JP3628219B2 - Harvesting part of reaper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a harvester of a harvester such as a combine or a binder, and more specifically, by devising a drive structure of a pulling device or a lateral conveying device, the harvested cereal can be obtained without increasing the size of the harvester. The present invention relates to a technology for carrying out well.
[0002]
[Prior art]
As a driving structure of the cutting part, as shown in Japanese Patent Laid-Open No. 10-146124, a transmission shaft linked to an input shaft provided in one cutting main frame that supports the cutting part is provided. A structure in which each pulling device is driven from above via a single left-right transmission shaft that is arranged upright on the left and right sides of the mowing unit and is disposed on the upper side of the plurality of pulling devices, so-called An “arch-type drive structure” is known.
[0003]
Then, as shown in Japanese Utility Model Laid-Open No. 63-53219, the power of the input shaft that passes through the cutting main frame is transmitted vertically to drive a plurality of pulling devices below the grain transportation path. Also known is a so-called “archless type drive structure” in which each pulling device is driven from below via a left-right transmission shaft linked to the shaft. These cutting part drive structures were appropriately set according to the model and specification settings, such as the number of cutting lines, the object to be cut, and the region.
[0004]
[Problems to be solved by the invention]
When the latter technique, “archless type drive structure” is adopted, the upper part of each pulling device is supported and the pulling chain with the locking claw is pulled and driven. A horizontal shaft case that hangs the built-in support case between the lower part of the cutting frame and the upper part of the lifting device, and the lower part of the cutting frame surrounds the long cutting transmission shaft that is driven and rotated by the power from the machine. It will consist of
[0005]
Further, the horizontal conveying device arranged above the reaping device, which is constituted by a belt with a locking claw, a chain with a protrusion, or the like so as to gather the harvested cereals at the starting end of the vertical conveying device, As shown in the publication, apart from the horizontal axis case (reference numerals 15E, 15F), a transmission case (reference numeral 14) having a dedicated transmission shaft (reference numeral 21) is provided, and the dedicated transmission shaft (reference numeral 21). Is used to drive the horizontal conveyance device. Therefore, there is a disadvantage in that the structure is complicated and the weight is increased due to the provision of a dedicated transmission case for the lateral transfer device.
[0006]
Also, in Japanese Patent Laid-Open No. 8-154442, a transmission shaft for driving and rotating a horizontal conveying device (reference numeral 14) together with a take-in rotating body (reference numerals 9A and 9C), and a dedicated vertical transmission case incorporating the same. From the horizontal axis case. According to this, although the vertical transmission case is located at a position shifted laterally from the conveying path of the harvested cereal rice cake, an increase in conveyance resistance due to contact when there is a large amount of cereal rice cake, scraps, dust, etc. There is a disadvantage in that wrapping of foreign matter is relatively easy to occur.
[0007]
The object of the present invention is to improve the above-mentioned various disadvantages in adopting an archless type drive structure, and to avoid an increase in weight and complexity of the structure of the drive system of the lateral transfer device, and also to improve It is in the point which makes it comprise so that it may not become obstructive.
[0008]
[Means for Solving the Problems]
〔Constitution〕
The structure of Claim 1 arrange | positions the clamping conveyance mechanism which clamps a stockholder side with a chain with a protrusion, and a guide member, and conveys the grain pod on the right and left of a cutting part, and carries out the clamping conveyance of the harvested corn straw on the left and right An input shaft that configures a horizontal transport device that gathers and joins the places between these clamping transport mechanisms by the mechanism, and inputs power from the machine in the middle of the left and right A cutting transmission shaft that is provided at a lower end of the cutting unit and receives power transmission from the input shaft, and a vertical transmission shaft for driving a pulling device that receives power transmission at both left and right ends of the cutting transmission shaft. And with ,
A drive sprocket equipped on the left and right vertical transmission shafts, and a chain guide body that guides the chain with protrusions by being positioned on the center side in the cutting width direction next to the drive sprocket; A driven sprocket disposed on the front side of the drive sprocket and the chain guide body and at an apex position having a substantially triangular shape in a front view in plan view, and the drive sprocket, the chain guide body, and the driven sprocket. Constructed with the above-mentioned chain with protrusions and ,
A scraping rotator that scrapes and conveys the harvested cereal is provided in a state of rotating integrally with the left and right driven sprockets.
[0009]
The configuration of claim 2 is the configuration of claim 1, wherein the left and right scraping rotators are arranged between the left and right scraping rotators. One of the rotating rotating bodies And an intermediate longitudinal transmission shaft that is driven by the reaping transmission shaft, and the intermediate longitudinal transmission shaft is connected to the intermediate longitudinal rotation shaft. Immediately after the take-in rotating body, and In front of the junction of the left and right gripping transport mechanisms It is arranged to constitute a cutting part for three-row cutting.
[0010]
[Action]
The configuration of claim 1 is conceived by focusing on the fact that a pair of nipping and conveying mechanisms using a chain with protrusions constitutes a lateral conveying device, and a pulling device provided at the left and right ends of the cutting unit. Each clamping conveyance mechanism is driven by the power of the vertical drive shaft for driving. In other words, since the chain with protrusions is directly wound around the drive sprocket equipped on the vertical transmission shaft, there is no need for a drive shaft or transmission case dedicated to the horizontal transfer device, which simplifies the structure and reduces weight. It becomes possible.
[0011]
The chain with a protrusion is stretched in a state of forming a substantially triangular shape in a plan view across a driving sprocket, a driven sprocket disposed on the front side of the driving sprocket, and a chain guide disposed on the lateral inner side of the driving sprocket. Since it is provided, the cereals can be conveyed to both the left and right and the rear, and the harvested cereals can be efficiently transported obliquely in a state where they are picked up.
[0012]
In addition, the chain winding angle of the drive sprocket is less than 180 degrees due to the triangular tension of the chain with protrusions, so when an excessive load is applied, a jumping phenomenon occurs in the drive sprocket part (a phenomenon where the chain jumps over the sprocket teeth) As a result, it is possible to expect a limiter function that can prevent damage to each transmission section such as chain breakage and gear breakage.
[0013]
In addition, since the scraping rotating body that rotates integrally with the driven sprocket located at the foremost end of the sandwiching and conveying mechanism is provided, the cereals are actively introduced into the conveying path by the protruding chain prior to the conveying of the culm by the protruding chain. It is possible to squeeze in and it is possible to further enhance the transporting action by the sandwiching transport mechanism.
[0014]
According to the configuration of the second aspect of the present invention, when the right and left intermediate take-up rotator and the left and right intermediate pulling device are provided to form the three-row mowing part, the intermediate take-up rotator is set to either the left or right. Therefore, it is not necessary to provide a dedicated transmission shaft, and the cereal meal transport route can be widened accordingly. In this case, the two biting rotators that are interlocked with each other are on the side that conveys the cereals for two lines, and the other rotator is on the side that conveys the cereals for one line.
[0015]
Therefore, the intermediate longitudinal transmission shaft driven by the cutting transmission shaft, that is, the shaft for driving the left and right intermediate pulling device, immediately after the intermediate take-up rotating body, and In front of the junction of the left and right gripping transport mechanisms Since it has been arranged, an intermediate longitudinal transmission shaft is arranged in the dead space between the transfer path of the two chopped cereals and the transfer path of the one chopped cereal, and this intermediate longitudinal transmission The shaft can be arranged so as not to obstruct the combined conveyance of the harvested cereal meal.
[0016]
〔effect〕
As a result, in the reaper according to claims 1 and 2, (a) the lateral conveying device is driven by the pulling device driving vertical transmission shafts located at the left and right ends of the reaping portion, or the nipping and conveying mechanism is configured. With the triangular structure of the chain with protrusions, etc., eliminating the dedicated drive shaft and case, and efficiently scraping the culm, so that the converging and converging conveyance of the cereal can be performed more smoothly and satisfactorily, The drive structure can be simplified and reduced in weight, and a rational mowing unit that can prevent damage to each transmission unit from an excessive load can be provided.
[0017]
In the reaper according to claim 2, it is possible to arrange the vertical transmission shaft for driving the pulling device in the middle between the left and right so as not to hinder the cereal conveyance, and it is excellent in performance that can achieve the effect (a). We were able to provide a cutting part for cutting 3 lines.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a side surface of a front half of a self-removing combine for three-row cutting. This combine is attached to the front of a traveling machine body 1 having a pair of left and right crawler traveling devices 1A. The cutting part 2 that cuts the planted cereal and transports it toward the upper left rear is connected to the left and right axis core P so as to be able to swing up and down. The threshing device 3 that receives the cereal and performs the threshing / sorting process, and on the right side of the traveling machine body 1, the grain tank 4 that stores the grain after the threshing device 3 and the operator board the board. It is equipped with a control unit 5 and the like.
[0019]
As shown in FIGS. 1 to 4, the cutting unit 2 includes four weeding tools 6 that act on the plant side of the planted cereal and weed, and three groups that cause the planted cereal to be weeded. Pulling device 7, hair clipper-type reaping device 8 for cutting the planted side of the raised cereal culm, and staking and transporting the cultivated cereal culm (reached cereal culm) cut back to the rear 3 The first transport device 9, the pair of left and right second transport devices (an example of a lateral transport device) 10 that transports the harvested cereal meal that has been scraped and transported to the left and right center, and gathers them to the left and right center It is composed of a third conveying device 11 that supplies and conveys the harvested cereal rice cake to the rear threshing device 3 while gradually changing the posture from the standing posture to the posture, and the harvesting frame 12 that supports them. .
[0020]
As shown in FIG. 3 and FIG. 4, each pulling device 7 includes a pulling case 7 a erected, a drive sprocket 7 b disposed at the upper part of the raising case 7 a on the path side (inner side), and a pulling case. 7a, a driven sprocket 7c provided at the bottom of the 7a, a rotating chain 7d wound around the sprockets 7b, 7c, and a posture that can be changed to a posture and a retracted posture caused by the rotating chain 7d at regular intervals. And a tension sprocket 7f provided on the upper part of the return path side of the pulling case 7a, and the like. It is designed to cause planted cereals.
[0021]
As shown in FIGS. 1, 2, 4, and 5, each first transport device 9 includes a driving pulley 9 a disposed on the rear side, a driven pulley 9 b disposed on the front side, and pulleys 9 a thereof. , 9b and a rotating belt mechanism 9A composed of a protruding rotating belt 9c and the like, and a packer 9B disposed below each driving pulley 9a. 9A and the packer 9B are engaged and transported by cutting and feeding the harvested cereal meal.
[0022]
The second transport device 10 on the left side includes a sandwiching transport mechanism 10A and two upper and lower locking transport mechanisms 10B. The sandwiching transport mechanism 10A and the latching transport mechanism 10B are engaged with each other. The harvested cereal meal is collected and conveyed by the conveying action. The holding and conveying mechanism 10A is provided between a driving sprocket 10a provided at the left end, a first driven sprocket 10b provided at the left and right center, and between the driving pulley 9a and the packer 9B in the left first conveying device 9. The second driven sprocket 10c, and a chain 10d with a protrusion wound around the sprockets 10a to 10c, and the like.
[0023]
As shown in FIGS. 2, 4 and 5, the second transport device 10 on the right side includes a drive sprocket 10 a provided at the right end, a first driven sprocket 10 b provided at the left and right center, and a first first sprocket 10 b on the right side. Clamping conveyance comprised by the 2nd driven sprocket 10c arrange | positioned between the drive pulley 9a and the packer 9B in the conveying apparatus 9, and the chain 10d with a protrusion wound around those sprockets 10a-10c, etc. Only the mechanism 10A is provided, and the harvested cereal rice cake is collected and conveyed by the nipping and conveying mechanism of the nipping and conveying mechanism 10A. In other words, both the left and right second transport devices 10 and 10 join the harvested cereal rice cakes collected to the left and right intermediate locations where the left and right projecting chains 10d and 10d are close to each other, and then deliver them to the third transport device 11. It works like this.
[0024]
As shown in FIGS. 10, 14, and 18, the front ends of the guides 79 and 80 of the left and right holding and conveying mechanisms 10A and 10A are bolted to the front of the second weed frame 12x from the left. It is. That is, the left guide 79 made of a round bar made of an elastic material is formed in a shape along the movement path of the left protruding chain 10d so that it is within the width of the left protruding chain 10d [between the inner chain links 78, 78. (See FIG. 16)] The rear end is set to a position corresponding to a position immediately after a third vertical axis case (an example of a transmission case) 47 described later.
[0025]
Similarly, the right guide 80 made of a round bar made of elastic material is bent so as to bypass the right side of the right and left centered rotating body, and its rear part is formed in a shape along the movement locus of the right protruding chain 10d. It is positioned within the width of the right protruding chain 10d (between the inner chain links 78, 78). The rear end of the right guide 80 is set to a position that substantially matches the rear end position of the left guide 79.
[0026]
A rear-pointed conveyance guide body 81 provided with guide portions 81a and 81b for both the left and right chain with projections 10d and 10d is provided at a place where the conveyance halves by the left and right clamping conveyance mechanisms 10A and 10A merge. The conveyance guide body 81 is a single part formed by bending and forming an elastic wire having a smaller diameter than the left and right guides 79 and 80 described above. It is supported by a stay 82 projecting forward.
[0027]
That is, the rear end bent rearward is fitted into the hole 82a of the stay 82, and the bypass portion 81c on the front side is bolted, and the rear free end is cantilevered so as to surround the third longitudinal axis case 47 Is supported without rattling. With this support structure, each of the guide portions 81a and 81b can be elastically displaced relatively easily in the left-right direction, and is regulated to be relatively difficult to move in the up-down direction.
[0028]
The conveyance guide body 81 is composed of a single wire, and the left and right guide portions 81a and 81b are connected by the rear end bending R portion 81d. Therefore, the culm volume of both the left and right clamping conveyance mechanisms 10A and 10A is Even if both of the guide portions 81a and 81b are pushed and greatly deformed, the presence of the rear end bending R portion 81d allows the transfer guide body 81 to move from the holding action area relatively smoothly toward the third transfer device 11. You can get out.
[0029]
As shown in FIG. 14, the free end side front end portion of the transport guide body 81 (the front end portion of the left guide portion 81a) includes a stay 82, a substantially L-shaped stop plate 83 fixed to the lower surface thereof, It is inserted into a narrow space portion that is thin and flat in the vertical direction surrounded by the three longitudinal axis case 47 so as to restrict excessive movement on the left guide portion 81a side.
[0030]
The left guide portion 81a is disposed within the chain width of the left protruding chain 10d in a state of being wrapped with the left guide 79 in the front-rear direction, and the right guide portion 81b is also wrapped with the right guide portion 80 in the front-rear direction. In the state of being arranged, it is arranged within the chain width of the right protruding chain 10d. Any of the guide portions 81a and 81b may be located on either the upper side or the lower side of the guides 79 and 80.
[0031]
In addition, 84 is a stop guide for pressing the grain straws gathered together by the second transport device 10 toward the left projecting chain 10d side, thereby reliably to the start end of the third transport device 11 I can send cereals. A rearward cantilevered stop guide 84 is bolted to the rear end of the right take-in frame 43.
[0032]
As shown in FIGS. 1, 2, and 4, the third transport device (vertical transport device) 11 includes a sandwich transport mechanism 11 </ b> A and a latch transport mechanism 11 </ b> B. The supply and conveyance of the harvested cereal meal is performed by the engagement and conveyance action of the engagement conveyance mechanism 11B, and the stock base side of the harvested cereal meal is passed to the feed chain 3a of the threshing apparatus 3, and the tip side of the harvested cereal meal is used in the threshing apparatus 3 It comes to lead in. Moreover, since the latching conveyance mechanism 11B of the 3rd conveying apparatus 11 is comprised so that the feed chain 3a of the threshing apparatus 3 may be extended from the rear upper part of the 1st conveying apparatus 9 on the right side, the front side part may be. In addition, it functions as a locking and conveying mechanism 10B of the second conveying device 10 on the right side to carry out the gathering and conveying of the harvested cereal grains.
[0033]
As shown in FIGS. 1 and 4, on the shaft core P, which is a vertical swing fulcrum of the reaping portion 2, a right-hand end is provided with an input pulley 13 to which power from an engine (not shown) is transmitted. A counter shaft 14 is provided, and the transmission to the pulling device 7, the mowing device 8, the first transport device 9, the second transport device 10, and the third transport device 11 is performed via the counter shaft 14. I have to.
[0034]
The transmission structure will be schematically described. As shown in FIGS. 1, 2, and 4 to 7, a main transmission shaft (input shaft) extending from the counter shaft 14 toward the front and lower side is provided at the left and right central portion of the counter shaft 14. 15) from the first transmission shaft 16 to the front end of the main transmission shaft 15 and from the first transmission shaft 16 to the left and right ends of the first transmission shaft 16 and to the left and right central portions. A lower end portion of the vertically oriented second transmission shaft (an example of the longitudinal transmission shaft) 17 extending over the corresponding pulling device 7, and a driving shaft 7 g of the corresponding pulling device 7 are respectively connected to the upper end portion of each second transmission shaft 17. The transmission is connected via a bevel gear 18. That is, the power input to the counter shaft 14 is transmitted to each pulling device 7 via the main transmission shaft 15, the first transmission shaft 16, and the second transmission shaft 17.
[0035]
As shown in FIGS. 1, 2, and 4 to 7, each second transmission shaft 17 is configured in a two-part structure including a lower shaft portion 17b and an upper shaft portion 17c that are connected to each other via a bevel gear 17a. Yes. Among the lower shaft portions 17b, the left and right lower shaft portions 17b are vertically raised in a front view and are directed to the upper portions of the corresponding left and right pulling devices 7, and the central lower shaft portion 17b is a corresponding one. In the state toward the lower portion of the central pulling device 7, the state is set so as to stand up at right angles to the first transmission shaft 16.
[0036]
Among the upper shaft portions 17c, the left and right upper shaft portions 17c are tilted toward the center toward the drive shafts 7g of the corresponding left and right pulling devices 7, and the center upper shaft portions 17c correspond. The posture is set so as to extend from the lower shaft portion 17b to which they are transmission-coupled to the drive shaft 7g of the pulling device 7 in a state of being inclined toward the drive shaft 7g of the central pulling device 7. That is, the upper shaft portion 17c on the apparatus side is interlocked and connected to the upper end portion of the lower shaft portion 17b in a state where the upper side is inclined inward in the left-right direction with respect to the lower shaft portion 17b.
[0037]
Out of each lower shaft portion 17b, the left and right lower shaft portions 17b are externally fitted and attached so that the corresponding driving sprocket 10a of the holding and conveying mechanism 10A of the second conveying device 10 rotates integrally. That is, the second transfer shaft 10 is driven by the left and right second transmission shafts 17 with the axis Y of the lower shaft portion 17b of the left and right second transmission shafts 17 and the rotation axis Z of the second transfer device 10 parallel. It is interlocked and connected. Therefore, in the side view, the protruding chain 10d and the lower shaft portion 17b are set to intersect at right angles (a state where the included angle is 90 degrees).
[0038]
As shown in FIGS. 4 and 6, the cutting device 8 has a movable cutting blade 25 linked to a crankshaft 20 that is connected to the first transmission shaft 16 via a bevel gear 38. That is, the power from the first transmission shaft 16 is transmitted to the reaping device 8.
[0039]
As shown in FIGS. 1, 2, and 4, the third transport device 11 is connected to a third transmission shaft 22 that is connected to the left end portion of the counter shaft 14 via a bevel gear 21. 11a and the drive sprocket 11e of the latching conveyance mechanism 11B are externally fitted and attached so as to rotate integrally. That is, the power from the counter shaft 14 is transmitted to the third transport device 11 via the third transmission shaft 22.
[0040]
As shown in FIGS. 5, 10, and 18, a gear-like drive driven by meshing with a packer 9 </ b> B on the already-cutting side (right side in the aircraft traveling direction) between the left and right sides of the gear-like left and right packers 9 </ b> B, 9 </ b> B. An intermediate packer (an example of an intermediate take-up rotator) 85 is provided, and an intermediate for driving the pulling device 7 between the left and right Vertical The transmission shaft 17c, that is, the third longitudinal axis case 47 is immediately after the intermediate packer 85, and The front of the junction of the left and right gripping transport mechanisms 10A and 10A It is arranged in the place. The third vertical axis case 47 is provided on the left protruding chain 10. d Cereal conveyance path and right protruding chain 10 d It is located between the left and right of the cereal conveyance route by and just before the junction where the two ends are located, and is disposed in a dead space-like location that does not hinder the cereal conveyance.
[0041]
To achieve this, the intermediate packer 85 has a diameter smaller than that of the left and right packers 9B, 9B, and the front end positions of the three packers 9B, 79, 9B substantially coincide. The position of the rotational axis y2 of the intermediate packer 85 is secured before the rotational axes y1 and y2 of the right and left packers 9B and 9B are moved forward. The configuration that makes it easier to bring the transport path to the uncut side greatly contributes.
[0042]
As can be seen from the above configuration, the first conveyance device 9 in the middle between the left and right has a structure in which power is input from the right vertical transmission shaft via the intermediate packer 85, the right packer 9B, the chain 10d with a right protrusion, and the like. Therefore, a dedicated transmission shaft and its casing can be omitted, and from this point, it is possible to contribute to the realization of smooth grain transport.
[0043]
As shown in FIGS. 1, 8, and 9, the reaping device 8 is a receiving blade base that is attached over a plurality of support frames 12 x that extend forward to attach the fixed weeding tool 7 in the reaping frame 12. The blade 24 is fixed to the blade 23, the cutting blade 25 is slidable left and right with respect to the blade 24, and the knife head 27 is fixed to the blade 25 via an attachment stay 26. The knife head 27 is configured by including a plate material bent in a rearward open U shape in a plan view, and has a bearing roller 29 that is supported by the crank mechanism 28 so as to be rotatable around the front and rear axis X, and has an outer diameter. The inner fitting is performed in a state that exactly matches the inner dimension of the knife head 27.
[0044]
The crank mechanism 28 is configured by welding a cutting blade crank 30 to the tip of a cutting blade drive shaft 20 which is a crankshaft, and rotatably supporting a bearing roller 29 on the cutting blade crank 30. The rear portion of the right end support frame 12x is bent leftward and is bolted to a side surface of a shaft support case portion 35a described later via a flange 42 fixed to the rear end.
[0045]
As shown in FIGS. 8 and 9, the cutting blade 25 and the mounting stay 26 are integrated with a rivet or the like with a slider 31 that is a knife bar that is in sliding contact with the rear end surface of the receiving blade 24, and a knife that holds down the cutting blade 25. A slidable plate 33 that is fastened and fixed together with the clip 32 is configured so that the cutting blade 25 is positioned in the front-rear and up-down directions and slides only in the left-right direction so as to be in sliding contact with the rear end surface of the slider 31.
[0046]
A bearing roller 29, that is, a cutting blade crank 30 is arranged on the rear side of the right side portion of the receiving blade base 23. A cutting blade drive shaft 20 having a cutting blade crank 30 at its front end is supported in a front-rear direction with respect to a shaft support case portion 35a formed integrally with a horizontal shaft case 35 that is a casing of the cutting transmission shaft 16. The shaft core Q is positioned substantially at the top and bottom of the knife head 27.
[0047]
Further, the cutting blade crank 30 is formed in a disk shape integrally provided with a first balance weight 34 bulging in the axial direction on the opposite side to the bearing roller 29 mounting portion with respect to the rotational axis Q. It functions as a balancer that cancels the vibration caused by the lateral movement of 25, reduces the vibration associated with the rotation of the cutting blade crank 30, and also functions as a flywheel that smoothes load fluctuations associated with the rotation of the cutting blade drive shaft 20. It has become.
[0048]
The cutting blade drive shaft 20 is configured such that rotational power is transmitted by a bevel gear mechanism 38 having an occlusal structure of a small-diameter bevel gear 36 fitted to the rear end thereof and a large-diameter bevel gear 37 fitted to the cutting transmission shaft 16. It is. A countershaft 39 that is interlocked and connected to the cutting transmission shaft 16 via the bevel gear mechanism 38 and rotates at the same speed at the same rotation speed per unit time in the direction opposite to the rotation direction of the cutting blade drive shaft 20 The counter shaft 39 is taken out rearward so as to be concentric with the drive shaft 20, and a second balance weight 40 that opposes the lateral movement of the cutting blade 25 is provided at the rear end of the counter shaft 39.
[0049]
That is, the counter shaft 39 is rotatably supported on the second shaft support case portion 35b formed integrally with the horizontal shaft case 35 on the rear side of the shaft support case portion 35a, and the large-diameter bevel gear 37 is mounted on the counter shaft 39. The small-diameter bevel gear 41 to be engaged is fitted as the same component (the same diameter and the same number of teeth) as the small-diameter bevel gear 36 of the cutting blade drive shaft 20. The second balance weight 40 includes a weight 40a at the outer peripheral end of the disc 40b. When the center of gravity of the first balance weight 34 is directly above the axis Q, the second balance weight 40 A bevel gear mechanism 38 including three bevel gears 36, 37, and 41 is set so that the center of gravity is located directly below the axis Q.
[0050]
The first balance weight 34 is equipped so that its center of gravity is located on the opposite side of the crank mechanism 28 with respect to the cutting blade drive shaft 20, and the function of correcting the eccentricity of the cutting blade drive shaft 20 due to the presence of the crank mechanism 28, And it has the function which moves to the side opposite to the horizontal movement of the cutting blade 25, and cancels the movement inertia of the cutting blade 25. However, since the mass for canceling the inertia of the cutting blade 25 is larger than the mass of the crank mechanism 28, when the first balance weight 34 moves in the vertical direction where the inertia canceling action with the cutting blade 25 does not function, it still remains. The rotational balance is biased and vibration is likely to occur.
[0051]
Therefore, the cutting blade drive shaft 20 and the counter shaft 39 having the coaxial core Q are configured such that both the shafts 20 and 39 are rotationally driven in the opposite directions at the same speed. By providing the second balance weight 40 that opposes the lateral movement, the above-described vertical vibration is eliminated. The cutting blade drive shaft 20 and the counter shaft 39 are both supported by bearings independently, and the cutting transmission shaft 16 may be a single component as in the past, and a hexagonal shaft extending through the bevel gear mechanism 41 portion to the left and right. It is configured.
[0052]
As shown in FIGS. 1 and 5 to 7, the pulling device 7 such as the counter shaft 14 and the main transmission shaft 15, the mowing device 8, the first transport device 9, the second transport device 10, and the vertical transport device 11 are provided. Each transmission system is housed in a member constituting the cutting frame 12. That is, the cutting frame 12 is composed of cases that surround these transmission systems. Therefore, in the cutting frame 12, the left and right vertical case 46, 48, which is a casing that surrounds the lower shaft portion 17b of the left and right second transmission shaft 17, is inserted through the protruding chain 10d of the second transport device 10. A permissible opening 19 is formed, and the projecting chain 10d is wound around the driving sprocket 10a mounted on the lower shaft portion 17b.
[0053]
Here, the structure of the tensioner T that tensions the protruding chain 10d in the holding and conveying mechanism 10A will be described with respect to the right holding and conveying mechanism 10A. As shown in FIGS. 15 to 17, the tensioner T is composed of a torsion coil spring 76 fitted on a support shaft 75 made of a pipe material that is vertically fixed to the main pipe 51 of the right take-in frame 43. Yes. That is, the tension portion 76A formed by folding the free end side (rear end side) of the torsion coil spring 76 made of a round bar-shaped spring material directly contacts and presses the chain roller 77 of the chain 10d with protrusions. It is configured.
[0054]
The tension portion 76A is a one-stage bent structure that is set to be slightly narrower than the inner width of each of the pair of inner chain links 78, 78 in the protruding chain 10d, and contacts the chain roller 77 at two locations in the width direction. Thus, the bar spring material is formed in an arc shape that overlaps vertically in a plan view. Accordingly, a tensioning force can be applied to the chain 10d with a protrusion having a relatively wide chain width in a normal direction orthogonal to the rotational axis of the chainn 10d with a protrusion while using a round bar spring material. You can get good tension without falling down.
[0055]
Next, the support structure of the first transport device 9 will be described. As shown in FIG. 10, any of the scraping frames 43 to 45 that support each first transport device 9 is divided into the vertical axis cases 46 to 48 that surround the second transmission shaft 17 on the rear side, and the front side is divided. The pulling device support frame 49 fixed to the weeding frame 12x that supports the grass tool 6 is detachably attached by bolting.
[0056]
The right right take-in frame 43 is bolted to the main pipe 51 whose front end is bolted to a stay 50 projecting rearward from the right raising device support frame 49 and to the first vertical shaft case 48 on the right side. The bracket 53 and the auxiliary pipe 52 provided with the bracket 53 at the rear end, and supports a transport cover 54 that is also a member constituting the transport path of the cereal.
[0057]
The drive pulley 9a and the support shaft 9p of the packer 9B are penetrated and fixed to the front and rear intermediate portions of the main pipe 51, and the stay 51b for supporting the driven pulley 9b, which is a tension pulley, is welded to the front end portion. A support shaft 55 that rotatably supports the first driven pulley 10b of the right holding and transporting mechanism 10A is fixed to the end portion. The tip of the auxiliary pipe 52 is welded to the support shaft 9p portion of the main pipe 51. The transport cover 54 (61) in a state of covering the rotating belt 9c with protrusions from above is press-molded into a stepped shape to increase the strength (see FIG. 11).
[0058]
As shown in FIGS. 12 and 13, the bracket 53 is made of a plate material bent in a U shape in a plan view, and a joining portion of the front case portion 48 a and the rear case portion 48 b constituting the first vertical axis case 48. In such a state that the two case portions 48a and 48b are connected together, they are fastened together with four bolts. The rear end portion of the auxiliary pipe 52 bent downward is welded to the bracket 53.
[0059]
As shown in FIGS. 10 and 11, the left left scraping frame 45 is a main pipe whose front end is bolted to a vertical plate-like stay 56 projecting rearward from the left raising device support frame 49. 57, a bracket 59 bolted to the left second vertical axis case 46, and an auxiliary pipe 58 provided with the bracket 59 at the rear end, and a transport cover that is also a member constituting the transport path of the cereal 61 is supported, and basically has the same structure as the right scraping frame 43.
[0060]
A step-shaped transport cover 61 that is press-formed in the same manner as the right transport cover 54 is supported by two stays 62 and 63 at the front and rear, and the rear stay 63 is equipped with a driving pulley 9a and a support shaft 10p of the packer 9B. Has been. The auxiliary pipe 58 has the same structure as that of the right bracket 53 and extends between the left bracket 59 and the main pipe 57 which are fastened together by a connecting bolt between the front case part 46 a and the rear case part 46 b of the second vertical axis case 46. In addition to being installed, a sheet metal guide body 65 is formed across the rear end of the main pipe 57 and the left bracket 59 so as to form a movement path of the chain with projection 10d.
[0061]
As shown in FIGS. 10 and 14, the left and right center scraping frame 44 is basically a pipe bolted to a third longitudinal axis case 47 made of a pipe material surrounding the upper shaft portion 17 c at the left and right center. Consists of only a frame 67, and a press-molded conveyance cover 68 functions as an auxiliary frame. That is, a transport cover 68 is fixed to a pipe frame 67 whose rear end is bolted to a bracket 66 fixed to the third vertical axis case 47, and the front end of the transport cover 68 is raised second from the left. It is bolted to a stay 60 projecting rearward from the device support frame 49.
[0062]
The driving pulley 9a and the support shaft 67a of the packer 9B are fixed to the front end portion of the pipe frame 67, and the bolted portion between the transport cover 68 and the stay 60 makes it possible to adjust the tension of the driven pulley 9b. It is a long hole support structure. That is, the scrambling frames 43 to 45 of any of the three first conveying devices 9 are supported at two locations with the casings 46 to 48 surrounding the second transmission shaft 17, which hinders the transportation of the cereals. There is no such thing. Moreover, all of the three scraping frames 43 to 45 have a detachable structure by bolting.
[0063]
Next, the structure of the connecting portion between the left and right vertical axis cases 46 and 48 and the horizontal axis case 35 will be described. The structure of these two connecting portions is the same except that the directions are opposite to each other, and will be described on the right side for the sake of simplicity.
[0064]
As shown in FIGS. 11 to 14, a flange portion 71 for bolting the horizontal shaft case 35 is provided on the left side surface of the lower end portion of the cylindrical right vertical shaft case 48 having the lower shaft portion 17b therein. The cutting transmission shaft 16 inserted from the flange portion 71 and bevel gears 18 and 18 for interlockingly connecting the cutting transmission shaft 16 and the lower shaft portion 17b are provided. The right vertical axis case 48 and the horizontal axis case 35 use four bolts 73 in a state in which the relative posture is determined by the inlay portion 72 and the positioning means A that are fitted in the axial direction of the cutting transmission shaft 16. Connected and integrated.
[0065]
The right vertical axis case 48 has a two-split structure in which a front case portion 48a having a split surface w along the axial direction of the cutting transmission shaft 16 and a rear case portion 48b are connected to each other. The holder portions 74 that position and support the bearings that support the 16 and the lower shaft portion 17b function in a state where only molding is performed, and it is not necessary to perform any machining such as cutting. Further, both the flange portion 71 and the opening 19 described above are formed across both the case portions 48a and 48b.
[0066]
The opening 19 includes an inlet 19b that draws the protruding chain 10d, which is an endless rotation band, into the left and right vertical casings 48 and 46, and an outlet 19a that sends the protruding chain 10d out of the vertical casings 48 and 46, respectively. Independently formed. That is, the inlet 19b is formed in the rear case portions 48b and 46b, and the outlet 19a is formed in the front case portions 48a and 46a, respectively, and the inlet 19b as the vertical case 48 and 46 in which the front and rear case portions are assembled. As described above, the portion between the outlet 19a is reinforced by connecting the brackets 53, 59 of the left and right scraping frames 43, 45.
[0067]
Incidentally, the main case portion 35S of the horizontal axis case 35 has an upper and lower split structure composed of an upper case portion 35A having a split surface v and a lower case portion 35B, and the left and right holes 70 of the lower case portion 35B are machined. Is formed by. Note that the left vertical axis case 46 and the horizontal axis case 35 are connected by four bolts 73 using the positioning means A and the spigot portion 72 similar to the structure described above.
[0068]
As shown in FIGS. 6 and 10, the horizontal shaft case 35 surrounding the first transmission shaft 16 includes a first vertical shaft case 48 made of aluminum die casting that surrounds the lower shaft portion 17 b on the right side, and the main transmission shaft 15. A steel pipe cutting main frame 12F that supports the cutting unit 2 in the airframe in an enclosed state and a third vertical axis case 47 that surrounds the lower shaft portion 17b at the center of the left and right are connected and integrated, and the crankshaft 20 is A cast iron main case portion 35S integrally formed with a surrounding shaft support case portion 35a and a second shaft support case portion 35b, and a second vertical axis case 46 made of aluminum die casting that surrounds the left lower shaft portion 17b. It is comprised with the sub case part 35H made from an iron pipe connected and integrated.
[0069]
In other words, the cutting main frame 12F is connected and the horizontal shaft case 35 having severe load conditions is made of iron so that the strength is sufficient, and it is sufficient that it has enough strength to support one pulling device 7 and in the middle of the upper and lower sides. The first and second longitudinal axis cases 48 and 46, which are required to have a relatively complicated shape with the opening 19 for driving the chain at the site, are made of aluminum die casting and can be configured easily and inexpensively with a small number of parts.
[Brief description of the drawings]
FIG. 1 is a side view of the front part of a self-removing combine
FIG. 2 is a plan view showing a configuration of a cutting unit
FIG. 3 is a front view showing a configuration of a cutting unit.
FIG. 4 is a system diagram showing a transmission system of a cutting unit.
FIG. 5 is a plan view showing a preprocessing portion of a cutting unit.
6 is a partially cutaway front view showing the main part of the transmission system in FIG. 5. FIG.
FIG. 7 is a side view of the main part showing the transmission structure of the second transfer device on the left side.
FIG. 8 is a partially cutaway plan view showing the drive structure of the reaping device.
FIG. 9 is a partially cutaway side view showing the drive structure of the reaping device.
FIG. 10 is a plan view showing the structure of each scraping frame
FIG. 11 is a side view of a partly cutout showing the left side of the scraping frame part.
FIG. 12 is a partially cutaway plan view showing a bracket portion of the right take-in frame.
13 is a front view of FIG.
14A is a side view of a partly cutout showing a central scraping frame portion, and FIG. 14B is a cross-sectional rear view showing a mounting structure of a conveyance guide body.
FIG. 15 is a plan view showing the structure of a tensioner.
FIG. 16 is a front view showing a relationship between a tensioner and a chain with a protrusion.
FIG. 17 is a perspective view of a tensioner.
FIG. 18 is a plan view showing the size and positional relationship of a take-in rotating body.
[Explanation of symbols]
2 Cutting part
7 Pulling device
9B Stirring rotating body
10 Horizontal transfer device
10A clamping transport mechanism
10a Drive sprocket
10b, 65 Chain guide
10c driven sprocket
10d Chain with protrusion
15 Input shaft
16 Cutting shaft
17 Longitudinal transmission shaft
79, 80 Guide member
85 Intermediate scraping rotor

Claims (2)

A holding and transporting mechanism is provided on the left and right of the cutting part to hold the stockholder side between the protruding chain and the guide member and transports the cereals. A horizontal transfer device that gathers and merges at a location between them, and is provided with an input shaft for inputting power from the fuselage in the middle between the left and right, and a power transmission from the input shaft provided at the lower end of the mowing unit A cutting transmission shaft, and a vertical transmission shaft for driving a pulling device that receives power transmission at both left and right ends of the cutting transmission shaft ;
A drive sprocket equipped on the left and right vertical transmission shafts, and a chain guide body that guides the chain with protrusions by being positioned on the center side in the cutting width direction next to the drive sprocket; A driven sprocket disposed on the front side of the drive sprocket and the chain guide body and at an apex position having a substantially triangular shape in a front view in plan view, and the drive sprocket, the chain guide body, and the driven sprocket. Constructed with the above-mentioned chain with projections ,
A reaping part of a reaping machine in which a squeezing rotary body that squeezes and conveys the harvested cereal is integrally rotated with the left and right driven sprockets. Between the left and right of the left and right take-rotating body, these left and right and one bite to take-rotating member of the take-rotating member provided intermediate take-rotating body driven, drive and cause the left and right intermediate unit The intermediate vertical transmission shaft is provided in a state of being driven by the cutting transmission shaft, and the intermediate vertical transmission shaft is disposed immediately after the intermediate take-up rotating body and in front of the joining point of the left and right gripping conveyance mechanisms. The reaping part of the reaper according to claim 1, wherein a reaping part for three-row mowing is configured.

Images