JPS601561Y2 - Combine hoisting device - Google Patents

Description

[Detailed description of the invention] 1. Industrial application field This invention, for example, includes a culm pulling mechanism that raises 8 uncut culms almost simultaneously, and a culm pulling mechanism that raises 8 uncut culms almost simultaneously. The present invention relates to a relatively large combine harvester equipped with a cutting blade for cutting, a front conveyance mechanism, a horizontal conveyance medium conveyance mechanism, a vertical conveyance after conveyance mechanism, etc. for pinching and conveying the cut culm.

1. Conventional technology Conventionally, a technology has been proposed in which the culm lifting mechanism is driven by an engine together with each reaping part, and the speed of the pulling mechanism and the traveling speed are changed by an integrated control lever (for example, Japanese Patent Application Laid-Open No. 10022/1983) )was there.

Problems to be Solved by the First Invention In the prior art, the drive connection structure for the pulling mechanism whose drive input position is higher than that of each part of the reaping is complicated, and the speed adjustment range of the pulling mechanism with respect to the operating lever is limited. Since it was approximately constant, it was difficult to adapt the speed adjustment range to the properties of the cut husk and the variety, and it was difficult to easily obtain the optimum maximum raising speed for rice, wheat, etc. each time.

1. Means for Solving Problems The present invention solves the above-mentioned conventional drawbacks, and includes a hydraulic motor for driving a lifting mechanism for uncut culms, and a lifting speed change lever for adjusting the speed of the motor. is interlocked and connected to the traveling speed change lever in a freely engaging and detachable manner, and the lever is provided with an adjustment shaft member for changing the speed adjustment range of the hydraulic motor with respect to the lifting speed change lever.

1 action: The pulling mechanism can be easily driven by a hydraulic motor without the need for a complicated drive connection structure as in the past. By arbitrarily setting a proportional constant for relatively changing the adjustment range using the adjustment shaft member, and by changing the speed adjustment range of the hydraulic motor, it is possible to easily change the maximum pulling speed of each of the speed change levers, which is more convenient than before. It is easy to handle and can improve the lifting and conveying performance of the culm, and the lifting speed can be changed in proportion to the traveling speed by engaging and connecting each of the levers, and the work efficiency can be easily improved. By detaching each of the levers and operating them independently, it is possible to easily reduce the traveling speed while keeping the lifting speed above a certain level, for example, when reaping a fallen culm, etc., making it possible to easily reduce the traveling speed to suit various work situations. The amount to be used can be obtained by engaging and disengaging each of the levers accordingly.

1st example An embodiment of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is a schematic plan view of the combine harvester, and Fig. 2 is a side view of the same. A machine base supported via a lifting cylinder 5, 6 a reaping section for eight-row cutting supported on the front end of the machine base 3, and 7 incorporating a handling cylinder 8 and a processing cylinder 9 and mounted on the middle shaft of the machine base 3. The threshing section includes a feed chain 10 installed on the left side of the threshing section 7, a paddy tank 11 facing a grain lifting cylinder 12 for taking out grain from the threshing section 7, and a straw cutter 14 built in 13. A waste straw processing section 15 is connected to the end of the feed chain 10 to supply waste straw to the cutter 14; 16 is a waste straw processing section provided at the rear of the threshing section 7;
The engine 17 mounted on the front platform 3 is supported on the truck frame 1 via a strut 18, and the engine 16
A driver's cab is located at the front, 19 is a driver's seat, and 20 is a driving operation column.

FIG. 3 is a schematic plan view of the reaping section 6, showing a lifting mechanism 21 for raising eight uncut husk rows, a star wheel 22 for the eight rows, and a rake belt 23. A pre-processing section 24 having a pre-processing section 24, a transverse feeding section 25 that collects the cut husk culm at the center of the reaping section 6, a vertical conveyance section 26 that sends 8 rows of the cut husk culm to the threshing section 7, and a 8-row uncut husk culm. Cutting blades 27 that cut almost simultaneously
and the aforementioned parts 21, 24, 25, 26 and the cutting blade 27.
The reaping frame 28 is equipped with a reaping frame 28.

The upper rudder pulling mechanism 21 includes large left and right grass dividing plates 29, 29, medium-sized two-row grass dividing plates 30, small-sized single-row grass dividing plates 31, and lifting tines 32. and tine chain 3
The right end of the raising part 21 and the right outer side of the driving operation column 20 are made to substantially coincide with each other, and the right side end of the raising part 21 is made to substantially coincide with the right outer side of the operation column 20, and the right side end of the raising case 34 is inserted through the raising case 34 part at the right end. The configuration is such that the position of the base of the uncut culm can be confirmed from the driver's seat 19.

The pre-processing section 24 includes a pre-transport chain 35, 36, 37, 38 and a pre-transport tine 39 that sends two rows of cut husk culms.
, 40, 41, 42, and the chains 35 to 38 are interlocked and connected to one of a pair of meshing star wheels 22, 22, and a front conveyor tie 7 is provided above each chain 35 to 38.
39 to 42 are stretched in parallel, and the chains 35 to 42 are stretched in parallel.
38 and the first half of conveyance of tines 39 to 42 are positioned on substantially the same trajectory, and the culm side of the culm to be raked by the star foil 22 is connected to each chain 35 to 38, and the raking belt 23 The tip side of the shell culm to be raked is held by each of the tines 39 to 42, respectively.

The transverse feed section 25 includes a conveyor chain 43 during the left and right transverse feed phases.
．． 44, and conveyance tines 45 during the traversing phase.

Then, the feed end of the rightmost front conveyance chain 35 faces the feed start end of the right middle conveyance chain 43, the feed end of the center right front conveyance chain 36 faces the middle of the feed of the chain 43, and the left middle conveyance chain The feed end of the front conveyance chain 38 on the leftmost side faces the feed start end of the front conveyor chain 44, and the feed end of the front conveyance chain 37 on the left side of the center faces in the middle of the feed of the chain 44.

In addition, the terminal end of the middle conveyance chain 43 on the right side is brought close to the terminal end of the middle conveyance chain 44 on the left side in a stepped manner, and the terminal ends of the respective chains 43 and 44 are jointly connected to each other by an appropriate distance.
The culm of each row is sent, the culm of 4 rows of the chain 43 on the right side is inherited by the chain 44 on the left side, and the culm side of the culm of 8 rows is transferred to the end of the chain 44. do.

Furthermore, the feed end of the front transfer tine 39 on the rightmost side faces the feed start end of the middle transfer tine 45, and the feed end of the front transfer tine 40 on the right side of the center faces in the middle of the feed of the tine 45, and the front transfer tine 40 on the left side of the center The end of the feed of the leftmost front conveyance tine 42 is placed in the middle of the feed of the tine 41.

The vertical conveyance section 26 includes a rear conveyance chain 46 that is a vertical conveyance chain, and a rear conveyance tine 47 that is a tip conveyance tine, and connects the feed start end of the chain 46 to the feed end of the middle conveyance chain 44 on the left side. The feed end of the chain 46 is connected to the feed start end of the feed chain 10, the feed start end of the tine 47 is connected to the feed end of the middle conveyance tine 45, and the feed end of the front conveyance tine 41 on the left side of the center is connected. are placed near the feed start end of the tines 47, respectively.

The feeding end of the rear conveyance tine 47 is made to face the handling lower a of the threshing section 7.

Further, a lower hook 48 is provided at the front end of the machine stand 3, and an upper hook 50 is provided above the front end of the threshing section 7 via a support rod 49, and the horizontal shaft 28a at the base end of the reaping frame 28 and the lifting support rod 51 are provided.
The horizontal shaft 51a at the base end is removably engaged with each hook 48, 50, so that the entire reaping part 6 is formed to be removable.

As shown in FIG. 4, the drive shaft 5 is raised to the front cover 52 connecting the upper ends of the 8-strip raising case 34...
Each tine chain 33... is interlocked and connected to the drive shaft 53 via a sprocket 54... for tensioning the tine chain 33... and bevel gears 55... and 56... do.

A hydraulic motor 57 is connected to the drive shaft 53, and
The tine chain 33 includes a hydraulic pump 58 driven by the engine 16, a hydraulic switching valve 59 that controls application of pressure oil from the pump 58 to the motor 57, and a throttle valve 60 that adjusts the hydraulic pressure of the pump 58. ... is formed to be driven by hydraulic pressure.

Further, a hydraulic switching valve 61 for operating a main speed change operation of a hydraulic variable speed traveling transmission (not shown) is provided, and a main speed change lever 62, which is a traveling speed change lever interlocked with the switching valve 61, is installed near the driver's seat 19, and the lever The intermediate portion of the lever 62 is inserted into the shift guide groove 63, and the operation lens 64 is fixed to the upper end of the lever 62.

A lever 65 that is a speed adjustment lever for the motor 57 is arranged in parallel with the lever 62, and an interlocking rod 6 is connected to and disengaged from the operation camera 64 to appropriately interlock each lever 62, 65.
6 is attached to the upper end of the lever 65 by a pin 67, and the lever 65 is interlocked and connected to the output speed adjusting swash plate 57a of the motor 57 via a wire 68, etc., and the linking rod 66 is connected to the operation camera 64. As a result, the main shift lever 62 is pulled up in conjunction with the traveling speed change to displace the speed change lever 65, increasing or decreasing the speed of the motor 57 in proportion to the traveling speed of the combine, that is, at the same time as the traveling speed is changed. The hoisting tine 32 is formed so as to change the hoisting speed and drive the hoisting tines 32 at a speed corresponding to the traveling speed.

As shown in FIG. 5, a connecting plate 69 is fixed to the lever 65, and a long hole 70 is formed parallel to the axis of the lever 65.
is formed in the connecting plate 69, a pin 71 is loosely inserted into the elongated hole 70, and a wire holder to be fixed to the tip of the wire 68 connects a plate 72 to the pin 71, and a support plate is provided with an adjusting nut 73. An adjustment shaft 76 is provided which is an adjustment shaft member having an adjustment screw 75 fixed to the lever 65 and screwed into the nut 73.
A fixing plate 77 at the lower end of 6 is connected to the pin 71, and the adjustment shaft 76 is moved up and down along the lever 65 by operating the nut 73, and the stroke of the wire 68 is adjusted for a certain amount of rocking displacement of the lever 65. The shaft 76 changes the speed adjustment range of the hydraulic motor 57 with respect to the lifting gear shift lever 65, and the speed adjustment range of the hydraulic motor 57 with respect to the pulling gear shift lever 65 is changed by the shaft 76. It is formed so that the speed proportionality constant can be changed as appropriate, and the pulling speed can be changed most suitable for the type and properties (elasticity, shedding ability, culm length, etc.) of the crops to be harvested by the combine harvester.

The present invention is constructed as described above, and each grass dividing board has 29.30
．． The tip side of the uncut grain culm that enters between the grain culms 31 is erected by each lifting tine 32, and the culm side of the grain culm is held by the rake belt 23 and the star foil 22, and the grain culm is At the same time, the cutting blade 27 cuts the base of the stock, and the cut grain culm is transferred to the front conveyor chains 35 to 38 and the tine 3.
9 to 42, then intermediate conveyor chains 43, 4
4 and the left and right culms inherited by the tines 45 are merged at the center of the cross-feeding section 25, and the 8 strands of shell culms are inherited by the rear conveyance chain 46 and the tines 47. The culm base of the shell culm of the row is the starting point of feed chain 10,
The tips of the culms are conveyed and supplied to the handling lower a through the tines 47, and at this time, the gear shift lever 6 is raised.
The stroke of the wire 68 relative to 5 is adjusted appropriately via the adjustment shaft 76. Also, the connecting rod 66 is engaged with the operation lever 64 of the main shift lever 62 to connect each lever 62 and 65, and the main shift lever 62 is used to control the movement of the wire 68. When the speed is changed, the output speed of the hydraulic motor 57 is automatically changed in conjunction with this, and the lifting speed of the lifting tine 32 is changed in proportion to the traveling speed.

Furthermore, when reaping a fallen culm, the traveling speed is switched to an extremely low speed, but at this time, the connecting rod 66 connecting the traveling and lifting speed change levers 62, 65 is disengaged, and the lifting speed is increased above a certain level. Reaping work is carried out by arbitrarily reducing only the traveling speed while maintaining the same speed.

Note that when traveling in reverse or on the road, there is no need to shift gears by pulling the gear lever 6.
It is also possible to separate from 2 and operate only the travel gear shift lever independently.

1. Effects of the invention As is clear from the above embodiments, the present invention includes a hydraulic motor 57 that drives the culm lifting mechanism 21 that pulls up uncut culms, and a lifting speed change that adjusts the speed of the motor 57. An adjustment shaft 76 that removably connects the lever 65 to the traveling speed change lever 62 and changes the speed adjustment range of the hydraulic motor 57 with respect to the lifting speed change lever 65.
The lever 65 is equipped with an adjusting shaft member such as the above, and the lifting mechanism 21 can be easily driven by the hydraulic motor 57 without the need for a complicated drive connection structure as in the past. A proportional constant for changing the speed adjustment range of the pulling speed by the speed change lever 65 relative to the traveling speed can be arbitrarily set by the adjustment shaft member 76, and by changing the speed adjustment range of the hydraulic motor 57, the above-mentioned The maximum hoisting speed can be easily changed by each speed change lever 62, 65, and the handling is easier than before, and the culm hoisting and conveying performance can be improved. While it is possible to easily improve work efficiency by changing the lifting speed in proportion to the traveling speed, it is also possible to easily improve work efficiency by separating the levers 62 and 65 and operating them independently. When mowing, etc., it is possible to easily reduce the traveling speed while keeping the lifting speed above a certain level, and the levers 62 and 65 can be engaged and disengaged to use them as desired depending on various work situations. It has practical effects such as:

[Brief Description of the Drawings] Figure 1 is a plan view of a combine harvester showing an embodiment of the present invention;
Figure 2 is the same side view, Figure 3 is a plan explanatory diagram of the reaping section, and Figure 4 is the same side view.
The figure is a system explanatory diagram of the main part, and FIG. 5 is a partial side view thereof. 21... Culm lifting mechanism, 57... Hydraulic motor, 62... Main gear shift lever (traveling gear lever), 65... Pulling gear lever , 76...
... Adjustment shaft (adjustment shaft member).

Claims (1)

[Scope of utility model registration request] It is equipped with a hydraulic motor 57 that drives a culm lifting mechanism 21 that raises uncut culms, and a lifting speed change lever 65 that adjusts the speed of the motor 57 is interlocked and connected to a traveling speed change lever 62 in a freely engaging and detachable manner. A lifting device for a combine harvester, characterized in that an adjustment shaft member 76 for changing the speed adjustment range of the hydraulic motor 57 with respect to the lifting speed change lever 65 is provided on the lever 65.