KR200233771Y1 - a weeder for riding - Google Patents

Abstract

In a passenger weeding vehicle equipped with a traveling hydraulic continuously variable transmission, the supporting structure of the transmission mechanism to the front wheel or the rear wheel is simply constituted.

The hydraulic block 9 is connected to one side of the mission case 5, the hydraulic continuously variable transmission 6 is connected to the outside of the hydraulic block 9, and the power from the engine is transmitted through the hydraulic continuously variable transmission 6. It is configured to transmit to the electric system in the mission case (5). On the outer side of the hydraulic block 9, the electric mechanism 8 is connected to a part different from the hydraulic continuously variable transmission 6, and the power branched from the electric system in the mission case 5 passes through the hydraulic block 9. It transfers from the one transmission shaft 17 to the transmission mechanism 8.

Description

Weeder for riding {a weeder for riding}

The present invention relates to a riding type weeding vehicle equipped with a hydraulic continuously variable transmission for driving, and more particularly, to the electric system structure of the front wheel and the rear wheel.

In a riding type mowing vehicle equipped with a traveling hydraulic continuously variable transmission device, there are ones having the following configuration. The hydraulic block is connected to one side of the mission case, and the hydraulic continuously variable transmission is connected to the outside of the side opposite to the mission case to the hydraulic block. Accordingly, power from the engine is transmitted from the hydraulic continuously variable transmission to the transmission system in the mission case and to one of the front wheels or the rear wheels so that the power branched from the transmission system in the mission case is transmitted to the other direction of the front wheel or the rear wheel. .

As described above, in a passenger weeding vehicle, in the case of transmitting the power branched from the electric system in the mission case to another direction of the front wheel or the rear wheel, an electric mechanism (clutch or transmission, etc.) is used for the electric system of this power. There is something to equip. The present invention aims to simplify the arrangement and support structure of a transmission mechanism in a riding type weeding vehicle equipped with a traveling hydraulic continuously variable transmission.

When equipped with a hydraulic continuously variable transmission for traveling, there are many cases in which a hydraulic block incorporating a flow path connecting the hydraulic pump on the input side and the hydraulic motor on the output side is provided in the hydraulic continuously variable transmission. Thereby, a transmission mechanism is supported by the hydraulic block of the existing hydraulic continuously variable transmission, and the power branched from the electric system in a mission case is transmitted through the transmission mechanism from the transmission shaft which penetrated the hydraulic block. Therefore, according to the characteristic of this invention, it is not necessary to separately provide the opening part, the connection mechanism, etc. for supporting a transmission mechanism in a mission case.

Hydraulic continuously variable transmissions generally have relatively high vibrations. Then, as the features of claim 1 are connected to the hydraulic block directly connected to the hydraulic continuously variable transmission, the weight and volume of the hydraulic continuously variable transmission and the hydraulic block are increased, so that the hydraulic continuously variable transmission Vibration is suppressed.

1 is an overall side view of a riding mower

2 is a side view showing an electric system of a riding type weeding device

3 is a side view showing an outline of an electric system of a mission case

4 is a longitudinal side view of the mission case

5 is a longitudinal side view near the dual one-way clutch

6 is a plan view near the driving unit

* Description of the symbols for the main parts of the drawings *

1 ... front wheel

2 ... rear wheel

4 ... engine

5 ... Mission Case

6 ... hydraulic continuously variable transmission

8 ... power tools

9 ... hydraulic block

12 ... output shaft of hydraulic continuously variable transmission

17 ... power shaft

As shown in FIG. 1, all of the vehicle bodies supported by a pair of left and right front wheels (1, steering control impossible) and a pair of left and right rear wheels (2, steering operation control) are collected through a lift arm 36 (3). ) Is supported by a lifting operation freedom, and a riding type weeding device which is an example of a riding type weeding vehicle is constituted. As shown in FIG. 2 and FIG. 1, the engine 4 is disposed at the rear of the vehicle body, and the mission case 5 supporting the front wheels 1 is disposed on all of the vehicle bodies. The hydraulic continuously variable transmission 6 is connected to the rear part. Accordingly, power from the engine 4 is transmitted to the hydraulic continuously variable transmission 6 via the electric shaft 7, and shifted in the hydraulic continuously variable transmission 6 and the mission case 5 to the front wheel 1. Delivered. Power diverged just before the front wheel 1 is transmitted from the dual one-way clutch 8 to the rear wheel 2 via the transmission shaft 18.

Next, a structure of the vicinity of the mission case 5 will be described. As shown in FIG. 3 and FIG. 4, the hydraulic block 9 of the hydraulic continuously variable transmission 6 is connected to the part of the gas rear side of the mission case 5, and the gas rear side of the hydraulic block 9 is connected. The motorized casing 10 is connected to the hydraulic continuously variable transmission 6 and the rear wheel 2 on the surface thereof. The power in the engine 4 is transmitted to the input shaft 11 of the hydraulic continuously variable transmission 6 via the transmission shaft 7 (see FIG. 2), so that the power in the hydraulic continuously variable transmission 6 is hydraulic. It is transmitted to the differential mechanism mechanism 15 of the front wheel 1 through the output shaft 12, the sub transmission 13, and the pinion shaft 14 which penetrated the block 9. As shown in FIG.

The power of the pinion shaft 14 is transmitted to the dual one-way clutch 8 in the transmission case 10 via the transmission gear 16 and the transmission shaft 17 to output the shaft 26 of the dual one-way clutch 8. In, it is transmitted to the rear wheel 2 via the transmission shaft 18 shown in FIG. The sub transmission device 13 is a gear shift type, and slides the shift gear 19 in which the pinion shaft 14 is freely slidably operated in the spline structure, and is connected to the high speed gear 20 or the low speed gear 21. In this way, the shift operation can be performed in a high and low two-stage. The power of the input shaft 11 of the hydraulic continuously variable transmission 6 is transmitted to the PTO shaft 24 through the electric gear 22 and the PTO clutch 23, so that power is transmitted through the PTO shaft 24. It is delivered to the collection 3 shown in the figure.

As shown in FIG. 4, the hydraulic block 9 is a flow path (not shown) in which the hydraulic pump (not shown) of the input side and the hydraulic motor (not shown) of the output side are connected in the hydraulic continuously variable transmission device 6. And the inside of the hydraulic continuously variable transmission 6 and the mission case 5 are shut off. As shown in FIG. 5, the lower part of the hydraulic block 9 extends to the lower part, and the transmission case 10 is connected to this extension part, and the edge part of the PTO shaft 24 is bearing-supported. In this case, through the opening 9a formed in the hydraulic block 9, the inside of the transmission case 10 and the inside of the mission case 5 communicate with each other, and the lubricating oil is mutually connected, and the coupling of the hydraulic block 9 is carried out. The transmission shaft 17 penetrates and is supported by 9b. And the switching valve 25 which performs the electric and electric shut-off operation of the PTO clutch 23 is provided in the transmission case 10. As shown in FIG.

Next, the dual one-way clutch 8 will be described. As shown in FIG. 5, the transmission shaft 17 on the side of the mission case 5 and the output shaft 26 of the dual one-way clutch 8 are freely supported on the coaxial shaft, and have a large convex portion. 1 The drive cam 27 and the case 28 are fixed to the transmission shaft 17. The center cam 29 which consists of the big convex part and the small convex part separated from each other is made to be free to rotate to the 1st drive cam 27 within a predetermined angle range. In the case 28, a tribune cam 32 having a small convex portion is fixed to the output shaft 26.

The ring member 30 is freely rotated outside the case 28, the ring member 30 is coupled to the convex portion 10a formed on the inner surface of the transmission case 10, and the ring member 30 is surrounded. have. The ring-shaped brake plate 31 is fixed to the arm 29a extending from the center cam 29 to the outer side of the case 28 so that the brake plate 31 contacts the ring member 30 and the center cam ( Light braking can be applied to 29, and a spring 33 is connected to the center cam 29 on the first drive cam 27 side.

According to the above structure, when the first drive cam 27 is driven forward or reversely by the power of the electric shaft 17 when going straight, the large convex portions of the first drive cam 27 and the center cam 29 are applied. As a result, the center cam 29 is driven in a straight or reverse direction to be extruded in the leftward direction of the ground to be coupled to the second drive cam 32. As a result, the power of the forward or reverse movement is transmitted from the second drive cam 32 to the rear wheel 2.

Next, when the rear wheel 2 is driven straight or reversed from the ground at a higher speed than the front wheel 1 due to the difference in the turning radius during the vehicle body turning, the small size of the second drive cam 32 and the center cam 29 is reduced. By the action of the convex portion, the center cam 29 is pushed back to the right side of the ground and leaves from the second drive cam 32. Thereby, the power of the straight or reverse rotation to the rear wheel 2 is cut off.

As shown in FIG. 5, the operation rod 34 is integrally rotated to the first drive cam 27 and the slide is freely supported along the transmission shaft 17, and the operation of sliding the operation rod 34 is performed. The fork 35 is provided. In this way, the operation rod 34 is pushed to the left side of the ground by the operation fork 35 so that the center cam 29 is forcibly coupled to the second drive cam 32 by the operation rod 34. Mainly, power is always transmitted to the rear wheel 2 regardless of when the vehicle body goes straight and when it turns.

As shown in FIG. 6, in the vehicle body driving portion, a shift pedal 38, a brake pedal 39, and a brake pedal 39 of the hydraulic continuously variable transmission 6 are provided on the upper transverse side of the steering wheel 37. A lock pedal 40 is provided for entering deep and holding and releasing to a braking position. On the upper transverse side of the driver's seat 41, the lifting river 42 of the lift arm 36 (see FIG. 1), the sub-shift river 43 of the sub transmission 13 (see FIG. 4), and the switching valve A PTO reversal 44 is provided which switches 25 to operate the electric and electric shut-off of the PTO clutch 23, and operates the operating fork 35 shown in FIG. The lock river 45 which switches the dual one-way clutch 8 to the state in which power is always transmitted to the rear wheel 2 is provided on the left side of the driver's seat 41.

As shown in FIG. 1, when the present invention is applied to a passenger weeding vehicle other than a passenger weeding device, the engine case is arranged at the front of the vehicle body and the rear case 2 supports the rear wheel 2 at the rear of the vehicle body. You may arrange | position 5) and connect the hydraulic continuously variable transmission 6 to the part of the body front side of the mission case 5. As shown in FIG. When the mission case 5 is arrange | positioned at the rear of a vehicle body as mentioned above, you may provide the front-wheel-shifting apparatus (not shown) in the transmission case 10 as a transmission mechanism instead of the dual one-way clutch 8.

As described above, in a passenger-type mowing vehicle equipped with a traveling hydraulic continuously variable transmission, an opening or a connection member exclusively for supporting the transmission mechanism by connecting a transmission mechanism to the front wheel or the rear wheel to an existing hydraulic block. Since there is no need to provide a new back to the mission case, it is advantageous in terms of simplifying the structure and reducing the production cost. Since the vibration of the hydraulic continuously variable transmission is also suppressed, the riding comfort of the riding type weeding vehicle is also good.

Claims (1)

In the hydraulic block 9 which connects the hydraulic block 9 in which the flow path is installed to one side of the traveling mission case 5, the hydraulic continuously variable transmission 6 is connected to the outer side opposite to the mission case 5. And transmits power from the engine 4 to the hydraulic continuously variable transmission 6, and at the output shaft 12 of the hydraulic continuously variable transmission 6 penetrating the hydraulic block 9, the mission case 5 And configured to transmit power from the engine (4) to one of the front wheel (1) or the rear wheel (2) via the electric system inside, and the hydraulic continuously variable transmission (6) on the outside of the hydraulic block (9); Connects the transmission mechanism 8 to another part, and the power branched from the transmission system in the mission case 5 passes through the transmission mechanism 8 through the transmission shaft 17 passing through the hydraulic block 9. To the front wheel (1) or the other direction of the rear wheel (2) Passenger vehicle type herbicidal characterized in that.