JP2588504Y2 - Slow-speed operation control structure for vehicle speed tuning type combine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle speed tuning type combine which makes it possible to make the operation speed of the operating lever as small as possible and to smoothly carry over the operation from the reaping unit to the threshing unit even at the time of low speed operation. It relates to a low-speed operation control structure.

[0002]

2. Description of the Related Art Conventionally, in a harvesting section of a vehicle speed synchronization type combine, a low speed operation control is performed to detach a paddy bag full of paddy from a paddy outlet and attach an empty paddy bag to the paddy outlet. ing. Since the vehicle speed of the combine can be reduced by this low-speed operation control, the driver can once get out of the combine and perform the work of exchanging the above-mentioned paddy bags, and thereafter, continue riding the combine again. You can do it.

More specifically, FIG. 4 (a) shows a conventional operation lever structure used for a low-speed operation control.
The HST (Hydraulic Drive Transmission: Lever operation changes the discharge amount of the hydraulic pump and controls the amount and direction of oil to turn the hydraulic motor to adjust the speed and forward / backward movement of the combine. Can be connected to each other. Also, the operation lever 50
Is a guide plate disposed above the shifting pivot 51.
The operation lever 50 is moved through the inverted S-shaped lever guide groove 53 provided in the lever 52 in the front-rear direction along the guide groove 53 so as to be in the neutral position as shown in FIG. (N), the retracted position (R) ahead of it, and the forward position backward.
(F).

[0004] Further, as shown in FIG.
(N) is provided as a starting point, a slow speed range S is provided at a constant width toward the forward position (F), and a so-called working range W
Will be provided.

[0005] By moving the operation lever 50 to the above-described range S, the operation can be performed at a low speed, and the operation of replacing paddy bags and the like can be performed.

In FIG. 4 (a), δ indicates a slow speed operation angle, and ε indicates an entire operation angle.

[0007]

However, the conventional low-speed operation control in the above-described vehicle speed tuning type combine still has the following problems to be solved.

That is, as shown in FIG.
Since the base end of 50 is directly connected to the shifting pivot 51, the movement amount of the operating lever 50 and the vehicle speed of the combine become linear as shown in FIG. 4B (FIG. 4B). A) in or
Even in the case of non-linearity, it is concave (B in FIG. 4 (c)).

Therefore, as shown in FIG. 4 (c), the slow speed range S (slow speed operation angle δ) with respect to the working range W becomes large,
Causes malfunction. In other words, the drop between the transport speed of the harvesting unit synchronized with the vehicle speed and the transport speed of the threshing unit that maintains a constant speed increases, and in the transfer unit from the harvesting unit to the threshing unit, transport disturbance occurs, and clogging occurs. Will be caused.

When the guide plate 52 is inclined as shown by the imaginary line in FIG. 4 (a), it appears that the range of the slow speed is reduced. In this case, however, the working range is narrowed.
It becomes difficult to control the vehicle speed during normal work.

An object of the present invention is to provide a low-speed operation control structure in a vehicle speed tuning type combine which can solve the above-mentioned problems.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a ratio α / γ of a low-speed operation angle α to an entire operation angle γ of an operation lever for determining a vehicle speed of a combine, and a change in the operation angle of the operation lever. The relationship between the ratio β / θ of the low-speed operation angle β to the total rotation angle θ of the shifting rotary shaft linked to the changing vehicle drive device is defined as α / γ <β / θ. The present invention relates to a low-speed operation control structure in a vehicle speed tuning type combine.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A control system for controlling a low-speed operation in a vehicle speed tuning type combine according to the present invention will be described with reference to FIGS.
This will be specifically described with reference to FIG.

First, the configuration of the vehicle speed tuning type combine 10 will be briefly described with reference to FIGS.

In FIG. 1 and FIG. 2, the vehicle speed tuning type combine 10 has a reaper 11 in front of a combine main body a, and a crawler running part 12 in a lower side.

Further, a threshing unit 13 and a wind selection unit 14 are respectively housed and disposed on the front left side of the combine body a, and a straw processing unit 15 is housed and arranged at the rear. The operation unit 17 is provided on the right side of the front part.

The operating section 17 is provided with an operating lever 18, and by operating the operating lever 18,
While traveling in the field by driving the crawler running unit 12, the culm of the field cut by the reaping unit 11 is threshed by the threshing unit 13, the kernels are sorted by the wind selection unit 14, and the straw is treated by straw. It is processed by the part 15 and released to the outside of the combine body a.

Further, in the vehicle speed tuning type combine 10 having such a configuration, the transport speed of the reaping unit 11 can be changed in synchronization with the vehicle speed of the combine 10 and a very low speed operation can be performed.

In the present invention, in the above-described vehicle speed tuning type combine 10, as described below, the low-speed range of the operation lever 18 is made as small as possible, and even during the low-speed operation, the operation from the reaping section to the threshing section is performed. It is characterized in that succession can be performed smoothly.

First, the basic mounting structure of the operating lever 18 in the operating unit 17 will be described. The base end of the operating lever 18 is formed in an inverted S-shape provided on a guide plate 20 disposed horizontally on the operating unit 17. It extends downward through the lever guide groove 21, and has an extended end integrally connected to the intermediate pivot shaft 22.

When the operation lever 18 is rotated in the front-rear direction around the rotation pivot 22, the operation lever 18 is moved to the guide groove 21.
Along the front and rear direction, and as shown in FIG.
A neutral position (N), a retreat position (R) ahead of the neutral position (N), and a forward position (F) behind the neutral position (N) can be selectively set.

Further, as shown in FIG.
A slow speed region S is provided at a constant width from the start point (N) toward the forward position (F), and a so-called work region W is provided in front thereof.

Then, by moving the operation lever 18 to the above-described range S, the operation can be performed at a low speed, and the operation of replacing the paddy bags can be performed.

In this embodiment, however, the operation lever 18 is attached to the rotation shaft 22 that rotates integrally with the operation lever 18.
The base end of the horizontal arm 23 is integrally connected in a direction substantially perpendicular to the axis of the horizontal arm 23, and the distal end of the horizontal arm 23 moves up and down around the rotation pivot 22 by the front and rear movement of the operation lever 18. Will do.

A long hole 24 extending in the longitudinal direction is provided at the tip of the horizontal arm 23. Further, at a lower position separated from the rotation pivot 22 in the direction of extension of the horizontal arm 23, a speed-change rotation pivot 25 directly connected to HST or the like is disposed, and a base end is integrally formed with the rotation pivot 25. A base end of the inclined arm 26 connected to the horizontal arm 23 is connected, and a slide pin 27 slidably fitted in the long hole 24 provided in the horizontal arm 23 is attached to a distal end of the inclined arm 26. ing.

Next, the operation of the operation lever 18 of the vehicle speed tuning type combine 10 having the above configuration will be described.

Now, as shown in FIG.
When 18 is moved backward by the slight speed operation angle α, the pivot 22
And the horizontal arm 23 rotate at the same angle α. With this rotation, the inclined arm 26 also rotates around the speed change pivot 25 by the angle β.

Thus, the rotation angle β is determined by the distance L ₂ between the sliding pin 27 and the center of the shifting pivot 25 and the distance L ₁ between the center of the rotating pivot 22 and the sliding pin 27. Although will be determined by the relationship, in conjunction with the rotation of the arms 23 and 26, with respect to the distance L ₂ is not changed, the distance L ₁ is shorter. Therefore, the turning angle β rapidly increases with respect to the low-speed operation angle α, and the vehicle speed changes while drawing a locus C convex upward as shown in FIG.

In other words, in this embodiment, the ratio α / γ of the low-speed operation angle α to the total operation angle γ of the operation lever 11 that determines the vehicle speed of the vehicle speed tuning type combine 10 and the operation angle of the operation lever 11 The relation between α / γ and the ratio β / θ of the low-speed operation angle β to the total rotation angle θ of the shift rotary shaft 25 for shifting associated with the vehicle drive device that changes in conjunction with the change is represented by α / γ. <Β / θ.

Therefore, the desired set fine speed (for example, 0.2 m /
In order to obtain s), it is only necessary to move the operation lever 11 by a slight slight operation angle α.

As described above, in this embodiment, the wide working area W
While securing the speed, it is possible to narrow the slow speed range S, so that there is little difference in the grain stalk transport speed between the reaping unit 11 and the threshing unit 13, and the grain stalk transport performance is improved even during paddy bag exchange work etc. can do.

Further, since the slow speed range can be narrowed, a stall phenomenon (a state in which power is not transmitted due to oil leak of the HST and the running is stopped) in the HST or the T / M can be effectively prevented.

In the above-described embodiment, the ratio α / γ of the low-speed operation angle α to the total operation angle γ of the operation lever 11 that determines the vehicle speed of the vehicle speed tuning type combine 10 and the operation angle of the operation lever 11 HS that changes in conjunction with change
The relationship between the ratio β / θ of the low-speed operation angle β to the total rotation angle θ of the transmission rotation pivot 25 directly connected to T or the like is represented by α /
In order to satisfy γ <β / θ, the horizontal arm 23 and the tilt arm 26
However, the slow-speed operation control structure applicable to the present invention is not limited to such a mechanical structure, and for example, a hydraulic control structure or an electric control structure may be used. Of course.

[0034]

[Effect] As described above, in the present invention, the ratio α / γ of the fine speed operation angle α to the total operation angle γ of the operation lever that determines the vehicle speed of the vehicle speed tuning type combiner and the change in the operation angle of the operation lever are linked. Α / γ <β / θ between the ratio β / θ of the low-speed operation angle β to the total rotation angle θ of the shift rotary shaft linked to the vehicle drive device that changes
It is characterized by the following.

With this configuration, the low-speed range can be narrowed while securing a wide working range, so that there is little difference in grain stalk transport speed between the cutting section and the threshing section. It is possible to improve the conveying performance of the grain culm and effectively prevent the stall phenomenon in HST and T / M.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle speed tuning type combine according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an explanatory diagram of a slow-speed operation control structure and control mode of the combine.

FIG. 4 is an explanatory diagram of a conventional slow-speed operation control structure and control mode.

[Explanation of symbols]

 α Slow operation angle β Slow rotation angle γ Full operation angle θ Full rotation angle 10 Vehicle speed tuning system combine 18 Operation lever 25 Shifting rotation axis

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Seizou Inagaki 1-32 Chayamachi, Kita-ku, Osaka-shi, Osaka Yanmar Agricultural Machinery Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) A01D 69/00 302 A01D 69/00 303

Claims (1)

(57) [Scope of request for utility model registration] An operating lever (1) for determining a vehicle speed of a combine.
8) The ratio α / γ of the slow operation angle α to the total operation angle γ
And the ratio β / θ of the low-speed operation angle β to the total rotation angle θ of the transmission rotation pivot shaft (25) linked to the vehicle drive device that changes in conjunction with the change in the operation angle of the operation lever (18). A slow speed operation control structure in a vehicle speed tuning type combine, wherein α / γ <β / θ.