JPS5931461Y2 - combine - Google Patents

Description

[Detailed explanation of the idea] This invention mainly relates to a walking-steer type combine harvester.

When reversing this type of combine harvester, if there is an obstacle behind the operator, if the operator continues reversing without being aware of this, the operator will be pressed against the obstacle by the combine, resulting in an emergency situation. is dangerous.

The present invention was devised in view of the above points, and when the operator hits an obstacle while the combine is moving backwards, the gear lever is automatically pushed back from the reverse position to the neutral position, and the combine is moved backwards. This was done to stop the reverse movement of the combine harvester and allow the combine to run safely.

Next, the present invention will be explained with reference to the embodiments shown in the drawings.

1 in the figure is the fuselage of the combine, with traveling devices 2 on both sides of the bottom,
A threshing device 4 having a feed device 3 is mounted on the upper part of the machine body 1, and a reaping device 5 is provided at the front of the machine body 1. A culm lifting device 6 is interposed between the steps, and the culm cut by the reaping device 5 is lifted by the lifting device 6,
It is delivered to the feed device 3 of the threshing device 4, and is supplied to the threshing device 4 by the device 3 for threshing processing.

Reference numeral 1 designates a control box installed on the side of the threshing device 4 at the rear of the machine 1, and on one side of the top surface of the box 7 there are locking positions for locking the four forward gears and the two reverse gears when changing gears. F 1 , F 2 , F 3 *F 4 and R1+R
2, a gear shift lever 9 projects upward from the guide hole 8, and the lever 9 can be switched over four forward gears and two reverse gears via an interlocking mechanism 10. By interlockingly connecting to a device (not shown) and moving the lever 9 along the guide hole 8,
The combine is intended to be shifted through four forward speeds and two reverse speeds.

Further, on the other side of the guide hole 8 on the upper surface of the box 7,
Two guide holes 11.11 extending in the front-rear direction are formed, and brake levers 12, 12 are made to protrude upward from the respective holes 11, 11, and each traveling device 2, 2 is operated by operating the respective levers 12, 120. I am trying to apply the brakes and steer the combine harvester.

Further, the control box I has a U-shaped control handle 13 projecting rearward.

Therefore, in the combine harvester as described above, the present invention moves the gear shift lever 9 to the reverse locking position R of the guide hole 8 at the inner upper part of the control box 7 and at the front and rear sides of the guide hole 8.
This is because actuating members 14 and 14 for forcibly returning from R2 to the neutral position NK are provided in opposing positions.

Each actuating member 14 has projecting pieces 1 extending in the same direction on both sides.
4a and 14b, the base of the one protruding piece 14a is pivotably supported by a pin 15, and the protruding piece 1 is
A spring 16 is interposed between the tip of the actuating member 14 and the inner wall of the box 7 to move the other protruding piece 14b side of the actuating member 14 from the backward locking position R1 or R2 of the guide hole 8 to the neutral position N.
This is done in order to gain support from the enemy.

An engaging hole 11 is formed at the tip of the other protruding piece 14b buttoned on each of the operating members 14 in the housing, and a locking pin 18 that can be inserted into the retaining hole 11 is freely moved in and out of the lower position of the protruding piece 14b. , and only when the gear shift lever 9 is positioned at each reverse locking position R1 or R2VC of the guide hole 8, the pin 1
8 into the engagement hole 17, the operating member 14 and the shift lever 9 are interlocked, the shift lever 9 is held in the reverse state, and the pin 1B is moved backward from the engagement hole 17. By doing so, the actuating member 14 is swung to automatically return the gear shift lever 9 from the reverse locking position R1 or R2 to the neutral position N.

It should be noted that a spring or the like is applied to the pin 18 as appropriate so that the pin 18 does not come off from the actuating member 14 and is in elastic contact with the lower part of the member 14 at all times.

Further, the steering handle 13 has guide grooves 19 and 19 having a U-shaped cross section formed on both sides of the box 70, and the guide grooves 19 and 19 have a U-shaped cross section.
, 19 with both ends of the steering wheel 13 positioned,
By inserting and fixing the long bolt 20 between the two, the handle 13 is attached so as to be freely movable along the guide grooves 19 and 19.

The bolts 20 and each pin 18 are connected via an outer cylinder 21 and an inner wire 22 inserted into the cylinder 21, respectively, and when the 20 bolts are twisted and the control handle 13 is moved forward, the inner wire 22 to retreat the pin 18 from the engagement groove 17, thereby releasing the interlocking engagement between the operating member 14 and the speed change lever 9 by the locking tool.

Although the description has been given above of a device capable of changing gears with two reverse speeds, the present invention can of course be used with one reverse speed, and in this case, one actuating member 14 is used. It is.

Further, in the above description, the control handle 13 is interlocked with the locking pin 18 to operate the actuating member 14, but in the present invention, a sensing body other than the handle 13 may be provided at the rear of the aircraft body. .

When the combine harvester described above is to travel backwards, the speed change lever 9 is moved along the guide hole 8 to the reverse locking position R1 or R2Vr-, as shown in FIG.

Then, one of the actuating members 14 swings outward from the locking position R1 or R2 using the pin 15 as a fulcrum, the engagement hole 17 of the member 14 reaches the position of the locking pin 18, and the pin 18 It advances into the engagement hole 11 and locks the actuating member 14 in the swinging state.

However, when the operator hits an obstacle while the combine is traveling backwards, the operator moves the control handle 13 forward as shown by the chain line in FIG. so that the pin 18 is connected to the actuating member 14
As a result, the actuating member 14 is swung toward the neutral position N of the guide hole 8 by the urging force of the spring 16, and the shift lever 9 is returned to the neutral position N. This will stop the combine harvester from traveling backwards.

As explained above, the present invention moves the locking device interlockingly connected to the sensing body only when the gear shift lever is located at the reverse locking position, so that it moves along with the movement of the lever and also positions the locking tool at the reverse locking position. Therefore, when the shift lever is located at the forward locking position, there is no contact between the actuating member and the shift lever, and as a result, there is no contact between the sensing member and the shift lever during forward travel. There is no problem of the actuating member working and inadvertently moving the shift lever from the forward locking position to the neutral position due to contact with the operator. When the aircraft hits an obstacle, the sensing body provided at the rear of the aircraft is moved to release the actuating member from the reverse locking position, and move the shift lever from the reverse locking position to neutral. The combine harvester can be automatically returned to its original position, preventing the operator from being pinched between the combine harvester and an obstacle, and allowing the combine harvester to run safely.

[Brief explanation of the drawing]

The drawings show an embodiment of the combine harvester of the present invention: Fig. 1 is a plan view, Fig. 2 is an enlarged rear view of the control box, Fig. 3 is an enlarged bottom view of its main parts, and Fig. 4 is an operating member. FIG. 1... Airframe, 7... Stationary member (control box), 9... Gear shift lever, 13...
- Detector (control handle), 14... Operating member, 16... Bent spring, 17. 18... Locking tool (retaining hole, locking pin).

Claims (1)

[Scope of utility model registration request] An operating member that returns the gear shift lever from the reverse locking position to the neutral position is supported by a stationary member on the aircraft side, and a spring is interposed between the operating member and the stationary member, so that the operating member normally returns the gear shift lever to the neutral position. As well as assisting to advance to the position,
The actuating member is configured to interlock with the lever only when the lever is in the reverse position, and the actuating member and the stationary member are configured to engage the actuating member in conjunction with the gear shift lever in reverse. A locking device is provided for locking backward movement from the stop position, and when the shift lever advances to the reverse locking position, the actuating member, which moves with the movement of the lever, is placed in the reverse locking position by the locking device. It can be locked, and a sensor is installed at the rear of the aircraft to detect when it hits an obstacle when going backwards.
A combine harvester characterized in that the locking device is interlocked with the sensing body so that the sensing body releases the locking of the operating member by the locking device when the sensing body moves to the reverse locking position. O