JPH0445470Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a handling depth adjustment structure for a combine harvester.

(b) Prior Art Conventionally, in a combine harvester in which a reaping device is configured to be able to move up and down and adjust its position in the left and right directions with respect to the machine body, a vertical conveyance device has been provided to adjust the handling depth.

(c) Problems to be solved by the invention However, if the position of the reaping device is configured to be adjustable up and down as well as in the left and right directions, the relative position between the front end of the vertical conveyance device and the conveyance device in front of the same vertical conveyance device will be reduced. As a result, the relative position of the grain culm inheritance changes, and the handling depth in the handling barrel changes, leading to unhandled grain or deep handling, making it impossible to perform threshing work at the appropriate handling depth, and reducing work efficiency. was.

(d) Means for solving the problem In the present invention, in a combine harvester having a threshing device, the position of the reaping device can be adjusted up and down as well as in the left and right directions, and the vertical conveying device is moved to adjust the handling depth. The handling depth sensor device installed for this purpose is linked to the position adjustment of the reaping device,
It is an object of the present invention to provide a handling depth adjustment structure for a combine harvester configured to be movable to a position in a shallow handling direction or a deep handling direction position.

(E) Effect In this invention, the reaping device is configured to be able to move up and down with respect to the machine body and can be adjusted in position in the left and right directions, and a handling depth sensor device for adjusting the handling depth of grain culms is installed to adjust the position of the reaping device. In conjunction with this, the vertical conveyance device moves in the direction of shallow handling and deep handling, and in conjunction with the position adjustment of the reaping device, the grain culm transfer position between the vertical conveyance device and the feed chain of the machine body is adjusted. Even if there is a change in the handling depth, the handling depth sensor device moves the vertical conveyance device in the direction of shallow handling and deep handling, and automatically adjusts the handling depth of the vertical conveyance device, so that the vertical handling depth is always maintained. This is to maintain an appropriate grain culm delivery distance between the conveyance device and the feed chain.

Therefore, even if the reaping device moves up and down and adjusts its position in the left and right directions with respect to the machine body, the grain culm transfer position between the vertical conveyance device and the feed chain does not change in conjunction with this movement. Therefore, it is possible to always obtain an appropriate depth of handling of grain culms by the handling cylinder.

(F) Effect According to this invention, in a combine harvester configured to be able to adjust the position of the reaping device vertically and vertically as well as in the left and right directions, a handling depth sensor device is provided for adjusting the handling depth of the vertical conveying device. can be moved to the shallow and deep handling directions in conjunction with the position adjustment of the reaping device, so even if the reaping device is adjusted vertically and horizontally, there is no space between the vertical conveyor and the feed chain. The grain culm inheritance position of the grain does not change, and the operation can always be carried out at the appropriate depth, preventing problems such as inefficiency in threshing work due to deep handling or unhandled grain due to shallow handling. Make the most of your efforts.

(G) Example The example of the present invention will be explained in detail based on the drawings.
1 and 2 are a front perspective view and a front left side view of a combine harvester according to the present invention.

1 and 2, reference numeral 1 denotes a combine harvester body having a pair of left and right traveling crawlers 2, on which a threshing device 3 is mounted, and a handling trunk in a handling room of the threshing device 3. 4 are arranged with their axes along the direction of movement of the fuselage 1.

5 is a feed chain installed along the threshing device 3, the feed chain 5 is arranged along the left side in the direction of movement of the machine body 1, and the front end of the feed chain 5 is connected to the front plate 3' of the threshing device 3. also extends forward,
Further, the front end thereof is arranged so as to face the rear end of the vertical conveyance device 6 in the reaping pre-processing section a, which will be described later.

The reaping processing unit a is attached via a support arm 7 extending from the front part of the machine body 1, and a plurality of weeding bodies 9 are attached to the front end of the lower frame 8 of the support arm 7, A reaping device 10 is provided at the front surface of the pre-harvesting processing section, and a plurality of grain culm lifting devices 11 are provided at the front of the pre-reaping processing section, and at the rear thereof, a raking wheel 12, an upper conveyance device 13, and a vertical conveyance device 6 are provided. is installed.

In addition, FIG. 1 is a perspective view of the main parts, and 14 is a support pedestal on which the reaping pre-processing part a is attached to the machine body 1 so as to be pitchable and horizontally adjustable. The base side of the support arm 7 of the preprocessing section a is attached, and a pipe-shaped left and right adjustment arm 15 that is approximately L-shaped in plan view is attached, and the base end is attached to the middle part of the left and right adjustment arm 15, and the right and left adjustment arms 15 are attached. A pitching arm 16 is rotatably supported with respect to the adjusting arm 15.

The left-right adjustment arm 15 has a longitudinal direction extending in the left-right direction of the machine body 1, and a rotation shaft 17 to which the base end of the left-right adjustment arm 15 is attached is aligned along the front-rear direction of the machine body 1.

This rotating shaft 17 is connected to the feed chain 5 in front of the front plate 3' of the threshing device 3 of the machine body 1.
It is located inside the machine body 1 at the front end of the machine body 1 and at a position closer to the bottom of the terminal end of the vertical transport device 6, and is erected on the left side frame 19 attached to the front frame 18 at an appropriate distance in the longitudinal direction of the machine body. It is rotatably supported by a pair of front and rear left and right adjustment arm rotation bearings 20 and 21.

The left and right adjustment arms 15 have an appropriate length from the rotation shaft 17 and are oriented toward the front plate 3' of the threshing device 3 from the rotation shaft 17 at an inclination angle with respect to the rotation shaft 17. Further, it is provided in a shape that is bent toward the front side of the fuselage body at the same height position and extended in the left-right direction of the fuselage body 1 at a certain isolated position from the rotation shaft 17 .

In addition, this left and right adjusting arm 15 is connected to the front frame 18.
It is located above, and is disposed close to and parallel to the front plate 3' of the threshing device 3, and rotates about the rotation shaft 17 as a rotation fulcrum, so that the tip part can move up and down. It's getting old.

In addition, the left and right adjusting arm 15 has a pair of pitching arm rotation bearings 2 on the upper side thereof, spaced apart from each other appropriately in the left and right directions.
2 and 23 are provided in the longitudinal direction of the fuselage 1, and a rotation shaft 2 is integrally attached to the transmission case shaft 24 between the pitching arm rotation bearings 22 and 23.
5 is rotatably fixed.

The base end portion of the pitching arm 16 is attached to the transmission case shaft 24 at right angles to the longitudinal direction of the transmission case shaft.

As a result, the pitching arm 16 rotates around the rotation shaft 25 supported by the pitching arm rotation bearings 22 and 23.
It is configured so that it can rotate about the fulcrum and its tip can move up and down.

The power transmission mechanism that transmits power from the power section of the machine body 1 to the reaping pre-processing section a is transmitted to a pulley 28 by a rotating belt 27 of a winnowing shaft 26 of the threshing device 3, and the pulley 28 rotates the rotating shaft 17. It is provided near the supporting left and right adjustment arm rotation bearings 20 and 21 on the front side, and supports the support part 29 of the pulley 28 and the left and right adjustment arm 1.
5 via a stay 30.
A bendable and telescopic joint 32 is interposed between the two.

A belt 34 is stretched between the transmission shaft portion 31 and the input shaft 33 to the transmission case shaft 24 to which the base end of the pitching arm 16 is attached.
3 is driven, and this input shaft 3
3 to the grain culm lifting device 1 via a bevel gear 35 etc.
Power is transmitted to 1.

In addition, power is transmitted to the raking wheel 12 and the reaping device 10 via a bevel gear 36 other than the transmission case shaft 24, a shaft 37 in the pitching arm 16, etc., and via an interlocking mechanism 57 as shown in FIG. It is configured to drive the upper conveyance device 13 and the vertical conveyance device 6.

Reference numeral 38 denotes a left-right adjusting drive means for vertically moving the tip of the left-right adjusting arm 15 in order to maintain the reaping pre-processing section a in a substantially horizontal state regardless of the left-right tilting of the machine body 1; 18 and the left and right adjustment arms 15, and its piston rod 40 is pivotally connected to a bracket 41A projecting from the tip of the left and right adjustment arms 15 so as to be substantially vertical. The base end of the hydraulic cylinder 39 is pivotally attached to a bracket 41B of the front frame 18, etc.
The pre-reaping processing section a can be tilted in the left-right direction of the machine body 1.

Reference numeral 42 denotes a pitching drive means having a function of regulating the rotation of the pitching arm 16 when the left and right adjustment arm 15 rotates for left and right adjustment. The end portion is connected to a bracket 44 attached to the fuselage 1 such as the front frame 18 via a ball joint 45, and the piston rod 46 is connected to a bracket 47 attached to the lower surface of the pitching arm 16 by a ball joint 4.
It is connected via 8.

Further, the tip of the pitching arm 16 supports the lower part of the pre-reaping treatment section a, and the lower end of the pre-reaping treatment section a moves up and down as the pitching arm 16 is driven.

49 is a horizontal sensor attached to the left and right adjustment arm 15, and when it issues a detection signal to detect that the right side of the aircraft body 1 is tilted downward, it operates a hydraulic switching valve (not shown) in one direction to control the piston rod. 40
, and the right side of the reaping pretreatment section a is raised by rotating the left and right adjustment arm 15 for right and left adjustment.On the other hand, when the left side of the machine body 1 is tilted downward, it is horizontally adjusted. In response to a detection signal from the sensor 49, the hydraulic switching valve is operated in the opposite direction to that described above, and the piston rod 40 is operated so that the left and right adjusting arms 15 move the pre-reaping treatment section a upward on the left side.

In the combine harvester configured in this way, when the machine body 1 travels on a field scene G that is substantially horizontal in the left-right direction, the reaping device 10 and the left and right adjustment arms 15 in the pre-reaping processing section a are adjusted relative to the field scene G. However, when one of the traveling crawlers of the machine body 1 falls into a depression such as a groove in the field scene G, for example, the machine body 1 tilts downward to the right (or left) (i.e., the front of the machine (When the left side tilts downward when viewed from the
, the horizontal sensor 49 detects that the machine body 1 and the reaping pretreatment section a are tilted to the right, and the hydraulic cylinder 3
Pressure oil is sent to the side where the piston rod 40 of No. 9 is advanced (or retracted), and the tips of the left and right adjustment arms 15 are pushed up (or lowered) to correct the pre-reaping treatment section a to be approximately horizontal. .

Note that as the height above the ground increases (or decreases) with this correction operation, a separate cutting height sensor (not shown) is used to detect the height and drive the pitching arm 16. The pitching drive means 42 is activated to lower (or raise) the lower end of the pre-reaping treatment section a to correct the appropriate reaping height.

The purpose of this idea is to:
When one of the traveling crawlers of the machine body 1 falls into a groove or a recess in the field scene G and the machine body 1 tilts downward to the right or left side, the left-right adjustment arm 15 moves to the left-right adjustment drive means 38.
Rotates to the left or right about the rotation axis 17 via the
In order to correct the pre-harvesting treatment section a to be approximately horizontal, the relative position of the grain culm inheritance between the vertical conveyance device 6 and the feed chain 5 changes, and the depth of handling by the handling cylinder 4 changes, resulting in shallow handling. The aim is to prevent the disadvantage of being overly treated or treated too seriously.

That is, the pinching guide 50 of the upper conveying device 13
Furthermore, a handling depth sensor device 52 is attached to the pinning arm 51 that supports the pinning rod 6' of the vertical conveyance device 6, and the device 52 is attached to the arm of the grain culm detection switch below the sensor box 53. The sections 54 and 55 are arranged in the order of short culm sensing and long culm sensing from the side closer to the vertical conveyance device 6. Then, the grain culm detection switch is turned on and off by the grain culm reaching the feed chain 5 coming into contact with the arms 54 and 55 of the grain culm detection switch, or by not contacting the arms 54 and 55 of the grain culm detection switch. The vertical conveyance device 6 is connected to a hydraulic cylinder 56.
(See Figure 4).

In addition, the handling depth sensor device 52 is configured to be slidable left and right along the pinning arm 51 with respect to the left and right rotation of the left and right adjusting arm 15.
That is, a screw rod 57 is screwed into the sensor box 53, and the screw rod 53 is configured to slide along the gripping arm 51. Hydraulic motor 58
When the hydraulic oil is pressurized into the hydraulic cylinder 39 to rotate the left and right adjustment arm 15 left and right, the oil is also sent to the hydraulic motor 58 to operate the motor 58. At the very least, the screw rod 57 is rotated to cause the sensor box 53 to slide from side to side.

Furthermore, when the left and right adjustment arm 15 performs left and right adjustment to tilt the right side of the pre-harvesting treatment section a downward, the sensor box 53 is configured to move toward the shallow handling side, that is, toward the grain culm base. , the terminal end of the vertical conveyance device 6 performs shallow handling adjustment movement in the direction away from the starting end of the feed chain 5 (movement shown by the solid line in Fig. 5), and the right side of the reaping pretreatment section is tilted downward. This is to prevent the problem of excessive handling due to the left and right adjustment operation.On the other hand, when the left and right adjustment arm 15 is operated to adjust the left and right to tilt the right side of the pre-reaping processing section a upward, the sensor box 53 is configured to move toward the deep handling side, that is, toward the grain culm tip side, and therefore, the terminal end of the vertical conveyance device 6 can perform deep handling adjustment movement in the direction approaching the starting end of the feed chain 5. This is intended to prevent the problem of shallow handling due to the left-right adjustment operation in which the right side of the pre-reaping treatment section a is tilted upward (movement indicated by the broken line in FIG. 5).

In addition, the handling depth sensor device 52 is connected to the left and right adjusting arm 15.
It goes without saying that the structure for moving in response to the left-right adjustment operation is not limited to this embodiment, and that various structures can be considered, for example,
When moving the handling depth sensor device 52 using an electromagnet, or by directly extracting a signal from the horizontal sensor 49 that detects the inclination of the pre-reaping treatment section a, the movement of the handling depth sensor device 52 can be performed using an electromagnet. It is also possible to operate the electric motor by inputting a signal to the electric motor.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the structure of the reaping pre-processing section in the handling depth adjustment structure of the combine harvester of the present invention. Figure 2 is a side view of the proposed structure. FIG. 3 is a front view of the same. FIG. 4 is an explanatory diagram of the proposed structure. FIG. 5 is an operation explanatory diagram showing the main parts of the proposed structure. DESCRIPTION OF SYMBOLS 1... Machine body, 3... Threshing device, 6... Vertical conveyance device, 10... Reaping device, 52... Handling depth sensor device.

Claims (1)

[Scope of utility model registration request] For a machine body 1 having a threshing device 3, a reaping device 1
In a combine harvester in which the 0 position can be adjusted up and down as well as in the left and right directions, the vertical conveyance device 6
A combine harvester in which a handling depth sensor device 52 provided for adjusting the handling depth of the harvester can be moved to a shallow handling or deep handling direction position in conjunction with the position adjustment of the reaping device 10. Handling depth adjustment structure.