JP2699997B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine pre-cutting device in which a pre-cutting mechanism for cutting a grain stalk is supported on the front side of an airframe equipped with a threshing device so as to be movable left and right and laterally.

[0002]

2. Description of the Related Art In this type of combine pre-cutting device, when the pre-cutting mechanism is moved laterally to the left and right, the rear end of a support for supporting the pre-cutting mechanism is used as a fulcrum, and the front end is set to the left and right. (See, for example, Japanese Patent Publication No. 53-27171).

[0003]

However, the above-mentioned conventional structure has the following problems. In other words, the support that supports the pre-cutting mechanism adjusts the cutting height, etc.
It swings up and down, and swinging the support itself right and left is not realistic, and the structure becomes complicated.
In addition, regardless of the right and left swing of the support, after moving the pre-cutting mechanism in the left-right lateral direction, the pre-cutting mechanism is moved left and right without changing the direction of the pre-cutting mechanism while maintaining the desired forward posture. There was no solution on how to do this. The present invention has been devised in consideration of these points, and is a specific practical solution for moving the pre-cutting mechanism linearly in the horizontal direction in the horizontal direction with respect to the traveling direction of the machine. It seeks to provide a means. Thereby, for example, when the uncut kernels are positioned on the left side and the counterclockwise cutting is performed,
By extending the left side of the pre-cutting mechanism to the left outside of the fuselage to increase the distance between the uncut culm and the left crawler traveling device, the mud pushed by the left crawler traveling device causes the uncut grain to be extruded. It is possible to prevent the culm from being pushed down or the mud sticking to the uncut grain culm beforehand. By positioning the weeding tools in front of the crawler traveling device on both the left and right sides of the left and right sides of the crawler, it is possible to prevent the uncut mushroom culm from being pushed down and effective rotation cutting work, middle cutting An object of the present invention is to realize a combine pre-processing device capable of performing a mowing operation. Furthermore, the present invention
As described above, an object of the present invention is to solve the problem in adopting a configuration in which the pre-cutting mechanism is linearly moved in the left-right lateral direction with respect to the machine body traveling direction. That is, in order to move the pre-cutting mechanism relative to the fuselage relatively linearly without causing a complicated structure, the pre-cutting mechanism can be moved relatively to the support on the side of the fuselage. Need to support. It is conceivable to provide two supporting points at the front and rear in order to obtain a sufficient supporting strength in the supporting points that allow the relative movement. in this case,
If the supporting points are provided in two places in the front and rear with the fitting structure, it is quite difficult to accurately configure the two fitting structures in a state where the axes of the two parts are completely matched, which may lead to an increase in manufacturing cost. Therefore, it is an object of the present invention to reduce the manufacturing process and the assembling accuracy, and to make it possible to linearly move the pre-cutting mechanism with a structure as simple as possible. Also, by forming one of the support points in the front-rear direction as a structure for that purpose, instead of a fitting structure, a support structure having a U-shaped section,
The processing of the supporting portion can be facilitated, and by adopting this technique, the second moving guide body, which is the framework of the pre-cutting mechanism, is inserted into the second guide body having a U-shaped cross section from the front, and It can be detached and attached, which has the advantage of improving the convenience of assembling and disassembling the pre-cutting mechanism. There is a possibility that various contaminants such as dust, mud, and weeds may enter the gap between the sliding member on the pretreatment mechanism side. In order to avoid such intrusion of foreign substances, it is conceivable to cope with the problem by forming the gap between the support on the machine body side and the sliding member on the pre-cutting mechanism side as narrow as possible. However, it is impossible to completely prevent intrusion of contaminants. Then, the impurities that have entered once are difficult to escape from the gap, and bite into the gap between the support and the sliding member,
It is not preferable because there is a possibility of causing a distortion. In moving the pre-cutting mechanism linearly laterally in the horizontal direction with respect to the machine traveling direction, biting of contaminants between the support body on the side of the machine that moves relatively and the sliding member on the side of the pre-cutting mechanism. Another object of the present invention is to provide a support structure having a configuration in which the occurrence of a twist is easily avoided.

[0004]

In order to achieve the above object, the technical means of the present invention is to dispose a pre-cutting mechanism in front of a threshing device mounted on an airframe, and to provide a pre-cutting mechanism and a threshing mechanism. In a combine harvesting pre-processing device in which a feed conveying device is installed between the devices and a pre-cutting mechanism is supported so as to be able to move to the left and right on the front side of the machine equipped with the threshing device, The lateral movement guide device supporting the left and right lateral movement with respect to the side is constituted by a pair of front and rear guide mechanisms, and the first guide mechanism on the rear side is provided on the body side and has a circular first contact surface. With the fitting structure of the guide body and the first moving guide body provided on the side of the pre-cutting mechanism and having a circular contact surface, the front-rear and up-and-down directions of the pre-cutting mechanism can be moved laterally with respect to the machine body. Should regulate the movement of The second guide mechanism on the front side is configured such that the second moving guide body provided on the side of the pre-cutting processing mechanism at the rear of the mowing device near the ground is spaced apart in the moving direction of the second moving guide body. The cutting pre-processing mechanism is linearly moved and guided in the left and right direction in the machine body traveling direction with respect to the machine body side by mounting and supporting the second support guide body having a pair of slippery supports arranged on the side. That is, it is configured.
According to a second aspect of the present invention, a pre-cutting mechanism is disposed in front of the threshing device mounted on the machine body, and a supply conveyance device is installed between the pre-cutting mechanism and the threshing device. In a combine harvester pre-processing device, the mechanism is supported to be able to move left and right and laterally in front of the fuselage equipped with a threshing device,
A lateral movement guide device that supports the pre-cutting mechanism so as to be able to move left and right with respect to the fuselage side is constituted by a pair of front and rear guide mechanisms, and a first guide mechanism on the rear side is provided on the fuselage side to be in contact with the body. A first support guide body having a circular surface,
The fitting structure with the first moving guide body, which is provided on the side of the pre-cutting mechanism and has a circular contact surface, restricts the front-rear and vertical movement of the pre-cutting mechanism while allowing the lateral movement of the pre-cutting mechanism with respect to the machine side. The second guide mechanism on the front side is provided on the side of the pre-cutting mechanism as a frame connected to and fixed to the left and right frames of the pre-cutting mechanism behind the mowing device near the ground. And a second support guide provided at an intermediate portion between the left and right frames of the pre-cutting mechanism on the body side, and the second support guide is formed to have a U-shaped cross section with an open front side, It is configured to restrict vertical movement while allowing lateral movement of the second moving guide body, and slidably mounts the second moving guide body at intervals in the lateral movement direction of the second moving guide body. Equipped with left and right sliding support A gap in the up-down direction is formed at a location where the upper surface of the second support guide and the lower surface of the second movable guide are opposed to each other between the left and right sliding supports, and a pre-cutting mechanism is provided. You may comprise so that it may move and guide linearly with respect to the fuselage side in the left-right direction of the fuselage advancing direction.

[0005]

The operation of the above-mentioned feature is as follows. a. Because the pre-cutting mechanism moves linearly in the machine width direction relative to the machine side, the direction of the cutting blade also changes due to changes in the cutting mode, such as switching from round cutting to middle cutting. There is no inconvenience of doing so. b. A pair of front and rear guide mechanisms is used to stably support a lateral movement guide device that supports the pre-cutting mechanism so as to be able to move left and right with respect to the fuselage side. The first movement guide body on the pre-processing mechanism side is configured to be movable in a state fitted to the first support guide body on the machine body side, and the second guide mechanism on the front side is the second movement on the cutting pre-processing mechanism side. Since the guide body is configured to be movable with the guide body mounted on the second support guide body side, the pre-cutting mechanism is accurately maintained in the front-rear and up-down directions, and the center of the guide body is Move smoothly along
With a simple structure, the horizontal position of the pre-cutting mechanism can be changed linearly in the horizontal direction with respect to the advancing direction of the machine, and the forward posture of the pre-cutting mechanism can be maintained as expected regardless of the horizontal movement. can do. c. The second guide mechanism on the front side includes a pair of slippery members arranged on the machine body side at a distance in the moving direction of the second movable guide body provided on the side of the pre-cutting treatment mechanism. Since it is configured to be movable in a state where it is placed and supported on the second support guide having the support, flexibility is provided in the assembly between the movable guide and the support guide on the second guide mechanism side. In addition to this, there is little risk of clogging of foreign substances at the second guide mechanism. In other words, when a guide mechanism having a fitting structure similar to that of the first guide mechanism is employed for the second guide mechanism, it is necessary to perform processing and assembly in a state where the parallelism between the two guide mechanisms is strictly maintained. In addition, durability and the like are required so that the parallelism is maintained even after long-term use. However, as described above, the second guide mechanism portion is provided with the second moving guide body. By mounting and supporting with a pair of slipping support members arranged on the fuselage side at intervals in the movement direction, manufacturing processing requiring parallelism with the first guide mechanism, ease of assembly accuracy is reduced. By preventing vertical movement of the pre-cutting mechanism due to unevenness in the field, damage to component parts, twisting, etc. can be prevented, and lateral movement can be performed without hindrance. Make sure there is a gap between the supports In, also less likely to occur clogging of Kyozatsubutsu. d. Further, as described in claim 2, in the second guide mechanism using the second support guide body having a U-shaped cross section whose front side is open, the second moving guide body is formed by using a pair of left and right smooth support bodies. It is relatively slidably mounted and supported, and a gap between the second support guide body and the second moving guide body is set to be small in a range corresponding to a location between the left and right slip support bodies. Rather, the width is increased by the thickness of the slipping support. As described above, if the gap at the portion corresponding to the lower side of the second guide mechanism is set to be wide, it becomes easier for foreign substances such as dust and mud to enter the gap to some extent. As a result, it is easy to cause clogging or biting due to the wide gap, so that it is possible to perform comfortable sliding.

[0006]

The effects of adopting the above configuration are as follows. That is, the lateral movement guide of the pre-cutting mechanism is structured such that the circular guide bodies of the first support guide body and the first movement guide body are fitted to each other, and the second movement guide body is mounted on the second support guide body. It is possible to change the horizontal position of the pre-cutting mechanism in the horizontal direction with respect to the advancing direction of the machine by linear lateral movement. Can be switched smoothly from turning to mowing work, etc., without changing the direction of the cutting blade, maintaining the intended posture of the pre-cutting mechanism, and the expected cutting and triggering action of the pre-cutting mechanism. This makes it possible to carry out satisfactorily, make it easy to carry out the supply from the harvesting as a good one, and make it possible to provide a pre-cutting processing device capable of effectively performing each work mode. As the first guide mechanism, a structure in which circular guide bodies are fitted to each other is adopted, and as the second guide mechanism, the movement of the second movable guide body provided on the side of the pre-cutting mechanism behind the mowing device near the ground. A second support guide having a pair of slip supports disposed on the fuselage side at intervals in the direction is employed, and the second moving guide is mounted on the pair of slip supports of the second support guide. By being configured to be movable in the state of being placed and supported, it is possible to provide flexibility in assembling between the moving guide body and the supporting guide body on the side of the second guide mechanism, thereby reducing manufacturing processing and assembling accuracy. It is possible to reduce the possibility of the occurrence of clogging of foreign matter in the second guide mechanism portion behind the mowing device near the ground, and realize a smooth and easy lateral movement of the heavy-weight mowing pre-processing mechanism. be able to. According to the second aspect of the present invention, as a second guide mechanism, a second support guide body is installed at an intermediate portion between the left and right frames of the pre-cutting mechanism, behind the cutting device near the ground, and forward. Adopts a structure that guides the second moving guide body that is connected to and fixed to the left and right frames of the pre-cutting mechanism in a state that it has an open U-shaped cross section and is placed on the slippery support arranged on the left and right sides As a result, the convenience of assembling, disassembling, and removing the pre-cutting mechanism is secured, the tolerance of manufacturing errors such as distortion and bending of component parts is increased, and obstacles due to contaminants such as dust and mud are also increased. This makes it possible to realize a lateral movement that is easy to move with little backlash. The second moving guide body is also used as a frame that constitutes the pre-cutting treatment mechanism, so it is also excellent in strength, and the number of horizontal frames can be reduced, so mud adhesion and winding of grain culm etc. Can be prevented. By changing the horizontal position of the pre-cutting mechanism relative to the machine traveling direction in a linear manner, the combined processing of the first guide mechanism and the second guide mechanism simplifies the manufacturing process and assembly as a whole. Thus, it is possible to satisfactorily perform the desired cutting and causing action of the pre-cutting mechanism. The reaping pre-processing mechanism can be smoothly and laterally moved with a good balance of right and left by a reasonable movement with less twisting.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 5, the combine includes a raising device 2 for raising the planted cereal culm weeded by the weeder 1, a cutting device 3 for cutting the cultivated culm after raising, and a cutting width for the cut cereal culm. Harvester including a left and right packer 4A and a left and right protrusion conveyor belt 4B as a converging / conveying device 4 that converges in the center of the center, and a feeding / conveying device 6 that conveys the collected grain culm toward a rear threshing device 5 equipped with a threshing feed chain 39 Pretreatment device A,
A driver's seat 7 is provided on the lateral side of the supply / conveyance device 6.

The above-mentioned weeding device 1, raising device 2, reaping device 3, conveyer 4 and the like are collectively referred to as a pre-cutting mechanism 17.
The lateral movement structure of the pre-cutting mechanism 17 with respect to the body 9 will be described. As shown in FIGS. 1 and 2, a vertical frame 10 is erected at the front end of the body 9 and a horizontal transmission case 11 is pivotally supported at the upper end of the vertical frame 10 so as to be rotatable around its horizontal axis. ing. A support 12 having an airframe longitudinal direction is fixed to an outer peripheral surface of the lateral transmission case 11 and a transmission shaft 13 of the lateral transmission case 11 and a transmission shaft 14 of the support 12 are connected to the bevel gear mechanism 1.
5 and receives power from an engine (not shown) at the input pulley 8 at the end of the lateral transmission case 11 and the transmission shaft 13.
It is configured to transmit to the transmission shaft 14 in the support. A cutting pre-processing mechanism 17 is attached to the distal end of the support 12 via a lateral movement guide device.

The mounting structure of the pre-cutting mechanism 17 will be described. The lateral movement guide device that supports the pre-cutting mechanism 17 so as to be able to move left and right with respect to the machine body 9 is configured by a pair of front and rear guide mechanisms. As shown in FIGS. 2 and 3, the first guide mechanism on the rear side of the guide mechanism is provided on the body 9 side and has a circular contact surface with the first support guide body 16, and a pre-cutting process. By the fitting structure provided with the first moving guide body 23 provided on the mechanism 17 side and having a circular contact surface, while allowing the lateral movement of the pre-cutting mechanism 17 with respect to the body 9 side, the front-back and up-down directions thereof It is configured to regulate the movement of The second guide mechanism on the front side mounts the second moving guide body 26 provided on the pre-cutting processing mechanism 17 side on the second support guide body 27 provided on the body 9 side, and It is configured to restrict vertical movement while allowing lateral movement of the body 26.

As shown in FIGS. 1 and 2, a sliding shaft 18 in a position along the machine body width direction slides in a direction of its own axis X at a position where the support 12 is attached to the first support guide 16. The passive bevel gear 19 and the supporting body transmission shaft 14 are movably supported by a bearing, and are provided at an intermediate portion formed in a hexagonal shape.
A drive bevel gear 20 is fixed to the end, and a transmission structure to the sliding shaft 18 is formed. The passive bevel gear 19 is fitted to the hexagonal intermediate portion of the sliding shaft 18 so as to be integrally rotatable, and is rotatably supported by the first support guide 16 via a bearing 21 so as to be rotatable only. A configuration is adopted in which 18 lateral sliding is allowed. The left and right ends of the sliding shaft 18 projecting left and right from the first support guide body 16 include:
Bevel gear transmission mechanisms 22, 22 for supplying power to the raising devices 2, 2 are provided, respectively. The sliding shaft 18
A first movable guide body 23 having a circular contact surface is pivotally supported by the first support guide body 16 via bushes 24 and 24 at the front side of the first support guide body so as to be slidable. Left and right support frames 25, 25 to which left and right weed support rods are fixed are connected and fixed to left and right ends protruding from 16. Further, a second moving guide body 26 is provided across the left and right support frames 25, 25 further forward than the first moving guide body 23, and further forward from the front end of the first support guide body 16. It is inserted into the extended second support guide body 27 having a substantially open U-shaped cross section from the front opening side, is loosely fitted and supported, and is configured to be slidable with respect to the second support guide body 27.

The second support guide 27 is shown in FIGS.
As shown in the figure, it is installed in the middle part of the left and right frames 25, 25 and formed into a substantially U-shaped cross section to form the support parts 38, 38, and is provided with a space on the left and right on the lower side of the inner surface, and is made of resin. The lubricating supports 40, 40 made of a bush are fixed.
The second moving guide body 26 is fitted inside so as to be able to slide laterally while being regulated in the vertical direction on the upper surfaces of the slipping supports 40 and the upper inner surfaces of the supporting portions 38.

Next, the lateral movement driving device of the pre-cutting mechanism 17 will be described. As shown in FIGS. 2 and 5, a screw shaft 28 having a large advancing angle is inserted into the first support guide body 16 in the left-right and lateral directions.
A female screw member 29 that meshes with the screw shaft 28 is provided on the left side surface. The left end of the screw shaft 28 is supported by a left support frame 25, and a driven bevel gear 30 is attached to a tip protruding from the left support frame 25. On the other hand, a drive motor 32 is installed above the driven bevel gear 30 and above and laterally above the left merging and conveying device 4B, and a downward output shaft of the drive motor 32 and the screw shaft 28 serve as a downward transmission mechanism 33. And transmission connection via the transmission shaft. In the figure, reference numeral 34 denotes a drive bevel gear which is attached to the lower end of the transmission mechanism 33 and meshes with the driven bevel gear 30. Reference numeral 31 denotes a coupling which connects the downward output shaft of the drive motor 32 and the transmission mechanism 33.

On the other hand, as shown in FIGS. 2 and 5, the first bevel gear case 35 covers the bevel gear transmission mechanisms 22 provided at both ends of the sliding shaft 18 and supports the first bevel gear case 35. The power transmission case 36 is erected as a stand, a second bevel gear case 37 is provided in the middle of the power transmission case 36, and the power is branched from the second bevel gear case 37, and the transfer belt 4B with projections is provided. And a branch structure for supplying power to the packer 4A. The mounting base is extended from the second bevel gear case 37, and the drive motor 32 is mounted on the mounting base.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a lateral movement guide device.

FIG. 2 is a partial cross-sectional plan view of the lateral movement guide device.

FIG. 3 is a front view of a main part of a second guide mechanism.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a front side view of the combine.

[Explanation of symbols]

 Reference Signs List 5 threshing device 9 body 12 support 16 first support guide 17 pre-cutting mechanism 23 first moving guide 25 frame 26 second moving guide 27 second support guide 40 smooth support

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa Sho 61-28308 (JP, U) Japanese Patent Publication Sho 53-27171 (JP, B2)

Claims (2)

(57) [Claims] 1. A threshing device (5) mounted on an airframe (9)
, A pre-cutting mechanism (17) is arranged in front of the machine, a feeder (6) is installed between the pre-cutting mechanism (17) and the threshing device (5), and the pre-cutting mechanism (17) is In a combine pre-cutting processing device supported on the front side of a body (9) on which a threshing device (5) is mounted so as to be movable left and right, the pre-cutting mechanism (17) is moved right and left with respect to the body (9) side. A lateral movement guide device for supporting the lateral movement is constituted by a pair of front and rear guide mechanisms, and the first guide mechanism on the rear side is provided on the body (9) side and has a circular contact surface. (16) and the pre-cutting mechanism (1)
7) With the fitting structure with the first moving guide body (23) provided on the side and having a circular contact surface, the cutting pre-processing mechanism (17) is allowed to move left and right and laterally with respect to the machine body (9) side, while being moved back and forth. And the second guide mechanism on the front side is a reaper (3) near the ground.
At the rear, the second moving guide body (26) provided on the pre-cutting mechanism (17) side is moved to the second moving guide body (26).
A pair of airframes (9) arranged at intervals in the movement direction
Mounting support on a second support guide body (27) having a smooth support
A combine pre-cutting processing device configured to move and guide the pre-cutting mechanism (17) linearly in the left-right direction with respect to the body (9) in the body moving direction. 2. A threshing device (5) mounted on an airframe (9).
, A pre-cutting mechanism (17) is arranged in front of the machine, a feeder (6) is installed between the pre-cutting mechanism (17) and the threshing device (5), and the pre-cutting mechanism (17) is In a combine pre-cutting processing device supported on the front side of a body (9) on which a threshing device (5) is mounted so as to be movable left and right, the pre-cutting mechanism (17) is moved right and left with respect to the body (9) side. A lateral movement guide device for supporting the lateral movement is constituted by a pair of front and rear guide mechanisms, and the first guide mechanism on the rear side is provided on the body (9) side and has a circular contact surface. (16) and the pre-cutting mechanism (1)
7) With the fitting structure with the first moving guide body (23) provided on the side and having a circular contact surface, the cutting pre-processing mechanism (17) is allowed to move left and right and laterally with respect to the machine body (9) side, while being moved back and forth. And a second guide mechanism on the front side is provided on the left and right frames (2) of the pre-cutting mechanism (17) behind the cutting device (3) near the ground.
5) A second moving guide body (26) provided on the side of the pre-cutting mechanism (17) as a frame to be connected and fixed to (25).
And a second support guide (27) provided at an intermediate portion between the left and right frames (25) and (25) of the pre-cutting mechanism (17) on the machine body (9) side. (27) is formed to have a U-shaped cross section with an open front side, and is configured to restrict vertical movement while allowing lateral movement of the second moving guide body (26). The left and right sliding supports (40) and (40) for slidably mounting and supporting the second moving guide body (26) at intervals in the horizontal movement direction of (26). Support guide (2) between the non-conductive supports (40).
7) A vertical gap is formed at the location where the upward surface and the downward surface of the second moving guide body (26) face each other, and the cutting pre-processing mechanism (17) is advanced with respect to the aircraft (9). Combine harvesting pre-processing device configured to guide linear movement in the horizontal direction.