JPS592982Y2 - Back check device for mobile agricultural machinery - Google Patents

Description

[Detailed description of the invention] This invention relates to a back restraint device for a mobile agricultural machine, which prevents the tilling claw from being driven inadvertently when going backwards, and the machine from carelessly moving backward when the tilling claw is being driven. In addition, it is possible to reliably prevent accidents caused by accidents and increase safety, and it is also possible to move backwards while driving the tilling claws if necessary.
The purpose is to create a back restraint device for mobile agricultural machinery that can simplify the assembly structure.

This invention includes a mobile agricultural machine equipped with a traveling transmission, and a working machine equipped with a working machine transmission equipped with a shifter having a neutral position and connected to the mobile agricultural machine. A restraining plate is removably provided on the fuselage, and the check plate engages only when the change lever of the travel transmission is operated to reverse the gear, and is interlocked with the change lever, and a shifter shaft is provided with a fixedly provided actuating part for driving the chic. The shifter shaft is rotatably provided on the body of the working machine, and is connected to the restraining plate by a wire to the body of the working machine, so that the shifter shaft is locked in the neutral position in conjunction with the restraining plate, and the thick shaft is in the neutral position. A movable regulating plate is provided which interferes with the thick shaft and prevents the movement of the restraining plate when it is located at any other position.

In other words, the shifter shirt I is rotated to put the working machine transmission into the driving state, but only when the change lever of the traveling transmission is shifted backward, the check plate is linked to the change lever and the restriction plate is moved in the locking direction. The thick shaft is locked in the neutral position along with the shifter, and the power to the driving transmission is maintained in a state where the power is cut off. When the driving transmission is in the power transmission state, the regulation plate interferes with the thick shaft and prevents it from moving. In order to prevent this, the check plate is locked and the reverse gear shift operation of the travel transmission change lever is prevented. It is possible to drive the working machine while moving backwards by simply removing it from the body of the mobile agricultural machine.Moreover, since the regulation plate and check plate are only added to the outside of the machine body, the structure is simplified and assembly, adjustment and inspection are simplified. It is designed so that it can be easily carried out.

An embodiment of this invention will be explained based on the drawings.

As shown in FIGS. 1 to 3, although some parts are not shown, 1 is a traveling mission case mounted on the body of a mobile agricultural machine, in which a traveling mission is provided.

A stay 2 is fixed to the left side of the traveling transmission case 1 with bolts 3.

A cylindrical change lever holder 5 is held on a shaft 4 that projects laterally from the stay 2 so as to be rotatable in the front and rear directions.

A cylindrical lever joint 6 is fitted into the change lever holder 5 so as to be rotatable while being prevented from being removed by a bolt 7.

A joint arm 9 having a boss portion 8 is fixed to the upper part of the lever joint 6.

A change lever 11 having a boss portion 10 facing the boss portion 8 is urged downward by a spring 12 and is slidably and rotatably attached to the change lever holder 5 and the lever joint 6 in the axial direction. It is fitted.

Clutches 13 that engage with each other are formed on opposing surfaces of the boss portions 8 and 10.

Furthermore, a locking protrusion 14 is formed protruding from the rear end edge of the joint arm 9.

Furthermore, two shifter rods 15 protrude from the left side of the traveling transmission case 1, and a thick guide 16 that engages with the front end of the joint arm 9 is provided at the protruding ends of these rods.

Further, a stay 17 is detachably attached to the stay 2 with a bolt 18, and a check plate 1 is attached to the stay 17.
9 is held rotatably in the left and right direction.

Further, a holder 20 is fixed to this stay 17, and one end of a wire 22 protected by a protective tube 21 whose one end is fixed to this holder 20 is fixed to the restraining plate 19.

Next, as shown in FIG. 4, a working machine 23 is provided which is connected to the mobile agricultural machine.

The body 24 of this work machine 23 includes a frame 25, a transmission case 26, a work machine mission case 27, and a sub-case 28 fixed to the upper part of the work machine mission case 27.
It is composed of.

A tilling shaft 3 having tilling claws 29 is provided at the lower end of the transmission case 26.
0 is concatenated.

A work machine mission 31 is housed in the work machine mission case 27.

As shown in FIG. 5, this working machine transmission 31 has an input shaft 32 connected to an output shaft (not shown) of the mobile agricultural machine.
, a shift gear 35 having two teeth 33 and 34 and slidably spline-fitted to the input shaft 32, and a tooth 36 meshing with each of the teeth 33 and 34.
．． 37, and an intermediate gear 39 that meshes with the teeth 36 of this gear 38, and this intermediate gear 39 is connected to the tilling shaft 30 by a sprocket wheel 40 and a chino 41.

A shifter 4 that slides the shift gear 35
2 is provided.

Further, as shown in FIGS. 5 to 7, a thick shaft 43 is rotatably provided in the sub-case 28.

A shifter lever 44, which is an operating section, is fixedly provided on the thick shaft 43.

This shifter lever 44 is in the shape of an inverted letter, and both sides thereof are connected to a speed change operation section (not shown) via a wire 45, and its center arm 46 is connected to the shifter 42.

A holder 47 is fixed to the rear surface of the sub-case 28 by bolts 48, and a regulating plate 49 is held in the holder 47 so as to be vertically movable while being urged downward by a spring 53.

A circular release hole 50 and a narrow locking hole 51 are formed in the center of the regulating plate 49 in communication with each other.

At one end of the thick shaft 43, there is a rotation stopping portion 52 formed by parallel slots that match the width of the locking hole 51.
is formed.

Further, the wire 22 is connected to the upper end of the regulation plate 49.

In such a configuration, the forward speed change operation is performed by tilting the change lever 11 forward, but in this state, the locking protrusion 14 of the joint arm 9 releases the check plate 19.

Then, by pulling either one of the wires 45, the shifter lever 44 rotates together with the shifter shaft 43 to slide the shifter 42 to the right or left.

At this time, the release hole 50 of the regulating plate 47 is
The rotational movement of step 3 is not restricted.

Thereby, the shift gear 35 transmits the rotation of the input shaft 32 to the gear 38 while changing the speed, and the tilling shaft 30 is driven.

In this state, the locking hole 51 of the regulating plate 49 interferes with the shifter shaft 43, so that upward movement of the regulating plate 49 is prevented.

Therefore, the clockwise movement of the check plate 19 is prevented, and when the change lever 11 is tilted backward together with the joint arm 9, the check plate 19 engages with the locking protrusion 14 and rotates the change lever 11. lock.

In other words, tillage axis 30□ There is no danger of inadvertently reversing while driving.

When the thick shaft 43 is in the neutral position, the rotation stopper 52 and the locking hole 51 are parallel to each other as shown in FIG.

As a result, when a decimal speed change operation is performed, that is, an operation in which the change lever 11 is tilted backward and rotated, the restraint plate 19 is rotated in conjunction with the control plate 19, and the restriction plate 49 is pulled by the wire 22 and raised.

That is, the locking hole 51 of the regulating plate 49 engages with the rotation stopper 52 to lock the shifter shaft 43 in the neutral position.

Therefore, the danger of the working machine transmission 31 being connected while moving backward is prevented.

When the working machine transmission 31 is brought into the connected state while traveling backwards, by removing the check plate 19 together with the stay 17 from the traveling transmission case 1, the regulating plate 49 becomes free and moves downward by the force of the spring 53. The thick shaft 43 is positioned in the release hole 50 to allow its rotational movement.

In this way, it is possible to prevent the tilling shaft 30 from being driven carelessly while moving backward, but this can be prevented by using the check plate 19.
It can be obtained with a simple structure just by adding the and regulation plate 49,
The check plate 19 is attached to a part of the outer surface of the body of the mobile agricultural machine,
Since the regulating plate 49 is also attached to a part of the outer surface of the body 24 of the working machine, assembly, adjustment, and inspection can be easily performed.

Since this invention is constructed as described above, the restraining plate operates the regulating plate in conjunction with the reverse gear shift operation of the change lever to lock the shifter shaft in the neutral position, and
While the tilling shaft is being driven, the movement of the regulating plate is blocked by the shifter shaft located at a position other than the neutral position, fixing the restraining plate and preventing the reverse gear shift operation of the change lever, thereby driving the tilling shaft while moving backward. In addition, by removing the restraint plate, the tilling shaft can be driven while moving backwards if necessary. It can be obtained with a simple structure that is simply added to the outside, and has the advantage of being easy to assemble, adjust, and inspect.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is a side view showing the relationship between the check plate and the change lever, Fig. 2 is a rear view thereof, Fig. 3 is a plan view thereof, and Fig. 4 is a side view showing the relationship between the check plate and the change lever. A side view of the working machine, Fig. 5 is a longitudinal sectional front view showing an enlarged view of the working machine transmission, Fig. 6 is a longitudinal sectional side view showing the relationship between the regulation and the thick shaft in a further enlarged manner, and Fig. 7 is a longitudinal sectional side view showing the relationship between the regulation and the thick shaft. It is a back view with a part notched. 1...Transmission case for traveling (part of the body of a mobile agricultural machine), 11...Change lever, 19.
... Check plate, 22 ... Wire, 23 ...
... Work equipment, 24 ... Aircraft, 31 ...
...Mission for work equipment, 42...Shifter, 4
3...Shifter shaft, 44...Shifter lever = (actuating part), 49...Regulation plate.

Claims (1)

[Scope of utility model registration request] A mobile agricultural machine equipped with a traveling transmission and a working machine equipped with a working machine transmission equipped with a sickle having a neutral position and connected to the mobile agricultural machine are provided, A restraining plate that engages only when the change lever of the working transmission is operated to reverse gear change and is interlocked with the change lever is removably provided, and the shifter shaft on which the actuating part for driving the sick is fixedly provided is connected to the shift lever of the working machine. The shifter shaft is rotatably provided on the body of the work machine, and is connected to the restraining plate by a wire to the body of the working machine, and locks the shifter shaft in a neutral position in conjunction with the restraining plate, and also moves the shifter shaft in a position other than neutral. A back check device for a mobile agricultural machine, comprising a movable regulating plate that interferes with the thick shaft and blocks the movement of the check plate when the check plate is positioned.