JPH0518909Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention relates to a pretreatment lift stopper device for a combine harvester.

<Prior art> As is clear from FIG. 1, a lift frame 2 that generally swings a pre-processing device 2 of a combine harvester is used.
7 is swingably attached to the front end of the combine harvester body frame 4, with a width extending from the inside of the driver's seat frame 5 to the opposite side (uncut land side).
Due to the fuselage structure of the combine, there is a need for space between the driver's seat and the lift frame 27 for a power transmission such as a transmission.
The center of the frame of No. 7 is installed with a considerable dimension shifted toward the uncut land side from the center of the machine according to the space for installing the driver's seat and the transmission. The specified width of the pretreatment device is wide enough to extend from the side of the cut field of the machine body 1 to the front of the driver's seat 4 (see FIG. 4).

<Problems to be solved by the invention> However, in the above configuration, the lift frame 27 having a width of l ₁ is provided with a considerable dimension biased toward the uncut land side, and one lower fulcrum supporting the pretreatment device 2 31b is on one extension of the lift frame 27, while the other lower fulcrum 31b is on the transverse rod 2.
It has to be provided at a position that protrudes from the lift frame 27 toward the driver's seat side by l ₂ via 8. Therefore, if the divider tip pierces the soil or collides with an obstacle while the combine harvester is in the process of reaping or reaping, the impact load will be transmitted to the lift frame 27 via the divider frame 22 and pre-processing device frame 20. However, the load applied to the lower fulcrum 31b is received by the lift frame 2 with high rigidity at the end of the lift frame 27 itself.
7, the load applied to the lower fulcrum 31a generates a bending moment corresponding to l ₁ + l ₂ , and the load applied to the lower support 31a generates a bending moment corresponding to There is a problem in that a bending load or a torsional load is applied to the transmission part and the like, which may cause damage or failure of these parts.

<Means for Solving the Problems> The device of the present invention for solving the above problems includes a driver's seat frame 5 provided at the front end of the fuselage frame 4, and a pretreatment frame 20 at a side position of the driver's seat frame 5. In a mechanism in which a lift frame 27 that swings up and down is swingably mounted, a guard stopper that catches and stops either the preprocessing frame 20 or the lift frame 27 when it swings below the lowest posture due to an external force. 36 is provided to protrude downward from the driver's seat frame 5.

<Function> When a rearward external force is applied to the vicinity of the driver's seat side end of the pretreatment frame 20 with the lift frame 27 of the combine lowered to the lowest position,
The vicinity of the driver's seat side end of the pretreatment frame 20 or the lift frame 27 comes into contact with the guard stopper 36 to stop these swings, and the lift frame 2
7, pre-treatment transmission mechanisms, etc., to prevent them from being damaged or broken due to bending or torsional loads being applied to them.

<Example> Fig. 4 is an explanatory plan view showing the arrangement of various devices of a combine harvester. A driver's seat frame 5 projects from the right (already mowed field side) front of the frame 4, and a driver's seat 6 is mounted thereon. On the left side (uncut land side) of the driver's seat 6 at the front end of the machine frame 4, there are two rods that swingably support the pre-processing device 2, leaving a certain space where a power transmission such as a transmission is located. Support columns 7a and 7b are erected at positions closer to the left.

On the cut field side of the machine frame 4, a threshing unit 10 is mounted, which includes a feed chain 8 that receives grain rods from the transport device 3 and moves them rearward, a handling barrel 9 that is located inside the feed chain 8, and that performs threshing. , driver's seat 6
Behind and to the right of the threshing section 10 is a paddy receiving section 11.
However, a post-processing section 12 consisting of a cutter or the like is provided behind the threshing section 10. The above-mentioned body frame 4 has a running section 13 such as a crawler (Figs. 1 and 2).
(see figure).

The various mechanisms of the pre-processing device 2 are attached to a pre-processing frame 20, and at the rear of the lower part of the pre-processing frame 20 there is an extension part that extends particularly to the lower part of the driver's seat frame 5 while the pre-processing frame 20 is supported. 21a
A frame pipe 21 having a diameter is horizontally installed, and a plurality of divider frames 22 protrude from the front. Further, U-shaped upper supports 24a and 24b are provided at the upper portions of the pillars 7a and 7b to rotatably support the pretreatment drive shaft case 23.
Both ends of 3 are connected to the pretreatment frame 2 via stays 25.
0 and is also connected to the drive section of the preprocessing device 2 by a preprocessing transmission case 26.

The rear lower ends of lift frames 27, which are bendable and extendable in an inverted V shape, are rotatably supported at the lower parts of the columns 7a and 7b, and the lower front ends of the lift frames 27 are connected to the driver's seat. A horizontal rod 28 extending to the bottom of the frame 5 is installed horizontally, and U-shaped lower support points 31a and 31b are provided at both ends of the lower portion of the rod 28 to rotatably support the frame pipe 21 at two points. And the lift frame 27
A lift cylinder 29 is stretched at the lower part of the inside, and is a mechanism for vertically swinging the preprocessing device 2 by bending and stretching the lift frame 27.
Reference numeral 30 denotes a connecting rod that serves as a fulcrum for bending and extending the lift frame 27.

The lower limit positions when the preprocessing frame 20 and the preprocessing device 2 swing and descend are the pillars 7a and 7b.
The tip fixedly installed in between is regulated by a bolt-adjustable lower limit stopper 35, and the lower limit stopper 3
By adjusting the position of 5 in the front-back direction, the state of contact with the abutment rod 32 fixed to the lift frame 27 changes, and the lower limit position is also adjusted.

On the other hand, below the driver's seat frame 5 is a guard stopper 36 consisting of a bracket that projects downward.
The guard stopper 36 has a structure in which a reinforcing rib 36a is welded to the center of the inside of a steel plate bent in a V shape, and the pretreatment device 2 reaches the lower limit position by the lower limit stopper 35. Despite this, the right side of the preprocessing frame 20 (already mowed land side)
If a rearward load is applied to the end portion due to a collision with an obstacle, etc., the extension portion 21 of the frame pipe 21 at the lower rear end of the pretreatment frame 20
a comes into contact and prevents excessive loads from being applied to the lift frame 27, transmission shaft case 26, etc.

In this case, there is a slight gap 37 between the extension part 21a and the guard stopper 35 when the pretreatment frame 20 is stopped at the lower limit position. Guard stopper 36 unless a backward external force is applied.
The pretreatment frame 20 and the pretreatment frame 20 have a structure in which they do not come into contact with each other, and when a backward external force is applied, the pretreatment frame 20 or a portion thereof deflects within its elastic limit and the above-mentioned contact is performed. .

Near the outside of the pillar 7b on the outside of the uncut land side and the threshing part 1
In the space between
3 and a mounting plate 44, and a car wash pump 41 is removably mounted on a pump mounting seat 40a of the bracket 40 with bolts 42. 41
Reference characters a and 41b are hose connection ports for water intake and drainage of the pump 41. Input shaft 45 of the pump 41
The processing cylinder (second
The processing cylinder input shaft 46 is connected to the front protruding end of the input shaft 46 of the processing cylinder by a coupling ring 47.
The rear end is connected to the processing barrel shaft 49 via the joint shaft 48.
It is connected to the shaft of the handling cylinder 9 and interlocks with the shaft of the handling cylinder 9.

<Effects of the invention> According to the invention configured as described above, when the lift frame 27 for swinging the preprocessing is lowered to the lowest position during the forward movement of the combine, a backward relative load is applied to the preprocessing section. Even if the driver's seat side end of the pretreatment frame 20 or the lift frame 27 comes into contact with the guard stopper 36 and further rocking is stopped, the rearward-facing load makes repairs and replacements relatively easy. divider frame 2
Even if the 2nd etc. may be deformed or damaged, there is no excessive bending load or torsion load applied to the lift frame 27 or pretreatment transmission system, etc., which are difficult to repair or replace.
These damages and breakdowns can be prevented, and even if a combine harvester crashes, the damage can be kept to a minimum.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Figure 1 is an exploded perspective view of the vicinity of the front end of the combine machine frame including the main parts of the present invention, Figure 2 is a side view of the same part, and Figure 3 is a side view of the same part.
The figure is a partial front view of the same part, and FIG. 4 is a plan view of the arrangement of various devices of the combine harvester. DESCRIPTION OF SYMBOLS 1... Airframe, 2... Pre-processing device, 3... Transfer device, 4... Airframe frame, 5... Driver's seat frame, 6... Driver's seat, 20... Pre-processing frame, 2
7... Lift frame, 35... Lower limit stopper, 36... Guard stopper.

Claims (1)

[Scope of utility model registration request] A driver seat frame 5 is attached to the front end of the fuselage frame 4.
In a mechanism in which a lift frame 27 is swingably attached to a side position of the lift frame 27 to swing the preprocessing frame 20 up and down, when the preprocessing frame 20 or the lift frame 27 swings below the lowest posture due to an external force. This pre-treatment lift stopper device for a combine harvester is provided with a guard stopper 36 projecting downward from the driver's seat frame 5 to receive and stop any of these.