JP2005151848A - Farming implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farming implement easily mountable with a gas spring. <P>SOLUTION: This farming implement 1 includes a fixed frame part 4 joined to a tractor and a movable frame part 5 supporting a soil working means 2 and also the gas spring 41 interposed via a turning arm 40 in between the fixed frame part 4 and the movable frame part 5 and functioning to aid the movement of the movable frame part 5, wherein the gas spring 41 can be interposed in a free-length condition in between the fixed frame part 4 and the movable frame part 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an agricultural machine that performs soil work while moving by traveling of a traveling vehicle.

Conventionally, for example, a fixed frame portion coupled to a traveling vehicle, a movable movable frame portion provided on the fixed frame portion for supporting earth working means, and directly interposed between the fixed frame portion and the movable frame portion and movable. A gas spring that assists the movement of the frame, one end of the gas spring (the base end of the cylinder) is directly connected to the fixed frame, and the other end of the gas spring (the tip of the piston rod) is movable Agricultural working machines such as a haze coater directly connected to the frame portion are known (for example, see Patent Document 1).
JP 2002-165502 A

  However, in the conventional agricultural machine described above, when the gas spring is interposed between the fixed frame portion and the movable frame portion, the gas spring must be in a state of being contracted from the free length, so there is a possibility that it takes time to install the gas spring. is there.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can attach a gas spring easily.

  The farm work machine according to claim 1 is a farm work machine that performs soil work by earth work means while moving by traveling of the traveling vehicle, and is provided with a fixed frame portion coupled to the traveling vehicle, and the fixed frame portion. A movable movable frame portion that supports the earth working means, and a gas spring that is interposed between the fixed frame portion and the movable frame portion via a rotating body and assists the movement of the movable frame portion. The gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state.

  And since the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state, it is not necessary to make the gas spring contracted to be smaller than the free length at the time of insertion, and the gas spring can be easily attached. become.

  The farm work machine according to claim 2 is a farm work machine that performs soil work by earth work means while moving by traveling of the traveling vehicle, and is provided on the fixed frame portion coupled to the traveling vehicle, and the fixed frame portion. A forward work position where the earth work means performs earth work based on forward travel of the traveling vehicle, a reverse work position where the earth work means performs earth work based on backward travel of the traveling vehicle, and the earth work means. The movable frame is moved to a retracted non-working position located behind the traveling vehicle and supports the earth working means, and is interposed between the fixed frame and the movable frame through a rotating body, and is movable. A gas spring for assisting movement of the frame portion from the forward working position to the retracted non-working position and movement of the movable frame portion from the retracted working position to the retracted non-working position, wherein the gas spring is in a free length state. The fixed frame portion and the Those that are made possible interposed between Dowaku unit.

  And since the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state, it is not necessary to make the gas spring contracted to be smaller than the free length at the time of insertion, and the gas spring can be easily attached. In addition, it is possible to move the movable frame portion from the forward working position to the retracted non-working position and move the movable frame portion from the retracted working position to the retracted non-working position with a relatively small force with the aid of the gas spring. It becomes possible.

  The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the gas spring is a cylinder part, and a piston rod part inserted into the cylinder part so that the projecting length can be changed with respect to the cylinder part. And either one of the tip end portion of the piston rod portion and the base end portion of the cylinder portion is connected to the fixed frame portion via a rotating body.

  And since either the front-end | tip part of a piston rod part or the base end part of a cylinder part is connected with the fixed frame part via the rotation body, attachment of a gas spring becomes easy with a simple structure.

  The agricultural machine according to claim 4 is the agricultural machine according to claim 1 or 2, wherein the gas spring is inserted into the cylinder part and a piston rod part inserted into the cylinder part so that the projecting length can be changed with respect to the cylinder part. And either one of the tip end portion of the piston rod portion and the base end portion of the cylinder portion is connected to the movable frame portion via a rotating body.

  And since either the front-end | tip part of a piston rod part or the base end part of a cylinder part is connected with the movable frame part via the rotation body, attachment of a gas spring becomes easy with a simple structure.

  The agricultural machine according to claim 5 is an agricultural machine that performs earth work by earth work means while moving by traveling of the traveling vehicle, and is provided on the fixed frame part connected to the traveling vehicle, and the fixed frame part. A movable movable frame portion having a first rotating member and a second rotating member and supporting the earth working means, and a rotating body interposed between the first rotating member and the second rotating member. And a gas spring that assists the movement of the movable frame portion, and the gas spring can be interposed between the first rotating member and the second rotating member in a free length state. It is what.

  Since the gas spring can be interposed between the first rotating member and the second rotating member in a free length state, it is not necessary to make the gas spring contracted to a state shorter than the free length at the time of insertion. Is easy to install.

  The farm work machine according to claim 6 is a farm work machine that performs soil work by the soil work means while moving by traveling of the traveling vehicle, and is provided on the fixed frame portion connected to the traveling vehicle, and the fixed frame portion. A first working member and a second turning member, wherein the earth working means is a forward working position for carrying out earth work based on forward running of the traveling vehicle, and the earth working means is used for backward running of the traveling vehicle. A reversing work position for performing earth work and a soiling work means moving to a retracted non-working position located behind the traveling vehicle, a movable frame portion supporting the earth work means, the first rotating member, It is interposed between the second rotating members via a rotating body, and the movable frame portion moves from the forward working position to the retracted non-working position and the movable frame portion moves from the retracted working position to the retracted non-working position. A gas spring for assisting Ring is one that is capable interposed between the first rotating member and the second rotating member in the free length state.

  Since the gas spring can be interposed between the first rotating member and the second rotating member in a free length state, it is not necessary to make the gas spring contracted to a state shorter than the free length at the time of insertion. And with a relatively small force to move the movable frame from the forward working position to the retracted non-working position and to move the movable frame from the retracted working position to the retracted non-working position with the aid of the gas spring. Can be performed.

  According to the agricultural machine according to claim 1, since the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state, it is necessary to make the gas spring contracted to a state shorter than the free length during the insertion. The gas spring can be easily installed.

  According to the agricultural machine according to claim 2, since the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state, it is necessary to make the gas spring contracted to a state shorter than the free length at the time of insertion. The gas spring can be easily installed, and with the assistance of the gas spring, the movable frame is moved from the forward working position to the retracted non-working position, and the movable frame is moved from the retracted working position to the retracted non-working position. Can be performed with a relatively small force.

  According to the agricultural machine according to claim 3, since either one of the tip end portion of the piston rod portion and the base end portion of the cylinder portion is connected to the fixed frame portion via the rotating body, with a simple configuration, Gas spring can be easily installed.

  According to the agricultural machine according to claim 4, since either one of the tip end portion of the piston rod portion and the base end portion of the cylinder portion is connected to the movable frame portion via the rotating body, with a simple configuration, Gas spring can be easily installed.

  According to the agricultural machine according to claim 5, since the gas spring can be interposed between the first rotating member and the second rotating member in a free length state, the gas spring is contracted from the free length when the gas spring is interposed. There is no need to make it in a state, and the gas spring can be easily attached.

  According to the agricultural machine according to claim 6, since the gas spring can be interposed between the first rotating member and the second rotating member in a free length state, the gas spring is contracted from the free length when the gas spring is interposed. The gas spring can be easily mounted without the need for a state, and with the assistance of the gas spring, the movable frame is moved from the forward working position to the retracted non-working position and the movable frame is retracted from the retracted working position. The movement to the position can be performed with a relatively small force.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  In FIGS. 1 and 2, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is a towing type that is used by being connected to a tractor (not shown) that is a traveling vehicle.

  And the farm work machine 1 is a pad coater which performs the padding work (the paddy repair work) which is the earth work by the earth work means 2 on one side while moving the farm field in the traveling direction along the paddle by the traveling of the tractor. . The farm work machine 1 is capable of a return work (reverse work) in which the tractor can be recharged even at the end of the farm field by reversing the tractor in a state where the soil work means 2 is reversed forward and backward.

  The agricultural work machine 1 includes a fixed frame portion 4 connected to a three-point link portion (worker lifting support device) of a tractor (not shown), and a soil working means 2 that is movably provided on the fixed frame portion 4 so that the tractor travels forward. The forward working position for performing the smearing work based on the above, the retreat working position for the soil working means 2 based on the backward travel of the tractor, and the retracted non-working position for the soil working means 2 located behind the tractor. A movable frame portion 5 that supports the earth work means 2 and a fixing means 6 for fixing the movable frame portion 5 to each position are provided.

  The fixed frame portion 4 has a three-point connecting portion (traveling vehicle connecting portion) composed of a top mast having a top pin at the tip portion and left and right lower arms having a lower pin at the tip portion. Is connected to the three-point link portion of the tractor.

  Moreover, the fixed frame part 4 has bearing parts, such as a gear box, and the input shaft of the front-back direction is rotatably provided in this bearing part. The PTO shaft of the tractor is connected to the input shaft through a universal joint and a transmission shaft.

  Further, the fixed frame portion 4 has a connected portion 7 constituted by, for example, a fixed U-shaped frame, and a stopper portion 8 constituted by, for example, a vertical pin at the end of the connected portion 7. Is provided.

  The movable frame portion 5 includes a first rotating arm body 11 and a second rotating arm body 12 having different lengths, and a movable frame body 13.

  One end of the first rotating arm body 11 is connected to the fixed frame portion 4 so as to be rotatable about a vertical axis 15, and the other end of the first rotating arm body 11 is connected to the movable frame body 13 in the vertical direction. The shaft 16 is connected to be rotatable. Similarly, one end portion of the second rotating arm body 12 is connected to the fixed frame portion 4 so as to be rotatable about a vertical axis 17, and the other end portion of the second rotating arm body 12 is connected to the movable frame body 13. Are connected so as to be rotatable about a vertical axis 18. Note that a connected portion 20 is integrally formed to project from the middle portion in the longitudinal direction of the second rotating arm body 12.

  The movable frame body 13 of the movable frame portion 5 is rotatably provided with a rotary 21 that is a banking means for plowing and raising soil while driving and rotating in a predetermined direction. The rotary 21 has a rotary shaft that receives power from the input shaft via a power transmission means and rotates in a predetermined direction, and a plurality of rotary claws 22 that protrude radially from the outer peripheral surface side of the rotary shaft. Yes. The rotary 21 is covered with a rotary cover portion 23 of the movable frame body 13 so that soil does not scatter upward or forward during work, which is when the rotary claw 22 is rotating.

  Further, the movable frame body 13 of the movable frame portion 5 has a substantially cylindrical ridge forming means for compacting the soil raised by the rotary 21 ahead in the traveling direction while driving and rotating in a predetermined direction to form a new ridge. A glazed body (disc) 26 is rotatably provided. The glazed body 26 has a substantially frustoconical shape that receives the power from the input shaft through the power transmission means and is driven to rotate in a predetermined direction, and a substantially frustoconical shape that is attached to the rotating shaft and forms an inclined glazed side surface. It has a heel side surface forming member 27 and a substantially cylindrical heel surface forming member 28 that is attached to the rotating shaft and forms a horizontal surface of the heel surface.

  Further, the movable frame body 13 of the movable frame portion 5 is rotatably provided with a pretreatment rotary 30 that pretreats the upper surface of the saddle surface at a position ahead of the rotary 21 in the traveling direction. The pretreatment rotary 30, the embankment rotary 21, and the hammered body 26 constitute a soil working means 2 for performing a sanding work as a soil work.

  In addition, the movable frame body 13 of the movable frame portion 5 has a soil on the lateral side of the rotary 21, that is, for example, on the right side of the rotary 21 in the traveling direction while following the upper surface of the ridge before repair. A substantially plate-like side cover 31 that prevents scattering is provided via a support link 32.

  On the other hand, the agricultural machine 1 is interposed between the fixed frame portion 4 and the movable frame portion 5 via a rotating arm 40 that is a slightly long rotating body, and is lifted by the three-point link portion of the tractor. The movable frame portion 5 is moved from the forward working position to the retracted non-working position (moving obliquely upward) and gradually moved from the backward working position of the movable frame portion 5 while being gradually extended so that the movable frame portion 5 can be moved and operated with a relatively small force. A gas spring 41 that can be expanded and contracted is provided to assist movement to the storage non-working position (moving obliquely upward).

  The gas spring 41 can be interposed between the fixed frame portion 4 and the movable frame portion 5 via a rotating arm 40 in a free length (maximum length) state, that is, for example, can be attached / detached with a free length. Yes.

  In addition to the movement assist function, the gas spring 41 is moved rapidly by the weight of the movable frame 5 and the weight of the soil working means 2 when the movable frame 5 is lifted by the three-point link portion of the tractor. The moving speed of the movable frame portion 5 from the retracted non-working position to the forward working position and the moving speed of the movable frame portion 5 from the retracted non-working position to the backward working position are gradually reduced so as not to move (obliquely downward). The function of reducing speed (damper function) is also demonstrated.

  Here, as shown in FIGS. 3 and 4, the gas spring 41 includes a cylinder portion 42 having a substantially cylindrical shape filled with a high-pressure gas such as nitrogen gas, and the cylinder portion 42 in the cylinder portion 42. The piston rod portion 43 is inserted into the cylinder 42 so that the protruding length can be changed and protrudes from the tip portion of the cylinder portion 42.

  The distal end portion of the piston rod portion 43 of the gas spring 41 is connected to the connected portion 7 of the fixed frame portion 4 through one rotating arm 40.

  In other words, the substantially U-shaped frame-shaped tip of the piston rod 43 has one end at the end opposite to the stopper 8 side of the connected portion 7 of the fixed frame 4 around the vertical axis 44. The other end of the pivot arm 40 that is pivotably coupled is pivotally connected about a vertical axis 45.

  The pivot arm 40 is pivotable with respect to the fixed frame portion 4 and is pivotable with respect to the gas spring 41. A connecting plate 48 that connects the parts, and a part of the front surface of the connecting plate 48 is a contact surface 49 that contacts the stopper portion 8 of the fixed frame portion 4.

  As is apparent from FIG. 2, the contact surface 49 of the rotating arm 40 has a free length when the movable frame portion 5 is positioned at the forward operation position and when the movable frame portion 5 is positioned at the backward operation position. Is in contact with the stopper portion 8 based on the elastic restoring force (biasing force) of the gas spring 41 in a slightly contracted state compared to the above, and the movable frame portion 5 is positioned away from the stopper portion 8 in the state where the movable frame portion 5 is positioned at the non-storage position. The gas spring 41 is in a free length state in a state where the movable frame portion 5 is located at the retracted non-working position. The substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 20 of the movable frame portion 5 so as to be rotatable about a vertical axis 50.

  Next, the operation and the like of the farm work machine 1 will be described.

  When the earth work means 2 performs the wiping work by the forward traveling of the tractor, as shown in FIG. 1, the movable frame portion 5 that supports the earth work means 2 is moved and fixed to the forward work position, and the earth work means 2 The pre-processing rotary 30, the embankment rotary 21 and the padding 26 are set in a desired forward working state, and the side cover 31 is grounded by its own weight on the top surface of the paddle.

  Then, when the tractor is moved forward, the farm work machine 1 moves forward in the traveling direction, and the power from the tractor side is transmitted to the soil work means 2 through the input shaft and the power transmission means.

  When the power from the tractor side is transmitted to the earth working means 2, each of the pretreatment rotary 30, the embankment rotary 21 and the padding body 26 is driven to rotate in a predetermined direction. Then, the upper surface of the paddle is pretreated by the pretreatment rotary 30, the paddy soil is cultivated by the rotary 21 and raised to the paddle, and the soil raised on the paddle is compacted by the padding body 26. A strong Xinjiang is formed.

  Then, at the end portion of the farm field, the movable frame portion 5 that supports the earth working means 2 is moved to the reverse operation position and fixed so as not to be left behind, and the return operation is performed.

  When performing this return work, the operator lifts the entire agricultural work machine 1 to a predetermined height at the three-point link part of the tractor, and then moves the movable frame part 5 together with the earth work means 2 to the retreat work position by manual operation. .

  At this time, when the movable frame portion 5 moves from the forward working position to the retracted non-working position, the gas spring 41 assists the movement of the movable frame portion 5 from the forward working position to the retracted non-working position by its elastic restoring force. Therefore, the operator can easily move the movable frame portion 5 with a relatively small force. When the movable frame portion 5 is moved from the retracted non-working position to the retracted working position, the gas spring 41 is moved to the movable frame portion 5. Since the moving speed from the storage non-working position to the reverse working position is reduced, the movable frame portion 5 does not suddenly move down due to its own weight, which is safe for the operator.

  Note that the gas spring 41 exhibits a function of assisting movement and a function of reducing the speed even when the movable frame portion 5 is returned to the forward working position after the return work.

  According to the agricultural machine 1, the gas spring 41 can be interposed between the fixed frame portion 4 and the movable frame portion 5 via the rotating arm 40 in a free length state. There is no need to use a compression jig or the like to reduce the length of the gas spring 41, the gas spring 41 can be easily and properly attached, and the gas spring 41 can be easily removed in the free length state. With the assistance of the gas spring 41, the upward movement operation of the movable frame portion 5 to the storage non-working position can be easily performed with a relatively small force.

  The farm work machine 1 has been described with respect to the configuration in which the tip end portion of the piston rod portion 43 is connected to the connected portion 7 of the fixed frame portion 4 via the rotating arm 40. You may make it connect a base end part to the to-be-connected part 7 of the fixed frame part 4 via the rotation arm 40. FIG.

  Further, as shown in FIGS. 5 to 7, for example, the agricultural working machine 1 is configured so that the distal end portion of the piston rod portion 43 of the gas spring 41 is slightly longer than the connected portion 20 of the second rotating arm body 12 of the movable frame portion 5. It may be configured to be connected via a rotating arm 40 which is a circular rotating body.

  The rotating arm 40 of the agricultural machine 1 shown in FIGS. 5 to 7 can rotate with respect to the movable frame portion 5 and can slide with respect to the gas spring 41 along the longitudinal direction of the gas spring 41. It is.

  The rotating arm 40 is connected to the connected portion 20 of the second rotating arm body 12 of the movable frame portion 5 so as to be rotatable around a shaft 51 in the vertical direction. The rotating arm 40 is connected to the piston rod. The distal end portion of the portion 43 is connected to be slidable (movable) along the longitudinal direction of the rotating arm 40. A long hole portion 52 and a guide portion 53 are formed in the rotating arm 40 along the longitudinal direction of the rotating arm 40.

  The piston rod portion 43 of the agricultural machine 1 shown in FIGS. 5 to 7 includes a rod member 56 and a spacer member that is attached to the tip of the rod member 56 and slides along the guide portion 53 with respect to the rotating arm 40. (Sliding member) 57, a first pin 58 that is fixed to pass through both spacer member 57 and rod member 56, and a second pin 59 that is fixed to pass through only spacer member 57. A retaining ring 60 such as an E-ring is fixed to each tip of the first pin 58 and the second pin 59.

  As is apparent from FIG. 5, the second pin 59 is slightly larger than the free length when the movable frame portion 5 is located at the forward working position and when the movable frame portion 5 is located at the backward working position. Based on the elastic restoring force (biasing force) of the gas spring 41 in the contracted state, the gas spring 41 comes into contact with one end of the elongated hole 52 of the rotating arm 40. On the other hand, the first pin 58 is located in the vicinity of the other end of the long hole portion 52 of the rotating arm 40 when the movable frame portion 5 is located at the retracted non-working position. The gas spring 41 is in a free length state when it is positioned at the position.

  Further, the substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 7 of the fixed frame portion 4 so as to be rotatable about a vertical axis 61.

  5 to 7 as in the agricultural machine 1 shown in FIG. 1 and the like, the gas spring 41 is rotated between the fixed frame part 4 and the movable frame part 5 in a free length state. Since it can be installed via the arm 40, unlike the conventional case, it is not necessary to make the gas spring 41 smaller than the free length by using a compression jig, etc., and the gas spring 41 can be easily and properly attached. The gas spring 41 can be easily removed in a free length state, and with the assistance of the gas spring 41, the upward movement of the movable frame portion 5 to the retracted non-working position can be easily performed with a relatively small force. .

  In addition, although this agricultural working machine 1 demonstrated the structure which connected the front-end | tip part of the piston rod part 43 to the to-be-connected part 20 of the movable frame part 5 via the rotation arm 40, for example, although not shown in figure, the cylinder part 42 These base end portions may be connected to the connected portion 20 of the movable frame portion 5 via the rotating arm 40.

  Further, the agricultural machine 1 is not limited to the configuration in which the gas spring 41 is interposed between the fixed frame portion 4 and the movable frame portion 5 via the rotating arm 40. For example, as shown in FIG. The movable frame portion 5 has a second rotating arm body (first rotating member) 12 and a movable frame body (second rotating member) 13 interposed via a rotating arm (rotating body) 40. It is good.

  In the agricultural machine 1 shown in FIG. 8, the coupled portion 7 is formed not at the fixed frame portion 4 but at the intermediate portion in the longitudinal direction of the second rotating arm body 12. The coupled portion 20 is formed integrally with the end portion of the movable frame body 13 instead of the second rotating arm body 12.

  The distal end portion of the piston rod portion 43 of the gas spring 41 is connected to the connected portion 7 of the second rotating arm body 12 via one rotating arm 40. In other words, the substantially U-shaped frame-shaped tip portion of the piston rod portion 43 is connected to one end portion of the connected portion 7 opposite to the stopper portion 8 side so as to be rotatable about the vertical axis 44. The other end of the rotating arm 40 is connected to be pivotable about a vertical shaft 45. The turning arm 40 is turnable with respect to the second turning arm body 12 and is turnable with respect to the gas spring 41. And a front part of the connecting plate 48 is a contact surface 49 that comes into contact with the stopper 8 of the second rotating arm body 12.

  As is apparent from FIG. 8, the contact surface 49 of the rotating arm 40 has a free length when the movable frame portion 5 is located at the forward operation position and when the movable frame portion 5 is located at the backward operation position. Is in contact with the stopper portion 8 based on the elastic restoring force (biasing force) of the gas spring 41 in a slightly contracted state compared to the above, and the movable frame portion 5 is positioned away from the stopper portion 8 in the state where the movable frame portion 5 is positioned at the non-storage position. The gas spring 41 is in a free length state in a state where the movable frame portion 5 is located at the retracted non-working position. The substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 20 of the movable frame body 13 that supports the earth working means 2 so as to be rotatable about the vertical axis 50. Yes.

  In the agricultural machine 1 shown in FIG. 8 as well, as in the agricultural machine 1 shown in FIG. 1 and the like, the gas spring 41 is rotated between the second rotating arm body 12 and the movable frame body 13 in a free length state. Since it can be installed via the arm 40, unlike the conventional case, it is not necessary to make the gas spring 41 smaller than the free length by using a compression jig, etc., and the gas spring 41 can be easily and properly attached. The gas spring 41 can be easily removed in a free length state, and with the assistance of the gas spring 41, the upward movement of the movable frame portion 5 to the retracted non-working position can be easily performed with a relatively small force. .

  In addition, although this agricultural working machine 1 demonstrated the structure which connected the front-end | tip part of the piston rod part 43 to the to-be-connected part 7 of the 2nd rotation arm body 12 via the rotation arm 40, for example, although not shown in figure, You may make it connect the base end part of the cylinder part 42 to the to-be-connected part 7 of the 2nd rotation arm body 12 via the rotation arm 40. FIG.

  Further, the farm work machine 1 is not limited to the configuration including only one gas spring 41, and for example, as shown in FIG. 9, between the fixed frame portion 4 and the movable frame portion 5 (or the first frame) in a free length state. A configuration may be provided in which a plurality of, for example, two gas springs 41, which can be interposed between the one rotation member 12 and the second rotation member 13) via the rotation arm 40 and are positioned in parallel to each other, may be used.

  Further, the farm work machine 1 may be one that cannot perform return work, or may be one that can offset the soil working means 2 in the left-right direction.

  Further, the farm work machine 1 is not limited to the manual switching type configuration in which the movable frame portion 5 is moved by manual operation. For example, the agricultural working machine 1 is an automatic switching type that includes a driving unit that outputs a driving force to move the movable frame portion 5. It is good also as a structure.

It is a top view which shows one Embodiment of the agricultural machine of this invention. It is a partial top view of an agricultural working machine same as the above. It is a top view of the gas spring part of an agricultural working machine same as the above. It is a side view of the gas spring part of an agricultural working machine same as the above. It is a fragmentary top view which shows other embodiment of the agricultural machine of this invention. It is a top view of the connection part of the gas spring of an agricultural working machine same as the above. It is sectional drawing of the connection part of the gas spring of an agricultural working machine same as the above. It is a fragmentary top view which shows other embodiment of the agricultural working machine of this invention. It is a partial side view which shows other embodiment of the agricultural working machine of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farm machine 2 Soil working means 4 Fixed frame part 5 Movable frame part
12 2nd rotation arm body which is the 1st rotation member
13 Movable frame body as second rotating member
40 Rotating arm which is a rotating body
41 Gas spring
42 Cylinder
43 Piston rod

Claims (6)

An agricultural machine that performs soil work with soil work means while moving by traveling of a traveling vehicle,
A fixed frame portion connected to the traveling vehicle;
A movable movable frame provided on the fixed frame and supporting the earth working means;
A gas spring interposed between the fixed frame portion and the movable frame portion via a rotating body, and assisting the movement of the movable frame portion,
The agricultural machine according to claim 1, wherein the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state. An agricultural machine that performs soil work with soil work means while moving by traveling of a traveling vehicle,
A fixed frame portion connected to the traveling vehicle;
A forward work position provided on the fixed frame, wherein the earth work means performs earth work based on forward travel of the traveling vehicle, and the reverse work in which the earth work means performs earth work based on the backward travel of the traveling vehicle. A movable frame portion that moves to a retracted non-work position where the position and the earth work means are located behind the traveling vehicle, and supports the earth work means;
A rotating body is interposed between the fixed frame portion and the movable frame portion, and the movable frame portion is moved from the forward working position to the retracted non-working position and the movable frame portion is retracted from the retracted working position to the retracted non-working position. With a gas spring to assist the movement to
The agricultural machine according to claim 1, wherein the gas spring can be interposed between the fixed frame portion and the movable frame portion in a free length state. The gas spring has a cylinder part and a piston rod part inserted into the cylinder part so that the projecting length can be changed with respect to the cylinder part.
Either the front-end | tip part of the said piston rod part, or the base end part of the said cylinder part is connected with the fixed frame part via the rotation body. The agricultural work machine of Claim 1 or 2 characterized by the above-mentioned. The gas spring has a cylinder part and a piston rod part inserted into the cylinder part so that the projecting length can be changed with respect to the cylinder part.
Either the front-end | tip part of the said piston rod part, or the base end part of the said cylinder part is connected with the movable frame part via the rotation body. The agricultural work machine of Claim 1 or 2 characterized by the above-mentioned. An agricultural machine that performs soil work with soil work means while moving by traveling of a traveling vehicle,
A fixed frame portion connected to the traveling vehicle;
A movable movable frame provided on the fixed frame, having a first rotating member and a second rotating member, and supporting the earth working means;
A gas spring interposed between the first rotating member and the second rotating member via a rotating body, and assisting the movement of the movable frame portion;
The agricultural work machine, wherein the gas spring can be interposed between the first rotating member and the second rotating member in a free length state. An agricultural machine that performs soil work with soil work means while moving by traveling of a traveling vehicle,
A fixed frame portion connected to the traveling vehicle;
A forward working position provided on the fixed frame portion, having a first rotating member and a second rotating member, wherein the earth working means performs earth work based on forward running of the traveling vehicle, and the earth working means A reversing work position for carrying out earth work based on reverse running of the traveling vehicle and a movable frame portion for supporting the earth working means, wherein the earth working means moves to a retracted non-working position located behind the traveling vehicle;
Between the first rotating member and the second rotating member via a rotating body, the movable frame portion is moved from the forward working position to the retracted non-working position and the movable frame portion is moved from the backward working position. A gas spring for assisting the movement to the retracted non-working position,
The agricultural work machine, wherein the gas spring can be interposed between the first rotating member and the second rotating member in a free length state.

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