JPH0637635Y2 - Combine handling depth control structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is configured to convey a grain culm after raising and mowing to a rear threshing device by a vertical transport device, and detect the culm length of the transported grain culm. Depth control device provided with a sensor and a drive device capable of vertically swinging the vertical transport device with respect to the machine frame in order to change the holding position of the vertical transport device with respect to the transported grain culm based on the detection result of the sensor. The present invention relates to a combine depth control structure for a combine.

[Conventional technology]

In this type of combine handling depth control structure, there is a drive device previously proposed by the applicants of the present invention as a drive device capable of vertically swinging a vertical transfer device with respect to a machine frame (actual application 61- No. 52357 (FIGS. 3 and 4), the gist of this is that the rack that engages with the drive motor side pinion is formed of a member having an L-shaped cross section.

[Problems to be solved by the invention]

In this case, the rack has an L-shaped cross section, which is superior to the plate-shaped one in terms of strength, but since the occlusal teeth are formed on one side protruding laterally, the protruding side The drive motor could not be placed close to the length of the above, and the installation space was required accordingly.

An object of the present invention is to provide a rack that can be assembled with a small installation space by making a simple shape change and devising the arrangement of the rack and the drive motor.

[Means for solving problems]

A characteristic configuration according to the present invention is that the drive device includes a drive motor having a pinion attached to an output shaft, a rack that meshes with the pinion, and
It is formed by a link mechanism that vertically swings the vertical transfer device by forward and reverse operations of the rack, and that the drive motor is attached to the machine frame side mounting base with the pinion positioned on the mounting base side. The rack is interleaved between the opposite side surfaces of the mounting base and the drive motor in a state of substantially sliding contact with both side surfaces, and the operation and effect thereof are as follows.

[Action]

In order to sandwich the rack between the drive motor and the mounting base, the drive motor is mounted on the mounting base so that the pinion is located on the mounting base side. It is possible to adopt a configuration of sliding contact, and the load applied to this rack can be shared by the mounting base and the drive motor. That is, the lateral vibration caused by the body vibration of the vertical transport device driven by the rack acts on the rack as a reaction force, and the rack is laterally deformed in the axial direction of its support shaft.
On the other hand, the mounting base and the drive motor receive the lateral displacement of the rack and reduce the load acting on the rack. Therefore, the shape of the rack may be a thin plate-like one instead of a rigid one having an L-shaped cross section as in the conventional case.

[Effect of device]

As a result, even if the rack is interleaved, the installation space can be reduced and the overall installation space for the drive device can be reduced, and in particular, the drive device can be used as a drive device in the vertical transfer device area where various devices are concentrated. It has become possible to provide a combine depth control structure that needs to find an installation space, which can reduce design and manufacturing loads.

〔Example〕

As shown in FIG. 3, the combine is a raising device (2) for raising planted grain culms sown by the weeding tool (1), and a mowing device (3) for cutting the grain culms after the raising. A packer (4) for concentrating the harvested grain culm at the center of the cutting width, a vertical transporting device (6) for transporting the focused grain culm to the rear threshing device (5), and the like. 7) It is attached to a main frame as a machine body frame (8) extending from the front end in a front-back direction, and is vertically movable with respect to the traveling machine body (7). Although the specific structure is not described here, the weeding tool (1), the raising device (2), the mowing device (3), the packer (4), etc. are collectively referred to as a mowing pretreatment mechanism and the traveling machine body ( It is possible to slide laterally with respect to 7), and in conjunction with the horizontal sliding of this pre-mowing treatment mechanism, it can be swung to the left and right around the rear fulcrum to the vertical transport device (6), and it is vertically transported from the pre-mowing treatment mechanism. It is configured to smoothly transfer the grain culms to the device (6).

Next, the handling depth control device (9) will be described in detail. The vertical transfer device (6) is composed of a tip locking transfer device (6A) and a stock holding device (6B), and the main frame (8).
It is possible to swing up and down integrally by the drive unit (13) around the attachment fulcrum (X).

On the other hand, a U-shaped frame (11) supporting the holding rail (10) for the stock-source holding and conveying device (6B) is installed in a state of bypassing the upper part of the grain culvert space, and the U-shaped frame (11) is mounted on the U-shaped frame (11). A pair of upper and lower culm length sensors (12) for detecting the culm length by contact with the transported grain culm are attached. Then, the vertical transfer device (6) is vertically rocked so that the tip of the grain culm transferred by the vertical transfer device (6) passes through the intermediate position of the vertical culm length sensor (12), and the stock carrier holding transfer device ( 6B)
Depth control that adjusts the grain culling holding position by so that the length is constant from the tip regardless of long culm and short culm, so that the input length to the threshing device (5) is always constant. Configure the device (9).

Next, the drive device (13) of the handling depth control device (9) will be described. A U-shaped mounting frame (14) is erected on the main frame (8) in a top view,
A drive motor (15) with a worm reducer is attached from the left side to the side surface (14A) of the attachment frame (14).
Pinion (1) attached to the output shaft of this drive motor (15)
6) is mounted by penetrating the side surface of the mounting frame (14). On the other hand, the lateral support shaft (26) is fixed to the side surface (14A) of the mounting frame (14) by penetrating it, and the tubular boss (17) is loosely fitted to the lateral support shaft (26). A 1/4 circular thin plate-shaped rack (18) is integrally rotatably fixed to the end of the machine body frame and is engaged with the pinion (16). A pin (19) is erected on the right side of the rack (18), and a receiving plate (20) is erected on the base end of the main frame (8). A balance spring (21) is stretched over. This balance spring (2
1) has a function of urging the vertical conveyance device (6) to the upward side to reduce the load applied to the drive motor (15). A connecting arm (22) is fixed to the end of the cylindrical boss (17) opposite to the side where the rack (18) is attached, and the connecting arm (22) is vertically conveyed through a turnbuckle type connecting rod (23). A link mechanism (24) for connecting the rack (18) and the vertical transfer device (6) is formed by connecting to the frame of the device (6) side. In the figure, (25) is a bolt for adjusting the tension of the balance spring (21).

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 shows an embodiment of a combine depth control structure according to the present invention, FIG. 1 is a side view showing a handle depth drive device, FIG. 2 is a cross-sectional plan view corresponding to FIG. The figure is a side view of a combine harvesting pretreatment device. (5) ... rear threshing device, (6) ... vertical conveying device,
(8) ... machine frame, (9) ... handling depth control device,
(12) …… Circle length sensor, (13) …… Drive device, (14)…
Mounting base, (15) drive motor, (16) pinion, (18) rack, (24) link mechanism.

Claims (1)

[Scope of utility model registration request] 1. A sensor (12) for detecting the culm length of the conveyed grain culm, which is configured to convey the grain culm after raising and cutting to the rear threshing device (5) by a vertical conveying device (6). Based on the detection result of this sensor (12), the vertical transfer device (6) should be used to change the holding position of the vertical transfer device (6) with respect to the transfer grain stem.
A handling depth control structure for a combine, comprising a handling depth control device (9) including a driving device (13) capable of swinging up and down with respect to a machine body frame (8). 1
(3) is a drive motor (15) having a pinion (16) attached to an output shaft, a rack (18) that meshes with the pinion (16), and a vertical transfer device (forward / reverse operation) of the rack (18). 6) is formed with a link mechanism (24) for vertically swinging drive, and the drive motor with the pinion (16) positioned on the mounting base (14) side with respect to the machine frame side mounting base (14). (15) is attached, between the mounting base (14) and the drive motor (15) facing each other,
A structure for controlling the handling depth of a combine in which the rack (18) is placed in a state of substantially sliding contact with both side surfaces.