JP4890692B2 - Combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pre-processing section drive structure for a combine that includes a pre-processing section HST that drives the pre-processing section so as to be capable of shifting and a pre-processing section transmission.
[0002]
[Prior art]
Conventionally, a traveling device is a hydraulic transmission device (traveling unit HST) for traveling with a combine in which a traveling unit base is provided with a pre-processing unit and a threshing unit in the front-rear direction and a control unit, an engine, a dredging processing unit, and the like are arranged on the other side. As described in Japanese Patent Publication No. 59-30372, it is already known that the pre-processing unit can be driven to change speed and the pre-processing unit can be driven by a pre-processing hydraulic transmission device (pre-processing unit HST). Yes.
The driving structure shown in the above publication changes the HST swash plate angle of the traveling unit HST and changes the HST swash plate angle of the pre-processing unit HST. Then, the swash plate angle adjustment lever that controls the pretreatment section speed adjustment operation is connected to each other by a link mechanism, so that the pretreatment speed and the traveling speed are linked to perform the cutting and threshing operation.
[0003]
[Problems to be solved by the invention]
However, when the traveling unit HST and the pretreatment unit HST having the configuration as described in the above publication are installed in the combine, the pretreatment unit HST uses a space (space portion) formed between the pretreatment unit and the threshing unit. The pre-processing unit HST in which the swash plate angle adjusting lever is connected by the link mechanism is limited by the installation position, and the space for the maintenance work around the pre-processing unit HST is narrowed. There are drawbacks in that the structure for preventing contact with the pre-processing unit and the structure for preventing sawdust falling from above are complicated for the HST and the link mechanism.
Further, when it is desired to perform maintenance work such as cleaning and adjustment of the pretreatment unit HST and overhaul repair, a sufficient space for maintenance cannot be secured on the side of the pretreatment unit HST, so that the maintenance work of this part is difficult. There is a problem such as.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, the combine pre-processing unit drive structure according to the present invention firstly includes a pre-processing unit 11 on the front side of the traveling machine base 10 having the traveling device 1a and a rear side of the pre-processing unit 11. The threshing unit 3 is provided on the left and right sides of the traveling machine base 10 , the control unit 13 and the engine 14 are disposed on the left and right sides, and the traveling device 1 a, the preprocessing unit 11, and the threshing unit 3 are driven by the power from the engine 14. configured to, in combine provided with the preprocessing section HST20 for transmission drive preprocessing unit 11 the travel device 1a and the travel unit HST4 for variable speed drive, and shift in the pretreatment unit HST20 and pretreatment section HST20 power disposed to the pre-processing unit transmissions 2a for outputting the pre-processing unit 11 side, to the engine 14 side of the pre-processing unit 11 and the space portion H formed between the threshing section 3, the preprocessing unit transmitter The pre-processing unit HST20 is attached and fixed to the engine 14 side of the pre-processing unit 2a, and the shift power from the pre-processing unit HST 20 is input from the engine 14 side of the pre-processing unit transmission 2a, and to the engine 14 side of the pre-processing unit transmission 2a. A preprocessing drive shaft 25 for driving output to the preprocessing unit 11 is provided, and the trunnion shaft driving mechanism 5 for operating the trunnion shaft 53 of the preprocessing unit HST20 is installed on the front side of the preprocessing unit HST20.
[0005]
Secondly, the trunnion shaft drive mechanism 5 is configured such that the control gear 65 is engaged with a pinion gear 63 provided in the trunnion motor 6 and the trunnion shaft 53 is operated by the control gear 65, and the trunnion shaft drive mechanism 5 is configured. The control gear 65 is fitted to and supported by the trunnion shaft 53 in a state of being attached to the pretreatment unit transmission 2a side.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a combine provided with a pre-processing drive device 2 as a pre-processing unit driving structure according to the present invention in the transmission system shown in FIG. 3, and this combine 1 is arranged in the same manner as the conventional one. With the structure, a pretreatment unit 11 and a threshing unit 3 are provided in a front-rear direction on a traveling machine base 10 provided with a crawler type traveling device 1a, and a control unit 13 and an engine 14 are provided behind the pretreatment unit 11 on the other side. , The Glen tank 15 is mounted, and the engine 14 is located below the driver seat 13a of the control unit 13 and the engine output shaft 14a is formed between the preprocessing unit 11 and the threshing unit 3 on the space H side. It is placed toward the.
[0007]
As shown in FIG. 3, the transmission system of the combine 1 branches and transmits the traveling unit transmission system, the threshing unit transmission system, the pretreatment unit transmission system, and the dredge processing unit transmission system from the engine output shaft 14 a of the engine 14. The travel output pulley 40 is provided on the engine output shaft 14a, and the HST input shaft 41 of the traveling unit HST4, which is a hydraulic transmission device for traveling as a traveling unit transmission system, is belt-transmitted from the traveling unit HST4 to the traveling transmission 42. Thus, the traveling device 1a is driven so as to be capable of traveling speed change operation.
[0008]
Further, from the work machine pulley 30 provided on the engine output shaft 14a, the work machine transmission system composed of the threshing part transmission system and the pretreatment part transmission system is used as the countershaft for the blower fan shaft 31 of the threshing part 3 as its input. The belt 32 is transmitted to the pulley 32, and a soot processing unit transmission system of a different system is transmitted from the soot processing unit pulley 15a provided on the engine output shaft 14a so that the Glen tank 15 can be independently operated by the belt transmission. Yes.
And the said threshing part transmission system is the threshing selection part which consists of the barrel 33, the rocking | swiveling selection part 33a, the waste chain 34, etc. by the transmission structure similar to the conventional thing from the ventilation fan shaft 31 which has the ventilation fan 31a. To drive.
[0009]
On the other hand, the pre-processing unit transmission system starts from the pre-processing unit pulley 35 provided on the blower fan shaft 31, and the input pulley with cooling fan of the pre-processing unit HST20 including the trunnion shaft drive mechanism 5 described later with reference to FIGS. 22, the HST input shaft 21 is belt-transmitted, and a lower drive side is provided from a speed change drive gear 24 provided on the output shaft 23 of the preprocessing unit HST20 via a reduction gear mechanism 2b configured in the preprocessing unit transmission 2a. The input pulley 29 from the pretreatment drive shaft 25 is transmitted to the belt by the output pulley 26, and the output sprocket 28 attached to the shaft end from the feed chain drive shaft 27 is moved to the handling chamber of the threshing portion 3. The feed chain 29 arranged alongside is driven.
[0010]
In addition, a clutch mechanism such as a belt tension clutch system is provided in the belt transmission portion of each transmission system, and a traveling clutch pedal 41L, a threshing portion lever 3L, a preprocessing portion lever 11L, each clutch mechanism installed on the control portion 13 side, It is configured to be connected to the scissor processing portion lever 15L so that the transmission cut-off operation is possible.
4L is a main transmission lever that changes the HST swash plate angle of the traveling unit HST4 to control forward / reverse travel and travel speed adjustment.
[0011]
Further, in the above transmission system, a traveling rotation sensor 4S is provided on the traveling transmission shaft (not shown) of the transmission transmission path of the traveling transmission 42 having the traveling portion HST4, and the substantial traveling speed of the airframe is determined by the traveling transmission shaft. Detection is based on the number of revolutions.
Further, a preprocessing rotation sensor 2S is provided at the shaft end of the preprocessing drive shaft 25 of the preprocessing unit transmission 2a having the preprocessing unit HST20. This preprocessing speed is detected by the number of rotations of the preprocessing drive shaft 25.
[0012]
The traveling rotation sensor 4S and the pre-processing rotation sensor 2S are connected so as to input a detection signal to a microcomputer unit (not shown) which is a control device, and are controlled by a program set in the microcomputer unit. The trunnion shaft drive mechanism 5 for driving the trunnion shaft 53 as a preprocessing speed control means indicated by 6 is configured to drive the trunnion motor 6 forward and reverse, and a control gear 65 engaged with the pinion gear 63 is preprocessed. The HST swash plate angle is adjusted by driving the trunnion shaft 53 of the part HST20 in the forward and reverse directions, and the preprocessing speed is synchronized with the traveling speed of the airframe set by the main transmission lever 4L to change the traveling speed. The cutting chain corresponding to the speed is performed, and the harvested cereals are fed from the cereal carrier 12 to the feed chain 2 at an appropriate transport speed. Supplied to the threshing unit 3 via, and to efficiently smoothly as the threshing work to prevent grain 稈詰 Mariya 扱残 and the like in the threshing section 3.
[0013]
Then, during the normal mowing and threshing operation (combine operation) as described above, the preprocessing speed control means in this embodiment performs the operation up to a predetermined high speed range as the traveling shift (vehicle speed) is increased. The processing speed is also increased proportionally, and the speed is maintained without increasing the preprocessing speed from a predetermined maximum speed in an area where the vehicle speed is higher than that.
In addition, when the machine is operated backward during the harvesting and threshing operation, or when the pillow harvesting cereal husk is handled and threshing, for example, the microcomputer unit is instructed to detect and indicate that it is in the backward threshing (non-reaching threshing) operation state. The instruction means drives the preprocessing unit 11 by constant speed rotation in a predetermined low speed range without relating the vehicle speed and the preprocessing speed, so that the cereal is slowly fed to the threshing unit 3 and threshed. ing.
[0014]
In addition, the pretreatment unit transmission 2a is mounted on a support frame 10a erected from the traveling machine base 10 on the back side of the position close to the threshing front wall 36 in the space H formed on the front side of the threshing unit 3. 2 to 5, the pretreatment unit HST20 is detachably attached and fixed to the upper side surface of the pretreatment unit transmission 2a as shown in FIGS. 2 to 5 while the trunnion shaft is driven on the other side surface. An attachment member 51 for attaching and fixing the mechanism 5 is attached and fixed.
The trunnion shaft drive mechanism 5 has one side of the flat plate-like machine base 50 attached to the front side of the mounting member 51 and detachably attached by a mounting screw 52, and the other side to the preprocessing unit HST20. The trunnion shaft 53 protruding from the front side to the front side is configured to be stably and detachably supported.
[0015]
The trunnion shaft drive mechanism 5 and its mounting structure will be described with reference to FIGS. 4 to 6. The trunnion shaft drive mechanism 5 can be attached to and detached from a motor base 50 a formed on the front side of the plate-like machine base 50. A motor shaft 60 that is attached and fixed to the trunnion motor 6 and rotates in the forward and reverse directions according to a control command of a microcomputer unit, which will be described later, is provided in a direction substantially parallel to the trunnion shaft 53 toward the preprocessing section HST20. Is engaged and connected to the end of the pinion shaft 62 pivotally supported by the metal portion 61 so that the pinion gear 63 formed at the other end of the pinion shaft 62 can be rotated to the other side of the machine base 50. Is engaged with a fan-shaped control gear (sector gear) 65 that is pivotally supported on the shaft.
Further, the control gear 65 has one side of the gear shaft 66 pivotally supported by a metal portion 67 provided on the machine base 50, and the other side is detachably fitted to the trunnion shaft 53, and both are attached to the mounting screw. 68 is fastened and fixed.
[0016]
With this configuration, the trunnion shaft drive mechanism 5 is attached with a long support distance (span), in which the machine base 50 is formed between the mounting member 51 side of the preprocessing unit transmission 2a and the trunnion shaft 53. The trunnion motor 6 and the pinion gear 63 and the control gear 65 are installed in a unified manner on the front and rear sides of the machine base 50 in the span, stably mounted and supported across the preprocessing section transmission 2a and the preprocessing section HST20. I have to.
Accordingly, while reducing the size of the trunnion shaft drive mechanism 5, the pretreatment unit HST 20 and the front side of the pretreatment unit HST 20 are laterally adjacent to each other, and the three members are compactly integrated and installed near the front side of the front side wall 36. Thus, the above-mentioned three parties are sufficiently secured in the space portion H in front and side maintenance spaces.
[0017]
The control gear 65 has an arcuate guide groove 55 centered on the gear support shaft 66 in the middle of the plate-like body, and a guide pin 56 protruding from the machine base 50 in the guide groove 55. Thus, the fan-shaped control gear 65 is smoothly rotated.
Further, the mounting member 6 in the illustrated example has a hollow mounting frame 57 integrally extending on one side thereof, and a flat plate with the control gear 65 and the pinion gear 63 placed in the mounting frame 57. The other side of the machine base 50 is attached and supported also by the attachment screw 52, so that the trunnion shaft drive mechanism 5 is attached and fixed to the attachment member 51 in a stable and detachable manner. It can be removed easily toward the front side.
Further, the pretreatment unit HST20 is reinforced and supported by a support rod 10b extending from the front side wall 36 side.
[0018]
The combine 1 comprised as mentioned above drives a traveling part transmission system, a pre-processing part transmission system, a threshing part transmission system, and a drought processing part transmission system from the engine 14 via each clutch mechanism, and performs a cutting and threshing operation. At this time, the vehicle speed of the combine 1 is set by the traveling unit HST4 by operating the main speed change lever 4L, and the preprocessing speed of the preprocessing unit 11 corresponds to the vehicle speed set by the traveling unit HST4, and the preprocessing speed control means The trunnion shaft drive mechanism 5 rotates the trunnion motor 6 forward and backward, operates the trunnion shaft 53 via the pinion gear 63 and the control gear 65, and changes the swash plate angle, thereby driving the preprocessing unit HST20 to increase and decrease the speed. In addition, it is possible to follow and set in synchronization with the appropriate pre-processing speed for the vehicle speed, and to efficiently and smoothly carry out the cutting work that prevents the planted cereals from being pushed down and pulled out, and to order the harvested cereals in the threshing unit 3 in an orderly manner. The threshing work is performed satisfactorily to prevent clogging and unhandling.
[0019]
Moreover, the combine 1 which performs such a mowing and threshing work is a space part formed between the pretreatment part 11 and the threshing part 3 in the pretreatment part HST20 and the pretreatment part transmission 2a that drive the pretreatment part 11 so as to be variable. In H, the trunnion shaft drive mechanism 5 that is disposed close to the front side wall 36 side of the threshing unit 3 and operates the trunnion shaft 53 of the pretreatment unit HST20 is installed in proximity to the front side of the pretreatment unit HST20. Therefore, the configuration of the pretreatment drive device 2 composed of the above three members can be installed in a compact and compact manner on the front side of the front side wall 36 of the threshing unit 3.
[0020]
Further, a wide space for maintenance can be secured on the front side of the pretreatment drive device 2 and the side near the feed chain 29, and this portion is cleaned and the trunnion shaft drive mechanism 5 or the pretreatment portion HST20 is removed for adjustment and repair. If desired, the trunnion shaft drive mechanism 5 and the pretreatment unit HST20 can be easily removed via the space H, and the assembly operation after the maintenance operation can be easily performed.
Furthermore, since the pre-processing drive device 2 configured as described above can be installed apart from the cereal carrier 12 accompanied by the falling of the sawdust, it avoids the accumulation of the sawdust and is complicated. Can be saved labor.
[0021]
The trunnion shaft drive mechanism 5 is configured such that the control gear 65 is engaged with the pinion gear 63 provided in the trunnion motor 6 and the trunnion shaft 53 is operated by the control gear 65, and the trunnion shaft drive mechanism 5 is preprocessed. The preprocessing drive device 2 in which the control gear 65 is inserted into and supported by the trunnion shaft 53 in a state of being attached to the front transmission 2a side, The mounting and fixing on the 2a side and the control gear 65 on the other side are also used as mounting members and supported on the trunnion shaft 53, so that the mounting and detaching structure of the trunnion shaft driving mechanism 5 can be simplified and the trunnion shaft driving On both sides of the mechanism 5 with a long span between the pre-processing unit transmission 2a and the pre-processing unit HST20 Is characterized such that can constant good attachment.
[0022]
【Effect of the invention】
Since the present invention is configured as described above, the following effects can be obtained.
A pre-processing unit is provided on the front side of the traveling machine base having the traveling device, a threshing unit is provided on the left and right sides of the traveling machine base behind the pre-processing unit , and a control unit and an engine are arranged on the left and right other sides, and the engine in combine the traveling device and the preprocessing unit with power and configured to drive the threshing unit, the traveling unit HST preprocessing unit for shifting driving the traveling apparatus provided with a pre-processing unit HST for variable speed drive from the front A pre-processing unit transmission that outputs to the pre-processing unit side the power changed by the processing unit HST and the pre-processing unit HST is disposed on the engine side in the space formed between the pre-processing unit and the threshing unit, and pre-processing The pre-processing unit HST is attached and fixed to the engine side of the front transmission, and the shift power from the pre-processing unit HST is input from the engine side of the pre-processing unit transmission, and the pre-processing unit transmission The pretreatment drive shaft for driving the output to the pre-processing unit on the engine side is provided, by the trunnion axis drive mechanism allowed to operate the trunnion axis of the pre-processing unit HST, was placed in front of the preprocessing unit HST, the front wall of the thresher section The pre-processing unit HST, the pre-processing unit transmission, and the trunnion shaft drive mechanism can be installed together in a compact manner on the front side, and a wide maintenance pace can be ensured, and the maintenance work of the trunnion shaft drive mechanism and the like can be easily performed. be able to.
[0023]
Further, the trunnion shaft drive mechanism is configured such that the control gear is engaged with the pinion gear provided in the trunnion motor, and the trunnion shaft is operated by the control gear, and the trunnion shaft drive mechanism is attached to the preprocessing unit transmission side. By inserting and supporting the control gear on the trunnion shaft, the trunnion shaft drive mechanism can be stably supported and supported by the transmission and the pre-processing unit HST with a simple and inexpensive configuration. The shaft drive mechanism can be easily attached and detached.
[Brief description of the drawings]
FIG. 1 is a plan view showing a main part of a combine equipped with a preprocessing unit driving structure according to the present invention.
FIG. 2 is a side view showing a configuration of a main part of FIG.
FIG. 3 is a plan view showing a transmission system of the combine of FIG. 1;
FIG. 4 is a front view of a pretreatment drive device.
FIG. 5 is a plan view of a pretreatment drive device.
FIG. 6 is a rear view showing a configuration of a trunnion shaft drive mechanism.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combine 2 Pretreatment drive device 2a Pretreatment part transmission 3 Threshing part 4 Traveling part HST
5 trunnion shaft drive mechanism 6 trunnion motor 10 traveling machine base 11 preprocessing unit 13 control unit 14 engine 20 preprocessing unit HST
36 Front wall 50 Machine stand 51 Mounting member 53 Trunnion shaft 63 Pinion gear 65 Control gear H Space

Claims (2)

A pretreatment section (11) is provided on the front side of the traveling machine base (10) having the traveling device (1a), and a threshing section ( on the left and right sides of the traveling machine base (10) is provided behind the pretreatment section (11). 3), the steering part (13) and the engine (14) are arranged on the left and right other sides, and the traveling device (1a), the pretreatment part (11) and the threshing part (3) are driven by the power from the engine (14). in configured to drive, travel portion HST (4) and the pre-processing unit for transmission drive traveling device (1a) to (11) to a transmission drive preprocessing unit HST (20) is provided combined, the pre-processing unit Between the preprocessing unit (11) and the threshing unit (3), the preprocessing unit transmission (2a) that outputs the power changed by the HST (20) and the preprocessing unit HST (20) to the preprocessing unit (11) side. disposed in the engine (14) side of the space portion (H) formed, The preprocessing unit HST (20) is attached and fixed to the engine (14) side of the processing unit transmission (2a), and the shift power from the preprocessing unit HST (20) is transmitted to the engine (14) side of the preprocessing unit transmission (2a). In addition, a preprocessing drive shaft (25) for driving output to the preprocessing unit (11) is provided on the engine (14) side of the preprocessing unit transmission (2a), and the trunnion shaft of the preprocessing unit HST (20) ( 53) A trunnion shaft drive mechanism (5) for operating 53) is installed on the front side of the pretreatment unit HST (20).   The trunnion shaft drive mechanism (5) is configured to engage the control gear (65) with the pinion gear (63) provided on the trunnion motor (6) and operate the trunnion shaft (53) by the control gear (65). The combine according to claim 1, wherein the control gear (65) is fitted to and supported by the trunnion shaft (53) with the trunnion shaft drive mechanism (5) attached to the preprocessing section transmission (2a).

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