JPS5850820Y2 - Combine harvester reaping drive device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a reaping drive device for a combine harvester.

In conventional reaping rotary combine harvesters, a reaping input belt is stretched between an output pulley fitted on an output shaft such as a chisel shaft and a reaping input pulley fitted on a reaping input shaft to provide driving force to the reaping section. However, by providing the reaping input shaft on the same axis as the rotational fulcrum shaft of the reaping section, if the input pulley is pivotally supported in the middle of the fulcrum shaft, the tension on the pulley will be reduced. The operation of attaching the reaping input belt is extremely complicated, and therefore, in order to easily attach and detach the belt, the attachment positions of the pulleys have been limited to both ends of the rotation fulcrum shaft.

Further, a lifting connecting pipe that supports the culm pulling device is connected to the opposite end of the rotation fulcrum shaft, and a vertical conveyance device that feeds the culm to the feed chain is connected to the other end of the rotation fulcrum. , in a structure in which a reaping drive connecting pipe provided with a cutting blade etc. is connected to the middle of the rotational fulcrum shaft, by connecting the lifting connection pipe and the vertical conveyance device to both ends of the rotational fulcrum shaft, the ends of the rotational fulcrum shaft can be connected. In some cases, it may be difficult to pivotally support the reaping input pulley in the area, and if the reaping drive connection pipe that transmits this driving force to the cutting blades, etc., and the reaping input pulley are located far apart, the driving force of the cutting blades, etc. Since this is larger than the lifting and vertical conveyance devices, it is necessary to make the transmission shaft for the cutting blades etc. large in diameter and long, and connect it to the reaping input pulley. was difficult to simplify.

The present invention solves the above-mentioned conventional drawbacks, and a reaping input pulley is attached to the rear projecting part of the gear case that is provided between the rotational fulcrum shaft and transmits driving force to each part of the reaping section, and the reaping input pulley is installed between the rotational fulcrum shaft and The reaping input pulley is pivotally supported via the gear case at a position closest to the axial center position different from the axial center position, and the culm lifting device and the vertical conveying device can be easily connected to both ends of the rotation fulcrum shaft. At the same time, the reaping input pulley can be mounted close to the reaping drive connecting pipe, and the connecting pipe and input pulley, which require a large transmission force, can be connected at the shortest distance, compared to the conventional method. It is possible to simplify the drive system and improve transmission efficiency,
It is an object of the present invention to provide a reaping drive device for a combine harvester in which the rotation fulcrum shaft is made short so that it can be functionally supported.

An embodiment of the present invention will be described below based on the drawings.

Fig. 1 is a side view of a combine harvester equipped with a reaping drive device according to the present invention, and Fig. 2 is a layout diagram seen from a plane. 3 is a truck frame equipped with the crawlers 2, 2 on both left and right sides; 4 is a reaping drive bevel case that serves as the rotational fulcrum shaft of the reaping section A; on the left side of this case 4 is a gear case 5; A vertical transport drive case 6 is installed in series, and a lifting connection pipe 7 and a reaping drive connection pipe 8 are attached to the case 4.

Reference numeral 9 denotes a lifting hydraulic cylinder that lifts the reaping section A upward using the bevel case 4 as a fulcrum, and this cylinder 9 is stretched between the pipe 8 and the truck frame 3.

Reference numeral 10 denotes a threshing machine mounted on the machine base 1, inside which a handling barrel 11 is mounted on a shaft along the longitudinal direction of the machine base 1.

Reference numeral 12 designates an E-shaped reaping frame, which is equipped with a grass dividing plate 13 at its front end and a cutting blade 14 slightly behind the grass dividing plate 13 to constitute a reaping device 15. ing.

Reference numeral 16 denotes a culm lifting device installed at a steep angle on the reaping device 15, and 17 a feed chain, which is connected to the left side of the threshing machine 10 to cut the straw from the joint of the vertical conveyance device, which will be described later. The cutter 19.20 in the center of the device 18 is suspended in a manner that is low in the front and high in the rear.

Here, the straw cutting device 18 is installed above the rear of the threshing machine 10.

Reference numeral 21 denotes a step extending from the truck frame 3 to the front right side of the machine 1. A driver's seat 22 is provided on this step 21 via a seat frame, and a driving operation section is installed in the front of the driver's seat 22. 23 is formed.

That is, the operation column 24 is installed upright on the step 21, and the reaping latch lever 25 with a two-stage height changeover system and the left and right side clutch levers 26, 27 are installed on the operation panel surface from inside the operation column 24. In addition, an accelerator lever 28 is installed on the right side of the operation column 24 to constitute a driving operation section 23.

Reference numeral 29 denotes a paddy storage device for six bags located above the right end of the machine stand 1, and a paddy receiving stand 30 is provided below this device 29, while the paddy storage device 29 is located above the right end of the machine stand 1. The structure is such that the fine grains are fed into the paddy storage device 29 via the grain-frying conveyor device 31.

32 is the engine mounted on the rear left side of the aircraft platform 1; 33
3 is a counter case, 34 is a hydraulic system, 35 is a traveling transmission, and 36 is a driving sprocket for the running roller 2. This sprocket 36 is connected to the traveling transmission 35 via a final case 37.

Further, 38 is an idler that supports the end of the roller 2 that runs together with the sprocket 36, and 39... is a plurality of track rollers that are brought into sliding contact with the lower inner surface of the roller 2 that runs.

Next, to explain the shell culm conveying device, a knife head 40 is screwed onto the cutting blade 14 on the movable side, and this head 40 is moved to the cutting blade 14 on the fixed side by the cutting blade drive fulcrum lever 41. The upper part is configured to reciprocate, and
A star wheel 43 for scraping the root side of the culm is rotatably installed above the cutting blade 14 via a star wheel shaft 42.

Further, on the star foil 43 there are transport pulleys 44°45.
A scraping bevel 46 is stretched between each of these pulleys 44 and 45 to constitute a scraping device.

Further, between the star foil 43 and the scraping belt 46, a lower conveying chain 47 for sandwiching and conveying the culm base of the culm is stretched in a manner that is low in the front and high in the rear.
An upper conveying device 48 for pinching and conveying the tip side of the culm is hung in an inclined manner on the upper part of the culm.

The starting end of a vertical conveying device 49 faces the rear of the lower conveying chain 47, and the terminal end of this device 49 extends toward the starting end of the feed chain 17. As is clear from Figure 2, the reaping part A is installed on the rotation fulcrum shaft 4 horizontally suspended at the front end of the threshing machine 10 so as to be able to rise and fall freely.
A lifting connection pipe 7 that supports the culm lifting device 16 is connected to one end of the rotation fulcrum shaft 4, and a vertical conveyance device 49 that feeds the culm to the feed chain 17 is connected to the rotation fulcrum shaft 4 and the other end. At the same time, a reaping drive connecting pipe 8 including a cutting blade 14 and the like is connected to the middle of the rotation fulcrum shaft 4.

After the culm cut by the cutting blade 14 is scraped in by the raking device, the culm base of the culm is transferred to the lower conveyance chain 47 and the vertical conveyance device 49, and the tip side is transferred to the upper conveyance device 48. After being pinched and conveyed to the feed chain 17 side, the straw cutting device 18 is passed through the chain 17.
It is designed to be transported to

A lifting drive case 50.51 is provided on the back side of the upper end of the culm lifting device 16.16, and each of these cases 50.5
The left and right lifting devices 16 are installed by stretching the lifting shaft outer cylinder 52 between
．． 16 are configured to be driven simultaneously.

By the way, a worm case 54 is connected to the tip of the reaping drive connecting pipe 8 through a gear box 53, and a link ball 56 is connected to a shaft protruding from inside the case 54 to the outside of the case through a cutting blade crank 55. A crank rod 58 is stretched between this link ball 56 and another link ball 57 provided on the cutting blade drive fulcrum lever 41 to drive the cutting blade 14.

Next, the power transmission system from the engine 32 to each part will be described.

Reference numeral 59 denotes an engine output pulley having two grooves. A V-belt 61 is connected between one groove of this pulley 59 and a counter input pulley 60, and a large diameter pulley 62 is connected between the other groove of the pulley 59 and a large diameter pulley 62. A V-belt 63 is stretched between each.

Three ■ pulleys 65, 66, and 67 are fitted to the shaft 64 fitted with this large diameter pulley 62, and these three ■
The handling cylinder 11 is interlocked with a pulley 67 among the pulleys via a V-belt 68, a threshing manual pulley 69, a threshing input shaft 70, a gear box 71, and a handling cylinder shaft 72.

In addition, the V pulley 74 fitted to the cutter shaft 73 and the
A V-belt is stretched between the pulley 66 and the straw cutting device 1.
8.

Further, a V
It is configured to drive each element by stretching a belt 78.

Furthermore, a V-belt 81 is connected between the first counter output pulley 79 and the driver covert pulley 80.
A V-belt 8 is installed between the 1-ri 82 and the hydraulic input pulley 83.
4 are stretched across each other to transmit the output of the engine 32 to the traveling transmission 35 and the hydraulic system 34.

In addition, there are two pulleys 86 on the Karaoke shaft (output shaft) 85.
On the other hand, a reaping input pulley 89 having two grooves 89 is fitted with a key to the reaping input shaft 88 mounted on the gear case 5, as shown in FIG.
A reaping input belt 90 is stretched between the V pulley 87 and one groove of the reaping input pulley 89, and a reaping input pulley belt 91 is stretched between the V pulley 87 and the other groove of the reaping input pulley 89. As is clear from FIG. 2, the reaping input pulley 89 is attached to the rear projecting portion of the gear case 5 provided in the middle of the rotational fulcrum shaft 4, and the reaping input pulley 89 is located closest to the rotational fulcrum shaft 4 at a different axis position. the gear case 5 in the position
The reaping input pulley 89 is pivotally supported via the reaping input pulley 89.

The output shaft 85 is mounted at a position that satisfies the following conditions.

In other words, a straight line X connecting the reaping rotational fulcrum P shown in FIG. 3 and the center point of the output shaft 85 such as a winnowing shaft, is centered on the reaping rotational fulcrum P and the reaping part A is as shown by the angle β in the same figure. The opening angle α of the reaping input shaft 88 caused by the maximum elevation is set on a line that divides the input shaft into thirds (ie, on the X-ray).

When the output shaft 85 is mounted on the X-ray in this way, the reaping section can be raised and lowered relative to the combine harvester body from the maximum lowered position (see the solid line in Figure 3) to the maximum raised position (see the imaginary line in Figure 3). Since the belt center distance of 90.91 can be kept the same even when the reaping input bell) be able to.

As is clear from the above embodiments, the present invention has the reaping section A movably mounted on the rotational fulcrum shaft of the reaping drive bevel case 4 which is horizontally suspended at the front end of the threshing machine 10, and supports the culm lifting device 16. A lifting connection pipe 7 is connected to one end of the rotation fulcrum shaft 4, and a vertical conveyance device 49 for feeding the culm to the feed chain 17 is connected to the other end of the rotation fulcrum shaft 4. A reaping drive connecting pipe 8 having a cutting blade 14, etc. is connected to the middle of the rotation fulcrum shaft 4, and a drive shaft, a bevel gear, etc. are installed inside the rotation fulcrum shaft 4 and each of the connection pipes 7, 8, etc., respectively. In the structure for transmitting driving force to each part of the reaping machine, a reaping input pulley 89 is attached to the rear projecting part of the gear case 5, which is provided in the middle of the rotation fulcrum shaft 4 and transmits the driving force to each part of the reaping machine, and The reaping input pulley 89 is pivotally supported via the gear case 5 at a position closest to the shaft center position different from the shaft center position 4, and the culm lifting device 16 and the vertical conveyance device 49 are connected to the rotation fulcrum shaft 4. The reaping input pulley 89 can be easily connected to both ends, and the reaping input pulley 89 can be installed close to the reaping drive connecting pipe 8, and the connecting pipe 8 and input pulley 89, which require a large transmission force, can be connected at the shortest distance. It is possible to simplify the drive system connected to the input pulley 89 and improve the transmission efficiency compared to the conventional method, and the rotation fulcrum shaft 4 can be shortened and functionally supported. It has remarkable effects such as being practical.

[Brief explanation of the drawing]

FIG. 1 is a side view of a combine harvester showing an embodiment of the present invention, FIG. 2 is a schematic plan view, and FIG. 3 is a side view of the main parts. 4... Reaping drive bevel case (rotation fulcrum shaft),
5... Gear case, 7... Pulling connection pipe, 8... Reaping drive connection pipe, 10...
...Thresher, 14...Mower blade, 16...
... Culm pulling device, 17 ... Feed chain, 49 ... Vertical conveyance device, 89 ... Reaping input pulley, A ... Reaping section.

Claims (1)

[Scope of utility model registration request] The reaping part A is installed on a rotating fulcrum shaft 4 horizontally suspended at the front end of the threshing machine 10 so as to be able to rise and fall freely, and a lifting connection pipe 7 that supports a culm lifting device 16 is connected to one end of the rotating fulcrum shaft 4. and a vertical conveying device 4 for feeding the culms to the feed chain 17.
9 is connected to the other end of the rotation fulcrum shaft 4, and a reaping drive connecting pipe 8 having a cutting blade 14 etc. is connected to the middle of the rotation fulcrum shaft 4, and the rotation fulcrum shaft 4 and each of the connection pipes In a structure in which a drive shaft, a bevel gear, etc. are installed inside the 7°8, etc., to transmit driving force to each part of the reaping machine, the rear part of the gear case 5 is installed in the middle of the rotation fulcrum shaft 4 and transmits the driving force to each part of the reaping machine. The reaping input pulley 89 is attached to the protruding portion, and the reaping input pulley 89 is pivotally supported via the gear case 5 at a position closest to the rotational fulcrum shaft 4 at a different axis position. Features of the combine harvester's reaping drive device.