JP2007143476A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester where the upper side of a reaping/transmitting horizontal pipe is covered by a covering body, designed to prevent waste straw and/or mud from being accumulated on the covering body. <P>SOLUTION: The combine harvester is so designed that the upper side of the reaping transmission horizontal pipe 20 is covered with the covering body 24(a left-side cover 24L and a right-side cover 24R), wherein the top surface(forwardly inclined surface 24a) of the covering body 24 is placed close to the passage position for the lower end of stem culms conveyed by plant foot conveying chains 14L, 14C and 14R, and by making use of such conveyed stem culms, waste straw and/or mud on the covering body 24 are(is) swept off. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine that performs power transmission to a preprocessing section via a cutting transmission vertical pipe and a cutting transmission horizontal pipe, and more particularly, to a combine that includes a cover body that covers the top of the cutting transmission horizontal pipe.

In general, this type of combine is provided with a pre-processing unit at the front of the machine body so that the stems are cut by driving the pre-processing unit and the cut stems are conveyed to the threshing unit. Usually, the pre-treatment unit is a pulling device that raises the stems, a star wheel or a feeding belt that scrapes the stems, a cutting blade that cuts the stocks of the stems, and a stock part of the cutting stems It is configured to include equipment such as a stock transport chain that transports it toward the back and a tip transport body (chain with claw) that transports the tip side of the cutting stem heel toward the rear and upward. Power transmission is performed via a cutting transmission vertical pipe extending forward from the front and a cutting transmission horizontal pipe extending laterally from the front end of the cutting transmission vertical pipe (see, for example, Patent Document 1).
JP-A-8-256570

By the way, in the combine comprised as mentioned above, since the cutting stalk passes above the cutting transmission horizontal pipe, there is a problem that the shavings and mud falling from the cutting stalk accumulate on the cutting transmission horizontal pipe. .
Then, like the combine described in Patent Document 1, it is proposed to cover the upper part of the cutting transmission horizontal pipe (cutting triaxial case) with a cover body (connection member), but even if a cover body is simply provided, There is a risk of sawdust and mud accumulating on the cover.

The present invention has been created in order to solve these problems in view of the above circumstances, and includes a cutting transmission vertical pipe extending forward from a traveling machine body, and the cutting transmission vertical pipe. A cutting transmission horizontal pipe that extends from the front end to the side, a cutting blade that cuts the stem of the stem in front of the cutting transmission horizontal pipe, and a stock of the stem that has been cut by the cutting blade. In a combine provided with a stock transport chain that transports toward the rear, when the upper portion of the cutting transmission horizontal pipe is covered with a cover body, the upper surface of the cover body is transported by the stock transport chain in a side view It is arranged in the vicinity of the pass position at the lower end of the heel. In this way, the stock of the conveying stems passes along the cover body and sweeps away the shavings and mud riding on the cover body, so that the accumulation of the sawdust and mud on the cover body can be prevented. it can.
Moreover, the upper surface of the said cover body is provided with the contact surface which contacts the stock of a conveyance stem. If it does in this way, the shavings and mud which got on the cover body can be actively swept away, and the accumulation prevention effect of the shavings and mud with respect to a cover body can be heightened.
In addition, the cover body includes a contact portion that contacts the stock of the conveying stem. If it does in this way, it will become possible to scrape off the mud adhering to the stock of a conveyance stem by using the cover body of a cutting transmission horizontal pipe.
Further, the cover body is formed in a side-view mountain shape by a forward inclined surface and a rear inclined surface, and the forward inclined surface is in the vicinity of a passing position of a lower end of the pedicles conveyed by the stock transport chain in a side view. It is arranged. If it does in this way, the sawdust and mud swept away by the stock of the conveyance stem can be quickly dropped from the cover body by the inclination guide of the back inclined surface.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a combine, and the combine 1 includes a pre-processing unit 2 that cuts off the stems, a threshing unit 3 that threshs the grains from the cut stalks, and selects the threshed grains. A grain tank (not shown) for storing the processed grain, a post-processing part (not shown) for post-processing the threshed waste, an operation part 4 on which the operator gets on, and a crawler type traveling part 5.

  As shown in FIG. 2 to FIG. 4, the pre-processing unit 2 of the present embodiment has a six-row cutting specification, a divider 6 for weeding the stems into the number of cuttings, and a pulling device for causing the stems 7, a cutting blade 8 for cutting the stem base, a star wheel 9 for scraping and transporting the stem side of the stem, a scraping transport belt 10 for scraping and transporting the tip side of the stem, and scraping 11 L of left side conveyance parts which convey the stalk buds for the left two strips inserted toward the confluence, the central conveyance part 11C which conveys the stalk culms for the center two lines inserted into the confluence, and scraping The right side conveyance part 11R which conveys the stalks for the two right-hand side stuffed into the merging point, and the rear side conveyance which conveys the merged stalks toward the start end part of the threshing feed chain 12 provided in the threshing part 3 And a portion 13.

  The left transport unit 11L, the central transport unit 11C, and the right transport unit 11R are configured to include stock transport chains 14L, 14C, and 14R, and tip transport bodies (chains with claws) 15L, 15C, and 15R, respectively. The stock transport chains 14L, 14C, and 14R are arranged in a front-rear and rear-high shape from the upper position of the cutting blade 8 to the rear upper joint position, and transport the stock side of the stem toward the rear upper side. The tip transport bodies 15L, 15C, and 15R are arranged in parallel above the stock transport chains 14L, 14C, and 14R, and transport the tip side of the stem toward the rear upper side.

  The rear transport unit 13 includes a tip transport body (chain with claw) 16, a handling depth transport body 17, and an auxiliary transport body 18. The tip transport body 16 is arranged in a front-rear and rear-high shape from the joining position toward the threshing unit 3, and transports the head side of the joined stems toward the rear upper side. The handling depth transport body 17 is a stock transport chain that transports the joined stem side of the stems to the rear upper side, and the stem in the threshing section 3 is turned up and down with the front end as a fulcrum. Adjust the depth of the heel. In addition, the auxiliary transport body 18 is a stock transport chain that transfers the stock section between the terminal end of the handling depth transport 17 and the start end of the threshing feed chain 12.

  As shown in FIGS. 1 to 7, the preprocessing unit 2 is provided with transmission pipes such as a cutting transmission vertical pipe 19, a cutting transmission horizontal pipe 20, a raising transmission pipe 21, and a stock transmission pipe 22. Power is transmitted to each device of the pretreatment unit 2 via a transmission shaft and a bevel gear built in the transmission pipe. The mowing transmission vertical pipe 19 extends from the front end of the traveling machine body toward the front lower side, and transmits the power input to the input pulley 23 to the preprocessing unit 2. The cutting transmission horizontal pipe 20 extends from the front end of the cutting transmission vertical pipe 19 toward the left and right sides, and the power of the cutting blade 8 is taken out from the right end. The pulling transmission pipe 21 rises forward and upward from the left end portion of the cutting transmission horizontal pipe 20, and transmits power to the pulling device 7, the star wheel 9, the take-up conveyance belt 10, and the like. The stock transmission pipe 22 rises forward and upward from the front end portion of the cutting transmission vertical pipe 19 and drives the stock transport chain 14C of the central transport portion 11C by a drive sprocket 22a provided at the upper end portion.

  During the cutting operation, the cutting stalk passes over the cutting transmission side pipe 20 and the stock transmission pipe 22, so that the shavings and mud falling from the cutting stem side are on the cutting transmission horizontal pipe 20 and the stock transmission pipe 22. There is a possibility of accumulating. In particular, in the pre-processing unit 2 of the present embodiment, which is a 6-row cutting specification, the stems cut from a plurality of strips are merged on the stock transmission pipe 22, so that a large amount of sawdust and Mud may accumulate.

The combine 1 which concerns on embodiment of this invention is provided with the cover body 24 which covers the upper part of the cutting transmission side pipe 20 and the stock-source transmission pipe 22 in order to solve the above problems. As shown in FIGS. 5 to 7, the cover body 24 includes a left side cover 24 </ b> L that covers the upper left side of the cutting transmission horizontal pipe 20, a right side cover 24 </ b> R that covers the upper right side of the cutting transmission horizontal pipe 20, and a stock transmission pipe. 22 and a central cover 24C covering the upper part of 22
The left cover 24L and the right cover 24R are fixed to the cutting transmission horizontal pipe 20 via the bracket 25, and the center cover 24C is fixed to the left cover 24L and the right cover 24R.

  The left side cover 24L and the right side cover 24R are made of a plate member having a side-view mountain shape (∧) shape, and the front upper surface is a front inclined surface 24a and the upper rear surface is a rear inclined surface 24b. And the front inclined surface 24a is arrange | positioned in the side view by the vicinity of the passage position of the lower end of the pedicle stick conveyed by the stock transport chains 14L, 14C, 14R. In this way, as shown in FIG. 8 and FIG. 9, the stock of the conveying stems passes along the forward inclined surface 24a of the left side cover 24L and the right side cover 24R, and the ridge on the forward inclined surface 24a. Since scraps and mud are swept away, accumulation of soot and mud on the left cover 24L and the right cover 24R can be prevented.

  In the present embodiment, the front inclined surface 24a of the left cover 24L and the right cover 24R with respect to an imaginary line L passing through the cutting position of the cutting blade 8 and parallel to the stock transport chains 14L, 14C, 14R in a side view. Are arranged in parallel, but a sufficient effect can be expected even if they are not parallel. Further, as shown in FIG. 8, the forward inclined surfaces 24a of the left cover 24L and the right cover 24R may be arranged so as to have a predetermined distance from the stock of the transport stem, as shown in FIG. It may be arranged so as to come into contact with the stock of the conveying stem. And, when the forward inclined surface 24a is a contact surface that contacts the stock of the conveying stems, it is possible to positively sweep off the dust and mud that rides on the left cover 24L and the right cover 24R. Further, the effect of preventing accumulation of dust and mud on the left cover 24L and the right cover 24R is enhanced.

  Further, the left cover 24L and the right cover 24R may be disposed so as to contact the stock of the conveying stem. For example, the front ends of the left cover 24L and the right cover 24R are used as contact parts. If it does in this way, it will become possible to scrape off the mud adhering to the stock of a conveyance stem by using the cover body of the cutting transmission horizontal pipe 20. Moreover, since the left cover 24L and the right cover 24R are formed in a mountain shape when viewed from the side by the front inclined surface 24a and the rear inclined surface 24b, the mud scraped from the stock of the conveying stem is dropped from the front space to the field. On the other hand, the shavings and mud that have been swept away by the stock of the conveying stem can be quickly dropped from the front space and the rear space to the field by the inclined guides of the front inclined surface 24a and the rear inclined surface 24b.

  The center cover 24C is configured in a frontal mountain (∧) shape by connecting the plate member forming the left slope 24c and the upper ends of the plate member forming the left slope 24d. Covering the upper end of the base end of the stock transmission pipe 22 with such a central cover 24 </ b> C can prevent the accumulation of soot and mud on the base end of the stock transmission pipe 22. Moreover, the center cover 24C of the present embodiment is provided from the position close to the stock transport chain 14C to the center position of the cutting transmission vertical pipe 19 (preferably, the position beyond the cutting transmission vertical pipe 19) in a side view. Therefore, it is possible not only to prevent the accumulation of sawdust and mud over the entire area of the stock transmission pipe 22 but also to the center position of the cutting transmission vertical pipe 19 (preferably a position beyond the cutting transmission vertical pipe 19). It is also possible to prevent adhesion and accumulation to the guiding and cutting transmission vertical pipe 19. In addition, the central cover 24C acts to guide the stocks of the cutting stalks conveyed by the stock transport chains 14L, 14C, 14R and to suppress the spread of the stocks, so that the stock transport chains 14L, 14C, The stems that have been transported to the terminal end of 14R can be delivered to the rear transport unit 13 in a state where the spread of the stock is suppressed.

  Further, a narrow guide 26 is provided on the uncut area side of the pretreatment unit 2 to regulate the fall of the uncut stem culm. The narrow guide 26 is transformed into an action posture projecting outward from the side of the preprocessing unit 2 and a retracted posture along the side of the preprocessing unit 2 according to the rotation of the operating arm 27. The operating arm 27 is connected to the narrow guide operation lever 29 of the operation unit 4 via the operation wire 28, and changes the narrow guide 26 in accordance with the operation of the narrow guide operation lever 29. In this embodiment, when routing the operation wire 28 along the cutting transmission vertical pipe 19 and the cutting transmission horizontal pipe 20, the operation wire 28 is operated to a position where the upper portion is covered by the cover body 24 (the left cover 24L and the central cover 24C). Wire 28 is routed. If it does in this way, the operation wire 28 can be protected using the cover body 24 of the cutting transmission side pipe 20 and the stock former transmission pipe 22.

  According to the present embodiment configured as described, the cutting transmission vertical pipe 19 extending forward from the traveling machine body and the cutting transmission horizontal extending from the front end of the cutting transmission vertical pipe 19 to the side. Pipe 20, cutting blade 8 that cuts the stem stock in front of the cutting transmission horizontal pipe 20, and stock transport that transports the stock portion of the stem cut by the cutting blade 8 toward the rear In the combine 1 including the chains 14L, 14C, and 14R, the cover body 24 (the left cover 24L and the right cover 24R) is covered with the cover body 24 (the left cover 24L and the right cover 24R). Since the upper surface (the forward inclined surface 24a) is disposed in the vicinity of the passing position of the lower end of the pedicles conveyed by the stock transport chains 14L, 14C, 14R in a side view, the stock of the transported stems is the cover body. 4 (the left cover 24L and the right cover 24R) passes through the cover body 24 (the left cover 24L and the right cover 24R) and scavenges dirt and mud. As a result, the cover body 24 is swept away. Accumulation of sawdust and mud on (the left cover 24L and the right cover 24R) can be prevented.

  Further, when the upper surface of the cover body 24 (the left cover 24L and the right cover 24R) is provided with a contact surface (forward inclined surface 24a) that contacts the stock of the conveying stem, the cover body 24 (the left cover 24L and the right cover). 24R) can be actively swept away, and the effect of preventing accumulation of dust and mud on the cover body 24 (the left cover 24L and the right cover 24R) can be enhanced.

  When the cover body 24 (the left cover 24L and the right cover 24R) is provided with a contact portion (front end of the forward inclined surface 24a) that comes into contact with the stock of the conveying stem, the cover body of the cutting transmission horizontal pipe 20 24 (the left cover 24L and the right cover 24R) can be used to scrape off mud adhering to the stock of the conveying stems.

  Further, the cover body 24 (the left cover 24L and the right cover 24R) is formed in a side-view mountain shape by the front inclined surface 24a and the rear inclined surface 24b, and the stock-carrying transport chains 14L and 14C are formed on the front inclined surface 24a in the side view. , 14R is disposed in the vicinity of the passing position of the lower end of the pedicle stick, so that the scraps and mud swept away by the stock of the transported pedicle stick are covered by the inclined guides of the forward inclined surface 24a and the backward inclined surface 24b. The body 24 (the left cover 24L and the right cover 24R) can be quickly dropped from above.

  Moreover, since the cover body 24 (center cover 24C) covers the upper part of the base end portion of the stock transmission pipe 22, it is possible to prevent the accumulation of sawdust and mud on the base end portion of the stock transmission pipe 22. Moreover, since the cover body 24 (center cover 24C) is provided from the position close to the stock transport chain 14C to the center position of the cutting transmission vertical pipe 19, soot and mud with respect to the entire area of the stock transmission pipe 22 Not only can accumulation be prevented, but also sawdust and mud can be guided to the center of the cutting transmission vertical pipe 19 to prevent adhesion and accumulation to the cutting transmission vertical pipe 19.

  In addition, the cover body 24 (the central cover 24C) guides the stocks of the cutting stems that are transported by the stock transport chains 14L, 14C, and 14R, and suppresses the spread of the stock, so that the stock transport chains 14L, 14C , 14R can be delivered to the rear transport unit 13 in a state where the spread of the stock is suppressed.

It is a side view of a combine. It is a top view of a pre-processing part. It is a side view of a pre-processing part. It is a side view which shows the center conveyance part of a pre-processing part. It is explanatory drawing which shows the positional relationship of a transmission pipe and a cover body. It is a perspective view of a transmission pipe and a cover body. It is a disassembled perspective view of a transmission pipe and a cover body. It is operation | movement explanatory drawing of a cover body. It is operation | movement explanatory drawing of a cover body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Pre-processing part 8 Cutting blade 11R Right side conveyance part 11L Left side conveyance part 11C Central conveyance part 12 Threshing feed chain 13 Rear side conveyance part 14 Stock former conveyance chain 15 Tip conveyance body 19 Cutting cutting transmission vertical pipe 20 Cutting cutting transmission horizontal pipe 22 Stock transmission pipe 24 Cover body 24L Left cover 24R Right cover 24C Center cover 24a Front inclined surface 24b Rear inclined surface

Claims (4)

A cutting transmission vertical pipe extending forward from the traveling machine body, a cutting transmission horizontal pipe extending laterally from the front end of the cutting transmission vertical pipe, and a stem stock in front of the cutting transmission horizontal pipe In a combine comprising a cutting blade that cuts the base, and a stock transport chain that transports the stock base part of the stalk cut by the cutting blade backwards,
When the upper part of the cutting transmission horizontal pipe is covered with a cover body, the upper surface of the cover body is disposed in the vicinity of the passing position of the lower end of the culm conveyed by the stock transport chain in a side view. .   The combine according to claim 1, wherein the upper surface of the cover body includes a contact surface that comes into contact with the stock of the conveying stem.   The combine according to claim 1 or 2, wherein the cover body includes a contact portion that contacts the stock of the conveying stem.   The upper surface of the cover body is formed in a side-view mountain shape by a front inclined surface and a rear inclined surface, and the front inclined surface is in the vicinity of the passing position of the lower end of the pedicles conveyed by the stock transport chain in a side view. The combine according to any one of claims 1 to 3, wherein the combine is arranged.

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