JP5262269B2 - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a constitution of a combine barvester in which double restraints act so as to permit depressing of a raking pedal as far as traveling is stopped and a series of apparatuses for reaping/transporting/threshing are kept in transmission, to prevent occurrence of maloperation outside a field, and to secure safety in traveling during reaping and threshing operation. <P>SOLUTION: The combine harvester includes a main gearshift lever (2) for operating a hydrostatic type continuously variable transmission (1), and a reaping/threshing clutch lever (4) for performing ON/OFF operation of a reaping/threshing clutch (3). Depressing operation of a raking pedal (6) for carrying out the depressing operation by the operator when grain culms on the side of a levee are raked and reaped can be carried out on condition that the main gearshift lever (2) is located in the neutral position, and the reaping/threshing clutch lever (4) is located in the ON position. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a combine.

  Conventionally, combine harvesters are harvested cereals that are in the middle of conveyance that are held by the harvesting and conveying device in the front part of the combine body at the end of the harvesting and threshing work, In order to cut and thresh the cereals in a state, a working mode is known in which the operation of cutting, conveying, and threshing is performed while driving and the cutting and conveying device and the threshing device are stopped.

  For example, a known combine disclosed in Japanese Patent No. 3848876 is disclosed in the specification and the accompanying drawings in the patent publication. A code | symbol shows the code | symbol used for this gazette.

  Left and right crawler travel device (4), travel HST (13) that drives the crawler travel device (4), and left and right steering clutch (16) that transmits power to the left and right crawler travel devices (4) A main shifting lever (10) for shifting operation, and a forcible stirrer for continuing the cereal conveyance by the preprocessing unit (2) while disengaging the left and right steering clutch (16) and stopping traveling In the combine equipped with the left and right steering clutch (16) are simultaneously disconnected and the forced scratching switch (9) is switched simultaneously, the main transmission lever (10) stops the rotation of the traveling HST (13). A combine is shown which is effective only when it is in a neutral position.

  Further, in this publication, the rotational drive detection sensor (21) for detecting the rotational drive state of the transmission is used for the switching operation of the forced take-in switch (9) that simultaneously disconnects and simultaneously connects the left and right steering clutches (16). There is disclosed a combine which is effective only when a rotation drive stop based on a rotation stop of the traveling HST (13) is detected.

In short, the published patent invention described above has the greatest object of improving the safety of the harvesting and threshing work associated with the vehicle running.
Japanese Patent No. 3848876

  As can be seen from the conventionally known combine described in the previous section (see Patent Document 1), the scraping operation performed while the combine is stopped is conventionally configured in consideration of the safety of the drive, and the main transmission lever is The forced take-in switch can be switched when in the neutral position and when the transmission is stopped from rotating due to the rotation stop of the traveling HST.

  Therefore, since the switching operation of the forced take-in switch in the conventional combine can be performed regardless of whether or not the cutting and conveying device and the threshing device are driven, the safety of the cutting and threshing operation accompanying the traveling of the machine body is improved. However, even if the forced clutch switch is turned on and the steering clutch is disengaged, the task cannot be performed immediately (when the cutting and conveying device or the threshing device is stopped), which reduces work efficiency. was there.

  Since the conventional device has a configuration in which the forced take-in switch can be switched regardless of the driving / stopping of the cutting and conveying device and the threshing device, there is a problem that a double safety check cannot be performed by stopping the cutting and threshing. there were.

  The invention of the present application to be described below can improve work efficiency while ensuring the safety of the traveling of the combine in the same manner as before in the scraping work performed at the end of the work. As will be described later, in the present invention, when the reaping clutch and the threshing clutch are in the continuous state, the rake pedal operation is enabled. Therefore, when the pedal operation is completed, the rake operation can be started immediately.

  And the invention of the present application switches the valve by electromagnetic actuation by depressing the brake pedal, and disengages the left and right side clutches.At that time, the relief valve on the oil passage is operated and closed to increase the pressure of the hydraulic oil. The hydraulic mechanism can reliably cut the left and right side clutches.

In order to solve the above-mentioned problems, the invention described in claim 1 includes a main transmission lever (2) for shifting the hydrostatic continuously variable transmission (1), and a mowing / threshing clutch (3). A cutting and threshing clutch lever (4) for turning on and off, and a scraping pedal (6) that can drive the cutting and conveying device (19) while the vehicle is stopped by a stepping operation. The main transmission lever (2) Only when the cutting and threshing clutch lever (4) is in the on position, the setting pedal (6) can be depressed and operated at the upper end. The provided pedal arm (6a) is pivotally mounted with the support shaft (7) as a rotation fulcrum (P) so that it can be stepped on, and is located away from the rotation fulcrum (P) on the side surface of the pedal arm (6a) The strike A par member (8) is provided so as to protrude outward, and a first checker (9) interlocking with the main transmission lever (2) and a cutting / threshing clutch lever (3) are provided in the rotation locus of the stopper member (8). ) was co Nbain which second restraining member and (10) arranged in conjunction with.

  In other words, the double safety device is activated, and it is possible to switch to the scraping operation only when the traveling is stopped and a series of operations such as cutting, conveying and threshing is possible. .

In addition, by this, the brake pedal ( 6 ) is checked by the two checkers ( 9, 10 ) interlocking with the second system and the like, and the work efficiency is maintained while improving the safety.
Next, the invention described in claim 2 is that, when the first restraining tool (9) and the second restraining tool (10) are released from being restrained, the scraping pedal (6) is accompanied by a stepping operation. The relief valve (12) on the oil passage (11) is operated to the closed side, and the left and right side clutches (13, 13) are simultaneously turned off by the hydraulic mechanism (14) that operates based on electromagnetic valve operation. It has a structure with the請 Motomeko 1 wherein Combine that.

That is, when the two checkers ( 9, 10 ) are released and the depression pedal ( 6 ) is depressed to disengage the left and right side clutches ( 13, 13 ) , the relief valve ( 12 on the oil passage ( 11 ) is released. ) Is closed and the pressure of the hydraulic oil sent to the hydraulic mechanism ( 14 ) side is increased so that the above-described cutting operation can be performed reliably.

Invention 請 Motomeko 1 wherein the main shift lever (2) is in the neutral position, the travel stops, besides, only if a set of devices, transport, threshing cutting is in transmission, take- Since the double check works so that the pedal ( 6 ) is allowed to be depressed, it is possible to prevent the occurrence of erroneous operations outside the field, as well as the safety associated with traveling during cutting and threshing. Can be secured.

When the depression pedal ( 6 ) is depressed to switch to the activation operation, the harvesting / conveying / threshing devices are in operation, so the cutting / conveying device ( 19 ) is driven while the vehicle is stopped at the edge. It is possible to quickly switch to a scraping operation for harvesting the culm at the time of dredging, and to increase the work efficiency.

Then , the depression pedal ( 6 ) is depressed by the first checker ( 9 ) and the second checker ( 10 ) interlocked with the two levers of the main transmission lever ( 2 ) and the mowing / threshing clutch lever ( 4 ). It is possible to improve work efficiency while improving safety. In addition, the configuration is relatively simple, and can be manufactured at low cost, and can be provided at low cost.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1, the check production by the first check tool ( 9 ) and the second check tool ( 10 ) is released, and the brake pedal when cutting operating the left and right depressed (6) of the side clutch (13, 13) by the hydraulic mechanism (14), the relief valve on the oil passage provided in the interlocking state (11) (12) is closed, Since the pressure of the hydraulic oil sent to the hydraulic mechanism ( 14 ) side is increased, the disengagement operation of both side clutches ( 13, 13 ) can be performed accurately.

Embodiments of the present invention will be specifically described below with reference to the drawings.
First, as shown in FIGS. 5 to 7, the combine 15 has a threshing device 18 mounted on the left side in the forward direction on a vehicle body 17 equipped with crawlers 16, 16, and a cutting and conveying device 19 in front thereof. Are configured to be freely connected up and down. And, as shown in the drawing, the Glen tank 20 is mounted adjacent to the right side of the threshing device 18, and the first grain that has been threshed and sorted by the threshing device 18 is conveyed and stored. . As shown in FIG. 5, the combine 15 according to the embodiment has a configuration in which a driver's seat 5 is disposed in front of the Glen tank 20.

Reference numeral 21 denotes a grain discharge auger.
Then, as shown in the drawing, the cutting and transporting device 19 supports the base portion on a cutting suspension base at the front portion of the vehicle body 17 so as to freely rotate up and down, and extends the tip portion from the intermediate portion toward the front lower portion. Each frame, which will be described later, is arranged on the frame 23 and connected and supported. In this case, the cutting frame 23 is provided with a plurality of cutting weeds 24 arranged at the front low position for each cutting grain row, and the inclined rice cake raising device 25 is provided by approaching behind it. It is set as the structure which arranged and attached the cutting device 26 facing the horizontal direction in the lower position below. As shown in the drawing, the harvesting and conveying device 19 is provided with a grain feeder 28 between the vicinity of the upper side of the harvesting device 26 and the start end of the feed chain 27 of the threshing device 18, and holds the harvested wheat straw. Then, it is configured to be conveyed and supplied to the threshing device 18.

  The transmission mechanism of the combine 15 uses rotational power output from the engine 30 mounted on the lower side of the driver's seat 5 as a threshing device 18 side and a hydrostatic continuously variable transmission (hereinafter referred to as “HST”). The power is branched to the first side and transmitted, and the rotational power via HST 1 is input to the traveling mission device 31. The cutting and conveying device 19 is configured to input the rotational power branched and output from the traveling mission device 31 through the cutting clutch 3a, although a specific transmission path is not shown. On the other hand, as described above, the threshing device 18 receives the rotational power branched from the engine 30 and is also configured to be transmitted via the threshing clutch 3b.

  In addition, since the cutting and conveying apparatus 19 is well known in the art, the transmission mechanism is not shown. However, when the traveling speed of the combine 15 is low, it is input from the threshing apparatus 18 and transmitted. In order to always be transmitted from the high-speed rotation side, a one-way clutch is interposed on the way.

  The mowing / threshing clutch 3 described in the claims refers to both the mowing clutch 3a and the threshing clutch 3b, and the mowing / threshing clutch lever 4 is the mowing clutch lever 4a and the threshing clutch lever. 4b.

  Then, as shown in FIG. 5, the combine 15 is an operation frame in which the operation devices of the respective devices are concentrated around the left side from the front side of the driver's seat 5, and the opening portion on the right side is the entrance / exit. Yes. On the operation frame, a main transmission lever 2 is provided at the front right end, and a cutting clutch lever 4a and a threshing clutch lever 4b are provided at the left rear position, respectively. The main transmission lever 2 is operably connected to the HST1. -Shifting operation is possible in conjunction with reverse switching, and the cutting clutch lever 4a and the threshing clutch lever 4b are connected so that the cutting clutch 3a and the threshing clutch 3b can be turned on and off, respectively. .

Next, regarding the hydraulic system of the combine 15, the related oil passages will be described based on the hydraulic circuit diagram shown in FIG.
The HST 1 is supplied with hydraulic oil from a tank 33 via a hydraulic pump 34, and based on the operation of the main transmission lever 2, forward / reverse switching (forward / reverse switching) and increase / decrease speed adjustment. Is configured to be stepless. Next, the pair of left and right electromagnetic valves 35, 35 are electromagnetically switched by an operation of a side clutch changeover switch 36, which will be described later, and hydraulic oil is sent to the left and right hydraulic mechanisms (cylinders) 14 so that the left and right side clutches 13, 13 is configured to cut and operate.

  In this case, the relief valve 12 is a power steering relief valve provided in the oil passage 11. However, the relief valve 12 is closed in conjunction with a depression operation of a later-described screed pedal 6, and a high-pressure operation is performed on the hydraulic mechanisms 14, 14 side. The oil can be supplied.

  As shown in FIG. 4, the hydraulic circuit has a configuration in which a cutting upper / lower cylinder 37, an upper / lower adjustment cylinder 38 of the grain discharge auger 21, and the like are incorporated in the circuit on the lower side from the hydraulic mechanism 14. Yes.

  Next, as shown in FIG. 5 and FIG. 7, the take-in pedal 6 is provided at the lower front position of the driver's seat 5, and the above-mentioned pair of left and right side clutches 13 and 13 are operated to the cut side by stepping on the pedal. It is the composition to do. 1, 2, and 3, a pedal arm 6 a is pivotally mounted on a support shaft 7 below the floor, and a return spring is provided on the opposite side of the support shaft 7. 40 is connected and is configured to be tensioned so as to be held at an upper position (a high position before being depressed). When the operator depresses the brake pedal 6, the interlocking wire 41 is first loosened to close the relief valve 12 on the oil passage 11, and then the lower switch operation unit 42 switches the side clutch. The switch 36 is reached and pressed to be turned on. Thus, when the two restraints are released and the depression pedal 6 can be depressed, the relief valve 12 in the oil passage 12 on the hydraulic circuit is closed and the electromagnetic valves 35 and 35 on the oil passage are switched. The hydraulic mechanism 14 (hydraulic cylinder) is operated so that the left and right side clutches 13 are disengaged.

  Then, the take-in pedal 6 is provided with stopper members 8 projecting outward on both sides of the pedal arm 6a away from the pivot fulcrum P, and two first checker 9 and second checker arranged on the left and right. It is configured so that the stepping-in operation can be performed only when ten drafts are released. As shown in FIGS. 1 and 2, one first checker 9 is configured to be interlocked from the main transmission lever 2 via the lot 44, the linkage 45, etc. on one side of the pedal arm 6a. When the main speed change lever 2 is not in the neutral position, it is positioned within the rotation locus of the stopper member 8 to check it, and when it is in the neutral position, the working space 43 formed in a cove is the rotation of the stopper member 8. It is configured to be able to release the check-making for the track. In this case, when the main shift lever 2 enters the working space 43 formed in the creek shape when the stopper member 8 is in the release position and the first checker 9 is in the release position, the margin of the working space 43 is provided. You will be able to operate within.

  Next, the other second checker 10 is arranged on the other side of the pedal arm 6a and connected so as to interlock with the mowing / threshing clutch lever 3, and the mowing / threshing clutch lever 3 is cut off. When it is in the position, it is at the position of the dotted line in FIG.

  Thus, the take-in pedal 6 has two first checkers 9 and 2 on the condition that the main transmission lever 2 is in the neutral position and the mowing / threshing clutch lever 4 is in the on position. The checker 10 is configured to be retracted from the rotation trajectory of the stopper member 8 and to be stepped on.

  Reference numeral 46 denotes an interlocking wire, which is connected to the mowing / threshing clutch lever 4 and is configured to retract the second checker 10 from the turning locus of the stopper member 8 when the mowing clutch 3a and the threshing clutch 3b are engaged. ing.

  As described above, the main transmission lever 2 is connected to the HST 1 so as to be able to perform forward / reverse switching operation and transmission operation, as shown in FIGS. 1 and 2. In addition, the first checker 9 can be switched via a series of transmission paths (lot 44, linkage 45, etc.).

  In the case of the embodiment, the present invention configured as described above stops the traveling of the crawlers 16 and 16 in a state where the main transmission lever 2 is in the neutral position and the HST 1 does not output, and further, cutting, conveying and threshing are performed. Only when the series of devices is in transmission (when the mowing / threshing clutch 3 is in the engaged state), the double check works so that the stepping pedal 6 can be depressed. There is no occurrence of an erroneous operation when the vehicle travels, and it is possible to prevent it in advance, and safety associated with traveling during the cutting and threshing operation is ensured.

  In this embodiment, when the depression pedal 6 is depressed to switch to the scraping operation, the cutting, conveying, and threshing devices are being driven. The efficiency can be increased.

  In the case of the embodiment, the first pedal 9 and the second gear 10 linked to the two operating levers 2 and 4 are used to restrain the brake pedal 6 and maintain the work efficiency while improving safety. However, there is an advantage that the structure is relatively simple and can be manufactured at low cost.

  Further, in the embodiment, when the check production by the two first checker 9 and the second checker 10 is released, the depression pedal 6 is depressed, and the switch operation unit 42 turns on the side clutch changeover switch 36, When the left and right side clutches 13 and 13 are operated to be disconnected by the hydraulic mechanism 14, the relief valve 12 on the oil passage 11 provided in an interlocking state is closed, and the pressure of the hydraulic oil sent to the hydraulic mechanism 14 side is increased. Therefore, the disengagement operation of both side clutches 13 and 13 can be performed accurately.

  When the left and right side clutches 13 are disengaged as described above, the main transmission lever 2 is positioned in the cove-like working space 43 in which the stopper member 8 is formed in the first checker 9. Therefore, the operation can be performed within the margin of the working space 43, and the cutting and conveying speed can be increased.

Next, an embodiment of the grain raising apparatus 50 shown in FIGS. 8 to 11 will be described.
Conventionally, the cedar haul raising device 50 guides and pushes the cereal husks that have been weeded from the stock by the lower halves 51 located in the lower front side to the lower portion of the elevating cover 52 that is located closer to the rear. While being raised, the lug 53 is sent to the starting end portion of the turning area and engaged to start the action. At that time, when the grain straw immediately before cutting is raised from the weed straw 51 side and moved to the apparatus 50, it is raised while colliding with the lower part of the cover 52 and moved to the lug 53 side. The lower part of the plate was worn out, and it was necessary to replace it with a replacement raising cover.

At that time, conventionally, there has been a problem that the entire cover 52 must be raised and a large amount of expenses are required for maintenance.
On the other hand, in the embodiment, as shown in the drawings, the grain raising cover 52 is divided into a lower cover 52a and an upper cover 52b, and the lower cover 52a is divided into (B) in FIGS. The upper cover 52b is engaged with the engaging portion 57 of the lower cover 52a as shown in the exploded view of FIG. The upper part is attached to the attachment part 59 with the knob bolt 58.

  As described above, the embodiment is configured such that the raising cover 52 of the grain raising device 50 is divided into two parts, the lower cover 52a and the upper cover 52b, and each can be detached independently. Only the lower cover 52a or only the upper cover 52b can be freely replaced. Therefore, the embodiment has a feature that the cost can be greatly reduced in the maintenance.

Side view of the main part consisting of a take-in pedal, checker, and main shift lever Front view of the take-in pedal, checker, and main shift lever Side view of the brake pedal and checker Hydraulic circuit diagram Top view of the combine Combine left side view Combine right side view (A) Front view of upper cover (B) Front view of lower cover (C) Front view of raising cover (A) Side view of upper cover (B) Side view of lower cover (C) Side view of pull-up cover Slope view showing the back of the upper and lower covers Front view of the grain raising device

DESCRIPTION OF SYMBOLS 1 Hydrostatic continuously variable transmission 2 Main transmission lever 3 Mowing / threshing clutch 4 Mowing / threshing clutch lever 5 Driver's seat 6 Take-in pedal
6a Pedal arm 7 Support shaft 8 Stopper member 9 First checker 10 Second checker 11 Oil passage 12 Relief valve 13 Side clutch 14 Hydraulic mechanism 19 Mowing transport device P Rotation fulcrum

Claims (2)

A main transmission lever (2) for shifting the hydrostatic continuously variable transmission (1), a cutting / threshing clutch lever (4) for turning on and off the cutting / threshing clutch (3), and a stepping operation to stop the running A scraping pedal (6) that enables the cutting and conveying device (19) to be driven is provided, the main transmission lever (2) is in the neutral position, and the cutting and threshing clutch lever (4) is in the on position. Only in this case, the pedal arm (6a) provided at the upper end with the pedal pedal (6) can be operated and the support shaft (7) can be pivoted (P). A stopper member (8) is provided on the side surface of the pedal arm (6a) so as to protrude from the rotation fulcrum (P) so as to protrude outward, and the stopper member (8). of Said main shift lever (2) co was second restraining member and (10) arranged in conjunction with the first restraining member (9) and the reaper-threshing clutch lever (3) in conjunction with Nbain in movement trajectory. When the first checker (9) and the second checker (10) are released from the restraint, the brake pedal (6) is provided with a relief valve (12) on the oil passage (11) in accordance with the depression operation. The combine according to claim 1, wherein the left and right side clutches (13, 13) are operated to be turned right and left simultaneously by a hydraulic mechanism (14) that operates based on an electromagnetic valve operation .

Images