JPH0580229U - Combine gear change operation device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the structure that enables the forward / backward movement and the left / right movement of the speed change lever (23) and to easily adjust the lever angle. [Structure] The shift lever (23) and this shift lever (2
3) A gearshift lever (23) is provided between the gearshift arm (25) and a gearshift arm (25) which is rotatably attached to the pivotal fulcrum shaft (24) in the front-rear direction.
A leaf spring (33) for enabling the left and right movements of the leaf spring (33) and tightening the shift lever (23).
Or a bolt hole of a leaf spring (33) for tightening the speed change arm (25), in a direction substantially orthogonal to the radial direction of the rotation fulcrum shaft (24) of the speed change lever (23) or a rotation fulcrum. It is formed in a long hole (34) in the circumferential direction around the shaft, and the lever angle is adjusted by operating the speed change lever (23) up and down through the long hole (34).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a combine speed change operation device for threshing a grain culm harvested by a mowing section at a threshing section while the machine body is traveling.

[0002]

[Prior Art]

 Conventionally, a gear shift lever for remotely operating a gear shift arm of a traveling mission is arranged in a side column of a driving operation unit, and the gear guide hole formed on the upper surface of the side column is a long hole in the front-rear direction. The forward operation hole on the front side of the neutral position and the backward operation hole on the rear side are misaligned to the left and right to prevent erroneous operation. In the case of the shift guide hole shape as described above, as shown in FIG. 9, one end of the shift arm (c) is attached to the fulcrum shaft (a) in the front-rear direction of the shift lever (a) fixed to the side column. (D) is rotatably supported, and the shift gear (f) of the traveling mission (e) is connected to the shift arm (c) by a shift rod (key) whose length is adjustable. The lower end of the speed change lever (a) is rotatably supported by a left and right rotation fulcrum boss (h) integrally fixed to the boss (d) of the speed change arm (c), and the speed change lever (a) is guided by the speed change guide. It was able to operate along the hole shape. Also, the angle of the gearshift lever (a) was adjusted by adjusting the screw at one end of the gearshift rod (g) between the gearshift arm (c) and the gearshift arm (f).

[0003]

[Problems to be solved by the device]

 In the prior art, the structure that allows the forward / backward movement and the left / right movement of the speed change lever (a) is complicated, the number of parts increases, the cost also increases, and when adjusting the lever angle, It was necessary to remove one end of the speed change rod (g) from the speed change arm (c) or the speed change shift arm (f) by removing the snap pin, which was a problem that could not be easily done.

[0004]

However, according to the present invention, the left and right movements of the speed change lever are provided between the speed change lever and the speed change arm that is rotatably attached to the front and rear rotation fulcrum shaft of the speed change lever. In addition to providing a leaf spring that enables the change, the bolt hole of the leaf spring that tightens the speed change lever or the bolt hole of the leaf spring that tightens the variable speed arm should be roughly aligned with the radial direction from the rotation fulcrum shaft of the speed change lever. It is formed in a long hole in the right angle direction or in the circumferential direction around the rotation fulcrum shaft, and the lever angle is adjusted by operating the speed change lever up and down through this long hole. The structure that enables forward and backward movement and left and right movement is simpler than before, and it is possible to reduce the number of parts and cost, and to adjust the lever angle to adjust the leaf spring and gear shifting. Lever or strange These can be done without cutting them apart by simply loosening the bolts that fasten the arm, and the lever angle can be adjusted more easily than before, and even if one of the two bolts is loosened, When the lever is rotated, the bolt is always pressed vertically against the side wall of the long hole, so that the lever is not displaced and the gear can be surely shifted.

[0005]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a main part, FIG. 2 is an overall side view of the combine, FIG. 3 is a plan view of the combine, and FIG. 4 is a front view of the combine, in which (1) is a truck equipped with a traveling crawler (2). A frame, (3) is a machine stand installed on the track frame (1), and (4) is a feed chain (5) stretched on the left side and has a handling cylinder (6) and a processing cylinder (7) built therein. Threshing unit, (8) Mowing unit equipped with a cutting blade and grain culm transport mechanism, (9) Straw chain (10) (11) Straw processing unit facing the end, (12) Driver's seat A driver's cab provided with (13) and a driving operation unit (14), (15) an engine installed in an engine case (16), and (17) on the right side of the threshing unit (4) at the rear of the engine case (16). It is a grain tank that is installed and stores the grain from the threshing unit (4) through the lifting cylinder (18). It is configured to threshing with threshing section the culms which remove all laminae in cutting preparative section (8) (4) while.

Further, the driver's cab (12) is formed on the right side of the cutting unit (8) so that the driver's seat (16) is formed on the upper surface of the engine case (16) formed at the rear of the driver's cab (12). 13) is provided and the front column (19) is installed upright from the front of the driver's cab (12) in front of the driver's seat (13), and from the left side of the driver's cab (12) to the driver's seat (13). The operation column (14) is formed by the side column (20) standing on the left side.

Then, as shown in FIGS. 5 and 6, the speed change shift arm (22) of the traveling mission (21) fixed to the front end of the machine base (3) is mounted on the side column (20). The gear shift lever (23) is remotely operated, and the gear shift arm (25) is rotatably pivoted on the fixed shaft (24) inside the side column (20). The gear shift lever (25) is linked with the gear shift rod (26) and is inserted into the side column (20) through the gear shift guide hole (27) formed in the upper surface of the side column (20). 23) The lower end is connected to the speed change arm (25), the speed change lever (23) and the speed change shift arm (22) are operatively connected, and the front and rear around the fixed shaft (24) of the speed change lever (23). Directional movement in front It is configured to perform the third forward speed and the first reverse speed.

Further, as shown in FIG. 7, the speed change guide hole (27) is formed in a long hole shape that is long in the front-rear direction, and the forward operation hole (27a) is located forward of the neutral position in the middle of the guide hole (27). The rear operation hole (27b) on the rear side and the rear operation hole (27b) are displaced to the left and right to prevent erroneous operations such as erroneously operating the lever (23) from each shift position on the front side to the reverse position.

Further, a shift guide hole (29) corresponding to the shift guide hole (27) is formed in the resin panel (28) covering the upper surface of the side column (20), and the upper portion of the shift lever (23) is guided by each guide. It projects through the holes (27) and (29) to the upper surface of the side column (20), and closes the guide holes (27) and (29) between the iron plate side column (20) and the resin panel (28). The rubber pad (30) as shown in the drawing, and a notch (31) running in the center of each guide hole (27) (29) is formed in the rubber pad (30) and each shift of the shift lever (23) is changed. Positioning holes (32) at the operating position are formed on the notches (31) of the rubber pad (30), and the shift lever (23) can be moved without using a complicated detent structure including a detent arm and a detent spring. The rubber pad (30) prevents the hot air generated in the lower part of the side column (20) from being blown toward the upper surface of the side column (20) through the guide holes (27) (29). It is configured to do.

The rubber pad (30) is also provided in a guide hole portion of a lever other than the speed change lever (23).

Further, as shown in FIG. 1, a leaf spring (33) is provided between the speed change lever (23) and the speed change arm (25), and the leaf spring (33) is connected to the speed change lever (23) and the speed change gear. A complex structure in which the boom (25) is connected to each other through a pair of upper and lower bolts (34) and nuts (35), and a horizontal rotation fulcrum is provided at the front and rear rotation fulcrums of the speed change lever (23). The shift lever (23) is configured to be movable in the front-rear direction and the left-right direction without using, and the shift lever (23) is configured to be movable along the shape of each guide hole (27) (29).

Further, the bolt holes of the leaf spring (33) for the speed change arm (25) are formed in the oblong holes (36) (36), and the rotation fulcrum shaft (24) of the speed change lever (23) is used. Bolts that are formed in elongated holes (36) (36) in a direction substantially perpendicular to the radial direction of the gear or in a circumferential direction centered on a rotation fulcrum shaft and fasten a leaf spring (33) to the speed change arm (25). (34) By loosening (34) and moving the shift lever (23) up and down together with the leaf spring (33), the lever angle of the shift lever (23) can be adjusted without disconnecting them. In addition, the bolts (34) (34) are always pressed vertically against the side walls of the slots (36) (36) when the lever (23) is rotated.

The same effect can be obtained by forming the bolt holes of the leaf spring (33) for the speed change lever (23) in the long holes (36) (36).

In FIG. 8, in the tension clutch (40) for interrupting the power transmission by the belt (39) between the output pulley (37) and the input pulley (38), the tension spring (41) and the tension plate (42) A tension screw (43) for connecting the tension plate (42) to the tension plate (42) is a stepped nut (44), and the tension screw is rotatable by providing play with the tension plate (42). The mounting structure of (43) is disclosed. With this structure, like the structure in which the tension screw (43) is tightened to the tension plate (42), the tension spring (41) is loosened due to the twist of the tension spring (41), and a predetermined clutch load cannot be obtained. It is possible to eliminate the inconvenience, and it is possible to eliminate the application of an unreasonable torsional load that adversely affects the tension spring (41).

A stepped nut (rotatably fitted into a hole on the side of the tension plate (42) from the thickness (A) of the tension plate (42) where the tension screw (43) is attached is rotatably attached. The height (B) of the small diameter portion of 44) is increased so that the tension plate (42) is not held by the large diameter portion of each stepped nut (44), that is, the bottom portion.

[0016]

[Effect of the device]

 As is apparent from the above-described embodiments, the present invention comprises a speed change lever (23) and a speed change arm (25) rotatably attached to a front and rear rotation fulcrum shaft (24) of the speed change lever (23). A leaf spring (33) that allows the gear shift lever (23) to move in the left-right direction is provided therebetween, and a bolt hole of the leaf spring (33) that tightens the gear shift lever (23) or the gear shift arm (25) is provided. The bolt hole of the leaf spring (33) to be tightened is formed in an elongated hole (in the direction substantially perpendicular to the radial direction of the rotation fulcrum shaft (24) of the speed change lever (23) or in the circumferential direction about the rotation fulcrum shaft ( 34), and is configured to adjust the lever angle by operating the speed change lever (23) up and down through the elongated hole (34). The structure that enables lateral movement It is simpler than before, the number of parts can be reduced, the cost can be reduced, and the lever angle can be adjusted with the leaf spring (33) and the shift lever (23) or the shift arm (25). The bolts (34) that are tightening can be loosened without separating them, and the lever angle can be adjusted more easily than before, and the two bolts (34) (34) ), The bolts (34) and (34) are always pressed vertically against the side walls of the slots (36) and (36) when the lever (23) rotates, so that the lever (23) is misaligned. It is possible to achieve a remarkable effect such as reliable gear shifting without occurrence of the occurrence.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a main part.

FIG. 2 is an overall left side view of the combine.

FIG. 3 is an overall right side view of the combine.

FIG. 4 is a plan view of the combine.

FIG. 5 is an explanatory side view of a shift lever portion.

FIG. 6 is a front explanatory view of a shift lever portion.

FIG. 7 is a plan view of a shift guide hole.

FIG. 8 is a view showing a structure of mounting a tension screw of a tension clutch.

FIG. 9 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 (23) Shift lever (24) Fixed shaft (rotating fulcrum shaft) (25) Shift arm (33) Leaf spring (36) Oblong hole

Claims (1)

[Scope of utility model registration request] 1. A leaf spring is provided between the speed change lever and a speed change arm that is rotatably attached to a rotation fulcrum shaft of the speed change lever in the front-rear direction. The bolt hole of the leaf spring that tightens the lever or the bolt hole of the leaf spring that tightens the speed change arm is set in a direction approximately perpendicular to the radial direction from the rotation fulcrum shaft of the speed change lever or around the rotation fulcrum shaft. A combined speed change operation device characterized in that the speed change lever is formed in a direction long hole and the lever angle is adjusted by operating the speed change lever up and down through the long hole.