JP2007228901A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine equipped with a splashing plate at the final end part of a succeeding screw, while securing the size of the splashing plate, decreasing the driving load of the succeeding screw within its non-conveying range. <P>SOLUTION: This combine 1 discharging cereal grains stored in a cereal grain tank 4 through a vertical pipe 8 building-in a vertical screw 14 as freely rotatable, a succeeding pipe 9 joined with the upper end part of the vertical pipe 8 as facing to right angle direction and building-in a succeeding screw as freely rotatable and a discharging pipe 10 joined with the tip end part of the succeeding pipe 9 by facing right angle direction is provided by on installing the splashing plate 15c for splashing the cereal grains toward the discharging pipe 10 at the final end part of the succeeding screw 15, forming a first splashing surface 15e without having a run out angle and a second splashing surface 15f having the run out angle at the splashing plate 15c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine that discharges the grain in a grain tank to the outside of the machine via a vertical pipe, a takeover pipe and a discharge pipe, and in particular, at the end position of a takeover spiral installed in the takeover pipe. The present invention relates to a combine provided with a spring plate that jumps out toward a discharge pipe.

  In the combine, the grain stored in the grain tank is connected to the vertical pipe in which the vertical spiral is rotatably mounted, and the takeover spiral is rotatably mounted, and is connected to the upper end of the vertical pipe in a direction perpendicular to the vertical pipe. There is a type in which a takeover pipe and a discharge spiral are rotatably mounted and discharged to the outside of the machine via a discharge pipe connected to the front end portion of the takeover pipe so as to face at right angles.

  In this type of combine, a spring plate is provided at the end of the vertical helix or takeover spiral to facilitate the transfer of the grain from the vertical pipe to the takeover pipe and the transfer of the grain from the takeover pipe to the discharge pipe. The jump plate is configured to jump the grain toward the downstream pipe as the spiral rotates (see, for example, Patent Document 1).

When a jump plate is provided at the upper end of the vertical spiral, an opening (a jump space) that linearly communicates the end of the vertical pipe and the start of the discharge pipe is formed in the takeover spiral. It is preferable that the vertical spiral spring plate is configured so as to spring the grain. If it does in this way, since the grain bounced off by the spring plate of the vertical helix becomes difficult to hit the takeover helix, the grain can be smoothly taken over.
JP 2003-79231 A

  By the way, in the conventional combine, a large jumping plate is provided at the end of the takeover spiral, and the grain is actively jumped toward the discharge pipe. There is a problem in that the driving load of the take-up spiral becomes large in the range of the take-out action.

  Therefore, it is conceivable to reduce the take-up spiral spring plate, but if the take-up spiral is simply reduced, the transfer capacity of the take-up spiral may be reduced, and the transfer from the take-up pipe to the discharge pipe may not be performed smoothly. There is. Also, it is conceivable to extend the end of the takeover spiral to compensate for the decrease in the transfer capacity, but in this case, the space for jumping from the vertical helix to the takeover helix is reduced, so that the transfer resistance is reduced in the takeover pipe. May increase.

The present invention has been created in order to solve these problems in view of the above circumstances, and a vertical pipe in which a vertical helix is rotatably mounted with a grain stored in a grain tank, The takeover spiral is rotatably mounted, and the takeover pipe connected to the upper end of the vertical pipe in a direction perpendicular to the vertical pipe, and the discharge spiral is rotatably mounted, and the tip of the takeover pipe is directed to the right angle. In a combine that discharges to the outside via a connected discharge pipe, in providing a jump plate that jumps grain toward the discharge pipe at the terminal position of the takeover spiral, A first jumping surface having no clearance angle and a second jumping surface having a clearance angle are formed. In this way, it is possible to reduce the driving load of the takeover spiral in the non-transport range while ensuring the size of the spring plate. In addition, since the substantial working length of the takeover spiral can be extended by using the second springing surface, the carrying capacity of the takeover spiral can be improved. In addition, the jumping plate can extend the substantial working length of the takeover spiral without greatly changing the end position of the takeover spiral, so that a sufficient jumping space from the vertical spiral to the takeover spiral is secured, and the takeover pipe An increase in the conveyance resistance can be avoided.
Further, the takeover spiral is a rotary shaft that is rotatably supported by a bearing holder, a spiral plate provided on an outer peripheral portion of the rotary shaft, a cover that covers a gap between the rotary shaft and the bearing holder, and the spring And a jumper plate, and the jumper plate is fixed to the spiral plate and the cover. If it does in this way, the support strength of a jumping board can be raised compared with the former which fixed the jumping board only to the spiral board.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a combine. The combine 1 includes a pre-processing unit 2 that cuts the stems and a threshing unit 3 that threshs the grains from the cutting stalks and selects the threshed grains. And a grain tank 4 for storing the selected grain, a post-processing unit 5 for discharging the threshed waste, a crawler-type traveling unit 6, and an operation unit 7 provided with various operation tools. It is prepared for.

  The grains stored in the grain tank 4 are a fixed pipe (not shown) connected to the lower rear side of the grain tank 4, a vertical pipe 8 rotatably connected to the fixed pipe, and the vertical pipe. Outside the machine via a discharge auger comprising a take-up pipe 9 connected to the upper end of the pipe 8 in a direction perpendicular to the upper end and a discharge pipe 10 connected to the tip of the take-up pipe 9 in a direction perpendicular to the end. Discharged. The vertical pipe 8 is rotated forward and backward by a turning motor (not shown), and the discharge pipe 10 is turned accordingly. The takeover pipe 9 is configured by rotatably connecting a vertical case 9a integrally connected to the vertical pipe 8 side and a horizontal case 9b integrally connected to the discharge pipe 10 side. Further, a stay 12 is interposed between the stay support shaft 11 protruding from the vertical case 9a of the takeover pipe 9 and the discharge pipe 10, and is interposed between the stay 12 and the vertical case 9a. The discharge pipe 10 is moved up and down by the lifted cylinder 13.

  As shown in FIGS. 3 to 6, the vertical pipe 14, the takeover spiral 15, and the discharge spiral 16 are rotatably mounted on the vertical pipe 8, the takeover pipe 9, and the discharge pipe 10, respectively. Each spiral 14, 15, 16 is formed by welding spiral plates 14 b, 15 b, 16 b to the outer peripheral portions of the rotating shafts 14 a, 15 a, 16 a, and bevel gears 19, 20 housed in bearing holders 17, 18. Via each other. Thereby, with the rotation of the vertical spiral 14, the takeover spiral 15 and the discharge spiral 16 rotate integrally, and the grains in the pipes 8, 9, 10 are conveyed toward the discharge port 10 a of the discharge pipe 10. .

  The vertical spiral 14 conveys the grain upward while rotating in the direction of the arrow A shown in the figure, and the grain that has reached its upper end is illustrated by a spring plate 14 c provided at the upper end of the vertical spiral 14. It is configured to jump out in the direction of arrow B, that is, toward the takeover pipe 9 side. The takeover pipe 9 of the present embodiment is formed to have a larger diameter than the vertical pipe 8, and the entire jump plate 14 c can face the takeover pipe 9. Thereby, it is possible to reliably feed the grain bounced off by the bounce plate 14 c into the takeover pipe 9.

  The spiral plate 15b of the takeover spiral 15 conveys the grain to the tip side while rotating in the direction of the arrow C shown in the figure, and the spring plate 15b that is provided at the terminal end of the takeover spiral 15 15c is configured to jump out in the direction of arrow D shown in the figure, that is, toward the discharge pipe 10 side. The takeover spiral 15 is not provided over the entire circumference of the rotary shaft 15a, but is provided over approximately 250 ° leaving a predetermined opening 15d. In other words, the take-up spiral 15 has an opening 15d that linearly communicates the conveyance end portion of the vertical pipe 8 and the conveyance start end portion of the discharge pipe 10 with a predetermined angle θ1 (approximately 110 °) around the rotation shaft 15a. ).

  The rotation ratio between the vertical spiral 14 and the takeover spiral 15 is set to 1: 1, and the takeover spiral 15 rotates in the C direction while the vertical spiral 14 rotates in the A direction. Grain transport to Here, the relative rotational positions of the vertical spiral 14 and the takeover spiral 15 are set on the condition that the spring plate 14c of the vertical spiral 14 jumps the grain toward the opening 15d of the takeover spiral 15. The Thereby, the grain bounced off by the jumping plate 14c will be smoothly conveyed without hitting the takeover spiral 15, and as a result, it is possible to prevent clogging of the grain and increase in the conveyance load, It is also possible to reduce grain damage. That is, normally, when the kernel is discharged while turning the engine at a rated value, most of the kernel is conveyed directly from the opening 15d to the discharge spiral 16 side by the spring plate 14c of the vertical spiral 14, and the takeover spiral 15 and the splash are carried out. The drawer plate 15c is hardly functioning. The takeover spiral 15 is mainly used when the engine is discharged at low speed and at the time of filling the grain (when the grain is discharged and the grain remains in the spiral 14, 15, 16). Will increase.

  As shown in FIG. 7, the jump plate 15c provided at the terminal end of the take-up spiral 15 includes a first jump surface 15e having no clearance angle, and a second jump surface 15f having a clearance angle. Is formed. More specifically, the jump plate 15c of the present embodiment is a plate member whose center in the width direction is bent, and the first jump surface 15e fixed to the terminal end of the takeover spiral 15 is the takeover spiral. The second jumping surface 15f, which faces the direction perpendicular to the rotation direction 15 and extends outward from the first jumping surface 15e, has a predetermined angle θ2 with respect to the first jumping surface 15e. It is inclined in the escape direction by (for example, about 30 ° to 60 °). In this way, the drive load of the take-up spiral 15 in the non-transport range can be reduced while ensuring the size of the jump plate 15c, so that fluctuations in the drive torque of the take-up spiral 15 can be suppressed while maintaining the required jump performance. it can. In addition, the second springing surface 15f of the present embodiment extends the substantial working length of the takeover spiral 15 without greatly changing the end position of the takeover spiral 15, thereby improving the conveying capability of the takeover spiral 15. Not only can the opening 15d of the takeover spiral 15 be reduced, but also it can be avoided. As a result, a sufficient jumping space from the vertical spiral 14 to the takeover spiral 15 can be secured, and an increase in conveyance resistance in the takeover pipe 9 can be avoided.

  In the present embodiment, the takeover spiral 15 includes a rotary shaft 15a that is rotatably supported by bearing holders 17 and 18, a spiral plate 15b provided on the outer periphery of the rotary shaft 15a, a rotary shaft 15a, and a bearing holder. In the configuration including the cover 15g that covers the gap between the first and second plates 18 and 18 and the spring plate 15c, the spring plate 15c is fixed to the spiral plate 15b and the cover 15g. In this way, the support strength of the jump plate 15c can be increased as compared to the conventional case where the jump plate 15c is fixed only to the spiral plate 15b.

  In this embodiment, in order to suppress the drive torque fluctuation of the vertical spiral 14 caused by the spring plate 14c, the shape and the mounting position of the spring plate 14c provided in the vertical spiral 14 are also optimized. Specifically, as shown in FIG. 3, the height of the protruding plate 14 c is made smaller than the conventional one (for example, 25 mm → 10 mm), and is attached to the position before the end of the vertical spiral 14. In this way, the driving load of the vertical spiral 14 in the non-conveying range is reduced, so that fluctuation in the driving torque of the vertical spiral 14 can be suppressed. Moreover, since the spiral plate 14b is extended after the jumping plate 14c, the grains returned from the takeover spiral 15 side can be picked up.

  Moreover, in this embodiment, in order to reduce the conveyance resistance of the grain in the takeover pipe 9, the shape of the takeover pipe 9 is also optimized. For example, as shown in FIG. 8, boss portions 17 a and 18 a that support bearing holders 17 and 18 are provided in the grain conveyance path of the takeover pipe 9, but at least the bearing holder 17 that supports the upper end portion of the vertical spiral 14. The boss portion 17a is disposed on an extension line of the vertical spiral 14 (rotating shaft 14a). If it does in this way, since the boss | hub part 17a is distribute | arranged in the position which becomes the shadow of the bearing holder 17, a contact opportunity with a grain will reduce significantly, As a result, the conveyance resistance of the grain in the takeover pipe 9 will become small. it can. Moreover, in this embodiment, the inclined guide surfaces 17b and 18b which have a predetermined clearance angle are formed in the grain contact side of the boss | hub parts 17a and 18a. If it does in this way, the conveyance resistance of the grain in the takeover pipe 9 can be made still smaller, and the grain can be taken over smoothly.

  According to the present embodiment configured as described, the grain stored in the grain tank 4 is provided with a vertical pipe 8 that rotatably houses the vertical spiral 14 and a takeover spiral 15 that is rotatably mounted. Via a takeover pipe 9 connected to the upper end of the pipe 8 in a direction perpendicular to the pipe 8 and a discharge pipe 10 having a discharge spiral 16 rotatably mounted and connected to the tip of the takeover pipe 9 in a direction perpendicular to the pipe 8 Then, in the combine 1 that is discharged out of the machine, at the terminal position of the takeover spiral 15, when the jump plate 15 c that jumps the grain toward the discharge pipe 10 is provided, the jump plate 15 c does not have a clearance angle. Since the first springing surface 15e and the second springing surface 15f having a clearance angle are formed, the driving load of the take-up spiral 15 in the non-conveying range is secured while ensuring the size of the springing plate 15c. It is possible to fence. In addition, since the substantial working length of the takeover spiral 15 can be extended by using the second springing surface 15f, the transfer capability of the takeover spiral 15 can be improved. Further, the jump plate 15c can extend the substantial working length of the takeover spiral 15 without greatly changing the end position of the takeover spiral 15, so that the jump space from the vertical spiral 14 to the takeover spiral 15 is sufficiently large. It is possible to prevent the increase in the conveyance resistance in the takeover pipe 9.

  Further, the take-up spiral 15 includes a rotation shaft 15a rotatably supported by bearing holders 17 and 18, a spiral plate 15b provided on the outer periphery of the rotation shaft 15a, a rotation shaft 15a, and bearing holders 17 and 18. The cover 15g covering the gap and the jump plate 15c are configured, and the jump plate 15c is fixed to the spiral plate 15b and the cover 15g. Therefore, the jump plate 15c is fixed only to the spiral plate 15b. Compared with the conventional case, the support strength of the spring-out plate 15c can be increased.

It should be noted that the present invention is not limited to the above-described embodiment, and can be modified as appropriate without departing from the scope of the claims.
For example, as shown in FIG. 9, the spring plate 14 c of the vertical spiral 14 may be attached to the end position of the vertical spiral 14 instead of the front end position of the vertical spiral 14. Even in this case, the driving load of the vertical spiral 14 in the non-conveyance range is reduced, so that fluctuations in the driving torque of the vertical spiral 14 can be suppressed.
Further, as shown in FIG. 10, the spring plate 14c of the vertical spiral 14 may be omitted. Even in this case, the driving load of the vertical spiral 14 in the non-conveyance range is reduced, so that fluctuations in the driving torque of the vertical spiral 14 can be suppressed.
Further, as shown in FIG. 11, the boss portion 17a of the bearing holder 17 that supports the upper end portion of the vertical spiral 14 is not disposed on the extension line of the vertical spiral 14 (rotating shaft 14a), but the vertical spiral 14 (rotating shaft 14a). ) May be arranged along a right angle direction. In this case, it is preferable to form an inclined guide surface 17b having a predetermined clearance angle on the grain contact side of the boss portion 17a to reduce the conveyance resistance with the grain.

It is a side view of a combine. It is a top view of a combine. It is a front sectional view showing the takeover part of the discharge auger. It is a sectional side view which shows the takeover part of a discharge auger. It is a plane sectional view showing the takeover part of the discharge auger. It is a perspective sectional view showing the takeover part of the discharge auger. (A) is a top view of a takeover spiral, (B) is a perspective view. (A) is an expanded sectional view showing a takeover part of a discharge auger, (B) is an XX sectional view, and (C) is a YY sectional view. It is an expanded sectional view showing the takeover part of the discharge auger concerning other embodiments. It is an expanded sectional view showing the takeover part of the discharge auger concerning other embodiments. (A) is an expanded sectional view showing a takeover part of a discharge auger concerning other embodiments, (B) is an XX sectional view, and (C) is a YY sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 4 Grain tank 8 Vertical pipe 9 Takeover pipe 10 Discharge pipe 10 Carry-out pipe 14 Vertical spiral 14c Jumping board 15 Handing spiral 15c Jumping board 15e First jumping surface 15f Second jumping surface 15g Cover 16 discharge Spiral 17 Bearing holder 18 Bearing holder

Claims (2)

  A vertical pipe in which the vertical spiral is rotatably installed, and a take-up pipe that is rotatably connected to the upper end of the vertical pipe and is connected to the upper end of the vertical pipe. , In the combine that discharges the spiral to the outside through the discharge pipe connected to the front end of the takeover pipe in a direction perpendicular to the end of the takeover spiral, In providing a jumping plate that jumps toward the discharge pipe, a first jumping surface having no clearance angle and a second jumping surface having a clearance angle are formed on the jumping plate. Combine that is characterized by that.   A rotating shaft rotatably supported by a bearing holder; a helical plate provided on an outer peripheral portion of the rotating shaft; a cover that covers a gap between the rotating shaft and the bearing holder; and the protruding plate The combine according to claim 1, wherein the jump plate is fixed to the spiral plate and the cover.

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