JPH0755877Y2 - Harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to a harvester such as a combine equipped with a cutting blade.

[Prior Art] Conventionally, as disclosed in Japanese Utility Model Publication No. 1-10999, there has been a technology for restricting the high speed side switching of the mowing section speed change lever by operating the high speed side of the continuously variable speed change lever.

[Problems to be Solved by the Invention] In the prior art, when the continuously variable transmission lever is operated at a high speed, the high speed side switching of the mowing unit speed change lever is blocked, abnormal high speed driving of the mowing unit is blocked, and the traveling speed is reduced. Even if the cutting speed is slowed down, the mowing speed can be increased and the work can be performed.However, when the continuously variable speed is fine forward, even if the mowing work can be performed by the high speed mowing, the work becomes extremely inefficient. There are problems that a gear mechanism with a large speed increasing ratio is required to perform the mowing work, and that the gear ratio becomes large and the mowing drive force becomes insufficient.

"Means for Solving the Problem" Therefore, the present invention, in order to change the traveling speed steplessly by the cutting synchronous continuously variable transmission mechanism in which the traveling speed and the cutting speed are changed in conjunction with each other, and the operation of the continuously variable transmission mechanism. In a harvester equipped with a traveling speed change lever and a work lever for driving and stopping the mowing section, a fine speed checker that prevents the traveling speed change lever from stopping at a slight forward speed position, and a traveling speed change lever move to a high speed forward speed position. High-speed restraint body that regulates
A connection that is movably provided in an operating position or a non-operating position with respect to the traveling speed change lever, and that moves each of the check bodies in the non-acting position into the operating position with respect to the traveling speed change lever, in conjunction with the operation of driving the cutting lever of the work lever. It is characterized by having a tool.

[Operation] Therefore, since the travel speed change lever is operated within the proper forward travel range between the fine speed advance position and the high speed advance position, which is inappropriate for performing the mowing work, it is easy for the check levers to operate the travel speed change lever erroneously. Can be prevented, can easily perform a traveling speed change operation suitable for mowing work, can prevent the forward traveling at an extremely slow speed without raising the grain culm or cutting the stock,
It is not necessary to assume the reaping work by the slow-moving forward where the reaper is improperly driven, and the reaping drive structure can be simplified and the handling operability can be easily improved. At this time, each of the restrainers can stand by in a non-acting position, and can be easily loaded / unloaded on / from a truck carrier for transportation or moved in / out of a field by a very slow forward movement.

In addition, a mowing-tuned continuously variable transmission mechanism in which the traveling speed and the mowing speed are changed in an interlocking manner, a traveling speed change lever for continuously changing the traveling speed by operating the continuously variable transmission mechanism, and driving and stopping operations of the mowing section. In a harvester equipped with a working lever, a fine speed checker that prevents the traveling speed change lever from stopping at a slight speed forward position is movably provided in an operating position or a non-operating position with respect to the traveling speed change lever, and the working lever is cut off. A connecting tool for moving the restraining member in the non-acting position is provided at the operating position with respect to the traveling speed change lever in conjunction with the section driving operation. Since the traveling speed change lever is operated by, the erroneous operation of the traveling speed change lever can be easily prevented by the restraint body, and the traveling speed change operation suitable for the cutting work can be easily performed. It is possible to prevent the forward running at extremely low speed without raising the grain culm or cutting the root of the stock, and it is not necessary to assume the cutting work by the low speed forward where the cutting unit is improperly driven, and the cutting drive The simplification of the structure and the improvement of handling operability can be easily performed, and when the vehicle is traveling on the road without mowing work, the checker stands by at the non-acting position and is loaded or unloaded on the transportation truck bed. It is possible to easily move in and out of the field by moving at a slow speed.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view of the main parts, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the combine, where (1) is a track frame on which traveling crawlers (2) and (2) are mounted. , (3) is a machine base fixedly supported on the track frame (1), (4)
Is a threshing section in which the feed chain (5) is stretched on the left side and the handling cylinder (6) is built in, (7) is a weed plate (8), a raising case (9), a cutting blade (10), and a grain A mowing section for two articles provided with a culm transport mechanism (11) and the like (12) is the feed chain (5)
A straw cutter that faces the end of the straw chain (13) connected to the end, (14) an engine that drives each part of the combine, (15) a threshing part (4) that faces the fried cylinder (16) The paddy tank that stores the grains extracted from (17) is the driver's seat (1
8) A driver's cab provided with a driving operation unit (19), configured to continuously mow grain culms in the reaping unit (7) while traveling and to perform threshing processing on the culled grain culms in the threshing unit (4). is doing.

Further, a traveling gear shift lever (21) and a work lever (22) are provided in front of and behind the upper surface of the side column cover (20) on the left side of the driver's seat (18). As shown in FIG.
1) The lower end is erected on the vertical axis (23) via the base plate (24), the vertical axis (23) is supported on the horizontal axis (25) via the bearing plate (26), and the vertical axis (23) With the fulcrum as a fulcrum, the lever (21) is swung left and right, and the lever (21) is swung back and forth with a horizontal shaft (25) as a fulcrum, and a linking rod (27) that penetrates the base plate (24). The forward / reverse switching link (28) is connected to the lever (21) via the lever, and the link (28) is swung left and right in conjunction with the left and right swing of the lever (21) to move the traveling output forward or backward. It is configured to switch to.

Further, the forward arm (29) and the reverse arm (30) are attached to the horizontal shaft (25) so that they can swing back and forth, and the lever (21) swings left and right to selectively move the arms (29) and (30). Fix the connecting pins (31) (32) to be locked to the base plate (24),
Lever guide groove (3
When the lever (21) is swung left and right by the guide of 3), one of the arms (29) and (30) is connected to the lever (21) via the pins (31) and (32), and the lever (21) is connected. The forward arm (29) is swung forward by the forward swing of (21), and the backward arm (30) is swung backward by the backward swing of the lever (21).

Furthermore, the ring cone continuously variable transmission mechanism (35) having the ring cone (34) is internally provided in the mission case (36),
The shifting output of the mechanism (35) is transmitted to the traveling crawler (2) and each driving unit of the mowing unit (7) as a driving force to form a mowing synchronized gear shifting structure in which the traveling speed and the mowing speed are geared together. At the same time, the speed control and deceleration solenoids (39) and (40) for connecting the hydraulic pump (38) to the hydraulic cylinder (37) for gear shift operation of the mechanism (35) and the operation control of each solenoid (39) (40) And a gear change switch (41).

Then, each of the arms (29) and (30) is connected to the operation shaft (42) of the switch (41) via the linking rods (43) and (44) to move the lever (21) forward or backward. The forward movement activates the speed-up solenoid (39) via the switch (41) to control the speed-up of the transmission mechanism (35), and the lever (21) is moved from the forward position or the reverse position to the neutral direction. The return operation activates the deceleration solenoid (40) via the switch (41) to control the deceleration of the speed change mechanism (35), and the feedback arm (45) for detecting the speed change position of the speed change mechanism (35) is provided with the switch. Connect the feedback input link (46) of (41) to the lever (2
The speed change mechanism (35) is configured to be maintained at the speed change output position proportional to the switch (41) operation amount of 1).

Further, as shown in FIG. 5, the side column cover (20)
A work lever (22) is swingably attached to the front and rear via a fulcrum shaft (47), and the lever (22) is connected to a threshing clutch that drives and controls the threshing unit (4). Swing backward to stop the threshing part (4), and swing the front of the lever (22) to engage the threshing clutch,
A partial linkage link mechanism (48) that interlocks when the lever (22) is swung further forward from the threshing-insertion position is provided, and the link mechanism (48) is provided to the cutting clutch that drives and controls the cutting unit (7). Lever (22) to connect, lever (22)
So that the threshing section (4) and the cutting section (7) are driven while the lever is swung further forward from the threshing-in position to engage the mowing clutch and the lever (22) is supported at the mowing-in position. Is configured.

Further, as shown in FIGS. 1 and 5, a pair of minute speeds are provided on the forward side of the lever guide groove (33) near the neutral position to prevent the traveling speed change lever (21) from stopping at the minute speed forward position. Check rollers (49a) (49b) and the lever (21)
Equipped with a pair of rice harvesting speed restraining rollers (50a) (50b) which are high speed restraining bodies for restricting movement of the rice to a high speed forward position, and each roller (49a) (50) on one side of the lever guide groove (33).
b) is supported on the side column cover (20) through the support shafts (51) and (51) to support the rollers (49b) and (50b) at a fixed position, and the cover (20) supports the support shaft ( 52) (5
2) is provided with a slow-moving restraint arm (53) that pivotally supports an intermediate portion and a mowing speed restraint arm (54) that is a high-speed restraint member,
The rollers (49a) (50a) on the other side of the guide groove (33) are rotatably supported on one end of each arm (53) (54), and the other end of each arm (53) (54) is linked to a link pipe (55). ).

Further, one end side of the check rod (56) is inserted through the pipe (55), a spring (57) is provided at the end of the rod (56), and the pipe (55) is provided in a stopper (58) in the middle of the rod (56). The spring (57) is used to suppress the pressure, and the other end of the check rod (56) is connected to the link mechanism (48) via the check lever (59) to interlock with the cutting mechanism engagement operation of the link mechanism (48). And pull the restraining rod (56) to guide the guide groove (33).
Roller (49a) (4a) is advanced to each roller (49a) (4a)
9b), and the high speed side movement of the traveling speed change lever (21) is regulated by the rollers (50a) (50b) so that the rice can be harvested within the rice harvesting speed range.

Further, a stopper portion (60), which is a high-speed restraining member that prevents the traveling speed change lever (21) from moving on the high speed side of the restraining rollers (50a) (50b), is integrally formed on the restraining arm (54),
Stop the travel speed change lever (21) on the high speed side (60)
It is blocked by the high-speed restraint surface (60a) of the above, and the wheat is cut within the wheat cutting speed range, and the guide groove (3
3) Stopper part (60) sized to block the high-speed side end
When the travel speed change lever (21) is supported by the high speed side end of the guide groove (33), the reaper check surface (60b) of the stopper (60) contacts the lever (21). The link mechanism (48) is configured so as to prevent the cutting clutch from entering and to prevent the cutting clutch from entering in a high speed shift state.

As is clear from the above, the cutting synchronous continuously variable transmission mechanism (35) in which the traveling speed and the mowing speed are changed in an interlocking manner, and the traveling gearshift for continuously changing the traveling speed by operating the continuously variable transmission mechanism (35). A harvester equipped with a lever (21) and a working lever (22) for driving and stopping a reaper (7) is a fine speed checker that prevents the traveling speed change lever (21) from stopping at a fine speed forward position. A certain slow speed control roller (49
a), the rice harvesting speed control roller (50a), which is a high-speed checker that restricts the travel speed change lever (21) from moving to the high speed forward position, and the stopper portion (60).
It is movably provided in an acting position or a non-acting position with respect to 1), and is linked to a driving operation of the reaper (7) of the working lever (22) so that the working position of the non-acting position is changed with respect to the traveling speed change lever (21). A check rod (56) which is a connecting tool for moving the check rollers (49a) (50a) and the stopper portion (60) is provided.

This embodiment is configured as described above, and the work lever (22)
When the cutting unit (7) is operated by operation, the check arms (53) (54) and the check rollers (49a) (50a) move into the lever guide groove (33) in conjunction with the engagement of the cutting clutch, It is supported as shown in FIG.

Under the condition shown in FIG. 1, when the traveling speed change lever (21) is moved in the forward direction of the lever guide groove (33), the lever (21) comes into contact with the check rollers (49a) (49a). By swinging 21) forward, the roller (48) withdraws against the spring (57), the lever (21) passes between the rollers (49a) and (49b), and the lever at the slow forward position is reached. (twenty one)
Prevent the stop.

Then, the lever (21) is set to the low speed side rollers (49a) (49
It moves between b) and the high speed side rollers (50a) (50b) to cut rice. The lever (21) contacts the high speed side rollers (50a) (50b) and the lever (21) operates at high speed. Regulate.

Also, by swinging the lever (21) forward of the high speed side rollers (50a) (50b), the roller (50a) retreats against the spring (57), and each roller (50a) (50b). It is operated at high speed until the lever (21) passes between them and the lever (21) contacts the high-speed check surface (60a) of the stopper part (60). The low-speed side rollers (49a) (49b) and the stopper part (6
Move the lever (21) between 0) to mow the wheat.

Furthermore, when the cutting lever (22) is stopped and the cutting clutch is disengaged, the check rod (5)
By the return movement of 6), the check arms (53) (54) and the check rollers (49a) (50a) withdraw from the lever guide grooves (33), and the travel speed change lever (21) forward shift restriction is released.
You can drive on the road at high speed, and the speed change lever (21)
Is in the forward high speed position, the operation of the work lever (22) to engage the cutting clutch is prevented by the contact between the lever (21) and the cutting control surface (60b) of the stopper portion (60).

Further, as shown in FIG. 6 to FIG. 9, a side column cover (20) is provided with a mowing speed control arm (61) which is a high speed control member for restricting the forward traveling high speed side and the backward traveling speed of the harvesting traveling speed.
The arm (61) is rotatably supported by a fulcrum shaft (62) provided in the rear arm (30) and a bolt (63) for contacting the reverse arm (30) to limit the wheat harvesting speed and the reverse arm (30). An L-shaped plate (64) that abuts to limit the speed of harvesting rice, a check arm (61) is provided with a bolt (63) with adjustable length, and the arm (61) is provided via the bolt (63). Fix the L-shaped plate (64) to the position so that the position can be adjusted.

Further, the linkage link (65) is connected and fixed to the check arm (61), and one end of the check rod (66) is connected to the link mechanism (48) for actuating the cutting clutch by the work lever (22). 66) The other end is connected to the link (65) by the locking pin (67), and when the cutting clutch is engaged,
As shown in Fig. 9 and Fig. 9, the check arm (61) is supported at the working position, and the shift check position by the check arm (61) is changed in multiple stages by properly using the bolt (63) and the L-shaped plate (64). Engagement holes (68) (69), which are switching bodies, are opened in the link (65), and each hole (68) is formed by the narrow groove (70).
Connect (69).

Then, as shown in FIG. 7, the large diameter portion of the pin (67) fixed to the rod (66) is engaged with the engagement hole (68) by the spring (71).
Engage and support in (69), pull out pin (67) against spring (71), move the small diameter part of pin (67) into narrow groove (70), and engage with each engaging hole (68) (69). ) To change the axial distance between the fulcrum shaft (62) and the pin (67) to move the check arm (61) against the rod (66) with a constant stroke. The amount of movement is changed, and either the head of the bolt (63) or the tip of the L-shaped plate (64) is moved to the reverse arm (30).
When the reverse arm (30) is swung by the forward operation of the traveling speed change lever (21), the arm (30) contacts the bolt (63) as shown in FIG. The lever (21) is operated within the range up to and the wheat can be cut within the wheat cutting speed range, while as shown in FIG.
By operating the arm (30) within a range until it comes into contact with the L-shaped plate (64), rice can be harvested within the rice harvesting speed range.

Further, FIGS. 10 to 12 show a modified example of FIG. 6, which is provided with a switching rod (72) which is a switching body for changing the shift control position by the control arm (61) in multiple stages. , The switching rod (72) is attached to the reverse arm (30) via the receiving body (73) so that it can be moved up and down and rotated, and the side column cover (20) side door (74) is opened to open the lever portion (75). Lifting up, the switching rod (72) is raised against the spring (76), and the lever portion (75) is rotated to move the contact portion (77) at the upper end of the switching rod (72) to the notch (78) of the reverse arm (30). ) Is configured to be locked.

Then, as shown in FIG. 10, the contact portion (77) is supported downward, and the reverse arm (30) is brought into direct contact with the bolt (63) head of the check arm (61) to swing the arm (30). While restricting and cutting the wheat within the wheat cutting speed range, as shown in FIGS. 11 and 12, the hitting portion (77) is lifted and supported, and the check arm (61) is
The contact portion (77) is brought into contact with the head of the bolt (63) to regulate the swing of the reverse arm (30), and the rice is harvested within the rice harvesting speed range.

[Advantages of the Invention] As is clear from the above embodiments, the present invention is based on the cutting synchronous continuously variable transmission mechanism (35) in which the traveling speed and the cutting speed are changed in conjunction with each other, and the operation of the continuously variable transmission mechanism (35). In a harvester equipped with a traveling speed change lever (21) for continuously changing the traveling speed and a work lever (22) for driving and stopping the reaper (7), the traveling speed change lever (21) is set to a fine forward position. A slow speed checker (49a) that prevents it from stopping,
Install the high-speed restraint bodies (50a) (60) that restrict the travel speed change lever (21) from moving to the high speed forward position to the travel speed change lever (2
It is movably provided in an acting position or a non-acting position with respect to 1), and is linked to a driving operation of the reaper (7) of the working lever (22) so that the working position of the non-acting position is changed with respect to the traveling speed change lever (21). Each of the restraint bodies (49a) (50a) (60)
Since the connecting tool (56) for moving the vehicle is provided, since the traveling speed change lever (21) is operated within the proper forward range between the fine forward speed position and the high speed forward position, which is inappropriate for performing the cutting operation, By the respective restraining bodies (49a) (50a) (60), it is possible to easily prevent erroneous operation of the traveling speed change lever (21), and it is possible to easily perform a traveling speed change operation suitable for mowing work.
It is possible to prevent forward running at extremely low speed without raising the grain culm or cutting of the root of the stock, and it is not necessary to assume the cutting work by the slow speed forward in which the cutting unit (7) is improperly driven, and the cutting drive is performed. The simplification of the structure and the improvement of the handling operability can be easily performed, and at the time of traveling on the road without cutting work, each of the check bodies (49a) (50
a) (60) can stand by at the non-acting position, and can be easily loaded / unloaded on / from the truck bed for transportation or moved in / out of the field by a very slow forward movement.

Further, the cutting synchronous stepless speed change mechanism (35) in which the traveling speed and the cutting speed are changed in conjunction with each other, and the stepless speed change mechanism (35).
In a harvester equipped with a traveling speed change lever (27) for continuously changing the traveling speed by operation and a work lever (22) for driving and stopping the reaper (7), the traveling speed change lever (21) is moved at a slight forward speed. A slow-moving restraining body (49a) for preventing the vehicle from stopping at a position is movably provided at an operating position or a non-operating position with respect to the traveling speed change lever (21), and a driving operation of the cutting portion (7) of the working lever (22). In conjunction with
A connecting tool (56) for moving the restraining body (49a) in the non-acting position is provided at the operating position for the traveling speed change lever (21). Since the traveling speed change lever (21) is operated within the range, the traveling speed change lever (21) is moved by the restraining body (49a).
It is possible to easily prevent the erroneous operation of the cutting, to easily perform the traveling speed change operation suitable for mowing work, and to prevent the forward running at extremely low speed without raising the grain stem or cutting the stock, It is not necessary to assume a reaping work by a very slow forward movement in which the part (7) is improperly driven, and the reaping drive structure can be simplified and the handling operability can be easily improved, and the reaping work is not performed. When traveling on the road or the like, the restraining body (49a) stands by at a non-acting position, and it is possible to easily carry out loading / unloading to / from a truck bed for transportation or entry / exit to / from a field by a very slow forward movement.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part showing an embodiment of the present invention, FIG. 2 is a side view of a combine, FIG. 3 is a plan view of the combine, FIG. 4 is an explanatory view of a traveling transmission unit, and FIG. 6 is a side view of the lever mounting portion, FIG. 6 is a side view of the lever mounting portion provided with a check arm, and FIG.
FIG. 9 to FIG. 9 are partial explanatory views of FIG. 6, and FIG. 10 to FIG. 12 are explanatory views showing modified examples of FIG. (21)… Travel speed change lever (50)… Check roller (high speed checker) (54)… Mowing speed checker arm (high speed checker) (60)… Stopper part (high speed checker) (61)… Mowing speed checker arm (High-speed check member) (68) (69) ... Engagement hole (switching body) (72) ... Switching rod (switching body)

Claims (2)

[Scope of utility model registration request] Claims: 1. A mowing tuned continuously variable transmission mechanism (35) in which the traveling speed and the mowing speed are changed in an interlocking manner, and a traveling speed change lever (35) for continuously changing the traveling speed by operating the continuously variable transmission mechanism (35). 21) and a working lever (22) for driving and stopping the reaper (7), in the harvester, a fine speed control body (49a) for preventing the traveling speed change lever (21) from stopping at the fine speed forward position. And the high speed restraint body (50a) (6a) that restricts the travel speed change lever (21) from moving to the high speed forward position.
0) is movably provided in a working position or a non-working position with respect to the travel speed change lever (21), and is linked to the travel speed change lever (21) in conjunction with the operation of driving the reaper (7) of the work lever (22). A harvester characterized in that a connecting tool (56) for moving each of the restraining bodies (49a) (50a) (60) in the non-acting position is provided at the acting position. 2. A mowing-synchronized continuously variable transmission mechanism (35) in which the traveling speed and the mowing speed are changed in conjunction with each other, and a traveling speed change lever (35) for continuously changing the traveling speed by operating the continuously variable transmission mechanism (35). 21) and a working lever (22) for driving and stopping the reaper (7), in the harvester, a fine speed control body (49a) for preventing the traveling speed change lever (21) from stopping at the fine speed forward position. Is movably provided in an acting position or a non-acting position with respect to the traveling speed change lever (21), and in conjunction with the operation of driving the reaper (7) of the working lever (22), the operating position with respect to the travel speed change lever (21). Then, a connecting tool (5) for moving the restraining body (49a) in the non-acting position.
6) A harvester characterized by being provided.