JP2015089339A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester inhibiting torsional power from acting on an actuator part of a lever position detecting switch to prevent breakage of the actuator part.SOLUTION: A combine harvester 1 comprises a contact-type lever position detecting switch 16 detecting an operation position of an emission clutch lever 14. The lever position detecting switch 16 includes: an actuator part 16a displacing in accordance with contact to the emission clutch lever 14; and a switch part 16b detecting the displacement of the actuator part 16a. When the lever position detecting switch 16 is disposed so that the displacement direction of the actuator part 16a differs from a direction for operating the emission clutch lever 14, a spring material 17 intervening between the actuator part 16a and the emission clutch lever 14 is set in the vicinity of the lever position detecting switch 16, to make the emission clutch lever 14 in contact with the actuator part 16a via the spring material 17.

Description

  The present invention relates to a combine equipped with a contact-type lever position detection switch for detecting an operation position of a discharge clutch lever.

  A combine equipped with a discharge auger that discharges the grain in the grain tank to the outside of the machine is known. This type of combiner includes a discharge clutch interposed in the power transmission path of the discharge auger, and a discharge clutch lever that engages / disengages the discharge clutch. It is comprised so that discharge operation | movement may be performed (for example, refer patent documents 1-3).

  Further, this type of combiner may include a contact-type lever position detection switch that detects the operation position of the discharge clutch lever. For example, in order to prevent the engine from being started when the discharge clutch lever is engaged, a lever position detection switch for detecting the engagement operation of the discharge clutch lever is provided.

JP 2006-136269 A JP 2007-181430 A JP 2007-236218 A

  Usually, a contact-type lever position detection switch includes an actuator portion that is displaced in response to contact with the discharge clutch lever, and a switch portion that detects the displacement of the actuator portion. If the lever position detection switch is arranged so as to be different from the operation direction of the discharge clutch lever, a torsional force acts on the actuator portion due to contact with the discharge clutch lever, and the actuator portion may be damaged.

The present invention has been created for the purpose of solving these problems in view of the above-described circumstances, and includes a grain tank for storing harvested grains, and the grains in the grain tanks outside the machine. A discharge auger to be discharged into the vehicle, a discharge clutch interposed in the power transmission path of the discharge auger, a discharge clutch lever to turn on / off the discharge clutch, and a contact-type lever position detection to detect the operation position of the discharge clutch lever The lever position detection switch includes an actuator portion that is displaced in response to contact with the discharge clutch lever, and a switch portion that detects the displacement of the actuator portion, and the displacement direction of the actuator portion is When arranging the lever position detection switch so that it is different from the operation direction of the discharge clutch lever, the vicinity of the lever position detection switch A spring member interposed between the actuator unit and the discharge clutch lever provided, and wherein the contacting with the actuator portion of the discharge clutch lever via the spring member.
Further, the spring material is fixed together with a fixing screw of a lever position detection switch.

According to the first aspect of the present invention, the spring member interposed between the actuator portion and the discharge clutch lever is provided, and the discharge clutch lever is brought into contact with the actuator portion via the spring member, so that the displacement direction of the actuator portion is discharged. Even if the lever position detection switch is arranged so as to be different from the operation direction of the clutch lever, it is possible to avoid the torsional force from acting on the actuator part and to prevent the actuator part from being damaged.
According to the second aspect of the present invention, the spring material is fastened together with the fixing screw of the lever position detection switch, so that a fixing member for the spring material is not required and the cost can be reduced.

It is a perspective view of a combine. It is a perspective view which shows the cutting | disconnection operation state of a discharge clutch lever. It is a perspective view which shows the entering operation state of a discharge clutch lever. It is a front view which shows the entering operation state of a discharge clutch lever. It is a side view which shows the entering operation state of a discharge clutch lever.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 1 is a combine, and the combine 1 stores a pre-processing unit 2 that cuts off the stems, a threshing unit 3 that threshs and sorts the grains from the stems, and the selected grains are stored. A grain tank 4, a discharge auger 5 that discharges grains in the grain tank 4 to the outside of the machine, a post-processing unit 6 that performs post-processing of the threshed waste, a driver's seat 7, and various operation tools are arranged. The driving unit 8 and the crawler type traveling unit 9 are provided.

  In the lower part of the grain tank 4, a horizontal spiral (not shown) facing in the front-rear direction is installed, and the grain in the grain tank 4 is changed to the rear lower end of the grain tank 4 according to the rotational drive of the horizontal spiral. It is discharged from the department. A vertical pipe 10 of the discharge auger 5 is pivotably connected to the rear lower end portion of the grain tank 4, and a horizontal pipe 11 of the discharge auger 5 is connected to the upper end portion of the vertical pipe 10 so as to be movable up and down. ing. The vertical pipe 10 and the horizontal pipe 11 are internally provided with a helical carrier (not shown) equivalent to the horizontal helix, and these helical carriers are rotationally driven in a series with the horizontal helix so that the grains Grains in the tank 4 are conveyed to the horizontal pipe 11 via the vertical pipe 10 and discharged from the discharge port (not shown) formed at the tip of the horizontal pipe 11 to the outside of the machine. ing.

  The horizontal pipe 11 can be operated to any lifting position according to the driving of the lifting electric motor 12, and can be operated to any turning position according to the driving of the turning electric motor (not shown). However, it is stored in a predetermined storage position on the airframe except when the grain is discharged (when traveling on the road, during operation, when storing the airframe, etc.). As shown in FIG. 1, the storage position is a position along a diagonal line connecting the right rear end and the left front end of the combine 1, and the horizontal pipe 11 in the storage position is received and supported at the left rear of the operation unit 8. An auger receiver 13 having a V-shape when viewed from the front is disposed. In addition, although the horizontal pipe 11 of this embodiment is comprised so that folding is possible in the intermediate part, the horizontal pipe which cannot be folded may be sufficient.

  An engine (not shown) is mounted below the operation unit 8. Engine power is transmitted to the preprocessing unit 2, the threshing unit 3, the grain tank 4, the discharge auger 5, the post-processing unit 6, and the traveling unit 9. A power transmission path from the engine to the horizontal spiral of the grain tank 4 is provided with a discharge clutch (not shown) made up of a belt tension type clutch. When the helical transport body of the discharge auger 5 is driven to rotate, the grains in the grain tank 4 are conveyed to the horizontal pipe 11 via the vertical pipe 10 and discharged from the outlet of the horizontal pipe 11 to the outside of the machine. The

  As shown in FIGS. 1 to 5, in the vicinity of the auger receiver 13, a discharge clutch lever 14 that engages / disengages the discharge clutch and a lever bracket 15 that supports the discharge clutch lever 14 are provided. The lever bracket 15 includes a lever support shaft 15a that supports the discharge clutch lever 14 so that the discharge clutch lever 14 can be rotated up and down (rotatably forward and backward), and an upward operation of the discharge clutch lever 14 at a lever position where the discharge clutch is disconnected. A cut-off side stopper portion 15b for restricting contact, an entrance-side stopper portion 15c for restricting contact operation of the discharge clutch lever 14 at the lever position where the discharge clutch is engaged, and a lever position detection switch 16 described later. Is provided with a switch mounting portion 15d.

  The discharge clutch lever 14 of the present embodiment includes an arm portion 14a connected to a belt tension arm (not shown) of the discharge clutch via a wire, and according to a pulling operation or a loosening operation of the wire by the discharge clutch lever 14. Engage / disengage the discharge clutch. Note that the present invention includes an actuator such as an electric motor for turning on / off the discharge clutch instead of the wire, and a combine for turning on / off the discharge clutch based on the drive control of the actuator according to the position detection of the discharge clutch lever 14. It can also be applied to.

  The lever position detection switch 16 is a contact type detection switch, and includes an actuator unit 16a that is displaced in response to contact with the discharge clutch lever 14, and a switch unit 16b that detects displacement of the actuator unit 16a. And the lever position detection switch 16 of this embodiment is attached to the switch attachment part 15d of the lever bracket 15 in order to detect the cutting operation of the discharge clutch lever 14, as shown in FIGS.

  When the lever position detection switch 16 is mounted as shown in FIGS. 2 to 5, the displacement direction (left-right direction) of the actuator portion 16a is different from the operation direction (vertical direction and front-rear direction) of the discharge clutch lever 14. The contact with the clutch lever 14 may cause a torsional force to act on the actuator portion 16a, causing the actuator portion 16a to be damaged.

  Therefore, in the combine 1 according to the embodiment of the present invention, the spring material 17 interposed between the actuator portion 16a and the discharge clutch lever 14 is provided in the vicinity of the lever position detection switch 16, and the discharge is performed via the spring material 17. The clutch lever 14 is brought into contact with the actuator portion 16a. For example, the spring material 17 of the present embodiment is made of a plate-like elastic plate material, extends in an inclined manner from the upper end portion of the lever position detection switch 16 toward the lower left, and overlaps the cutting operation path of the discharge clutch lever 14. doing. When the discharge clutch lever 14 is operated to the disengaged position, the spring material 17 is displaced in the proximity direction of the lever position detection switch 16 by being pressed while the outer surface contacts the discharge clutch lever 14, and The actuator portion 16a is pushed on the side surface, and the lever position detection switch 16 is switched to the ON state.

  In this way, when the spring material 17 interposed between the actuator portion 16a and the discharge clutch lever 14 is provided, and the discharge clutch lever 14 is brought into contact with the actuator portion 16a via the spring material 17, the displacement direction of the actuator portion 16a. Even if the lever position detection switch 16 is arranged so that the operation direction of the discharge clutch lever 14 is different, it is possible to prevent the torsional force from acting on the actuator portion 16a and to prevent the actuator portion 16a from being damaged. Become.

  Although the spring material 17 receives a torsional force from the discharge clutch lever 14, the spring material 17 is prevented from being damaged by selecting a material having higher resistance to the torsional force than the actuator portion 16 a of the lever position detection switch 16. be able to. Further, even if the spring material 17 is damaged, it is only necessary to replace the spring material 17, so that the part replacement cost can be reduced as compared with the case where the lever position detection switch 16 is replaced.

  The spring member 17 is preferably fixed together with a fixing screw 18 for fixing the lever position detection switch 16 to the lever bracket 15. For example, in this embodiment, when the lever position detection switch 16 is fixed to the lever bracket 15 with a pair of upper and lower fixing screws 18 and 19, the cylindrical portion 17 a welded to the base end portion of the spring material 17 is connected to the upper fixing screw 18. It is fixed in a fastened shape. If it does in this way, the cost reduction can be aimed at by making the fixing tool only for a spring material unnecessary.

  According to the present embodiment configured as described, the grain tank 4 that stores the harvested grain, the discharge auger 5 that discharges the grain in the grain tank 4 to the outside of the machine, and the power of the discharge auger 5 The combine 1 includes a discharge clutch interposed in the transmission path, a discharge clutch lever 14 that engages / disengages the discharge clutch, and a contact-type lever position detection switch 16 that detects an operation position of the discharge clutch lever 14. The lever position detection switch 16 includes an actuator portion 16a that is displaced according to contact with the discharge clutch lever 14, and a switch portion 16b that detects the displacement of the actuator portion 16a. The displacement direction of the actuator portion 16a is determined by the discharge clutch. In arranging the lever position detection switch 16 so as to be different from the operation direction of the lever 14, the lever position detection switch 6 is provided with a spring material 17 interposed between the actuator portion 16a and the discharge clutch lever 14, and the discharge clutch lever 14 is brought into contact with the actuator portion 16a via the spring material 17, so that the displacement of the actuator portion 16a Even if the lever position detection switch 16 is arranged so that the direction is different from the operation direction of the discharge clutch lever 14, it is possible to prevent the torsional force from acting on the actuator portion 16a and to prevent the actuator portion 16a from being damaged.

  Further, since the spring member 17 is fastened together with the fixing screw 18 of the lever position detection switch 16, a fixing member dedicated to the spring member is not required, and the cost can be reduced.

DESCRIPTION OF SYMBOLS 1 Combine 4 Grain tank 5 Discharge auger 14 Discharge clutch lever 15 Lever bracket 16 Lever position detection switch 16a Actuator part 16b Switch part 17 Spring material 18 Fixing screw

Claims (2)

A grain tank for storing the harvested grain;
A discharge auger for discharging the grains in the grain tank out of the machine;
A discharge clutch interposed in the power transmission path of the discharge auger;
A discharge clutch lever for engaging / disengaging the discharge clutch,
A combine comprising a contact-type lever position detection switch for detecting an operation position of the discharge clutch lever,
The lever position detection switch is
An actuator that is displaced in response to contact with the discharge clutch lever;
A switch unit for detecting the displacement of the actuator unit,
In arranging the lever position detection switch so that the displacement direction of the actuator part is different from the operation direction of the discharge clutch lever,
A combine comprising a spring material interposed between an actuator portion and a discharge clutch lever in the vicinity of the lever position detection switch, and the discharge clutch lever is brought into contact with the actuator portion via the spring material.   The combine according to claim 1, wherein the spring material is fixed together with a fixing screw of a lever position detection switch.

Images