundle conveying device 21, held and conveyed to the mown field on the side, and then discharged.

When the knotting section of the tying machine 3 operates, the needle 10 lifts the waste straw and the knotting guide 15
Push the straw into the knot through the narrow groove of Building 1.
When a large load is applied to the needle 10 or the knot due to the straw being wrapped around the clutch 6, that is, when the focusing chamber 6 and the supply path are clogged, the one-turn clutch 9
If the shear pin or torque limiter attached to the drive gear 31 that meshes with the gear 30 having an engaging protrusion is cut and the intermittent rotating binding shaft 14 stops midway, the cam 24 will stop in a state separated from the detector 25. , the detector 25 is turned on.

Normally, the detector 25 remains ON until the binding shaft 14 completes one rotation and stops, but during that time the oscillation circuit 27
emits a pulse signal, which is counted by the counter 28 and the number of pulses output is smaller than the reference setting value of the comparator 29, so the comparator 29 does not output.
Alarm 26 is not activated.

However, as described above, if the binding shaft 14 stops halfway after starting, the number of pulses emitted by the oscillation circuit 27 will be greater than the reference value set in the comparator 29, so the comparator 29 will output an alarm. vessel 26
is activated and issues an alarm.

At this time, the work is stopped, the binding clutch is disconnected, the straw clogged in the collecting chamber 6 is removed, and the work is resumed.

Further, in the above embodiment, the oscillation circuit 27, the counter 28, and the comparator 29 were inserted into the circuit of the alarm 26 as a time circuit, but as shown in FIG. Even if a timer 32 is inserted into the circuit of the alarm 26, which turns on electricity if the ON state is continued for a period longer than the time required for one revolution of the rotating shaft, the same result as in the above embodiment can be obtained.

Furthermore, since the detector 24 is provided inside the chain case 12 (or other transmission case), there is no chance of straw getting tangled, and accurate detection can always be performed.

In the drawing, 33 is an input shaft of the binding machine 3, and 32 is a drive shaft of the bundle conveying device 21.

As mentioned above, the present invention is equipped with a needle for supplying a packer for scraping the grain culm and a tying string on the side of the convergence chamber, and the needle and the nodule are driven through an intermittent rotating shaft that rotates in response to the sensing operation of the door. In the binding machine configured as above, the intermittent rotation shaft is provided with a detector that outputs a detection signal when the intermittent rotation shaft is rotated to a position other than a predetermined stop position, and the detector and the intermittent rotation A time limit means for not outputting the detection signal until a predetermined time period when the shaft completes one rotation in a normal state is inserted into the alarm circuit, and when the intermittent rotating shaft stops midway due to a load exceeding a certain level after being started, the time limit means Since the device is configured so that the alarm is emitted by outputting the detection signal after the predetermined time from the activation, the alarm will not be emitted while the tying machine is performing normal tying operations, and the alarm will not be harsh on the ears. Even though it is possible to work without any problems, when the focusing chamber is clogged and the intermittent rotation shaft stops mid-rotation due to a load above a certain level, the intermittent drive shaft starts and then After a predetermined period of time has elapsed, an alarm will be activated and an alarm will be issued before the grain culm clogs the supply route in front of the concentrator, allowing you to quickly notice the clog and take action before it becomes hard and widespread. The clogged grain culm can be easily and quickly removed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a plan view of the binding machine attached to the rear of the threshing machine, Figure 2 is a side view of the same as above, Figure 3 is an exploded sectional view of the transmission device of the binding machine, and Figure 4a is the chain case of the binding machine. A partially cutaway rear view, b is a sectional view taken along A-A in a of the same above, Fig. 5 is a circuit diagram of the alarm, and Fig. 6
The figure is another circuit diagram of the alarm. 3... Binding machine, 6... Focusing chamber, 9... One-turn clutch, 12... Chain case, 14... Nodule shaft, 24... Cam, 25... Detector, 26... Alarm, 27... ...Oscillation circuit, 29...Comparator, 30
……timer.

Claims (1)

[Scope of utility model registration request] In a binding machine, a bundler for scraping grain culms and a needle for supplying a binding string are provided on the side of a binding chamber, and the needle and the nodule are driven through an intermittent rotating shaft rotated by the sensing operation of a door. , a detector that outputs a detection signal when the intermittent rotation shaft is rotated to a position other than a predetermined stop position is provided opposite to the intermittent rotation shaft; A time limiter that does not output the detection signal until a predetermined time when the rotation ends is inserted into the alarm circuit, and when the intermittent rotating shaft stops midway due to a load exceeding a certain level after starting, the timer means outputs the detection signal for the predetermined time from the start. A clogging alarm device for a binding machine, characterized in that the alarm device is configured to issue an alarm by outputting the detection signal.