JPS6227462Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention has two types of running gear, one for the transmission system to the traveling device and the other for the transmission system to the reaping part, in the transmission case disposed below the side of the driver's seat. In addition to intervening a transmission and a reaping transmission, an operation box is provided on the upper part of the transmission case, and a control tower is provided in front of the driver's seat, and the space under the driver's feet is divided between the control tower and the operation box. This relates to the speed change operation structure of a combine harvester surrounded by a seat.

In this type of conventional combine harvester speed change operation structure, two operation levers for the two types of traveling transmissions and one operation lever for the reaping transmission are arranged side by side and both are connected to the top plate of the operation box. However, in this case, the width of the operation box tends to become very large in order to secure a space for gripping the lever between adjacent operation levers, and the width of the operation box at the outermost side This forces the user to use force in the operating position for the lever, and furthermore, since the operating lever for the reaping system, which is rarely used, is located near the operating lever for the driving system, which is operated relatively frequently, the operator is confused about the gear shift operation for the driving system. There were problems that could easily lead to incorrect operation.

In view of the above-mentioned circumstances, an object of the present invention is to make the operation box more compact and improve operability by rationally improving the arrangement of the operation levers of the traveling system and the reaping system. In the above-mentioned device, the operating levers for the two types of traveling transmissions protrude upward from the top plate of the operation box, and the operating levers for the reaping transmission are located near the feet of the operator. It is characterized in that it protrudes from the side panel of the operation box toward the driver's seat side in a horizontal position.

In other words, the two types of drive system control levers that are frequently used are placed above the control box, which is easiest to operate from the driver's seat, and the less frequently used reaping system control levers are placed separately under the driver's seat near the footwells. As a result, while sufficient space is secured between each lowering operation lever for gripping the lever, the width of the operation box can be made as compact as possible, and each lever can be operated easily. It can be arranged so that it can be operated easily while sitting in the seat, and since the drive system gear shift control lever and the reaping system control lever are sufficiently isolated, the mowing system control lever can be used for frequently changing gear operations. Therefore, it is now possible to perform the desired gear change operation reliably, accurately, and easily without causing any confusion or erroneous operation.

Hereinafter, an embodiment of the present invention will be described based on the drawings. As shown in FIG. A reaping section 4 that lifts and reaps grain culms and then transports them to the threshing device 2 is connected and supported so as to be movable up and down. A support frame 6 for the seat 5 and a handle frame 7 constituting a control tower are erected, an engine 8 is disposed within the driver's seat support frame 6, and on the lateral inner side of the driver's seat 5, A mission case 9 and an operation box 10 are arranged such that the operation box 10 is located above the mission case 9. Therefore, the driver's foot space is surrounded by the control tower 7, the control box 10, and the driver's seat 5.

Further, as shown in FIGS. 2 to 4, the drive shaft 11 of the engine 8, the input shaft 12 of the mission case 9, and the input shaft 13 of the threshing device 2 are aligned or substantially in a straight line when viewed from the side. position,
Belt tension type clutches 16, 17 and 18 are provided between the drive shaft 11 and the input shafts 12 and 13 and between the output shaft 14 of the transmission case 9 and the input shaft 15 of the reaping section 4, respectively. In addition, within the transmission case 9, the transmission system to the traveling devices 1 and 1 and the transmission system to the reaping section 4 are configured such that the machine is in a forward state F and in two reverse stages.
A main transmission 19 that can be changed to R ₁ and R ₂ , a sub-transmission 20 that can change the forward speed of the aircraft to 6 stages (F ₁ to F ₆ ), and a 2-speed transmission that can change the forward speed of the aircraft to 2 stages (H, L). A reaping transmission 21 is interposed.

Thus, the main transmission 19 and the auxiliary transmission 2
The operating levers 22 and 23 for the reaping transmission 21 protrude upward through linear and double H-shaped operating guide grooves 24 and 25 formed on the top plate 10A of the operating box 10, and the operating lever 26 for the reaping transmission 21 , protrudes sideways toward the driver's seat 5 through a linear operation guide groove 27 formed in the side plate 10B of the operation box 10 located near the feet.

Also, rods 28, 28 are attached to the tension arm 18A of the reaping section clutch 18 and the tension arm 17A of the threshing device clutch 17, respectively.
The operating levers 31 and 32, which are connected via the springs 29 and 29 and the levers 30 and 30, protrude upward through a notch 33 formed in the rear part of the top plate 10A of the operating box 10, and the handle frame 7. A pedal 34 pivotally connected to a nearby portion of the vehicle body frame 3 is connected to the tension arm 16A of the main clutch 16 of the traveling system and the reaping system, and the main shift operating lever 22 is attached to the top plate 10A. restraining device 3 that restrains the operation from the low-speed reverse operation position R ₁ to the high-speed reverse operation position R ₂
5 is provided so as to be switchable and fixed between a check position and a check release position where it is retired from the operation guide groove 24.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the speed change operation structure for a combine harvester according to the present invention, and FIG. 1 is an overall side view of the combine, FIG. 2 is an enlarged side view of the main parts, FIG. 3 is a plan view of the main parts, and FIG. The figure is a longitudinal cross-sectional rear view of the main parts. 1... Traveling device, 5... Driver's seat, 6... Reaping section, 7... Pilot tower, 9... Mission case, 1
0...Operation box, 10A...Top plate, 10B
... Side plate, 19, 20 ... Travel transmission, 21
... Reaping transmission, 22, 23, 26 ... Operation lever.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In the transmission case 9 disposed below the side of the driver's seat 5, two types of power transmission systems are installed in the transmission system to the traveling device 1 and the transmission system to the reaping section 4, respectively. In addition, an operation box 10 is provided on the upper part of the transmission case 9, and a control tower 7 is provided in front of the driver's seat 5, and the driver's foot space is In the combine speed change operation structure in which the control tower 7, the operation box 10, and the driver's seat 5 surround the operation levers 22 and 23 for the two types of traveling transmissions 19 and 20, the operation levers 22 and 23 are connected to the operation box 1.
An operating lever 2 for the reaping transmission 4 protrudes upward from the top plate 10A of the
6 to the operation box 1 located near the feet.
A speed change operation structure for a combine harvester, characterized in that a side plate 10B of the combine harvester protrudes from a side plate 10B portion of the 0 toward the driver's seat 5 side in a horizontal position. 2. Utility model registration according to claim 1, wherein the two types of traveling transmissions 19 and 20 are a main transmission that can change the aircraft forward or backward movement and a sub-transmission that can change the aircraft forward speed into multiple stages. Combine speed control structure.