JPS58188725A - Travelling speed change device in farm working machine - Google Patents

Abstract

PURPOSE:To make it possible to carry out an emergency stop, by providing a pedal which may actuate a control lever which is set in a transmitting position so that the control lever is moved to a neutral position, thereby a speed change device may be changed to the neutral position by footing the pedal even when both hands are full. CONSTITUTION:Two step speed change high and low conditions by a traveling auxiliary speed change device are obtained by selectively pressing a tension pulley 15, 16 to a first or second transmission belt 13, 14 wound between an output pulley 9 and input pulleys 11, 12 having different large and small diameters. In this arrangement, there is provided such an arrangement that pulleys 15, 16 are actuated by manipulating a control lever 22 through a plate member 24, links 26, 27, tension arms 17, 18, etc. An arm 40 which is actuated by a pedal 37 through a rod 33 is linked to the other end of the arms 17, 18. The pedal 37 is performed when the control lever 22 is positioned in the shift position, and therefore, the tension arms 17, 18 are swung to their disconnection side so that the control lever 22 is returned to the neutral position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention involves winding one transmission belt with different transmission ratios around a driving shaft linked to an engine and a transmission shaft for a traveling device, and selectively connecting these transmission belts. At the same time as throwing the control lever 1 for the tension pulley to be operated,
The present invention relates to a transmission for traveling agricultural machinery, in which a mechanism for holding the operating lever in the neutral position is provided in such a way that the operating lever is automatically rotated when the operating lever is operated to the neutral position.

J:, The traveling transmission is also used as a main clutch, but conventionally only a manual lever was provided as an operating tool. For this reason, in the event that the Kf'F equipment is about to collide with the levee when turning the aircraft on a bank, etc., when turning the aircraft, for example, a rice transplanter, etc., in order to improve work efficiency. In general, the speed i! Because both hands are used for operations outside the yard, the hand that is operating the steering device or work equipment must be moved to the gear shift lever to switch off the gear and operate the gear, making it impossible to bring the aircraft to an emergency stop. I rarely have any flaws that I can't overcome.

In view of the above-mentioned circumstances, the present invention has been devised to make it possible to quickly switch off the transmission and bring the aircraft to an emergency stop even when both hands are used for operations other than the transmission position. Moreover, it is an object of the present invention to simplify the structure thereof, and to make it easy to maintain the stopped aircraft in its VC state.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

After #rJ (the engine +31 is mounted on the front part of the running vehicle body with the wheels tlj, Ill mounted on the axle, and the seedling device +41 is mounted on the rear part via the hydraulic cylinder (5)?/
This is a 4-row planting OT-capable riding machine with a driver's seat that can be raised and lowered freely, and a driver's seat located between the front and rear decks of the rock.

fiQki Efenjin +31, wheels! +1, +21
2 and 3 between the Lucia type main transmission device (not shown) 1 that opens the can and the interior minsion case (7).
As shown in the figure, an output pulley is attached to the output @ (8) of the engine U, and on the other hand, input turns of different sizes - IJ ul and α force are attached to the input shaft of the minsion case (7).
$1 and ij! across the output pulley (9) and input pulleys LJLI and IJ! S2 transmission belt H, +141
At the same time, both transmission belts tll, (first and 582 tension pumps θ5, which are made separately on 141), Q
→ is attached to the lateral rotation axis of the arm θη or HA (by IFS, the minsion case ()) so that it can swing freely down the hill, and a guzuru tension type driving sub-transmission device that is also used mainly for lunch is installed. It is composed.

The operating device of the sub-transmission device is constructed as follows.

That is, as shown in FIGS. 2 to 5, the tension arms αη, the tension springs (21a), (21
b) by tensioning the first and second tension pulleys: 51.
AE is always included! 1tiIK biasing. And (manual operation lever □□□
are pivotally connected so that they can swing back and forth, and the midway point in the longitudinal direction of this operating lever (B) is connected to the supporting point (end) *@ core (
Pl) At the same time, it is pivotally connected so that it can swing freely.
It is pivotally connected to the slotted hole (to), and the 10th board system is specified! One end of the sword is pivoted at the i point: the first and second points connected by J.
The link (to), the tension arm Qη, and the stake are pivotally connected via an elongated hole. In addition, the plate body (241VC1 marked with #) is provided with a concave groove having a predetermined width, and fixed bottle ends that abut against both side walls (b) and 4 of this concave groove protrude from the graget holder. The structure is such that it can be oscillated within a predetermined range.With this, when the operating lever is moved to the front end position of the guide groove of the lever guide, as shown in No. 6, Through the second link (goods), the second tension pulley is moved from the second transmission belt α to S against the biasing force of the spring (21b).
However, the first transmission pulley (IQ) was operated by entering the first transfer belt (!4) by the biasing force of the support ring (21a) through the long hole, and the high-speed platform was damaged. , when the operating lever (2) is operated at the rear end position tL of the lever guide guide groove, the first tension pulley 059 is By entering the 2-dension pulley river and doing M7kff!, a low arresting lip was obtained, and when operating the operating lever (-1) at the intermediate position HIC after n of the lever guide guide groove, as shown in Fig. 6 V→ Like, Wl
Both the tension pulleys US and A4 are spaced apart from the first and second transmission belts by +1 m, 1141, thereby obtaining a transmission cut-off.

Furthermore, as shown in the fourth and fifth causes, the operation lever @
On the #A side beyond the connecting part to the bang plate @@, it can be bent around the axis (P2) that is almost perpendicular to the swing #7 m '2; for operating the tension pulleys Vl@, ul. At the same time, the part corresponding to the optical layer side from the bent part of the operating lever is locked, and a notch as an example of a mechanism for holding the neutral position tN [made by fjk <-@t@TJ (2) is formed into a lever guide. and,! #The spring (to) that swings and urges the tip end of the operating lever in the direction of entering the man's large mouth is l
Simply attach it to the bent part of the waist and operate the operating lever to the neutral position IN1, and the notch (2) will move automatically.
It operates and is maintained in the transmission cut-off state and is stored as shown in the figure.

In addition, as shown in Figures 3 to 5, the elongated hole-shaped second part joint connected to the tip of the rondeau is inserted into the first and second links, and the first and second links are inserted into the first and second links. Second link (
), @ the springs (21a), (21
b) In order to install the tension arm aη, both links, @ and plate-
The fund 1 and the operation lever (B) are linked via the
Attach the support shaft (19￥C) so that it can swing freely in a prone position that is biased to a more neutral position, and extend the tQ pedal (to) and the rondo (to) from the mounting boss on the pedal surface for Buntsumugi. In addition, when the lever (to) on M7 is in the above-mentioned transmission position (6) or (2), as the pedal is depressed, it is moved to the engaged position. A certain tension arm (one arm or one arm is swung to fJll, and the link αη or α opening on the entry side is inserted into its elongated hole and pushed up by the tension arm pin, so that the operating lever ■ is in the neutral position. The link elongated hole (2) is set so that the long hole (2) of the link can be returned to the position fitful.In normal times, the long hole (2) of the rond hole does not displace the pedal surface from the neutral position, and both tension pulleys (4) @
can be selectively engaged and closed using the operation lever device, and can also be operated by simply fully depressing the pedal. As shown in Figure 7, the operating lever device is forcibly operated to the neutral position (al, Nl and held by the notch @), and the transmission to the wheel (11, (!+) can be stopped and the VC is included to maintain the pleasure of stopping.

In the seedling planting device t4i, as shown in FIG. 8 and FIG.
The front end surface of 42 on the floor is the seedling platform sliding guide rail <U to P
The side frame part (41a) of the seedling stand (41) is inserted between the floor and the guide rail to prevent H1 from coming into contact with each other.
) and all the storage compartment partition frames i (41b) K Seedling protection plate bodies configured to be locked individually are detachably provided on the seedling stand. In other words, when working near the shore, the seedling planting arm +fC corresponding to the shore side
When disengaging the clutch to disable planting by that arm,! 1'Q board (equipped with a trowel, to prevent the bed soil from getting caught on the edge forming the seedling outlet (la) of the O guide rail and being cut or damaged.
In addition, the plate (44) can be attached without transferring the fungus 1- to the H end side of the seedling stand (company), and the measures to prevent damage to the seedlings and D described in -〇 can be easily carried out. Be considerate.

The winding axis of the transmission belt is the two rotating shafts connected to the engine output shaft, or the input of the transmission case.
However, the engine output shaft 1&) is referred to as the single-acting shaft (8) connected to the engine'/'C, and the transmission case input shaft tXQl is referred to as the transmission shaft for the traveling gear. It is called axis UU.

The above-mentioned driving transmission! l can be applied to various types of child farming such as combine harvesters.

In summary, the present invention has the following advantages: In the traveling transformation position of the transfer machine, the operating lever (B) is moved to the arrow-cut position (
5) It features a pedal (9) that can be operated in the neutral position @N when shifting to U-), so even if both hands are used for operations other than the transmission. Even if
Both transmission belts 131 and t141 can now be quickly cut and operated by foot, making it possible to stop the aircraft in an emergency. Moreover, since the transmission is operated by switching the transmission itself, there is no need to provide a separate clutch for emergency stopping, and the structure can be easily configured.Furthermore, f! Since the 4 levers and the 4 are operated in a neutral manner, if the aircraft and vi suddenly stop, the holding mechanism 1311
Since the aircraft furls on its own, it is possible to maintain the stopped aircraft in its prone position by simply pressing the pedals, and after the aircraft has stopped, the aircraft is hired by the flight control department to inspect the aircraft. In such cases, it is now possible to move on to the task quickly.

[Brief explanation of the drawing]

The drawing shows the transmission system for mobile agricultural machinery and υ stopping according to the present invention.
An example is shown, and the first reason is a side view of Noritsuki Taboki, Fig. 2 is a front blade of the transmission mounting part, Fig. 8 is a side view of the transmission, and Fig. 4 is a perspective view of the operating lever mounting part. Figure 5 is a front view of the connection #J mechanism of the operating lever and tension arm, Figure 6 1a) or c) is a side view illustrating the gear shifting state, and Figure 7 shows the pedal depression state. 8 is a perspective view of the plate for protecting the seedbed, FIG. 9 is a plan view showing the installed state of the plate for protecting the seedbed, and FIG. be. (3)...Engine, (8)...Tadakakan, Kagu...--Can opener shaft for traveling equipment, (13, 341
...Transmission belt, (+19, river...
・Tension arm, □□□・・・・・・Mission”WL-/
<-13JJ...Ho-7? Organization, country...
・Pedal, flat)・・・Neutral device, (6), (L)
...Can opener position. Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Scope of Claims] Five power transmission pels 1-01 with different transmission ratios are connected to the driving shaft (8) linked to the engine ill K and the transmission axle load for the traveling device. The tension pulley that winds the α curve and selectively enters and operates these transmission belt α fields, 041, and the operating lever for αIIK! 2 and [, #J
For traveling of a mobile agricultural machine, a mechanism (9) for holding the operation lever 22 in the neutral position N is suddenly provided in such a way that the operation lever (2) is not operated to the neutral position 11tNl. This transmission is a transmission for moving a mobile agricultural machine, characterized in that it is provided with a pedal (□□□) that can be operated to a neutral position when the operating lever is in the forward position (1tIEJ, Ll).