JP2011177040A - Reaping and floating device of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reaping and floating device of a combine harvester, in which the position of a reaping conveying device is held with a stable elastic force, whereby abnormal vibrations on the basis of the ground is less generated to enable the stable working travel of the combine harvester. <P>SOLUTION: The spring tension of a reaping balance spring device (3) supporting the reaping conveying device (2) on the front portion of a travel frame (1) is adjusted by automatically controlling the attaching position of either of a grounding sensor (4) to soil and a travel load sensor (5) based on the detection information of the grounding sensor (4) or a travel load sensor (5) in a far/near direction to the other to change the total length of the balance spring (8). Furthermore, the spring tension of the reaping balance spring device (3) is adjusted by automatically controlling the attaching position of either of an attaching position on the travel frame (1) side and an attaching position of the reaping conveying device (2) side based on the detection information of the grounding sensor (4) or the travel load sensor (5) in a vertical direction to the other attaching position to change and adjust the total length of the balance spring (8). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a harvesting floating device for a combine in which a harvesting conveying device is supported by a harvesting balance spring device.

  Conventionally, a combine having a configuration in which the cutting part is received and supported by the elastic balance mechanism at the front part of the body frame in a state where the cutting part is in contact with the surface of the field is disclosed as a publicly known technique as shown in Patent Document 1 below, for example. ing. In this publication, an elastic balance mechanism 50 that elastically receives and supports a cutting part is inserted and supported from the front in a support lot 54 fixed to the body frame 16 in a cantilever direction, and is attached to the front end of the elastic balance mechanism 50. FIG. 11 shows a technique for detachably abutting and supporting a cutting portion with a receiving portion provided. Further, as shown in FIG. 11, the elastic balance mechanism 50 is a pair of front and rear opposed to each other so as to be capable of changing the interval. Are provided with a coil spring 53 and supported by a central threaded support lot 54 to adjust the initial compression state of the coil spring 53. A ground pressure is obtained in accordance with the cutting operation. Techniques for making such adjustments are disclosed.

Japanese Patent Laid-Open No. 2007-89419

  According to the above-mentioned patent document 1, “the configuration described above allows the elastic force of the elastic balance mechanism to be arbitrarily adjusted by setting the initial compression amount of the coil spring held by adjusting the distance between the spring receiving members. It is easy to adapt to the weight of the cutting part of the machine body and the hardness of the field. "This type of cutting part is floating with a harvesting combine that is suspended by an elastic balance mechanism in a state of following the ground. A known technique of the device is disclosed.

  However, the above-described conventional spring pressure adjustment operation does not go out of manual adjustment using a tool, and the adjustment standard is ambiguous and is based on the experience and intuition of the operator. Therefore, conventionally known technology utilizes a control mechanism that is controlled based on information detected by a sensor or the like, or operation information in an initial setting of an accessory device equipped in a combine, as in the present invention described below, Compared to a system that performs automatic adjustment, a complicated adjustment operation is required, which places a heavy burden on the operator, and the adjustment criteria are greatly different from person to person.

  The invention according to claim 1 is the harvesting floating device for a combine, wherein the harvesting conveying device (2), which is mounted on the front portion of the traveling frame (1) so as to be movable up and down, is supported by the harvesting balance spring device (3). The trimming balance spring device (3) is attached to the traveling frame (1) on the basis of the detection information of the ground contact sensor (4) or the traveling load sensor (5) for detecting the degree of soil softness in the field. The position or the mounting position on the cutting and conveying device (2) side is adjusted by changing the overall length of the balance spring (8) by automatically adjusting the position in the perspective direction with respect to the other; The harvesting floating device of the combine which is characterized by the above.

  In the cutting and conveying device (2), the spring tension of the cutting and balancing spring device (3) is automatically adjusted according to the soil conditions of the field, and the tension is maintained by the elastic force according to the softness of the soil. Promoted. Therefore, the combine (6) moves forward stably while the cutting and conveying device (2) follows the field scene, and of course, the cutting height is made uniform, and the entry into the soil and obstacles is caused by the elastic action. It can be avoided and almost no damage occurs, and the operating force for cutting up and down can be greatly reduced.

  According to a second aspect of the present invention, in the cutting balance spring device (3), the spring tension is measured on the traveling frame (1) side based on detection information of the grounding sensor (4) or the traveling load sensor (5). Either the mounting position or the mounting position on the cutting and conveying device (2) side is automatically adjusted in the vertical direction with respect to the other mounting position to change the total length of the balance spring (8). The combine harvesting floating device according to claim 1, wherein the combine harvesting floating device is adjusted.

  The cutting balance spring device (3) adjusts the spring tension by automatically adjusting the mounting position on one side up and down with respect to the mounting position on the other side to change the total length of the balance spring (8). The spring tension can be automatically adjusted to the strength suitable for the field, and the cutting operation is stabilized.

  According to a third aspect of the present invention, in the cutting balance spring device (3), the spring tension on the traveling frame (1) side is determined based on the detection information of the grounding sensor (4) or the traveling load sensor (5). The mounting position is adjusted by automatically adjusting the mounting position in the front-rear direction with respect to the mounting position on the cutting and conveying device (2) side to change the total length of the balance spring (8). The combine harvesting floating device according to Item 1 is used.

  The mowing balance spring device (3) is excellent in that the spring tension can be automatically adjusted, and the configuration can be simplified by moving back and forth.

  The invention according to claim 1 is for automatically adjusting the spring tension of the harvesting balance spring device (3) to a strength adapted to the soil conditions of the field, wherein the harvesting and conveying device (2) has a stable elastic force. It has the characteristics that it can be stably propelled by holding and holding tension, and generating less abnormal vibration with reference to the ground surface. Then, while the cutting and conveying device (2) follows the field scene, it advances stably as described above, and of course, the cutting height is made uniform, as well as obstacles in the middle and entry into the soil are elastically acting. Therefore, the front part of the cutting and conveying device, in particular, the weed pods are hardly damaged, and the operating force for up and down cutting can be greatly reduced.

  Since the invention according to claim 2 directly measures the degree of hardness of the soil with the ground sensor (4) and automatically adjusts the spring tension based on the information, the feature is that it can be adjusted to the soil hardness accurately. is there. And, in particular, when the mounting position on the cutting and conveying device side of the cutting balance spring device (3) is adjusted up and down, the mounting position uses a cutting frame that is arranged in an inclined manner in the vertical direction, It becomes the structure which raises / lowers along this, and while a structure becomes simple, the movement of an up-down direction is stabilized.

  According to the third aspect of the present invention, in the small combine, the cutting balance spring device (3) does not become an obstacle to the traveling mission case disposed between the traveling devices at the front of the airframe, and interference can be avoided. . And even if the moving distance of the mounting position is shortened, since the movement is in the front-rear direction, the change in the total length of the balance spring 8 can be increased, so that the spring tension can be adjusted sufficiently, and the target function can be achieved even in a narrow space. A device capable of exhibiting the above can be provided. And since it is the structure which moves the attachment position by the side of a driving | running | working frame (1) in the front-back direction with respect to the attachment position by the cutting and conveying apparatus (2), it is a moving space of the front-back direction at the side of the driving | running | working frame (1). Is relatively easy to take and stable operation is possible.

Block diagram of a control mechanism according to the present invention Top view of the combine Combine side view Action diagram of adjusting the cutting side mounting position of the cutting balance spring device Action diagram for adjusting the mounting position of the trimming balance spring device on the traveling frame side Side view of an embodiment equipped with a ground sensor on the traveling frame side Side sectional view showing an embodiment of an automatic mounting position changing device The side view of the Example which adjusts the traveling frame side attachment position of a cutting balance spring apparatus up and down The side view of the Example which adjusts the traveling frame side attachment position of a cutting balance spring apparatus back and forth.

  Embodiments of the present invention will be specifically described below with reference to the drawings.

  First, as shown in FIG. 2 and FIG. 3, the combine 6 is equipped with a pair of left and right crawlers 12, 12 constituting the traveling device 11, and a threshing device 13 is mounted on the traveling frame 1, and the threshing device 13 The cutting and conveying device 2 is arranged in front of the, and as described later, it is suspended so that the cutting height can be adjusted in the vertical direction. Then, as shown in FIG. 3, the traveling device 11 detects the inclination of the left and right crawlers 12, 12 (inclination in the left-right direction) and controls the crawlers 12, 12 up and down (reciprocal left and right). Is equipped with a rolling control device 14 that controls the difference between the two to prevent the sinking during the wet paddy field operation. In addition, since the rolling control apparatus 14 is already a well-known technique, detailed description is abbreviate | omitted.

  In FIG. 3, 15 is a rolling cylinder, 16 is a rolling arm, and 17 is a wheel that moves up and down.

  The threshing device 13 has a specific internal configuration not shown in the figure, but is arranged with the cereal supply port facing the reaping and conveying apparatus 2 at the front, and the cereal supply supplied from the front side is sandwiched between the feed chain 18 and the threshing device 13. It has a conventionally known configuration in which it is threshed and sorted while being sandwiched and transported by a ridge 19.

  Next, the cutting and conveying apparatus 2 will be specifically described.

  First, as shown in the drawing, the cutting frame 20 is composed of a post-cutting frame 21 and a pre-cutting frame 22 that is fixedly connected laterally to the front end portion thereof, and the post-cutting frame 21 is disposed at the front of the traveling frame 1. It is set as the structure which pivotally supported so that a front part could rotate up and down on a certain mowing suspension stand 23. As shown in FIG. In the case of the embodiment, the pre-cutting frame 22 is connected to the front end of the post-cutting frame 21 in the left-right lateral direction as a transmission case, and includes a transmission cylinder of the grain raising device 24 described later. 25 is connected.

  Thus, as shown in FIG. 2, the cutting frame 20 has a transmission device connected from the post-cutting frame 21 to the pre-cutting frame 22 and is configured in a T shape in plan view. In addition, each drive device that constitutes the cutting and conveying device 2 is configured to be capable of transmission.

  Then, as shown in FIGS. 2 and 3, the cutting and conveying device 2 arranges the weed pods 28 for each cutting line at the front low position, and causes a plurality of culm raising devices 24 to correspond to the back thereof. Is configured to be inclined upward at the rear. Further, as described above, the reaping and conveying apparatus 2 includes the reaping apparatus 26 at a low position, and the cereal conveying apparatus 30 that conveys the reaping cereal to the rear threshing apparatus 13 while facing the reaping apparatus 26. Is configured.

  As shown in FIGS. 3 to 5, the cutting and conveying apparatus 2 configured as described above includes a lifting cylinder 31 between a post-cutting frame 21 constituting the cutting frame 20 and the traveling frame 1 side. And a trimming balance spring device 3 are provided so as to be freely raised and lowered and held upward. In the case of the embodiment shown in the drawings, the elevating cylinder 31 adopts a hydraulic type and raises and lowers the cutting and conveying apparatus 2 from the lower cutting position to the upper storage position when not in operation. At the stop position of the unit, the downward movement is limited and supported, and the upper part is held by the tension pressure of the balance spring 8 of the reaping balance spring device 3, and within the tension range (the total weight and tension of the reaping transport device 2). It can be moved up in a balanced relationship with pressure).

  Next, a device that automatically adjusts the spring tension by changing the overall length of the balance spring 8 constituting the reaping balance spring device 3, that is, in the embodiment, either one of the attachment positions of the reaping balance spring device 3, The automatic attachment position changing device 35 that adjusts the position in the perspective direction with respect to the other will be described.

  First, as shown in FIGS. 7 to 9, the trimming balance spring device 3 is configured such that a rear cylindrical cover 37 is slidably fitted to a front cylindrical cover 36 so that the balance can be expanded and contracted. The spring 8 is housed. Then, as shown in the drawing, the cutting balance spring device 3 is configured such that both ends of the internal balance spring 8 are fixed to the cylindrical covers 36 and 37, respectively, and can be expanded and contracted integrally. , 37, and the external push and pull action changes the overall length of the spring so that the spring tension is adjusted.

  As described above, the cutting balance spring device 3 is provided between the traveling frame 1 and the post-cutting frame 21. In this case, as illustrated in FIG. The automatic changing device 35 is connected and attached. As shown in FIG. 7, the automatic attachment position changing device 35 includes a guide female screw ring 41 screwed into a lead helical shaft 40 connected to a control motor 39, and the guide female screw ring 41 is cylindrical. The structure is connected to the cover 37.

  As shown in FIG. 8, the automatic attachment position changing device 35 configured in this way is connected to the other of the cutting balance spring device 3 attached to the post-cutting frame 21 in a pivoted state and attached to the traveling frame 1. Is configured. In this case, in the embodiment, the helical position 40 for the lead of the automatic attachment position changing device 35 is provided vertically, and the attachment position on the traveling frame 1 side of the cutting balance spring device 3 is changed in the vertical direction so that the total length of the balance spring 8 is increased. It is set as the structure which changes long and short. Therefore, in the embodiment shown in FIG. 8, as shown in the operation diagram of FIG. 5, the total length of the balance spring 8 is shortened when the lead screw shaft 40 rotates forward and the guide female screw ring 41 reaches the upper part. When the spring tension becomes stronger and the position corresponds to the wet field, conversely, when the guide female screw ring 41 reaches the lower part due to the reverse rotation of the lead spiral shaft 40, the total length becomes longer and the tension becomes weaker, which is suitable for the dry field. It becomes the composition which becomes a state. In addition, the balance spring 8 can hold the intermediate position between the two at a standard spring tension.

  In the above-described embodiment, the configuration in which the automatic attachment position changing device 35 is provided on the traveling frame 1 side has been described. However, the automatic attachment position changing device 35 is provided on the post-cutting frame 21 side and the cutting balance spring device 3 is attached. Similarly, even when the position is changed up and down, the spring tension can be adjusted by changing the total length of the balance spring 8.

  In this case, the cutting balance spring device 3 can be changed to the upper, middle, and lower positions as shown in the operation diagram shown in FIG. Position and can be automatically adjusted to a spring tension suitable for each field operation.

  Then, as shown in FIG. 9, the automatic attachment position changing device 35 is installed horizontally on the traveling frame 1 side, and the lead screw shaft 40 is mounted in a state close to the horizontal, and the guide female screw ring 41 is moved back and forth. It can be configured to change the direction. With this configuration, the cutting balance spring device 3 automatically adjusts the mounting position on the traveling frame 1 side in the front-rear direction with respect to the mounting position on the post-cutting frame 21 side, and the balance spring 8. The spring tension can be adjusted automatically by changing the total length of the spring.

  In the case of this embodiment, the connecting rod 42 connecting the guide female thread ring 41 and the rear cylindrical cover 37 has a joint portion 43 that can be bent at the intermediate portion, and can smoothly move back and forth. Yes. 7 to 9, reference numeral 45 denotes a guide rod, which is provided along a parallel state to the lead spiral shaft 40, and supports and guides in parallel with the guide female screw ring 41 moving in the axial direction. It is configured.

  Next, specific examples of means for detecting or knowing the hardness of soil in the field will be described.

  First, as shown in FIG. 1, the controller 46 has a grounding sensor 4 (attached to either the cutting and conveying device 2 side or the traveling frame 1 side in the embodiment) on the input side, and a cutting height sensor 47. , A wetland mode changeover switch 48, a rolling sensor 49 for detecting the operation of the rolling control device 14, and a traveling load sensor 5 (in the embodiment, the axle is equipped with a tachometer) to detect detection information (grounding sensor) 4, traveling load sensor 5), operation information (cutting height sensor 47, wetland mode changeover switch 48), or operation information (rolling sensor 49) is input. Then, the controller 46 is provided with a control motor 39 constituting the attachment position automatic changing device 35 connected to the output side, and outputs a control signal calculated based on the information, and the lead helical shaft 40 already described. Is driven in the forward or reverse direction to change the attachment position of the harvesting balance spring device 3.

  Next, the control action of the embodiment will be specifically described. As shown in FIG. 4, the grounding sensor 4 is grounded and attached to the lower side of the weed support rod 29 or as shown in FIG. In addition, it is configured to be arranged in a rolling shape on the traveling frame 1 side, and either one of them detects the soil softness (dry field or wet field) and inputs the detected information to the controller 46. Then, the controller 46 calculates based on the detection information and outputs a control signal to the output side, and controls the control motor 39 to change the total length of the balance spring 8 of the cutting balance spring device 3 to automatically adjust the tension. To be adjusted.

  In this case, the controller 40 outputs a control signal to the control motor 39 so that the mounting position can be changed to the lower position shown in FIG. 4 and FIG. The shaft 40 is rotated to extend the entire length of the balance spring 8 and adjust the spring tension to the weak side. Then, in the case of wetland information, the controller 46 outputs the above-described reverse rotation control signal to the control motor 39 and performs control to shorten the overall length of the balance spring 8 and increase the tension.

  Next, in the case of the embodiment, the cutting height sensor 47 adjusts the height of the cutting device 26 while the operator enters the combine work while observing the subsidence degree of the traveling frame 1 due to soil hardness or the like in the field. When set, the setting operation information is detected and input to the controller 46. Then, the controller 46 calculates based on the information input from the cutting height sensor 47 and outputs a control signal to the control motor 39 connected to the output side. In this way, when the control motor 39 is started based on the control signal, the automatic attachment position changing device 35 drives the lead helical shaft 40 and moves the attachment position on one side of the cutting balance spring device 3 up and down. Or it moves back and forth, it changes to the perspective direction with respect to the attachment position on the other side, the full length of the balance spring 8 is changed, the tension | tensile_strength pressure is adjusted automatically, and it can match with the soil softness in a farm field.

  Next, in the combine operation, when moving to the wet field, the wet field mode changeover switch 48 is turned on to switch to the wet field mode in order to make the auxiliary device 7 equipped in the combine compatible with the wet field. Then, the controller 46 receives operation information from the wetland mode changeover switch 48, and a control signal corresponding to the wetland is output to the control motor 39 so that the tension of the balance spring 8 is automatically adjusted to a strong tension so as to correspond to the wetland. Will do.

  In the wet field, when the combine 6 performs the mowing and threshing operation by switching to the wet field mode, for example, in the turning operation at the time of traveling, the restricting action works so that a spin turn (rapid turn) not suitable for the wet field cannot be performed. It is in control.

  Next, the rolling sensor 49 detects the operation information of the crawlers 12 and 12 constituting the traveling device 11 and inputs them to the controller 46. In FIG. 3, the rolling cylinder 15 is at the most contracted position, that is, rolling. The position where the wheel 17 is most depressed through the arm 16 is determined to be a deep wetland.

  In this way, when the operation information is input from the rolling sensor 49, the controller 46 outputs a control signal to the control motor 39 as a result of calculation based on the operation information, thereby adjusting the tension of the balance spring 8 of the cutting balance spring device 3. Can be adjusted automatically.

  Next, the traveling load sensor 5 is configured to rotate the axle when traveling in a wet paddy field in a combine operation because the pad surface is mud and the traveling resistance is inevitably larger than that of the dry paddy, and a large traveling load is applied. The speed decreases and the detected load value increases. As described above, the controller 46 can determine the level of the wet field based on the detection information input from the traveling load sensor 5 and outputs a control signal to the output-side control motor 39 accordingly. Then, in the cutting balance spring device 3, the mounting position on one side is changed based on the control signal, the overall length of the balance spring 8 is adjusted to be short, and the spring tension is automatically adjusted to a strength suitable for wet field work. .

  In such a control operation, the controller 46 detects the detection information input from the ground sensor 4 or the traveling load sensor 5, or the setting operation information input from the cutting height sensor 47 or the wetland mode changeover switch 48, or rolling. Based on the operation information input from the sensor 49, the softness (dry field or wet field) of the field soil is determined. In this case, a reference value as a reference for determination is registered in the controller 46 in advance, and this reference value And a control signal is output.

  As described above, in the embodiment, by automatically adjusting the spring tension of the reaping balance spring device 3 to a strength adapted to the soil conditions of the field, the reaping and conveying device 2 is tensioned and held with a stable elastic force. However, there is almost no occurrence of abnormal vibration by proceeding on the ground surface standard, and the work can be performed in a stable state. In the embodiment, the cutting and conveying device 2 moves forward stably while following the field scene, so that the cutting height can be made uniform as well as the obstacles and the entry into the soil. Since it can be avoided beforehand by the elastic action, the front part of the cutting (such as a weed pod) is hardly damaged, and the operating force for cutting up and down can be greatly reduced.

DESCRIPTION OF SYMBOLS 1 Traveling frame 2 Mowing conveyance apparatus 3 Mowing balance spring apparatus 4 Grounding sensor 5 Traveling load sensor 6 Combine 7 Attachment apparatus 8 Balance spring

Claims (3)

  The harvesting balance spring device (3) is a harvesting floating device for a combine that supports a harvesting conveyance device (2) that is mounted on the front portion of the traveling frame (1) so as to be movable up and down by a harvesting balance spring device (3). Based on the detection information of the grounding sensor (4) or the traveling load sensor (5) for detecting the degree of soil softness in the field, the spring tension is set to the mounting position on the traveling frame (1) side, or the cutting and conveying device ( 2) A combination mechanism characterized in that either one of the mounting positions on the side is automatically adjusted in the perspective direction with respect to the other to adjust the balance spring (8) by changing the total length. Harvesting floating device.   The trimming balance spring device (3) has its spring tension at the mounting position on the traveling frame (1) side based on the detection information of the ground sensor (4) or the traveling load sensor (5), or the harvesting conveying device. (2) Any one of the mounting positions on the side is configured to automatically adjust the mounting position in the vertical direction with respect to the other mounting position to change and adjust the total length of the balance spring (8). The combine harvesting floating device according to claim 1.   The reaping balance spring device (3) determines the spring tension based on the detection information of the ground contact sensor (4) or the traveling load sensor (5), the attachment position on the traveling frame (1) side, 2. The harvesting floating of the combine according to claim 1, wherein the adjusting position is automatically adjusted in the front-rear direction with respect to the mounting position on the side 2 to change and adjust the total length of the balance spring (8). apparatus.

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