JP2537444Y2 - Safety devices in combine cabins - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine having a driving unit housed in a cab that can be moved up and down.

[0002]

2. Description of the Related Art Conventionally, a combine in which a threshing device, an operation unit, a grain tank, an engine, and the like are mounted on a machine base having a traveling device, and the operation unit is accommodated in a vertically movable cabin is already known. .

[0003]

Conventionally, in a combine in which the cabin can be moved up and down, the cabin is immediately moved up and down by operating a lift switch. Therefore, when the cabin is raised, other workers need to perform maintenance work in the vicinity. While going or raising it, when servicing equipment such as a transmission case or engine below the cabin,
It was extremely dangerous as the cabin was raised or lowered unexpectedly.

[0004]

SUMMARY OF THE INVENTION The present invention combines a threshing device, an operation unit, a grain tank, an engine, and the like on a machine having a traveling device, and accommodates the operation unit in a vertically movable cabin. In the control circuit of the driving device for raising and lowering the cabin, inserting a raising and lowering switch of the cabin and operating the raising and lowering switch to the raising position or the lowering position, after a lapse of a certain time after the alarm starts to operate, the driving device The above-mentioned problem has been solved by a configuration that operates.

[0005]

When a lift switch is turned on to raise or lower the cabin, an alarm is activated to issue an alarm, and the cabin is raised or lowered after a predetermined time has elapsed. Therefore, when other workers are servicing the equipment around the cabin, or the engine, transmission case, etc. disposed below the cabin, it is possible to know in advance that the cabin will start to move up and down. Can be prevented from occurring.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. A self-removal type threshing device is mounted on one side of a machine base 2 having a traveling device 1, and an operation unit 3 and a grain Grain tank 4
And an engine E, and a grain culm holding / conveying device composed of a feed chain and a pinching rail is provided along the handle of the threshing device, and a cutting blade, a weeding body 5. ,
It is composed of a reaping device 6 composed of a cereal stem raising body 5a, a raking wheel, and a stalk raking band, and a spike-side transporter and a stock-holding transporter, which are driven around an upper rear axis. There is provided a pretreatment device including a cereal culm transfer device that adjusts the handling depth by tilting up and down by a lift cylinder that is a device.

At the rear of the cabin 7 housing the operating section 3, a pair of right and left columns 8,
8 and guide rollers 11 supported by two pairs of upper and lower brackets 10 projecting from the back of the cabin 7.
Are fitted in the grooves of the columns 8, 8 so that they can be raised and lowered. A hydraulic cylinder 12 for lifting is mounted on the machine base 2 between the right and left columns 8, 8, and the upper end of the piston rod 13 is attached to the cabin. 7 is connected to a mounting bracket 15 screwed to the rear surface.

A lift switch 16 is mounted on the operation panel of the operation unit 3, and an alarm device 17 composed of a horn is mounted on the lower part of the outside of the cabin 7. An operation signal of the elevating switch 16 is input to the microcomputer 18 for controlling the number and other various devices, and when the ascending side or the descending side is turned ON, as shown in FIG. When the delay time t elapses, the ascending solenoid 20a or the descending solenoid 20b of the solenoid valve inserted into the hydraulic circuit of the hydraulic cylinder 12 is turned on to turn on the cabin. Since 7 starts ascending and descending, other workers can evacuate during that time or call the driver's attention.

Further, as shown in FIG. 4 to FIG. 6, the upper surface of the square tube 2a constituting the machine base 2 is cut out and a horizontal hole 2b is formed. During the operation, the square tube 2a is inserted into the square tube 2a. Stand 2
5 is pulled out and stopped by the pins 22 (which are also used while the stand 21 is being stored), and the lower surface of the cabin 7 which is raised further improves safety.

FIG. 7 shows another safety device.
The ultrasonic transmitter 23 is attached to the lower surface of the cabin 7 and
When an operator or other object is interposed below the cabin 7 raised with the ultrasonic receiver 25 mounted thereon, the alarm 17 is activated even if the lifting switch 16 is lowered, but the lowering solenoid is operated. 20b is never turned on, so the cabin 7 does not descend. This state can be released by the release switch 26.

FIG. 8 shows a case where an auxiliary ladder 27 is mounted so that the passenger can easily get on and off when the cabin 7 is lifted. A butterfly 28 is attached to a tread plate 28 having the upper part of the auxiliary ladder 27 fixed to the lower outer surface of the cabin 7. When the cabin 7 is lowered, the auxiliary ladder 27 is folded down on the lower surface of the cabin 7 and stored and stopped by the pin 22 when the cabin 7 is lowered. , The auxiliary step 30 is fixed, and this auxiliary step 30 can be used even when the cabin 7 is lowered.

When the cabin 7 is raised and lowered, it is desirable that the operating means be raised and lowered together with the cabin 7. In this case, for example, in a threshing clutch operating device shown in FIG. 9, a threshing input pulley 31 and an engine output shaft 32 are used. When a belt tension clutch 33 interposed between a counter pulley 32 driven through a counter case and an interlocking connection with a threshing clutch lever 36 via an operation wire 35, the support 8 is tapered in a side view. When the operation wire 35 is stored in the cover case 37 and the cabin 7 is moved up and down, the operation wire 35 is not damaged.

FIGS. 11 and 12 show the hydraulic cylinder 12.
Is a jack for manually raising and lowering the cabin 7 when a hydraulic system or an electric system for controlling the hydraulic system has failed. This jack is interposed between the bottom plate of the cabin 7 and the machine base 2. When the handle 39 of the screw 38 on which the left and right threads are engraved is turned, the screw bosses engaged with the screw 38 advance and retreat in the opposite direction, and are connected to them, and the intermediate portion is pivotally connected with a pin. The angle of the pair of arms 40, 40 is expanded and contracted, and the cabin 7 moves up and down. At this time, the manual valve 41 is opened to remove the negative pressure of the hydraulic cylinder 12.
Reference numeral 42 denotes a manual oil tank, and reference numeral 20 denotes an electromagnetic valve for operating the hydraulic cylinder 12 up and down.

FIG. 13 shows an example in which the auxiliary speed change operation device and the lowering of the cabin 7 are linked with each other.
Is operated by operating along a guide groove having one end at an L (low speed) position, the other end at an M (medium speed) position, and an intermediate position at an H (high speed) position. 4
3 is ON when the sub-transmission lever 45 is shifted to the H position.
, Whereby the electromagnetic valve 2 is connected via a microcomputer.
0 is energized to the descending solenoid 20b, the hydraulic cylinder 12 is contracted, and the cabin 7 is automatically lowered. Therefore, when traveling at high speed, the cabin 7 can be lowered by the sub-transmission operation without performing two operations of the transmission and the cabin lowering operation, and the high speed traveling with the cabin 7 raised is prevented. be able to.

FIG. 14 shows another means for countermeasures when the hydraulic system of the hydraulic cylinder 12 or the electric system for controlling the hydraulic system or the like fails. An electric cylinder 46 is connected to the hydraulic cylinder 12 and connected thereto. A manual changeover switch 47 is interposed in the circuit, and when the above-mentioned manual changeover switch is operated when the hydraulic system breaks down, the motor of the electric cylinder 46 operates and the cabin 7 moves up and down.

[0016]

[Effect of the Invention] The present invention mounts a threshing device, an operation unit, a grain tank and an engine on a machine base having a traveling device,
In a combiner in which the operating unit is accommodated in a cab that can be raised and lowered, a cab lift switch is inserted into a control circuit of a drive device that raises and lowers the cabin, and when the lift switch is operated to a raised position or a lowered position, an alarm device is activated. Since the drive device is configured to operate after a certain time has elapsed since the start of operation, even when other workers are performing work such as maintenance and inspection around or below the cabin when raising and lowering the cabin. First, an alarm is issued, and after a certain period of time, the cabin 7 is moved up and down. Other workers can evacuate or alert the driver by the alarm, thereby improving safety. can do.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a cabin control circuit diagram.

FIG. 3 is a view showing operation patterns of a cabin and an alarm device.

FIG. 4 is a perspective view of a stand stored state.

FIG. 5 is a perspective view of the same working state.

FIG. 6 is a side view of a combine using a stand.

FIG. 7 is a side view of a combine using an ultrasonic sensor in a cabin.

FIG. 8 is a perspective view of a cabin equipped with a ladder for getting on and off.

FIG. 9 is a side view of the operating tool protection device.

FIG. 10 is a perspective view of the same.

FIG. 11 is a rear view of the cabin manual lifting device.

FIG. 12 is a side view of the same.

FIG. 13 is a plan view of a sub-transmission unit.

FIG. 14 is a wiring diagram of an example in which an electric cylinder is added to a hydraulic cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling device 2 Machine stand 3 Operation part 7 Cabin 8 Prop 12 Hydraulic cylinder 16 Elevating switch 17 Alarm

Claims (1)

(57) [Scope of request for utility model registration] 1. A combine in which a threshing device, an operation unit 3, a grain tank, an engine and the like are mounted on a machine base 2 having a traveling device 1, and the operation unit 3 is accommodated in a cabin 7 which can be raised and lowered. The lift switch 16 of the cabin 7 is inserted into a control circuit of a driving device that raises and lowers the cabin 7,
A safety device for a combine cabin, wherein the drive device is activated after a predetermined time has elapsed since the alarm device 17 started to operate when the elevation switch 16 was operated to the elevation position or the depression position.