JP2594108Y2 - Traveling device for combine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling apparatus for improving the traveling performance of a combine in wet fields.

[0002]

2. Description of the Related Art Left and right track frames in a crawler traveling device are provided so as to be displaceable forward from below, and the track frames are displaced when the traveling power transmission system is operated in a reverse direction. It is known that the height of the vehicle is sometimes increased and the center of gravity is moved to the rear side of the fuselage so that the forward fall of the fuselage is suppressed to improve the reverse running performance (for example, see Japanese Patent Application Laid-Open No. H4-15177).

[0003]

In the prior art, the crawler traveling device can be changed to the backward traveling posture by the displacement of the track frame, but the head for adjusting the vehicle height is increased.
Since the vehicle was small and could not be operated at an arbitrary reverse traveling speed in the reverse traveling posture, there was a problem that the reverse operation could not be performed at the posture and speed suitable for the environmental condition of the traveling place.

[0004]

According to the present invention, a vehicle can be secured at a required height in a state where the crawler traveling device is in a reverse traveling posture by displacement of a track frame, and the vehicle can be reversely traveled at an arbitrary reverse speed. By arranging it to be able to do so, conventional difficulties are eliminated.

[0005]

[Operation and effect of the invention] The device of the invention is located in front of the machine base (2).
Drive wheel (10) arranged on one side and the rear side of the machine base (2)
Tension ring (11) to be placed on the two wheels (10) (1)
A plurality of wheels (12 to 15) arranged on the ground side between 1)
And disposed on the non-ground side between the two wheels (10) and (11).
Hang the rubber crawler (a) with the bearing ring (16)
And a driving wheel (10) and a bearing wheel.
(16) is fixedly mounted on the machine (2) side,
The tension wheel (11) and the plurality of rolling wheels (12-15)
Frame frame (1) that can be displaced forward
The driving transmission system that drives the driving wheels (10) after installation
When the track frame (1) is switched to the forward side, the displacement of the track frame (1) is performed, and the tension wheel (11) and the plurality of rolling wheels (12 to
15), the suspension shape of the rubber crawler (a) changes.
Shape is made, since then have to be able to reverse running is set to any of the reverse speed, the lower the track frame
Deformation of the rubber crawler due to displacement from
As a result, a large vehicle height adjustment head is ensured, and the vehicle can travel backward by setting the crawler traveling device to the reverse traveling posture and setting it to an arbitrary reverse speed suitable for the environmental condition of the traveling place.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The traveling device for combine according to the present invention will be described below with reference to the drawings. (2) is a frame-structured machine, and a threshing unit (3) is provided on the left side of the machine (2).
Is installed on the right side, and a grain tank (5) for storing grains from the control unit (4) and threshing unit (3) is installed, and ascends and descends from the front of the threshing unit [3] to the control unit (4) side. A free harvesting unit (6) is continuously provided, and a straw processing unit (7) for processing straw after threshing is connected to the rear side of the threshing unit (3).
A crawler-type traveling device (8) is provided below the machine base (2) to support the machine base (2) to form a combine.

[0007] Power from an engine (not shown) is transmitted to each part. The traveling device (8) is provided with a front drive sprocket (10) via a traveling transmission system in a transmission case (9). ), And the right and left rubber crawlers (a) are driven by the driving sprocket (10).

The left and right rubber crawlers (a) are provided with a tensioning wheel (11) biasing rearward at the rear end with the driving sprocket (10), a driving sprocket (10) and a tensioning wheel (1).
1) The first, second, third, and fourth rolling wheels (12), (13), (14), and (15) on the grounding side and the upper bearing wheel (16) are disposed between the first and second rolling wheels. The first to fourth rolling wheels (12), (13), (14), and (15) on the ground side and the tensioning wheel (11)
Are supported on the track frame (1) from the front end to the rear end so as to freely rotate.

(17) and (18) are variable members, and the variable members (17) and (18) are bell crank levers.
The middle part is supported by the front support shaft (19) and the middle support shaft (2).
0) are rotatably fitted to the respective ends, and the upper part (a) is extended upward and the lower part (b) is extended rearward, and each upper part is connected to the connecting rod. (21) The rod (2) of the hydraulic cylinder device (22) attached to the machine base (2) with the upper end of the movable member (18) on the rear side extended (a) and the rear end extended backward. 23), the lower ends of the front and rear movable members (17) and (18) are connected to the front and rear portions of the track frame (1) to drive the hydraulic cylinder device (22). The first frame together with the track frame (1)
To the fourth rolling wheels (12), (13), (14), (15) and the tensioning wheel (11) can be displaced from below toward the front so that the suspension shape of the rubber track (a) can be adjusted to a height. The height (H) of the machine base (2) is increased by deforming the machine into a certain trapezoidal shape and moving the ground contact surface to the front side, so that the center of gravity (G) of the machine body can be moved rearward.

[0010] Although only the left side of the traveling device (8) is described, the right side of the traveling device (8) has the same configuration, and a description thereof will be omitted.

Here, the structure inside the transmission case (9) will be described. As shown in FIG. 6, an input shaft (24), an intermediate shaft (25) and a transmission shaft (2).
6) and an output pulley (28) having an output shaft (27) and rotated by the engine.
To the speed change cam (2) from the input shaft (24).
The continuously variable transmission and forward / reverse switching of the output shaft (27) are performed on the output shaft (27) by the belt transmission mechanism (30), the planetary gear mechanism (31), and the forward / reverse clutch section (32) by the operation of 9). The side gear input gear (34) is engaged with the ring gear (33) that is engaged and supported by the engagement gear 27), and the left and right final gears (36) and (36) that are engaged and supported by the left and right sprocket shafts (35) and (35). The output shaft (27) via a side clutch (c) (c)
Is transmitted.

The left and right side clutches (c) and (c)
Has side clutch output gears (37) and (37) that always mesh with the final gears (36) and (36), and has clutch claws (38) and (3) of the side clutch input gear (34).
The clutch claws (39) (39) to be engaged with 8) are formed inside the output gears (37) (37), and the ring grooves (40) (40) are formed outside the output gears (37) (37).
And the outer end faces (4) of the output gears (37) and (37).
1) Brake shoes (42) and (42) are fixed inside the transmission case (9) facing (41) to form left and right side brakes (43) and (43), and output gears (37) and (37). The shift forks (44) and (44) are engaged with the ring grooves (40) and (40), respectively.

4 and 5, the operation of the speed change cam (29) and the back chain are described with reference to FIGS. 4 and 5. Reference numeral (45) guides a main speed change lever (46) provided in the control section (4). An operation panel having a guide groove (45a) formed therein. Reference numeral (47) designates a forward / reverse switching member, with the main shift lever (46) in the neutral position and swinging about the shaft (48) as a fulcrum. The shift fork (5) is connected via the arm (49), the wire (50) and the arm (51).
2) is operated to switch the forward / reverse rotation clutch portion (32) in the transmission case (9), and the forward / reverse switching member (47) is provided with a long hole (53) in the front-rear direction, and The lever (46) is inserted through the guide groove (45a) and the long hole (53), and the arm (55) is moved up and down about the axis (54) by a front-rear operation using the one axis (54) as a fulcrum. By doing so, the tip of the arm (55) and the speed change cam (29) are operated, and the height is adjusted by the belt speed change transmission mechanism (30) and the planetary gear mechanism (31), and the other shaft (57) is adjusted. ), The forward / backward switching member (47) is swung right and left by an operation to the left and right with the fulcrum as a fulcrum.

Therefore, when the rotational force from the engine drives the input shaft (24) via the input pulley (28) and moves the main speed change lever (46) back and forth along the forward side of the guide groove (45a), the engine advances. The speed is shifted up and down, the aircraft stops at the neutral position, and the reverse speed is adjusted by switching to the reverse side at the neutral position.

An electromagnetic switch (s) is provided at a position where the forward / reverse switching member (47) contacts and operates when the forward / reverse switching member (47) swings to the reverse side, and the electromagnetic switch (s) and the electromagnetic valve are electrically connected. The hydraulic cylinder device (22) is driven through an electromagnetic valve, and the main shift lever (46) is switched to the reverse side at the neutral position to shift the fork (5).
When the back chaining is performed according to 2), as described above, the hydraulic cylinder device (22) is driven to deform the suspension shape of the left and right rubber crawlers (a) into a trapezoidal shape having a height and to move the ground contact surface forward. The height (H) of the machine base (2) is increased to move the center of gravity (G) of the machine to the rear, and the main shift lever (46) is rocked to the neutral position and the forward side to move forward and backward. The switching member (47) is separated from the electromagnetic switch (s) and the hydraulic cylinder device (22)
Accordingly, the rubber crawler (a) is configured to return to the original suspended shape, and the center of gravity (G) of the machine body also returns to the original position.

In this way, the main transmission lever (46) is operated in the guide groove (45a) from the neutral position to the reverse side to switch back and forth in order to escape by reversing, particularly when traveling in a wet field becomes impossible. When the member (47) is switched and back-changed, the forward / reverse switching member (47) contacts the electromagnetic switch (s), energizes the electromagnetic valve from the electromagnetic switch (s), and the hydraulic cylinder device ( 22) is driven to change from the state shown in FIG. 2 to the state shown in FIG. 1 by the fluctuating members (17) and (18), and the left and right rubber crawlers (a) are deformed and the height of the machine base (2) is changed. (H) is raised, and the center of gravity (G) of the body is moved backward.

That is, the rubber crawler (a) is deformed from the state of the solid line shown in FIG. 3 as shown by the imaginary line (c) to increase the suspended height (h), and the height of the machine base (2) (H) is raised, the ground contact surface (L) is moved forward as shown in (L1), the vehicle is in a reverse running position, and the main speed change lever (46) is operated along the reverse side of the guide groove (45a). If the driving sprocket (11) rotates, the rubber crawler (a) rotates and can easily escape from the wetland.

The traveling device (8) is provided with a horizontal sensor for keeping the machine base (2), that is, the body in the horizontal direction, and drives the left or right hydraulic cylinder (22) by detecting this sensor. There is also a function to correct this to a horizontal state according to the inclination of the aircraft left and right,
The rubber crawler (a) moves downward in the range from the state of the solid line to the state of the virtual line (d) in FIG.

Referring now to FIG. 7, a drive sprocket is mounted on the front end of each of the left and right track frames (1), and a tension wheel is mounted on the rear end.
In the meantime, several wheels are freely rotatably arranged and a rubber crawler (a) is suspended therefrom. The track frame (1) is obliquely outwardly mounted on the track frame (1) from the front and rear portions on the back surface of the machine base (2). The height (H) of the machine base (2) is increased by driving and extending the hydraulic cylinder device (22) by connecting the hydraulic cylinder device (22) extended toward The vehicle width (W) of the crawler (a) increases.

Therefore, when traveling in wet fields, the height (H) of the machine base (2) is increased and the vehicle width (W) of the rubber crawler (a) is changed widely so that the airframe rises and the stability is improved. .

[Brief description of the drawings]

FIG. 1 is a side view of the whole combine showing the main part of the present invention.

FIG. 2 is a side view of the traveling device.

FIG. 3 is an operation diagram showing a deformed state of a suspended shape of a rubber track.

FIG. 4 is an explanatory diagram of a traveling operation.

FIG. 5 is a plan view of the traveling operation unit.

FIG. 6 is a transmission diagram of a transmission in a transmission case.

FIG. 7 is a schematic rear view showing another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Track frame 2 Machine stand 8 Crawler traveling device 9 Transmission case 10 Drive wheel 11 Tension wheel 12 Roller wheel 13 Roller wheel 14 Roller wheel 15 Roller wheel 16 Bearing wheel a Rubber crawler

Claims (1)

(57) [Scope of request for utility model registration] A drive wheel (1) disposed in front of a machine frame (2).
0) and a tension ring (11) arranged behind the machine (2).
On the grounding side between the two wheels (10) and (11).
A plurality of rolling wheels (12 to 15) and the two wheels (10) (1
1) Rubber ring is attached to the bearing ring (16)
The crawler traveling device is constituted by suspending the roller (a).
The drive wheel (10) and the bearing wheel (16) are located on the machine base (2) side.
The tension ring (11) and a plurality of rolling
The wheels (12 to 15) can be displaced forward from below.
Drive wheels (10) installed on the rack frame (1)
Is switched to the reverse side, the displacement of the track frame (1) is performed, and the tensioning wheel (1 ) is moved.
1) and the displacement of the plurality of wheels (12 to 15)
A combine traveling device in which the roller (a) is deformed in a suspended shape , and thereafter is set at an arbitrary reverse speed so that the vehicle can travel backward.