JP5405226B2 - Rotary work machine - Google Patents

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 working machine that is connected to the rear part and is driven by a driving force from a self-propelled working machine.

  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 described in claim 1 includes a plurality of tilling claws for tilling the soil, a claw shaft provided by projecting the tilling claws to the outer periphery, and a tilling cover for suppressing scattering of the tilled soil. In the rotary working machine connected to the rear part of the self-propelled working machine and driven by the driving force from the self-propelled working machine,
A rotary derivative for guiding the cultivated soil to the top of the self-propelled working machine is provided on the front side of the claw shaft and in the tillage cover, and the rotary derivative is driven by the self-propelled working machine. Driven by
The rotary derivative includes a rod-shaped rotation shaft and a guide portion provided in a spiral shape on the outer periphery of the rotation shaft,
The guiding portion is characterized in that a spiral forming direction is reversed with a center line in a width direction of the tillage cover and a center line of the self-propelled working machine as a boundary .

The invention according to claim 2 includes a plurality of tilling claws for tilling the soil, a nail shaft provided by projecting the tilling claws to the outer periphery, and a tilling cover for suppressing scattering of the tilled soil. In the rotary working machine connected to the rear part of the traveling work machine and driven by the driving force from the self-propelled working machine,
A rotary derivative for guiding the cultivated soil to the top of the self-propelled working machine is provided on the front side of the claw shaft and in the tillage cover, and the rotary derivative is driven by the self-propelled working machine. Driven by
The rotary derivative includes a rod-shaped rotating shaft and a guide portion provided in a fin shape inclined on the outer periphery of the rotating shaft ,
The guide portion is characterized in that the fin inclination direction is reversed with a center line of the tillage cover in the width direction and a center line of the self-propelled working machine as a boundary .

According to the invention described in claim 1, comprising a plurality of tilling claws for tilling soil, a claw shaft provided with projecting claws projecting to the outer periphery, and a tilling cover for suppressing scattering of the tilled soil, In rotary work machines that are connected to the rear part of self-propelled work machines and driven by the driving force from the self-propelled work machines, rotary derivatives for guiding the cultivated soil onto the self-propelled work machine are installed on the claw shaft. Provided in the front and in the tillage cover, the rotary derivative is driven by the driving force from the self-propelled working machine , and the rotary derivative has a rod-shaped rotary shaft and a guide section provided in a spiral on the outer periphery of the rotary shaft Since the direction of spiral formation is reversed with the center line in the width direction of the tillage cover and the center line of the self-propelled work implement as a boundary, the guide section has a hollow in the self-propelled work implement. Can be filled properly. 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. In addition, since the driving force of the rotary derivative is obtained from the self-propelled working machine, there is no need to separately provide a driving source for the rotary working machine, and a lightweight rotary working machine with a simple configuration can be provided. it can.

Moreover, since the rotary derivative includes a rod-shaped rotating shaft and a guide portion provided in a spiral shape on the outer periphery of the rotating shaft, the cultivated soil can be efficiently guided to the straw with a simple configuration.

According to the invention described in claim 2 , comprising a plurality of tilling claws for tilling the soil, a claw shaft provided with projecting claws protruding on the outer periphery, and a tilling cover for suppressing scattering of the tilled soil, In rotary work machines that are connected to the rear part of self-propelled work machines and driven by the driving force from the self-propelled work machines, rotary derivatives for guiding the cultivated soil onto the self-propelled work machine are installed on the claw shaft. Provided in the front and in the tillage cover, the rotary derivative is driven by the driving force from the self-propelled working machine, and the rotary derivative is provided in the form of a rod-shaped rotary shaft and fins inclined on the outer periphery of the rotary shaft. A guide portion, and the guide portion is characterized in that the fin inclination direction is reversed with the center line of the tillage cover in the width direction and the center line of the self-propelled work implement as a boundary. It is possible to properly fill the pit of the work machine. 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. In addition, since the driving force of the rotary derivative is obtained from the self-propelled working machine, there is no need to separately provide a driving source for the rotary working machine, and a lightweight rotary working machine with a simple configuration can be provided. it can.
In addition, the rotary derivative includes a rod-shaped rotating shaft and a guide portion provided in the shape of a fin inclined on the outer periphery of the rotating shaft, so that the cultivation soil can be efficiently guided to the straw with a simple configuration. it can.

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 FIG. 2, (b) is A arrow sectional drawing of (a). (A) is a principal part schematic perspective view of another example of the rotary working machine of this invention, (b) Still another example of the rotary working machine of this invention.

  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. In addition to the rotary pawl 45, a soil collecting screw (rotary derivative) 58 is rotatably provided in the rotary cover 46. A belt case 59 is provided on the left outer side of the rotary cover 46 in contact with the chain case 44.

  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. On the other hand, the driving force transmitted to the claw shaft 45a is also transmitted to the soil collecting screw 58 via a plurality of gears as will be described later.

  FIGS. 3A and 3B show the configuration of the soil collecting screw 58. The soil collecting screw 58 includes a rod-shaped rotating shaft 58a and a guide portion 58b provided in a spiral shape on the outer periphery of the rotating shaft 58a. In the guide portion 58b, the spiral forming direction is reversed with the center line CL in the width direction of the rotary cover 46 and the center line ML of the left and right rods T of the tractor 21 as a boundary. That is, it is provided such that the spiral advances in the direction M when the rotation shaft 58a rotates in the Q direction. Then, the pulley 60 is fixed to the left end portion of the rotating shaft 58a.

  On the other hand, a gear G1 is fixed to the left end portion of the claw shaft 45a, and a gear G2 meshing with the gear G1 is fixed to one end of the rotating shaft 63. A pulley 61 is fixed to the other end of the rotating shaft 63, and a belt 62 is wound around the pulley 60 and the pulley 61. With this configuration, the rotational power of the claw shaft 45a is transmitted to the pulley 61 via the gears G1 and G2, and further transmitted to the rotational shaft 58a via the belt 62 and the pulley 60. The rotation direction Q of the rotation shaft 58a is opposite to the rotation direction P of the claw shaft 45a through the gears G1 and G2.

  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.

  At the same time, the gear G1 provided at the left end of the claw shaft 45a also rotates, and rotational power is transmitted to the rotation shaft 58a via the gear G2, the pulley 61, the belt 62, and the pulley 60. As described above, the rotational power is transmitted to the rotary shaft 58a with the rotational direction reversed between the gear G1 and the gear G2, and the rotary shaft 58a rotates in the Q 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. This soil abuts on the soil collecting screw 58. Then, the soil conveyed to the front of the rotary cover 46 is guided by the spiral guide portion 58b of the earth collecting screw 58 and conveyed in the M direction, and is on both sides in the width direction (the front and rear wheels 23 and 24 of the tractor 21 are It falls on the heel T).

  Since the soil collecting screw 58 is rotated in the Q direction and the rotary pawl 45 is rotated in the P direction, the conveyed soil is in the R direction, that is, the ridge between the soil collecting screw 58 and the rotary pawl 45. Fall on T and fill the depression with fill F. The cultivated soil is flattened by the rear cover 47 to form a flat cultivated land having no irregularities.

  By the way, the soil collecting screw (rotary derivative) 58 may be configured as shown in FIG. That is, a fin-shaped guide portion 58b ′ is discontinuously provided on the outer periphery of the rotating shaft 58a. In this case, similarly to the above-described example, the guiding portion 58b ′ is provided to project obliquely along the outer periphery of the rotating shaft 58a so as to guide the cultivated soil toward the center line LL (corresponding to the above-described center line ML). .

  Further, as shown in FIG. 4B, the guide portion 58b ″ may be configured with an L-shaped member. Also in this case, as in the above-described example, the guiding portion 58b ″ is inclined along the outer periphery of the rotation shaft 58a so as to guide the cultivated soil toward the center line LL (corresponding to the above-described center line ML). Protrusively provided.

  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 Earth collecting screw (rotary derivative)
58a Rotating shaft 58b, 58b ′, 58b ″ Guide part 59 Belt case 60, 61 Pulley 62 Belt CL, LL, ML Center line F Filling G1, G2 Gear T 轍

Claims (2)

A plurality of tilling claws for cultivating soil, a claw shaft provided by projecting the tilling claws to the outer periphery, and a tilling cover for suppressing scattering of the cultivated soil are connected to the rear part of the self-propelled working machine. In the rotary working machine driven by the driving force from the self-propelled working machine,
A rotary derivative for guiding the cultivated soil to the top of the self-propelled working machine is provided on the front side of the claw shaft and in the tillage cover, and the rotary derivative is driven by the self-propelled working machine. Driven by
The rotary derivative includes a rod-shaped rotation shaft and a guide portion provided in a spiral shape on the outer periphery of the rotation shaft,
The rotary working machine is characterized in that a spiral forming direction is reversed with respect to a width of a center line of the tillage cover and a center line of the self-propelled working machine. A plurality of tilling claws for cultivating soil, a claw shaft provided by projecting the tilling claws to the outer periphery, and a tilling cover for suppressing scattering of the cultivated soil are connected to the rear part of the self-propelled working machine. In the rotary working machine driven by the driving force from the self-propelled working machine,
A rotary derivative for guiding the cultivated soil to the top of the self-propelled working machine is provided on the front side of the claw shaft and in the tillage cover, and the rotary derivative is driven by the self-propelled working machine. Driven by
The rotary derivative includes a rod-shaped rotating shaft and a guide portion provided in a fin shape inclined on the outer periphery of the rotating shaft,
The rotary working machine is characterized in that the direction of inclination of the fin is reversed with respect to a width of a center line of the tilling cover and a center line of the self-propelled working machine .

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