JP2011024540A - Rotary working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary working machine that eliminates tilling unevenness and forms flat tilled soil. <P>SOLUTION: In the rotary working machine 50 that includes a plurality of rotary tines (tilling tines) 45 for tilling soil, a tine shaft 45a furnished with the rotary tines 45 projecting on the outer circumference, and a rotary cover (tilling cover) 46 for suppressing scattering of tilled soil, connected to the rear of a tractor (self-propelled working machine), and driven by drive force from the tractor, a guide plate (guiding portion) 58 for guiding tilled soil onto a track T of the tractor is formed projectingly at the rear part of the rotary cover 46. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention comprises a plurality of tilling claws for tilling soil, a claw shaft provided with projecting claws protruding from the outer periphery, and a tilling cover for suppressing scattering of the tilled soil, and a self-propelled working machine The present invention relates to a rotary work machine that is used by being connected to the rear part.

  There was uneven tillage as one of the problems when the tractor pulled the rotary work machine and performed tillage work in the field. For example, if the load on tilling claws increases due to uneven soil quality (hardness, moisture content, etc.) that occurs in the same field during tillage work, the rotary working machine is raised as appropriate to reduce the tillage depth. The increase in load on the tilling nail (ie, increase in load on the engine) has been avoided. However, such a coping method has a problem that the tillage depth becomes uneven and uneven tillage occurs.

  On the other hand, Patent Document 1 is provided with a load control mechanism for rotating the tillage cover of the rotary working machine back and forth in accordance with the soil quality, so that the load on the engine is constant and the tillage depth is constant. A technique for simultaneously solving the problems is disclosed.

Japanese Patent Laid-Open No. 08-228508

However, such a technique is a measure focusing on the unevenness of the soil quality in the field, and has not yet flattened the unevenness of the ground formed by the tractor's fence. The plow formed by the tractor traveling in the field during the plowing work is (1) the ground is stiffened by the heavy weight of the tractor tire, and (2) compared to other parts. There are two problems as cultivated land that the ground is greatly depressed. In particular, Patent Document 1 does not present a solution to the latter problem.
Then, the objective of this invention is to provide the rotary working machine which eliminates tilling nonuniformity and forms a flat cultivation land.

For this reason, the invention according to claim 1 includes a plurality of tilling claws for cultivating soil, a claw shaft provided by projecting the tilling claw to the outer periphery, and falling forward of the claw shaft while suppressing scattering of the cultivated soil. A rotary working machine that is connected to the rear part of a self-propelled working machine,
A guiding portion for guiding the tilled soil to the cage of the self-propelled working machine is formed so as to protrude from the rear surface of the tillage cover.

  According to a second aspect of the present invention, in the rotary working machine according to the first aspect, the guide portion is formed in a fin shape and provided on both sides of the tillage cover.

  According to a third aspect of the present invention, in the rotary work machine according to the first aspect, the direction of the guide portion can be changed.

  According to a fourth aspect of the present invention, in the rotary working machine according to the first aspect, the guide portion is movable in parallel.

  According to the first aspect of the present invention, a plurality of tilling claws for cultivating soil, a claw shaft provided with projecting claws projecting to the outer periphery, and scattering of the cultivated soil to drop forward in the claw shaft. In a rotary working machine that is connected to the rear part of a self-propelled working machine, a guide part for guiding the tilled soil to the self-propelled working machine's hook is projected on the back of the tilling cover. Therefore, it is possible to appropriately fill the pits of the self-propelled working machine with a simple configuration. Therefore, it is possible to provide a rotary working machine that eliminates tillage unevenness (irregularities on the cultivation surface) caused by the depression of the straw that has been a problem until now and forms a flat cultivation area.

  According to the invention of claim 2, since the guiding portion is formed in a fin shape and provided on both sides of the tillage cover, the tilling soil can be more appropriately guided to the cage of the self-propelled working machine, Furthermore, it is possible to provide a rotary working machine that forms a flat cultivated land.

  According to invention of Claim 3, since the direction of a guidance | induction part is changeable, according to the formation condition of a cocoon, the induction | guidance | derivation direction of cultivation soil can be changed suitably, and cultivation of the cultivation land resulting from the depression of a cocoon It is possible to provide a rotary working machine that eliminates unevenness more appropriately and forms a flat cultivated land. In addition, if the width of the front and rear wheels of the self-propelled work machine is different, it can be set to guide the cultivated soil widely so that it can be embanked on both sides, forming a flat cultivated land It can contribute even more.

  According to the fourth aspect of the present invention, since the guide portion can be moved in parallel, even if the width of the wheel of the self-propelled working machine is different depending on the vehicle type, it is possible to cope with the self-propelled working machine having various wheel widths. A rotary work machine can be provided.

It is a schematic side view of the tractor as a self-propelled working machine which attaches the rotary working machine of this invention. It is a schematic side view of the rotary working machine of this invention. (A) is a principal part schematic plan view of the rotary working machine of this invention, (b) is a principal part schematic side view of (a). (A) is a principal part schematic top view of another example of the rotary working machine of this invention, (b) is a principal part schematic side view of (a), (c) is a B arrow plan view of (b). It is. (A) is a principal part schematic plan view of another example of the rotary working machine of this invention, (b) is a principal part schematic side view of (a). (A) is a principal part schematic plan view of another example of the rotary working machine of this invention, (b) is a principal part schematic side view of (a), (c) is a side view of the arrow A in (b). FIG.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 shows a side view of a tractor (self-propelled working machine) 21 as an agricultural machine of the present invention and a rotary working machine connected to the rear part thereof. The tractor 21 includes two front wheels 23 and two rear wheels 24 on the front and rear sides of the body frame 22, a bonnet 25 is formed above the front wheels 23, and an engine as a prime mover portion is provided inside thereof. And the operation box 26 is provided in the rear part of the bonnet 25 continuously.

  In the driving box 26, an operation key 28 such as an engine key, an accelerator pedal, a clutch pedal, and a brake pedal, a shift lever, a handle 29, a driver's seat 30, and a display unit (not shown) for displaying speed, fuel, alarm, and the like. ) Etc. The outer periphery of the operation box 26 is made of glass so that the windshield, rear glass, door 31 and the like are improved in visibility. In addition, an antenna 32 that receives a radio broadcast or the like is attached to the left front portion of the operation box 26, and rear confirmation mirrors 33 are provided on both front portions of the operation box 26.

On the bonnet 25 in front of the operation box 26, a pipe-like exhaust port 27 for guiding engine exhaust is provided in the vertical direction. Further, a step 34 for the driver to move up and down to the driving box 26 is fixedly attached to the vehicle body frame 22 at the lower left of the driving box 26.
A fender 36 is provided below the rear portion of the operation box 26 so as to cover the vicinity of the rear upper half of the rear wheel 24, and a reflection plate 37 is attached to the rear end of the fender 36. The fender 36 is fixed to the main body frame 22.

Further, a top link 39, a pair of left and right lower links 40, and a PTO shaft 41 are extended at the rear part of the tractor 21. A three-point link type auto hitch may be attached to the tips of the top link 39 and the pair of left and right lower links 40.
Then, the rotary working machine 50 is attached to the tractor 21 via the top link 39 and the lower link 40, and the PTO shaft 41 is attached to the input shaft of the rotary working machine 50.

  FIG. 2 shows a schematic side view of the rotary working machine 50. The rotary working machine 50 includes a main beam 43 for transmitting power, a chain case 44 provided at the left end of the main beam 43, a gear box (not shown) provided at the center of the main beam 43, and a V-shaped upper fixed to the gear box. Arm 54, depth beam 56 rotatably attached to main beam 43 on both sides of the gear box, a plurality of rotary claws (cultivation claws) 45 projecting around claw shaft 45a, and a plurality of rotary claws 45 A rotary cover (cultivation cover) 46 and the like are provided to prevent scattering of soil cultivated by covering from above. A plurality of fin-shaped guide portions 58 are provided on the inner side of the front surface portion of the rotary cover 46 (described later).

  A handle 49 for rotating the rotary cover 46 back and forth is attached to the rotary cover 46. The rotary cover 46 is configured to be rotatable forward and backward with respect to the traveling direction about the claw shaft 45a by rotating the handle 49. The rotation of the rotary cover 46 is adjusted according to the tilling depth (plowing depth). Further, a rear cover 47 is rotatably connected to the rear end of the rotary cover 46 via a rotating portion 48.

  A lower end of the hanger rod 51 is rotatably attached to the lower portion of the rear cover 47 by a pin. On the other hand, on the rear part of the rotary cover 46, rod stays 52 are provided on both the left and right sides so as to be obliquely upward, and the upper part of the hanger rod 51 is rotatable around the rotation shaft 53 at the upper end of the rod stay 52. In addition, the hanger rod 51 is supported slidably in the length direction. A coil spring (not shown) is wound around the outer circumference of the hanger rod 51 to urge the rear cover 47 downward (clockwise in the figure).

  The top link 39 of the tractor 21 is attached to one end of the upper arm 54, and an adjustment screw 55 is attached to the other end of the upper arm 54. The adjustment screw 55 can adjust the vertical inclination angle of the depth beam 56 by operating an adjustment handle 57. A side cover may be attached to the rear portion of the rotary cover 46, and a side under cover may be attached to the lower portion of the rear cover 47.

  The PTO shaft 41 of the tractor 21 is connected to the gear box of the rotary working machine 50 via the universal joint 42, and the driving force of the tractor 21 is transmitted to the rotary working machine 50. In this gear box, the driving force of the PTO shaft 41 is transmitted to the shaft in the main beam 43. The end of the shaft is disposed in the chain case 44, and a gear is fixed to the end of the shaft. In the chain case 44, another gear fixed to the end of the claw shaft 45a is also provided. By driving an endless chain around the two gears, the driving force is transmitted from the shaft in the main beam 43 to the claw shaft 45a.

  FIGS. 3A and 3B show the configuration of the guide plate (guidance part) 58. The guide plate 58 is at a position spaced equidistant from the center line CL in the width direction of the rotary cover 46 on both the left and right sides, and obliquely so as to guide the cultivation soil toward the center line ML of the heel T of the tractor 21. Provided. The guide plate 58 is a rectangular iron plate, and is fixed to the back surface of the rotary cover 46 by welding or the like. In this example, two are provided outside the center line ML and three are provided inside the center line ML. The guide plate 58 is for guiding a part of the tilled soil that has been wound up by the rotary pawl 45 and reaches the front portion of the rotary cover 46 to the heel T of the tractor 21 (in the direction of the arrow).

  Next, the operation of plowing the farm field with the rotary work machine 50 configured as described above will be described. The rotational power of the tractor 21 is transmitted from the PTO shaft 41 to the rotary work machine 50 side. Then, the direction is changed by the gear box and transmitted to the shaft in the main beam 43. Then, in the chain case 44 in which one end of the shaft is stored, the shaft is transmitted to the claw shaft 45a through a gear and a chain (not shown). Thereby, the rotary claw 45 rotates in the P direction.

  When the predetermined working depth is set and the rotary working machine 50 is grounded, the rotary claws 45 plow the ground. Most of the cultivated soil falls to the rear of the rotary cover 46, but a part of the soil is wound up in the rotation direction P and conveyed to the front of the rotary cover 46. A part of the cultivated soil is guided to the guide plate 58 and guided along the inner surface of the rotary cover 46 in the direction of the center line ML of the cocoon T. Then, it is discharged from the rotary cover 46 in the R direction and falls onto the trough T. The cultivated soil that has fallen on the ridge T fills the depression of the ridge T with the fill F. Then, the cultivated soil is flattened by the rear cover 47 provided continuously in the width direction of the rotary working machine 50 to form a flat cultivated land without unevenness.

  By the way, as shown to Fig.4 (a)-(c), you may comprise a guidance | induction part so that rotation is possible centering on the pin 159. FIG. In this example, guide devices (guide portions) 160a to 160e are provided in the guide device 158. The guide device 158 includes guide plates 160a to 160e, a pin 159 inserted in the center in the thickness direction of the guide plates 160a to 160e, another pin 162 attached to the tip of the guide plates 160a to 160e, and a plurality of guide plates 160a to 160e. And a handle 165 for rotating the guide plates 160a to 160e.

  The guide plates 160a to 160e are formed of rectangular flat plates having a certain thickness. The pin 159 is provided with a through hole in the width direction at the center of the side surface of the guide plates 160a to 160e, and the pin 159 is inserted into the through hole. One end of the pin 159 is further inserted into a through hole provided in the rotary cover 46. Then, both ends of the pin 159 are crushed to prevent the pin 159 from being removed, and the guide plates 160 a to 160 e are attached to the rotary cover 46. In addition, one pin 162 is provided at the tip of each of the guide plates 160a to 160e. And the front-end | tip of the guide plate 160a and the front-end | tip of the guide plate 160b are connected with the connecting rod 161 via the pin 162. FIG. Further, the tips of the three guide plates 160c to 160e are connected by another connecting rod 161 via the pin 162. On the other hand, the guide plate 160c is also provided with a pin 162 at its rear end, and the front end of the guide plate 160b and the rear end of the guide plate 160c are connected by a further connecting rod 161 via the pin 162. All the connecting rods 161 are formed in a flat plate shape and are attached to the pins 162 so as to be rotatable.

  Then, the handle 165 is fixed to the pin 159 that is the rotation center of the guide plate 160a. The handle 165 includes a bar 163 and a knob 164. The bar 163 is made of an L-shaped member. One end of the bar 163 is fixed to the pin 159 that is the rotation center of the guide plate 160a, and the knob 164 is rotatably fitted to the other end. Therefore, the pin 159, the guide plate 160a, and the handle 165 move together. The guide plates 160b to 160e are rotatably provided with respect to the pin 159, the guide plate 160a is fixed to the pin 159, and the pin 159 is rotatably attached to the rotary cover 46.

  A procedure for changing the directions of the guide plates 160a to 160e of the guiding device 158 configured as described above will be described. When the handle 165 is rotated in the a direction, the guide plate 160a is rotated in the d direction around the pin 159. Since the guide plate 160b is connected at its tip to the tip of the guide plate 160a by the connecting rod 161, the guide plate 160b is pulled by the connecting rod 161 and rotates around the pin 159 in the d direction. On the other hand, since the rear end of the guide plate 160c is connected to the front end of the guide plate 160b by the connecting rod 161, the guide plate 160c is pulled by the connecting rod 161 and rotates around the pin 159 in the c direction. The front end of the guide plate 160c is connected to the front ends of the guide plates 160d and 160e by a connecting rod 161. Therefore, the guide plates 160d and 160e rotate in the c direction around the respective pins 159. In this way, the guide plates 160a to 160e can be directed in the 轍 T direction.

  In order to direct the guide plates 160a to 160e away from the heel T, the handle 165 is rotated in the b direction. The guide plate 160a rotates about the pin 159 in the c direction. Similarly, the guide plate 160b rotates in the c direction about the pin 159. On the other hand, the guide plates 160c to 160e rotate in the d direction around the pin 159. In this way, the direction of the guide plates 160a to 160e can be rotated in a direction away from the flange T. The guidance device 158 in this example is not limited to this, and can take any form.

  5 (a) and 5 (b) show a rotary working machine including a further example of a guide unit. In this example, a pair of guide plates (guide portions) 258 are fixed and provided so as to extend to the upper inside of the rotary cover 46. The guide plate 258 is a fin-shaped rectangular iron plate and is fixed to the inner surface of the rotary cover 46 by welding or the like. The guide plate 258 is attached so as to be inclined so as to guide the tilled soil that has been blown to the front of the rotary cover 46 to the kite T.

  6 (a) to 6 (c) show a rotary working machine provided with another example of the guiding unit. The position of the guide plate (guide portion) 360 in this example can be translated. The guide plate 360 and the moving device 70 constitute a guide device 358. A pair of guide plates 360 are provided on both sides of the rotary cover 46 in a substantially C shape in plan view, and can be translated by the moving device 70.

  The moving device 70 includes an engagement portion 70a, a screw portion 70b, a support portion 70c, a handle 70d, and the like. The engaging portion 70a is formed in a rectangular parallelepiped shape, and a screw is formed at the center, and a male screw of the screw portion 70b is engaged therewith. A guide rod 70ab is attached to the lower portion of the engaging portion 70a, and the guide rod 70ab is movably inserted into a long hole (not shown) formed in the rotary cover 46. A guide plate 360 is fixed to the lower end of the guide bar 70ab. Moreover, the support part 70c is formed in a rectangular parallelepiped, a round hole is formed in the center, and a ball bearing is provided in the inner periphery. The bottom surface of the support portion 70 c is fixed to the front surface of the rotary cover 46. Then, the screw part 70b is attached so as to be screwed into the engaging part 70a, and the tip and the root of the screw part 70b are rotatably attached to the support part 70c via ball bearings. In the support portion 70c, the screw portion 70b is prevented from coming off so as to restrict movement in the longitudinal direction.

  In order to translate the guide plate 360 in the width direction using the telescopic device 70 configured as described above, first, the handle 70d is grasped and rotated clockwise. Since the screw portion 70b is restricted from moving in the longitudinal direction by the support portion 70c, the engaging portion 70a moves in the long hole in the f direction, and the guide plate 360 also moves in parallel in the f direction. When the guide plate 360 slides to a desired position, the rotation of the handle 70d is stopped. In order to translate the guide plate 360 in the direction opposite to the direction f, the handle 70d is rotated counterclockwise. By the way, the telescopic device 70 of this example is not limited to this, and can take any form.

  The rotary working machine according to the present invention can be applied not only to agricultural tillage work but also to dig up the ground for all purposes such as afforestation, horticulture and construction.

21 Tractor (self-propelled working machine)
23 Front wheel 24 Rear wheel 41 PTO shaft 43 Main beam 44 Chain case 45 Rotary claw (cultivation claw)
45a Claw shaft 46 Rotary cover (Tillage cover)
47 Rear cover 50 Rotary work machine 58, 160a, 160b, 160c, 160d, 160e, 258, 360 Guide plate (guidance part)
70 telescopic device 70a engaging portion 70ab guide rod 70b screw portion 70c support portion 70d handle 158, 358 guide device 159 pin 161 connecting rod 162 pin 163 bar 164 knob 165 handle CL, ML center line F embankment T

Claims (4)

A plurality of tilling claws for cultivating soil, a claw shaft provided by projecting the tilling claws to the outer periphery, and a cultivation cover for dropping the cultivated soil to the front of the claw shaft and self-propelled In the rotary work machine that is used by connecting to the rear part of the type work machine,
A rotary working machine, characterized in that a guiding portion for guiding the tilled soil to the fence of the self-propelled working machine projects from the rear surface of the tilling cover.   2. The rotary working machine according to claim 1, wherein the guide part is formed in a fin shape and provided on both sides of the tillage cover.   The rotary work machine according to claim 1, wherein the direction of the guide portion is changeable.   The rotary working machine according to claim 1, wherein the guide portion is movable in parallel.

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