JPH04129741U - Combine harvester reaping drive device - Google Patents

Abstract

(57) [Summary] [Purpose] Grain culm vertical conveyance members (22) (23) of the reaping section (7) whose driving source is an engine (12) and the reaping section (7) whose driving source is a hydraulic motor (71). ) grain culm raising member (19a), cutting blade (8), and grain culm raking member (20)
Try to synchronize with (21). [Configuration] The driving speeds of the grain culm lifting member (19a), the cutting blade (8), and the grain culm raking members (20) and (21) are synchronized with the rotational speed of the grain culm vertical conveyance members (22) and (23). A control circuit (97) is provided to adjust the rotational speed of the hydraulic motor (71).

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a reaping drive device for a combine that threshes the grain harvested at the reaping section at the threshing section. Regarding.

0002

[Conventional technology]

Conventionally, all parts of the reaping section were driven by the engine on the threshing machine body.

0003

[Problem that the idea aims to solve]

In the conventional technology, the power transmission path between each part of the reaping section and the drive source is extremely long, and the drive There will be more losses. As a means to solve this problem, we added a new separate drive source and When trying to shorten the reach route, prevent misalignment of various parts of the reaping unit due to differences in drive sources. There is a need.

0004

[Means to solve the problem]

Therefore, the present invention is designed to separate the grain culm vertical conveyance member, which is driven by the engine on the threshing machine body side. The hydraulic motor that drives the grain culm lifting member, the cutting blade, and the grain culm raking member is connected to the reaping section. a vertical conveyance speed sensor for detecting the rotational speed of the vertical conveyance member; Based on the reaping speed sensor that detects the rotational speed of the hydraulic motor and and a control circuit that adjusts the rotation speed of the hydraulic motor.

[0005]

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Figure 1 shows the drive system theory for the reaping section. Figure 2 is an overall side view of the combine, Figure 3 is a plan view of the same, and (1) in the figure shows the running A track frame on which a row crawler (2) is installed, (3) is the track frame (1) is a machine base that is fixedly supported, and (4) is a handling trunk with a feed chain (5) stretched on the left side. (6) is a built-in threshing unit, (7) is a cutting blade (8), grain culm conveyance mechanism (9), etc. (10) is a straw removal channel connected to the terminal end of the feed chain (5); The straw cutter facing the end of the combine harvester (11), and the straw cutter (12) that drives each part of the combine harvester. The moving engine (13) is taken out from the threshing section (4) with the grain lifting cylinder (14) facing. The paddy tank (15) for storing grains is connected to the driver's seat (16) and the operation section (17). It is a driver's cab equipped with The grain culm is configured to be threshed in a threshing section (4).

[0006] Further, as shown in FIG. 8) separates it from the uncut grain culm, and also installs a lifting case installed at the rear of the grass dividing plate (18). Guide the grain culm to be harvested to the stage (19), and use the lifting member of the lifting case (19) to At a certain tine (19a), the lodging grain culm is erected, and the raising case (19a) is raised. ) The cutting blade (8) at the rear supports the tip side of the grain culm until the culm is cut, and then The left and right stars, which are the grain culm raking members at the rear of the case (19), Vertical conveyance is a grain culm vertical conveyance member using foil (20) and left and right raking belts (21). Consists of a chain (22) and an upper conveyance chain (23) having tines (23a) The feed start end side of the grain culm conveyance mechanism (9) is scraped, and the culm side is connected to the vertical conveyance chain (2). 2), and thresh the harvested grain culm while also locking the ear side with the upper conveying chain (23). section (4), and place the feed start end side facing the feed end side of the vertical conveyance chain (22). Inherit the culm side of the harvested grain culm to the feed chain (5) and handle the tip side. It is configured to supply the room.

[0007] Further, the reaping section (7) is integrally connected to the main reaping frame (24) and its lower end. Each part is supported by the reaping frame (25), and the reaping frame (3) is A support frame (26) is provided on the front end side of the main frame (24), and a support frame (26) is provided on both sides of the rear end of the main frame (24). The fulcrum shaft case (27) connected to the body is rotatably supported, and the reaping part (7) is attached to the threshing machine body. The track frame (1) and the main frame are supported vertically movably in the front. (24) A reaping lifting cylinder (28) is interposed between the cylinders (28) and The entire reaping section (7) is configured to be raised and lowered as appropriate by the expansion and contraction operations.

[0008] In addition, as shown in FIGS. 1 and 4, the threshing section (4) includes a handling drum (6) and a swinging sorting machine. (29) and a winch (30), etc., and the output shaft (31) of the engine (12) The winnow shaft of the winnower (30) is connected to the winnow shaft through the pulleys (32), (33) and belt (34). (35) are interlocked and connected, and the handling cylinder input shaft (36) is connected to the winnowing shaft (35). Pulleys (37) (38), belts (39), and the tensioner that is the threshing clutch. The handling cylinder is connected to the handling cylinder input shaft (36) via a clutch (40). The handling cylinder shaft (41) of (6) is interlocked and connected via a pair of bevel gears (42) and (43). It's set.

[0009] Also, for driving the driving sprocket (44) of the traveling crawler (2), The input shaft (46) of the mission (45) is connected to pulleys (47) (48) and a belt ( 49) and is interlocked with the output shaft (31) of the engine (12).

0010 In addition, it is connected to the handling cylinder input shaft (36) via a pulley (50) and a belt (51). It has an input pulley (52) that is dynamically connected and drives the feed chain (5). The feed chain shaft (53) and the swinging drive shaft (54) of the swinging sorting board (29) and a reaping output shaft (55) that transmits power to the reaping section (7) as an output shaft. , a variable speed gear case (56), which is a synchronized variable speed transmission mechanism, is installed on the front end side of the threshing machine body, A feed chain (5) is attached to the feed chain shaft (53) by a driving sprocket (5). 7), and a swing sorting board (29) is connected to the swing drive shaft (54). ) are interlocked and connected via a link mechanism such as a crank arm, while the reaping output shaft The right end of the first reaping input shaft (58) inserted into the fulcrum shaft case (27) at (55) On the side are the pulleys (59) (60), belt (61) and the reaping clutch. They are interlocked and connected via a pulley (62) and a safety clutch (63).

[0011] A pair of bevel gears (64) ( The vertical conveyance drive shaft (66) is interlocked and connected via the vertical conveyance chain (22). And the upper conveyance chain (23) is driven vertically through drive sprockets (67) and (68). It is interlocked and connected to the moving shaft (66).

0012 In addition, a variable capacity hydraulic pump (69) is installed on the front end side of the threshing machine body, and the engine The drive shaft (70) of the pump (69) is interlocked and connected to the output shaft (31) of the engine (12). and a constant displacement hydraulic motor (71) driven by the pump (69). The reaping frame (24) is connected horizontally to the lower end of the main frame (24). The motor (71) is attached to the horizontal cylinder shaft (72) to be connected to the horizontal cylinder shaft (72). A pair of bevel gears (74) (75) are connected to the second reaping input shaft (73) that interpolates into the input shaft (72). The output shaft (76) of the motor (71) is interlocked and connected through the second reaping input shaft (73). ) through a pair of bevel gears (77) and (78) at both ends of the transmission shaft (7 9) are interlocked and connected, and a pair of bevel gears (80) are attached to the left pulling transmission shaft (79). The shaft (83) of the left lifting drive sprocket (82) is interlocked and connected via (81). At the same time, two sets of bevel gears (84) (84) are attached to the right-hand pulling transmission shaft (79). 5) Right side lifting drive sprocket via (86) (87) and bevel gear shaft (88) The shaft (90) of the kit (89) is interlocked, and the shaft (79) on the right side is The star foil (20) and the scraping belt are connected through bevel gears (91) and (92) between them. The drive shaft (93) of (21) is interlocked and further the right-hand lifting transmission shaft (79) Attach a crank arm (94) to the input side end of the blade (8) for reciprocating motion of the cutting blade (8). Threshing the drive source of the vertical conveyance chain (22) and upper conveyance chain (23) of the reaping section (7) Engine (12) on the aircraft side, other lifting tines (19a) and star foil (20) and the raking belt (21)/mower blades are connected to the hydraulic motor on the reaping part (7) side. (71).

[0013] In addition, as shown in FIGS. 1 and 5, the rotational speed of the first reaping input shaft (58) Vertical conveyance that detects the rotational speed of the vertical conveyance chain (22) and the upper conveyance chain (23) The speed sensor (95) and the rotational speed of the second reaping input shaft (73), that is, the hydraulic motor. A reaping speed sensor (96) detects the rotational speed of the rotor (71), and each of these sensors ( 95) Adjust the discharge capacity per revolution of the hydraulic pump (69) based on (96). By adjusting the rotation speed of the hydraulic motor (71), The drive speed of each part of the reaping section (7) with different drive sources is synchronized. .

[0014] This embodiment is configured as described above, and the engine (12) is operated, Turn on the threshing clutch (40) and reaping clutch (62) to move around the field. Normal harvesting work is carried out using a combine harvester, and the speed of operation of the combine harvester etc. Depending on the conditions, the transmission gear case (56) is switched to high speed side or low speed side, Due to load fluctuations on the engine (12), the vertical If there are fluctuations in the rotational speed of the conveyor chain (22) and upper conveyor chain (23), the hydraulic pressure The lifting tine (19a) and star wheel (2) are driven by the motor (71). 0) and the drive speed of the scraping belt (21) and cutting blades are adjusted to the vertical conveyance chain (22) and The hydraulic pump (69) is adjusted to correspond to the rotational speed of the upper transfer chain (23). The rotation speed of the hydraulic motor (71) that adjusts the discharge capacity is controlled; Even if there is a variation in this rotational speed due to a load variation on the motor (71), the same control as above is applied. will be held.

[0015] Therefore, the engine (12) and the hydraulic motor (71) serve as the driving sources for the reaping section (7). Even if a Since no disturbances occur, transport disturbances can be minimized in the same way as when using a single drive source. It can be suppressed.

[0016] In this embodiment, a variable displacement hydraulic pump (69) is used to drive the hydraulic motor (7). 1), but on the other hand, the hydraulic pump (69) was made a fixed displacement type, and the hydraulic pump (69) was changed to a variable displacement type. A quantitative hydraulic motor (71) may also be used.

[0017] In addition, the reaping section has a structure in which the raising section, raking section, and cutting blade section are moved horizontally as one unit. In the case of ) can be configured to form a power transmission system with Since there is no need to transmit power, the power transmission system for the entire reaping section is simplified and this Here, what is the hydraulic pump (69) on the thresher body side and the hydraulic motor (71) on the reaping part side? Since the piping is only connected with a flexible hose, the layout of the hydraulic motor (11) is easy. This allows the hydraulic motor (11) to be used as the drive source. This further facilitates the simplification of the power transmission system.

[0018]

[Effect of the idea]

As is clear from the above embodiments, the present invention uses the engine (12) on the side of the threshing machine. Separately from the grain culm vertical conveyance members (22) and (23) which serve as driving sources, a) and a hydraulic motor that drives the cutting blade (8) and grain culm raking members (20) and (21). (71) is provided in the reaping part (7), and the rotation of the vertical conveyance members (22) and (23) is A vertical conveyance speed sensor (95) that detects the rotation speed and the rotation of the hydraulic motor (71) A reaping speed sensor (96) that detects the speed, and each of these sensors (95) (96) a control circuit (97) that adjusts the rotational speed of the hydraulic motor (71) based on the The vertical transport members (22) and (23) and the lifting member (19a) have different drive sources. It is possible to synchronize and drive the cutting blade (8) and the scraping members (20) and (21). It is possible to prevent disturbances in grain conveyance due to these mismatches, and to reduce the engine (12) and oil To perform appropriate reaping work with the reaping section (7) having the pressure motor (71) as a driving source. It has a remarkable effect. In addition, the hydraulic motor is attached to the reaping section (7) which is supported movably from side to side at the front of the threshing machine. By providing the holder (71), the reaping part (7) can be divided into a fixed part and a horizontally movable part. Since the power transmission system can be configured by moving the parts together, power can be transmitted from the fixed part to the left and right moving parts. The power transmission system of the entire reaping section (7) can be simplified, and The power transmission path between the drive source and the driven member is shortened, reducing drive loss. This has remarkable effects such as efficient power consumption.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a drive system of a reaping section.

FIG. 2 is an overall side view of the combine harvester.

FIG. 3 is an overall plan view of the combine harvester.

FIG. 4 is a side view of the reaping section.

FIG. 5 is a control circuit diagram.

[Explanation of symbols]

(7) Reaping section (8) Cutting blade (12) Engine (19a) Grain culm lifting tine (grain culm lifting member) (20) Star foil (grain culm rake member) (21) Raking belt (grain culm raking member) (22) Grain culm vertical conveyance chain (grain culm vertical conveyance member) (23) Grain culm top conveyance chain (grain culm vertical conveyance member) (71) Hydraulic motor

Claims (2)

[Scope of utility model registration request] 1. Separately from a vertical grain conveying member driven by an engine on the threshing machine body side, a hydraulic motor for driving a grain culm lifting member, a cutting blade, and a grain culm raking member is provided in the reaping section, A vertical conveyance speed sensor that detects the rotation speed of the vertical conveyance member, a reaping speed sensor that detects the rotation speed of the hydraulic motor, and a control circuit that adjusts the rotation speed of the hydraulic motor based on each of these sensors. A combine harvester reaping drive device characterized by: 2. The reaping drive device for a combine harvester according to claim 1, wherein the hydraulic motor is provided in a reaping section supported movably from side to side in front of the threshing machine body.