JPH01157311A - Reap-pretreatment apparatus for combine - Google Patents

Abstract

PURPOSE:To smoothen threshing action, by using raising guide composed of a 1st guide corresponding to a transfer path transferring a culm held in longitudinal position and a 2nd guide having a function to set a timing to switch a holding claw to the horizontal retreating posture. CONSTITUTION:A raising guide 73 is composed of a straight 1st guide 73A and a semiconductor 2nd guide 73B. The straight 1st guide 73A is attached to an ear-tip holding and transferring apparatus case 56 corresponding to a transfer path to transfer a transferring culm in a state held in longitudinal direction. The semicircular 2nd guide 73B is disposed around a rear supporting axis 43 in order to switch the holding claw 72 from the raising posture to the horizontal retreating posture. The 2nd guide 73B sets the release timing of the holding claw 72 in the case of charging a transferred culm into a transferring apparatus 6 with a base-clamping and transferring apparatus 6B and an ear-tip holding and transferring apparatus 6A.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention supports a reaping pretreatment mechanism for reaping grain culms so as to be movable left and right with respect to a traveling machine equipped with a threshing device, and also supports an Iil grain feeding mechanism. A grain culm clamping and conveying device that clamps the stalk of the culm, and a grain tip locking stage that works in cooperation with this stalk clamping F transport device to lock and transport the grain tip side of the transported grain culm with movable locking claws. The present invention relates to a reaping pretreatment device for a combine harvester, which is provided with a vertical conveyance device consisting of a feed device, and which is pivotally supported to be swingable from side to side around a rear fulcrum axis in conjunction with the lateral movement of a reaping pretreatment mechanism.

[Conventional technology]

In the pre-harvesting device of this type of combine harvester, the grain culm is fed into the threshing device from the rear end of the vertical conveyance device. Since it is necessary to switch to a sideways posture (located on the opposite side of the threshing feed chain), it is necessary to strictly control the setting of the timing at which the upper ear side locking claw releases the locking action on the conveyed grain culm. . However, the conventional standing guide for the locking pawl is attached to the support frame that constitutes the tip locking and conveying device (for example, Japanese Utility Model Publication No. 117951/1983).

[Problem that the invention seeks to solve]

Therefore, when the vertical conveyance device is swung left and right around the rear fulcrum with the erecting guide attached, the erecting guide also swings, which changes its posture with respect to the threshing device, and changes the locking release point of the locking pawl relative to the threshing device. However, this changed in response to the left and right swinging of the vertical conveyance device, and the posture of the grain culms being fed into the threshing device was not constant.

An object of the present invention is to provide a stand-up guide that can be constructed to accommodate a configuration in which a vertical conveyance device swings left and right.

[Means for solving problems]

The characteristic structure according to the present invention is as follows: (1) The upright guide includes a first guide corresponding to a conveyance path in which grain culms are vertically locked and conveyed, and a guide that is located near the entrance of the threshing device and is in the upright position. and a second guide for switching the retaining pawl to the laid-down and retired position; ■ The first guide is attached to the ear tip retention and conveyance device support frame so as to be able to swing from side to side integrally with the ear tip retention and conveyance device; ■ The second guide The two guides are installed so that their posture does not change with respect to the rear fulcrum axis, and the effects are as follows.

[For production]

■ Maintains the function of maintaining the upright guide in a position where the locking pawl locks the vertical position. - Releases the locking action of the first guide and the locking pawl, and locks the receiver in order to pass it to the threshing device. By dividing the guide into a second guide that has a function of setting the timing for switching the retaining claw from the upright position to the collapsed and retired position,
The second guide can be set in a state in which the posture of the second guide does not change with respect to the rear fulcrum axis (swing fulcrum axis of the rear conveyance device).

Therefore, even if the vertical conveyance device swings from side to side, the second guide is fixed and always maintains a constant posture relative to the threshing device entrance, so that the conveyed grain culm can always be maintained in the best feeding posture.

〔Effect of the invention〕

As a result, the grain culm fed into the threshing device can be maintained in a predetermined position, so that the threshing action can be performed smoothly.

〔Example〕

As shown in Fig. 8, the combine harvester includes a pulling device (2) that pulls up the planted grain culms that have been divided by a weed cutting tool (1), and a reaping device (3) that reaps the grain culms after being pulled up. , a left and right bunker (4A) as a merging conveyance device (4) that converges the harvested grain culm in the center of the cutting width, a conveyor belt with left and right protrusions (4B), and a rear threshing unit equipped with a threshing feed chain (39) for concentrating the harvested grain culm. The reaping pre-treatment device is composed of a vertical conveyance device (6) etc. that conveys the material toward the device (5), and a driver's seat (7) is arranged on the lateral side of the vertical conveyance device (6). ing.

The above-mentioned weeding tool (1), pulling device (2), and reaping device (
3), the merging conveyance device (4), etc. are collectively referred to as a reaping pretreatment mechanism (17), and the lateral sliding structure of this reaping pretreatment mechanism (17) with respect to the traveling machine body (9) will be explained. As shown in Figures 6 and 7, a vertical frame (lO) is installed at the front end of the traveling aircraft (9), and a horizontal transmission case (11) is mounted on the upper end of the vertical frame (lO). It is rotatably supported around an axis. The main frame (12) in a longitudinal orientation of the aircraft is fixed to the outer peripheral surface of the horizontal transmission case (11), and the horizontal transmission case (
The transmission shaft (13) of 11) and the transmission shaft (14) of the main frame (12) are connected by a bevel gear mechanism (15),
The transverse transmission case (11) is configured to receive power from an engine (not shown) at the end input pulley (8) of the transmission shaft (13) and transmit it to the transmission shaft (14) in the main frame. A support case (16) is provided at the tip of the main frame (12), and a reaping pretreatment mechanism (17) is attached to this support case (16).

The reaping pre-treatment mechanism (17) in this tip support case (16)
) mounting structure will be explained. As shown in FIGS. 6 and 7, the main frame (12) of the tip support case (16)
The mounting part has a sliding shaft (18
) is supported by a bearing so that it can slide in the direction of its own axis (X), and a passive bevel gear (19) is attached to the hexagonal intermediate portion, and a driving bevel gear (20) is attached to the tip of the main frame transmission shaft (14). is fixed and the sliding shaft (18
) is formed. This passive bevel gear (19) is fitted onto the hexagonal middle part of the sliding shaft (18) so that it can rotate integrally with the bearing (21).
It is rotatably supported by the distal end support case (16) via the distal end support case (16), and is configured to allow lateral sliding of the sliding shaft (18). The sliding shaft (18) has a lifting device (2
), (2) are provided with bevel gear transmission mechanisms (22), (22).

On the front side of the sliding shaft (18), the first sliding frame (23) of the second pipe is pivotally supported via bushes (24), (24) to the tip support case (16) so as to be able to slide laterally. At the same time, left and right support frames (2) have left and right weeding tool support rods fixed to the left and right ends protruding from the tip support case (16).
5) and (25) are connected and fixed.

Moreover, further forward of the first sliding frame (23), a second sliding frame (26) is provided with a left and right support frame (25).
, (25), and is inserted from the front opening side into a holder (27) having a substantially U-shaped cross section and extending further forward from the front end of the support case (16), and is supported by a loose fit; It is configured to be able to slide laterally relative to the holder (27).

Next, the lateral sliding drive device of the reaping pretreatment mechanism (17) will be explained. As shown in FIGS. 5 and 8, a screw shaft (28) with a large lead angle is inserted horizontally into the tip support case (16), and a screw shaft (28) with a large advance angle is inserted into the tip support case (16)
6) A female screw member (29) that engages with the screw shaft (28) is provided on the left side surface.

The left end of the screw shaft (28) is connected to the left support frame (25).
), and a driven bevel gear (30) is attached to the tip protruding from the left support frame (25). On the other hand, a drive motor (32
) is installed, and the downward output shaft of the drive motor (32) and the screw shaft (28) are connected to the downward transmission mechanism (
33) are transmission-connected via a transmission shaft. In the figure, (34) is a drive bevel gear that is attached to the lower end of the transmission mechanism (33) and meshes with the driven bevel gear (30).
(31) is a coupling that connects the downward output shaft of the drive motor (32) and the transmission mechanism (33).

On the other hand, as shown in FIGS. 3 and 6, the sliding shaft (1
8) covering the bevel gear transmission mechanism (22) provided at both ends with the first bevel gear case (35),
This first bevel gear case (35) is raised as a support base and a transmission case (59) is set upright, and a second bevel gear case (37) is provided in the middle of this raised transmission case (59). Power is branched from the bevel gear case (37), and the protruding conveyor bell I-(4B) and the backer (
A branch structure is formed to supply power to 4A). Then, a mounting base is extended from this second bevel gear case (37), and a drive motor (32) is attached to this mounting base.

Next, the handling depth adjustment device will be described in detail. As shown in FIG. 2, the 'a conveyance device (6) is a tip locking conveyance device
68) and a stock clamping and conveying device (6B), which is capable of vertically swinging around the axis of the horizontal transmission case (11), and a rear vertical support shaft raised from the horizontal transmission case (11). The transmission shaft (43) can swing left and right around its axis. A motor (44) with a worm reducer is attached to the main frame (12), and a two-circular gear (46) is attached via a bracket (45), and the motor output shaft binion (47) and the A-circular gear (44) are attached to the main frame (12). 46) are engaged, and the A circular gear (46) swings up and down around the horizontal axis (Y), and the drive unit can swing together with the two circular gear (46) at the horizontal axis (Y) position. The arm (49) is connected to the case (56) of the ear tip locking and conveying device (6A) as a support frame through a connecting loft (48), and the vertical conveying device (6) is configured to be able to swing up and down.

On the other hand, as shown in Fig. 8, the stock clamping and conveying device (6B)
A pair of upper and lower contact sensors are installed on a hanging frame (50) that is provided around the upper part of the conveyance path to suspend and support a clamping rail for the grain culm being conveyed by the vertical conveyance device (6). It is configured as a culm length sensor (51). In other words, the vertical conveying device (6) is vertically swung so that the tip of the grain culm to be transported just passes the vertical intermediate position of the side contact type sensor, and the clamping position of the stock clamping and conveying device (6B) is adjusted according to the long and short fields. The handling depth can be controlled so that the length of the grain thrown into the threshing device (5) becomes a set length at a constant position from the tip of the ear.

Next, the left-right swing structure of the vertical conveyance device (6) will be explained.

Transmission shaft (43) as a post-swing fulcrum shaft for the vertical conveyance device
A vertical transmission case (52) is fixed to the horizontal transmission case (11) to support the transmission shaft (
A driving sprocket l-(53) for the stock clamping and conveying device is fitted at an intermediate position between the upper and lower sides of 43), and a driving sprocket l-(54) for the ear tip locking conveying device is fitted to the upper end thereof so as to be integrally rotatable.

The upper half of the vertical transmission case (52) has a wall only on the rear side of the transmission shaft (43) for the vertical conveyance device, and a rotating frame ( 5
5) and its frame (55) is supported by a bearing on the transmission shaft (43) for the vertical conveyance device.

With respect to this rotating frame (55), the above-mentioned ear tip locking and conveying device case (56) and stock clamping and conveying device case (57) are connected to each other.
and both cases (56).

(57) connected by an intermediate support frame (not shown),
Spike tip locking and conveying device (6A) and stock clamping and conveying device (6B)
It is configured so that it can be swung left and right as one unit.

On the other hand, as shown in Fig. 2, the left and right support frames (25)
, (25) and a lifting device (2) for horizontal sliding.
The lifting transmission cases (59) and (59) are raised to the left and right, and the conveyor belt with the right locking claw I-
(4B) and the right puff car (4A) are rotatably fitted loosely into the vertical support shaft (61), which is pulled to the right via the horizontal rod (68) and suspended and supported by the transmission case (59). be. The right packer (4^) is rotated by constant engagement with the left bunker (4^), and the right packer (4A)
) The rotational driving force is supplied to the drive pulley of a conveyor belt l-(4B) with a locking claw, which is interlockingly connected to the cylindrical case (63).

The interlocking mechanism (60) that interlocks the reaping pre-processing mechanism (17) and the vertical conveyance device (6) will be explained.

As shown in FIGS. 2 and 4, this linkage mechanism (60)
, an engaging rod (65) to be described later, a swinging arm (67) that swings vertically and horizontally integrally with the vertical conveyance device (6), and an engaging rod (65) and a swinging arm (67). and a relay rod (69) that connects the two. The engagement rod (65) is formed into a curved shape so as to be located on an arc line centered on the rear horizontal axis (13) of the vertical conveyance device (6), and its upper end is pulled to the right to open the transmission case (59). Bracket (64) extending from
The lower end of the conveyor bell I-(4B) is fixed by welding to the upper cover (66) of the right conveyor bell I-(4B).

The swing arm (67) is fixed to the swing frame (55) via a bracket (42), and has a sliding boss (71) fixed to its tip.

The relay rond (69) has one end connected to the engagement rod (65).
A moving boss (69
a), and the rond part (69h) extending rearward from the moving boss (69a) is slid relative to the sliding boss (71) in the axial direction of the rond part (69b). It is configured so that it can be inserted and installed.

Furthermore, since the moving boss (69a) at one end of the relay rod (69) is fitted onto the outside of the engaging rod (65) so as to be able to swing from side to side around the axis, as shown in FIG. , the pre-harvesting treatment mechanism (17 ) to the left side to adopt a circular mowing mode, the sliding rod (69)
rotates to the right around the axis of the engaging rod, and the lateral movement amount (1) of the starting end (6a) of the vertical conveyance device (6)
7) is smaller than the lateral movement ffl (L), and the positional change with respect to the conveying grain culm guide rod (41) is small.

As described above, the linking mechanism (60) such as the sliding rod (69) is connected to the starting end of the vertical conveying device due to the swinging of the vertical conveying device (6) with respect to the horizontal movement amount (1,) of the reaping pretreatment mechanism (17). 61E(
6a) is a mechanism for setting the horizontal movement amount (J) small.

On the other hand, the upright guide (73) for the locking pawl (72) in the ear locking and conveying device (68) that swings left and right around the rear fulcrum shaft (43) will be explained. Rotating chain (7
A movable locking pawl (72) is attached to the link of 4) in an active position in which it locks on the conveyed grain culm and in an inactive position in which it retires into the ear-end locking and conveying device case (56). ) is provided with the standing guide (73). This upright guide (73) corresponds to the conveyance route in which the conveyed grain culms are conveyed while being locked in a vertical direction.
56), a linear first guide (73A) attached to the
It consists of a semicircular second guide (73B) arranged around the rear fulcrum shaft (43) in order to switch the locking pawl (72) in the upright position to the collapsed and retired position. In this vertical conveyance device (6), the stock head clamping conveyance device (6B) approaches the threshing feed chain (39), while the head locking conveyance device (6A) moves away from the threshing foot chain (38). Since it is installed in the direction, both (6A)
In step (6B), the grain culm to be transported is gradually brought to a sideways position, and the locking pawl (72) is engaged when the grain culm to be transported in this sideways position is put into the transport device (6). The second guide (73B) sets the release timing,
This second guide (73B) is connected to the vertical transmission case (5).
2) The upper end is formed in a semicircular shape, and the semicircular upper end is inserted into the case (56) through the hole (56a) on the side of the ear locking and conveying device case (56), There is no change in attitude with respect to the rear fulcrum shaft (43).

As shown in Fig. 5, weeds etc. accumulate on the screw shaft (28) involved in the lateral sliding of the reaping pre-treatment mechanism (17) and the first sliding frame (23), resulting in malfunction. In order to avoid this problem, a cover (70) is provided to cover the entire pre-reaping treatment mechanism (17).

[Another example]

(2) A dedicated second guide (73B) may be provided separately.

Note that although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping pre-processing device for a combine harvester according to the present invention, FIG. 1 is a plan view showing a connecting portion between a first guide and a second guide, and FIG. 2 is a horizontal swing structure of a vertical conveyance device. , a partially cutaway side view showing the vertically swinging structure, FIG. 3 is a plan view showing the guide of the ear tip conveying device, and FIG. 4 shows the lateral movement of the reaping pretreatment mechanism and the horizontal movement of the vertical conveying device linked thereto. 5 is a front view showing the lateral movement structure of the pre-reaping treatment mechanism, FIG. 6 is a cross-sectional plan view showing the lateral movement structure of the pre-reaping treatment mechanism, and FIG. 7 is a lateral movement of the pre-reaping treatment mechanism. FIG. 8 is a longitudinal side view showing the structure, and FIG. 8 is an overall side view. (5)... Threshing device, (6)... Vertical conveyance device, (68)... Ear end locking conveyance device, (6
b)... Stock clamping and conveying device, (17)...
... Reaping pre-treatment mechanism, (43) ... Rear fulcrum shaft,
(72)...Latching claw, (73)...Rising guide, (73A)...First guide, (73
B)...Second guide.

Claims (1)

[Claims] The reaping pre-treatment mechanism (17) for reaping grain culms is connected to the threshing device (5).
) is mounted on the traveling machine (9) so as to be movable laterally to the left and right, and also supports the stock head clamping and transporting device (6B) which clamps the grain stalk of the transported grain culm and cooperates with this stock head clamping and transporting device (6B). A vertical conveyance device (6) is provided, which is composed of a ear-end locking and conveying device (6A) that locks and conveys the grain culm by locking the tip side of the conveyed grain culm with a movable locking claw (72), and this vertical conveying device (6) in conjunction with the lateral movement of the reaping pre-treatment mechanism (17).
) A reaping pretreatment device for a combine, which is pivotally supported around the periphery so as to be swingable from side to side, wherein a standing guide (73) for the locking pawl (72) in the ear tip locking and conveying device (6A) is provided.
The first guide (73A), which corresponds to the conveyance path in which the conveyed grain culm is conveyed by locking it vertically, and the locking pawl (72), which is located near the entrance of the threshing device (5) and is in the upright position, are laid down. The second guide (73B) is configured to switch to the retired position, and the first guide (73A) is integrated with the ear tip locking and conveying device (6A).
), and the second guide (73B) is arranged so that its posture does not change with respect to the rear fulcrum shaft (43).