JPH04237426A - Device for pretreatment of reaping in combine - Google Patents

Abstract

PURPOSE:To improve workability in feeding grain culm reaped by hand to a device for pretreatment of reaping in a combine. CONSTITUTION:A device 10 for pretreatment of reaping, having a platform 13 longer in the left and right, equipped with an auger 14, a reaping blade 17 and a raking reel 16 is installed in such a way that a power transmission shaft 27 from an engine is extended left and right at the side of the back of the platform 13. A reaping blade transmission system and a raking reel transmission system transmitting power from the downstream side, transmitting power from the power transmission shaft 27 to the auger 14, to the reaping blade 17 and the reaping reel 16 is arranged at the outside of the left and the right of the platform. Connection and disconnection of power of each transmission system is separately carried out by equipping the reaping transmission system with a clutch 48 to connect and disconnect power transmission or by providing the reaping blade transmission system and the raking reel transmission system to individually connect and disconnect power transmission.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to rice, wheat, soybeans, buckwheat,
The present invention relates to the structure of a reaping pretreatment device in a so-called general-purpose (ordinary type) combine harvester that is capable of reaping and threshing grains such as the following.

0002

[Prior Art] As a power transmission system for a reaping pretreatment device in this type of combine harvester, a prior art Japanese Patent Laid-Open No.
Japanese Patent Application No. 256313 proposes providing a clutch downstream of a power transmission shaft that transmits power from the engine to the auger to simultaneously turn on and off power transmission to both the cutting blade and the raking reel. With this configuration, for example, when introducing a combine harvester into a field,
When hand-harvesting grain culms from headlands in advance and feeding them into the platform in the pre-harvesting treatment device, the cutting blades and raking reel are stopped, so the safety of the worker feeding the harvested grain culms is ensured. It is said that it can be secured.

0003

[Problem to be Solved by the Invention] However, when the combine harvester is placed on the headland after the harvesting, and the platform of the reaping pretreatment device is placed on the ground, the (hand-harvested) harvested grain culm is placed on the platform. Even when loading, if the scraping reel located at the front of the platform is stopped, the tall scraping reel will get in the way, so loading must be done from the side of the platform. However, there was a problem that the loading workability was poor. Further, the clutch operation lever in the prior art is:
Since it is located approximately midway on a platform that is long from side to side, there is also the problem that it is difficult to engage and disengage the clutch. The present invention aims to solve these technical problems.

0004

[Means for Solving the Problems] In order to achieve this object, the present application includes a left and right longitudinal platform equipped with an auger at the front part of a traveling vehicle body equipped with an engine and a threshing section,
In a combine equipped with a reaping pretreatment device having a cutting blade and a raking reel, a power transmission shaft from the engine to the reaping pretreatment device is arranged to extend left and right on the rear side of the platform. , a cutting blade transmission system and a raking reel transmission system that transmit power from the power transmission shaft to the auger, and transmit power from the downstream side thereof to the cutting blade and the raking reel, respectively, on the outer surface of the right or left side of the platform. A clutch is disposed on the side and connects and disconnects power transmission to the cutting blade transmission system, or separate clutches are provided to connect and disconnect power transmission to the cutting blade transmission system and the rake reel transmission system, respectively. Further, a configuration is adopted in which a clutch operating section for connecting and disconnecting power transmission to the cutting blade transmission system and/or the rake reel transmission system is provided on the outer surface side of the right or left side of the platform. be.

[0005]

As described above, if the cutting blade transmission system is provided with at least a clutch for connecting and disconnecting power transmission on the downstream side of the auger on the power transmission shaft from the engine to the reaping pretreatment device, the auger Since the culm and the raking reel can be rotationally driven, the task of feeding hand-cut grain culms into the reaping pre-treatment device becomes extremely simple. Further, when driving the auger, both the cutting blade and the scraping reel can be stopped, which increases the number of types of work that can be done. Furthermore, since the clutch operating section is provided on the outer surface of the right or left side of the platform, the worker does not have to approach the rotating parts when operating the clutch, which improves work safety. It is played.

[0006]

[Example] Next, an example of the present invention will be explained.
Reference numeral 1 indicates a running vehicle body of a general-purpose combine harvester that may have a pair of left and right running crawlers 2, 2, and a threshing device 3 is mounted on one side of the traveling vehicle body 1. The handling barrel 4 is arranged so that its axis line is along the traveling direction of the traveling vehicle body 1, and below it is provided with a swinging sorting device 5 using a receiving net, a sheave, etc., and a wind sorting device using the wind of a Karasaki fan 6, The side of the threshing device 3 (in Fig. 1, the traveling vehicle body 1
A grain tank 7 for storing threshed grains is mounted on the right side of the tank. Reference numeral 8 is a second lifting cylinder for returning the processed material from the second conveyor into the handling chamber, and reference numeral 9 is a discharge cylinder for discharging grain from the grain tank 7 to the outside.

The reaping pretreatment device 10 includes a rectangular cylindrical feeder house 12 (with a chain conveyor 12a inside) that opens at the front of the threshing device 3 and can be raised and lowered by a hydraulic cylinder 11; A horizontally long bucket-shaped platform 13 connected to the front end, a horizontally long auger 14 installed horizontally within the platform 13, a scraping reel 16 with a tine bar 15 at the upper front position of the platform 13, and a horizontally long bucket-shaped platform 13 installed on the lower surface of the platform 13 in the left and right longitudinal direction. It consists of a clipper-shaped cutting blade 17 arranged therein. Reference numerals 18 and 18 indicate a pair of left and right weeding bodies protruding forward from both left and right ends of the front portion of the pre-reaping treatment device 10 . FIG. 3 is a power transmission system diagram schematically showing the power transmission system from the engine 19 to each of the above-mentioned parts. etc. to transmit power. Power is transmitted to the transmission 21 of the traveling section via a hydraulic pump 22 and a hydraulic motor 23, and the pair of traveling crawlers 2
, 2 drive wheels 24, 24 independently of each other.

Power transmission to the reaping pretreatment device 10 is as follows:
The chain conveyor 12a in the feeder house 12 is driven downstream of the reaping pre-processing unit clutch device 25, and the reaped grain culm from the platform 13 is conveyed to the front part of the threshing device 3 by its scraping plate 12b. On the other hand, a left and right longitudinal power transmission shaft 27 disposed on the rear surface of the platform 13 is driven via the chain 26, and at a point where the power transmission shaft 27 protrudes to the rear of the right side surface of the platform 13, a chain sprocket 28, 29 is driven. The auger 14 is rotationally driven via the chain 30 wound around it. A cutting blade transmission system 31 for the cutting blade 17 and a scraping reel transmission system 3 for the scraping reel 16
2 is disposed downstream of the power transmission to the auger 14 on the power transmission shaft 27, and is disposed on the right outer surface side of the platform 13. The first embodiment is shown in FIGS. 3 to 6, and the scraping reel transmission system 32 is
A drive sprocket 33 attached to the right end of the power transmission shaft 27 and an intermediate shaft 3 pivotally supported on the upper side of the platform 13.
Chain 3 wrapped around chain sprocket 35 attached to chain 4
6, and a chain sprocket 37 on the intermediate shaft 34.
and a chain sprocket 39 attached to the input shaft 38 of the scraping reel 16, and a chain 40 wound around the chain sprocket 39. code 4
1 and 42 are intermediate sprockets.

The mower blade transmission system 31 is wound around a mower drive case input pulley 44 attached to the outer surface of the right side plate 13a of the platform 13 from a drive pulley 43 attached to the right end of the power transmission shaft 27 as described above. It is a transmission system using a belt 45, which connects the drive arm 4 from the transmission part inside the cutting blade drive case 46.
The cutting blade 17 is reciprocated from side to side via 7. The code 48 is
A cutting blade clutch device associated with the belt 45, as shown in FIG.
As shown in FIG. 6, a handle 4 protrudes rearward from a boss portion 49a loosely fitted to the right end portion of the power transmission shaft 27.
9, the belt 4 is attached to the tip of a rotating arm 50 that is loosely fitted to the right end of the power transmission shaft 27 and protrudes forward.
A connecting bolt 53 is attached to an arm 52 that projects forward from the front end of the handle 49, and a support member 54 that is rotatably attached to the rotating arm 50. The connecting bolt 53 is slidably passed through the connecting bolt 53.
The trochanter 51 is urged against the belt 45 by a spring 55 fitted therein. The handle 49 is movable along the upper and lower elongated holes 57 in the guide plate 56 attached to the outer surface of the right side plate 13a of the platform 13, and has engagement holes cut out in the horizontal direction at the upper and lower ends of the upper and lower elongated holes 57. Stop groove (
The boss portion 49a and the handle 49 are configured to be freely rotatable around the pin shaft 58 so as to be able to be engaged with and detached from the handle (not shown). Further, the rotating arm 50 to which the trochanter 51 is attached has a regulating rod 59 facing on the opposite side of the belt 45 with which the trochanter 51 comes into contact.
to fix.

With these configurations, when the handle 49 is rotated in the direction A in FIG. Since the movable arm 50 is pressed downward and the outer periphery of the belt 45 is pushed by the trochanter 51, the cutting blade drive case input pulley 4
Power can be transmitted to 4. On the contrary, turn the handle 49 downwards (B
direction) and is locked in the locking groove on the lower end side, the arm 52 forces the rotating arm 50 to rotate upward, and the pressing force for power transmission by the spring 55 is released. At the same time, the inner peripheral surface of the belt 45 is pressed upward by the regulating rod 59, or the belt 45 is bent between it and the trochanter 51, so that the belt 45 can be forcibly stopped (see FIG. (See the two-dot chain line in 6). Therefore, when the combine harvester is driven into the headland, the grain culms on the headland are first harvested by hand, and then the combine harvester is placed so that the lower surface of the reaping pretreatment device 10 is brought into contact with the headland. Then, by rotating the handle 49 downward, the mower blade clutch device 4
8, the engine 19 is started, and the threshing clutch device 20 and the reaping pre-processing clutch device 2 are turned off.
5 are turned on, the auger 14 and the scraping reel 16 rotate. In this state, the hand-harvested grain culm is
When the material is thrown in the direction of the raking reel 16, the raking action of the raking reel 16 makes it possible to perform the throwing operation very easily. Also, the handle 49 is on the platform 13.
Since the handle 49 is located on the right side of the vehicle and in front of the driver's seat 67, it is easy to operate the handle 49. Note that the reference numeral 60 is a cover body for the cutting blade transmission system 31 and the like.

FIG. 7 shows a second embodiment, in which the cutting blade transmission system 31 and the scraping reel transmission system 32 are provided with individual clutches for connecting and disconnecting power transmission, respectively.
The cutting blade transmission system 31 uses a belt 45 transmission as in the first embodiment, employs the cutting blade clutch device 48 of FIGS. 5 and 6, and uses the power transmission shaft 27 of the first embodiment in the rake reel transmission system. Instead of a drive sprocket 33 attached to the right end of the platform 13 and a chain 36 wound around a chain sprocket 35 attached to an intermediate shaft 34 pivotally supported on the upper side of the platform 13, a transmission system using pulleys 64, 65 and a belt 66 is used. As shown by the dashed line in FIG. 4, the belt holding trochanter 61
and a handle 62 that rotates the handle 62 constitutes a scraping reel clutch device 63. It is preferable that this handle 62 is also configured to rotate in the same direction near the inner side of the handle 49 of the cutting blade clutch device 48 (on the right outer surface side of the platform 13). Further, the base of the handle 62 is rotatably supported on the side plate 13a of the platform 13, etc., and the handle 62 is inserted into a vertical slot (not shown) in the upwardly extending guide plate 56 in the same manner as the handle 49. It is sufficient to maintain the rotational position. In this embodiment, when the auger 14 is driven, a separate clutch device is used to control the cutting blade transmission system 3.
1 and the raking reel transmission system 32, the operator can stop not only the cutting blade transmission system 31 but also the raking reel transmission system 32 at his/her request, thereby ensuring safety. This will improve your sexual performance.

FIG. 8 shows a third embodiment, in which the cutting blade transmission system 31
As in the first embodiment, the belt 45 is used for transmission, and the cutting blade clutch device 48 shown in FIGS. 5 and 6 is used. The scraping reel transmission system is a transmission system using a belt 70 that is wound around left and right split pulleys 68, 69 from the power transmission shaft 27 of the first embodiment to the intermediate shaft 34, and the interval between one of the split pulleys 69 is adjusted. A step motor 71 for adjustment is provided to constitute a continuously variable transmission mechanism. Further, an electromagnetic clutch 72 is inserted between the intermediate shaft 34 and the chain sprocket 35, and is configured to connect and disconnect power transmission to the chain sprocket 35.
A sensor 73 is provided to detect the number of rotations of the scraping reel 16. As an embodiment of this sensor 73, watermark holes 75 are bored at an appropriate circumferential pitch on the outer periphery of a disc 74 that rotates integrally with the chain sprocket 35, and a light-transmitting type sensor is provided on both sides of the watermark hole 75. 73(
A magnetic field type proximity sensor 73 (consisting of a light emitting element and a light receiving element) or utilizing electromagnetic induction is attached to the bracket 77. Reference numerals 79a and 79b indicate vehicle speed sensors that are provided in association with the respective output shafts of the left and right traveling crawlers 2, 2 to detect the vehicle speed.

Reference numeral 78 is a control means for adjusting the rotation speed of the scraping reel 16 (for scraping reel synchronization control) in accordance with increases and decreases in the vehicle speed of the traveling machine. Electronically controlled central processing unit (
CPU), a read-only memory (ROM) that stores in advance the control programs and initial values necessary for arithmetic processing by the central processing unit, and a read-only memory (ROM) that temporarily stores various data used for arithmetic processing. read/write memory (
RAM), an input/output interface, etc., and inputs the signals of the vehicle speed sensors 79a, 79b and the sensor 73 that can detect the rotation speed of the scraping reel, as well as the signals of the automatic switch 80 and manual switch 81. A signal is output to the adjusting step motor 71 and electromagnetic clutch 72 of the step change mechanism. Note that it is preferable to determine the vehicle speed using the average value of the detection values of the left and right vehicle speed sensors 79a and 79b. In addition, when calculating the vehicle speed from the pulse signals (detected values) of the vehicle speed sensors 79a and 79b, when calculating the number of rotations (circumferential speed) of the scraping reel 16 from the pulse signals of the sensor 73, and when tuning to various vehicle speeds. The correspondence of the rotational speed of the scraping reel 16 is shown in each conversion table (
map) or list in read-only memory (RO
M).

Next, the mode of control will be explained according to the subroutine flowchart shown in FIG. Following the start, in step S1, the rotation speed (unit: rpm) of the scraping reel 16 is determined to be N1 (for example, 1
00 rpm) or less. Scraping reel 1
6 is less than N1 (no), the reaping pre-processing device 10 is assumed not to be driven (in other words, the reaping pre-processing clutch device 25 is in the disengaged state), and the rake reel synchronization automatic Do not exercise control. Scraping reel 1
When the detected rotational speed of No. 6 is equal to or higher than N1 (yes), it is determined that the pre-reaping processing device 10 is being driven, that is, it is executing the pre-reaping processing work. Next, in step S2, it is determined whether the automatic switch 80 is ON. ON
At this time, the above-mentioned automatic reel synchronization control is executed. In this case, the correspondence relationship between the rotational speed (target rotational speed NM) of the scraping reel 16 that should be synchronized with the vehicle speed V (m/sec) (Fig. 1
2), by changing the switch (automatic switch 80), if the target rotational speed NM of the scraping reel to be synchronized to the same vehicle speed is set to a large state (high synchronization), the target Three types are provided: one in which the rotational speed NM is tuned to a medium level (medium tuning) and one in which the target rotational speed NM is tuned to a low degree (low tuning). When it is determined in step S2 that the automatic switch 80 is ON, step S3
The scraping reel 16 should be synchronized with the vehicle speed V (m/sec) at
From the correspondence relationship between the rotational speed (target rotational speed NM) (shown in FIG. 12), there are three states: whether the detected rotational speed is within a predetermined dead band, above the dead band, or below the dead band. Determine whether it is either. Here, the dead band is
The adjusting step motor 71 is not driven when the detected rotational speed is within a certain range above and below the target rotational speed of the scraping reel that is to be synchronized with various vehicle speeds. Therefore, when the value of the detected rotational speed of the scraping reel is within this dead band, the continuously variable transmission mechanism is not driven to the speed increasing side or the decelerating side. Note that if the detected value of the vehicle speed sensor fluctuates within a certain range after the continuously variable transmission mechanism is temporarily stopped, the adjustment step motor 71 is not driven in order to prevent the continuously variable transmission mechanism from moving recklessly. However, when the degree of synchronization is changed using the automatic switch 80, it is natural that the adjustment step motor 71 is driven even if the vehicle speed does not change. Next, if the value of the detected rotational speed of the scraping reel is below this dead band, it is determined in step S4 whether or not the rotational speed of the scraping reel 16 is below the upper limit value N2 (for example, 852 rpm). , when the value is greater than the upper limit value N2, the adjustment step motor 71 is not driven. In step S4, when it is determined that the rotation speed of the scraping reel 16 is below the upper limit value N2,
Based on the correspondence between the vehicle speed V and the corresponding rake reel rotation speed (FIG. 12), the adjusting step motor 71 is driven to increase the rake reel rotation speed (step S5). If the value of the detected rotational speed of the scraping reel 16 is above this dead zone in step S3, the rotational speed of the scraping reel 16 is set to the lower limit value N3 (for example, 265
rpm) or more, and if it is smaller than the lower limit N3, the adjustment step motor 71 is not driven. If it is determined in step S6 that the number of rotations of the scraping reel 16 is equal to or higher than the lower limit value N3, the adjusting step motor 71 is driven to change the number of rotations of the scraping reel according to FIG. 12 (step S7). . in this way,
By detecting the rotation speed of the scraping reel 16 with the sensor 73, a limit switch for detecting the upper and lower limits of adjustment, which was provided in the continuously variable transmission mechanism or the step motor 71 for adjustment in the conventional technology, can be activated. This can be omitted, and the rotation speed of the scraping reel can be easily controlled in synchronization with the vehicle speed. Furthermore, in a continuously variable transmission mechanism that adjusts the amount of belt biting into the split pulleys, when the sensor 73 detects that the scraping reel 16 is not rotating, the adjustment step motor 71 is activated. Since the belt is not driven, accidents such as the belt forcibly biting into the split pulley or being twisted can be avoided. When the automatic switch 80 is OFF in step S2, the manual switch 81 determines whether the manual switch 81 is ON or OFF in step S8. It is used when manually increasing or decreasing the number of rotations based on situational judgments such as, etc. When turning on the manual switch 81 to the (increase) side, it is used to check whether the detected rotation speed N1 of the scraping reel 16 is below the upper limit value N2. is determined (step S9), and if it is less than the upper limit value N2, the adjustment step motor 71
is continuously driven to increase the number of rotations of the scraping reel 16 (step S10). When the manual switch 81 is turned on to the (reduction) side in step S8, it is determined whether the detected rotational speed N1 of the scraping reel 16 is equal to or higher than the lower limit value N3 (step S11), and it is determined whether the detected rotation speed N1 of the scraping reel 16 is equal to or higher than the lower limit value N3. Sometimes, the adjustment step motor 71 is driven continuously,
Decrease the rotation speed of the scraping reel 16 (step S1
2). The adjustment step motor 71 is not driven when the manual switch 81 is turned off in step S8, when the upper limit value N2 is greater than the upper limit value N2 in step S9, and when the lower limit value N3 is less than the lower limit value N3 in step S11.

The operating portion, handle, or switch of the clutch may be provided on the outer surface of the left side surface of the platform 13.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a combine harvester.

FIG. 2 is a side view.

FIG. 3 is a schematic diagram of a power transmission system.

FIG. 4 is an enlarged side view of a main part taken along line IV-IV in FIG. 1;

FIG. 5 is an enlarged view of essential parts taken along the line V-V in FIG. 4;

FIG. 6 is a side view taken along VI-VI in FIG. 5;

FIG. 7 is a schematic diagram of a power transmission system according to a second embodiment.

FIG. 8 is a schematic diagram of a power transmission system according to a third embodiment.

FIG. 9 is a plan view showing a sensor section of the scraping reel.

FIG. 10 is a side view.

FIG. 11 is a flowchart.

FIG. 12 is a diagram showing the relationship between vehicle speed and rake reel rotation speed.

[Explanation of symbols]

1　　　　Running vehicle body 2 Traveling crawler 3 Threshing device 10　　　　　　　　　Pre-reaping treatment device 13 Platform 14 Ogre 16 Scraping reel 17 Cutting blade 19 Engine 27 Power transmission shaft 31　　　　Mower blade transmission system 32 Kake reel transmission system 48 Mower blade clutch device 49 Handle

Claims (2)

[Claims] Claim 1: A left and right longitudinal platform equipped with an auger is provided at the front part of a traveling vehicle body equipped with an engine and a threshing section;
In a combine equipped with a reaping pretreatment device having a cutting blade and a raking reel, a power transmission shaft from the engine to the reaping pretreatment device is arranged to extend left and right on the rear side of the platform. , a cutting blade transmission system and a raking reel transmission system that transmit power from the power transmission shaft to the auger, and transmit power from the downstream side thereof to the cutting blade and the raking reel, respectively, on the outer surface of the right or left side of the platform. A clutch is disposed on the side and connects and disconnects power transmission to the cutting blade transmission system, or separate clutches are provided to connect and disconnect power transmission to the cutting blade transmission system and the rake reel transmission system, respectively. A reaping pretreatment device for a combine harvester, characterized in that: 2. A clutch operating portion for connecting and disconnecting power transmission to the cutting blade transmission system and/or the rake reel transmission system according to claim 1 is provided on the outer surface side of the right or left side of the platform. A reaping pretreatment device for a combine harvester, characterized by: