JP5916639B2 - Working machine - Google Patents

Description

  In the present invention, a working device assembly configured to be movable up and down and to be able to roll right and left is connected to the rear portion of the traveling machine body through a lifting mechanism. The present invention relates to a working machine provided with a plurality of powder and particle spraying devices capable of spraying powder and particles in a field.

A working machine described in [1] below is known as a working machine to which a working apparatus assembly including a plurality of powder and particle dispersing apparatuses is connected.
[1] As a working device assembly configured to be movable up and down via a lifting mechanism at the rear part of the traveling machine body and to be able to roll left and right, a seeding device is provided at the front part, a drug spraying apparatus is provided at the rear part, and the traveling machine body side Is transmitted to the seeding device and the spraying device via an input shaft (see Patent Document 1).

Japanese Utility Model Publication No. 63-45854 (refer to the specification page 1, column 2, line 8 to page 2, column 3, line 9, lines 1 to 3)

The above-described conventional technique is useful in that it is possible to simultaneously perform sowing of seed potatoes and spraying of medicine as the traveling machine body travels during paddy field work.
However, in this conventional structure, the rotation of the input shaft having the longitudinal axis along the traveling direction of the traveling machine body is converted into the rotation of the output sprocket having the lateral axis in the gear box. And a plurality of feed rolls of a seeding device disposed on the coaxial core are driven by being transmitted to a roll shaft having a left-right axis and a connecting pipe.
Then, the rotation of the roll shaft and the connecting pipe that are rotationally driven with a left-right axis is performed individually for each of the plurality of drug spraying devices via the sprocket and the chain individually. And each drug spraying device is driven for each roll axis.

  In the structure configured as above, in addition to the driving force for each seeding device, the driving force for each drug spraying device is added to the roll shaft and the connecting pipe on the seeding device side to which the power of the output sprocket is transmitted. Therefore, the roll shaft and the connecting pipe on the seeding device side are required to have sufficient strength to drive the seeding device and sufficient strength to drive each seeding device, so that it is strong and heavy in weight. There was a tendency.

  An object of the present invention is to simplify the drive structure for a plurality of granular material spraying devices existing before and after, and to reduce the weight of the entire working device assembly.

  The technical means of the working machine according to the present invention taken to achieve the above object has structural features and operational effects in the following points.

[Solution 1]
The technical means of the present invention taken in order to solve the above problem is that a working device assembly capable of rolling up and down around the rolling axis along the front-rear direction is connected to the rear part of the traveling machine body through a lifting mechanism. The working device assembly includes a plurality of powder spraying devices capable of spraying powder on the field over the entire width of the spray target range in the left-right direction, and a driving force for the plurality of powder spraying devices. And the plurality of powder and particle dispersion devices are arranged to be distributed on the front side and the rear side in the traveling direction of the traveling machine body, and in the middle of the power transmission mechanism Are provided with power branching portions for distributing the driving force to each of the front side granular material spreading device and the rear side granular material spreading device. One end in the direction and the powder dispersion equipment on the rear side The power from the power transmission mechanism is branched and input to each of the other end portions of the power supply mechanism, and the power branch portion is provided at an intermediate portion in the left-right direction of the work device assembly. It is that.

[Operation and effect of invention according to Solution 1]
According to the invention relating to the solution 1, the driving force for each of the front and rear powder distribution devices is input to any of the powder distribution devices. The power after being branched at the power branching portion is distributed and inputted to the powder distribution device on the front side and the powder distribution device on the rear side.
As a result, the drive system that transmits the power after branching has a drive load on either the drive load of the powder distribution device on the front side or the drive load on the powder distribution device on the rear side. Only acts, and does not require a strength structure corresponding to a high load sufficient to drive both the front and rear powder distribution devices.
Therefore, the structure of the drive system that transmits the power after being branched does not require a heavy weight transmission member for obtaining high strength and a sturdy support structure for supporting it. There is an advantage that the weight can be easily reduced.

  In addition, the transmission structure for each of the front and rear powder distribution devices is such that the power branching portion is provided at an intermediate portion in the left-right direction of the work device assembly, Power is branched and input to each of one end portion in the left-right direction of the granular material spraying device and the other end portion of the rear granular material spraying device. For this reason, even if each of the front side granular material spraying device and the rear side powder granular material spraying device has a structure having a plurality of feeding parts, it can be driven from the end side in a lump, It is possible to simplify the structure and facilitate maintenance and inspection. Moreover, the transmission structure is advantageous in that it is distributed to the left and right from the intermediate portion in the left-right direction of the work device assembly, and the weight balance in the left-right direction is easily maintained.

[Solution 2]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the branch transmission shaft extending in the left-right direction from the power branching portion has a powder-dispersing device on the front side and a powder on the rear side in plan view. It is arrange | positioned between granule dispersion apparatuses.

[Operation and effect of invention according to Solution 2]
According to the invention relating to the above solution 2, between each of the front and rear powder distribution devices, the respective powder distribution devices are disposed above the powder storage unit. Therefore, there is a tendency that a certain amount of spatial margin in the front-rear direction is inevitably generated between the front and rear powder dispersion devices. In the present invention, the space that is inevitably generated in the front-rear direction is effectively used, and the branch transmission shaft that extends in the left-right direction from the power branch portion is forced without increasing the length of the work device assembly in the front-rear direction. There is an advantage that it can be arranged without any problems.

[Solution 3]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the plurality of granular material spraying devices adjust the feeding amount of the granular material fed out from each of the granular material spraying devices separately. This means that the feed amount adjusting operation tool is provided, and each feed amount adjusting operation tool is disposed at the same one end in the left-right direction of the working device assembly.

[Operation and effect of invention according to Solution 3]
According to the invention relating to the solving means 3 described above, the plurality of granular material spreading devices on the front side and the rear side are for individually adjusting the feeding amount of the granular material fed from the respective granular material spreading devices. Since the feeding amount adjusting operation tool is disposed at the same one end in the left-right direction of the working device assembly, the adjusting operation of the feeding amount can be easily performed. In other words, when you want to change the feed amount in the other granular material spraying device with the change in the feed amount in one powder particle spraying device, move from one end side to the other end side of the working device assembly. There is an advantage that the adjusting operation can be performed easily and quickly while keeping the same position without performing the adjusting operation.

[Solution 4]
Another technical means of the present invention taken to solve the above-described problems is that each feed amount adjustment operation tool is a side where each of the feed amount adjustment operation tools is located among the plurality of powdered body dispersion devices. It is provided so that it may be located in the center side rather than the site | part located in the outermost side in the left-right direction.

[Operations and effects of invention according to Solution 4]
According to the invention relating to the solving means 4 described above, each feed amount adjusting operation tool is provided on the left and right ends of the working device assembly, but each feed amount adjusting operation tool is provided on the left and right sides of the powder particle distribution device. Since it is located closer to the center than the part located on the outermost side in the direction, there is an advantage that it is easy to work while avoiding contact with other objects.

[Solution 5]
Other technical means of the present invention taken in order to solve the above-described problems are that the power transmission mechanism includes a branch transmission shaft extending in the left-right direction from the power branch portion, and each of the plurality of granular material spreading devices. An input transmission shaft and an interlocking mechanism that transmits power from the branch transmission shaft to the input transmission shafts are configured, and the interlocking mechanism includes the plurality of granular material spreading devices. A crank arm that rotates in conjunction with the rotation of the branch transmission shaft that transmits power to at least one of the powder dispersion devices, and an oscillating arm that transmits rotational motion to the input transmission shaft of the one powder distribution device; And a drive rod that connects the crank arm and the swing arm, and is configured by a lever crank mechanism that converts the rotational motion of the crank arm into the reciprocating swing motion of the swing arm and drives the input transmission shaft. And The working device assembly includes a first horizontally long support member arranged to support the branch transmission shaft along the longitudinal direction of the branch transmission shaft, and an input device along the longitudinal direction of the input transmission shaft. A second horizontally long supporting member arranged to support the transmission shaft is provided, and a connecting member extending between the first horizontally long supporting member and the second horizontally long supporting member is provided, and the connecting member includes the driving rod. That is, it is disposed along the extending direction of the drive rod in the vicinity of the disposed portion.

[Operation and effect of invention according to Solution 5]
According to the invention relating to the solution means 5 described above, when a lever crank mechanism is employed as an interlocking mechanism for transmitting power from the branch transmission shaft to the input transmission shaft of the granular material spraying device, the leverage crank mechanism is provided. There is a tendency to cause the following problems in the work device assembly near the spot.
That is, in the working device assembly, a part of the first horizontally long supporting member that supports the branch transmission shaft and the second horizontally long supporting member that supports the input transmission shaft are alternately connected with the reciprocating rotation of the lever crank mechanism. A load acts. For this reason, it is conceivable that the first horizontally long support member and the second horizontally long support member are made of robust structural members, or that a separate reinforcing structure is provided corresponding to the alternating load. This is not preferable because it causes an increase in weight.
Therefore, in the present invention, the connecting member for connecting the first horizontally long supporting member and the second horizontally long supporting member is arranged near the portion where the driving rod of the lever crank mechanism is disposed along the extending direction of the driving rod. Thus, there is obtained an advantage that the required strength of the working device assembly can be ensured without adding a special reinforcing structure.

[Solution 6]
The other technical means of the present invention taken in order to solve the above-mentioned problem is that the working device assembly is opposite in the left-right direction to the end portion on the side where the interlocking mechanism constituted by the lever crank mechanism is provided. A transmission gear incorporated in a transmission case as an interlocking mechanism that links a branch transmission shaft extending in the left-right direction from the power branching portion and an input transmission shaft of the plurality of powder and granular material dispersing devices at the end of Alternatively, a rotation transmission mechanism using a transmission chain is provided, and this interlocking mechanism is configured to be detachable from the branch transmission shaft and the input transmission shaft together with the transmission case.

[Operations and Effects of Invention According to Solution 6]
According to the invention relating to the above solution 6, the interlocking mechanism existing at one end portion in the left-right direction of the work device assembly is formed by a transmission gear or a transmission chain that can be easily attached to and detached from the branch transmission shaft and the input transmission shaft. By configuring the rotary transmission mechanism and detaching the interlocking mechanism together with the transmission case, it is possible to increase / decrease the lateral length of the work device assembly by an attaching / detaching operation of the interlocking mechanism.
Therefore, for example, when the work device assembly is carried on a transport vehicle, the interlock mechanism is removed together with the transmission case so that it does not protrude from the transport platform of the transport vehicle, or the loading area is reduced to a small extent. There are advantages such as being widely available.

[Solution 7]
Another technical means of the present invention taken in order to solve the above-mentioned problems is that the plurality of powder and dust material spraying devices each spray dust particles to a partial region of the spray target range in the left-right direction. A small number of clutches that can be stopped, and in conjunction with the on / off operation of the small number of clutches of one of the powder distribution devices, the small number of clutches of the other particle distribution device is operated similarly. It is that it is configured.

[Operation and effect of invention according to Solution 7]
According to the invention according to the above solution 7, since the minority clutch of the other granular material spraying device can be operated in the same manner in conjunction with the minority clutch of the other granular material scattering device, both There is an advantage that it is not necessary to individually operate the small number of clutches of the granular material spraying apparatus, and the operation can be simplified. Also, not only the ease of operation, but only turning on and off the minority clutch of one granular material spraying device, forgetting the on and off operation of the minority clutch of the other granular material spraying device that operates in conjunction This is also advantageous in that it is possible to avoid this problem.

It is a side view which shows the whole direct seeding machine. It is a top view which shows the whole direct seeding machine. It is a perspective view which shows the frame frame of a working device assembly. It is a rear view which shows a working device aggregate | assembly. It is a rear view which shows the fertilizer application part of a working device assembly. It is a left view which shows a working device aggregate | assembly. It is sectional drawing which shows the arrangement | positioning relationship of the axis | shaft in the transmission system of a working device assembly. It is a right view which shows the lever crank mechanism in a working device assembly | assembly. It is a diagram which shows the power transmission system in a working device assembly part. It is a top view which shows the linkage structure of a small number of clutches. It is a diagram which shows the power transmission system of the working device assembly part in another embodiment. It is a top view which shows the working device assembly part in another embodiment. It is a diagram which shows the power transmission system of the working device assembly part in a comparative example.

Hereinafter, an embodiment of a direct seeding machine which is an example of a working machine in the present invention will be described based on the drawings.
[Overall configuration of direct seeder]
FIG. 1 is a side view showing the entire direct seeding machine according to the present invention. As shown in FIGS. 1 and 2, in the direct seeding machine according to the present invention, the front portion of the body frame 10 is supported by a pair of left and right front wheels 11 and 11 that can be steered and the rear portion is a pair of left and right drives. The self-propelled traveling machine body 1 is configured by being supported by the free rear wheels 12 and 12. A work device assembly A is connected to the rear portion of the vehicle body frame 10 of the traveling machine body 1 via a link mechanism 16.

  The traveling machine body 1 includes a driving unit 13 at the front of the vehicle body, and is configured to drive the front wheels 11 and the rear wheels 12 by a driving force from an engine 14 provided in the driving unit 13 so as to self-run. A driving part having a driver's seat 15 is provided at the rear of the vehicle body, and is configured as a riding type so as to ride on the driving part for driving. On the rear side of the driver's seat 15 in the driving section, a plate-like step 17 extending toward the rear side from the rear end of the vehicle body frame 10 is provided, and the rear side of the traveling vehicle body 1 is seen in plan view. A handrail 18 made of metal pipe is erected along the end portion and the rear end edge of the step 17.

  The working device assembly A is lowered when the link mechanism 16 is swung up and down with respect to the vehicle body frame 10 by a hydraulic cylinder (not shown) for raising and lowering, so that the leveling float 59 is in contact with the field mud. The ascending / descending operation is performed between the working state and the ascending non-working state in which the leveling float 59 rises high from the field mud. Further, the working device assembly A is connected to a vertically-facing vertical link member 16a provided at the rear end portion of the link mechanism 16 so as to be swingable left and right around a rolling axis z along the front-rear direction.

[Working equipment assembly]
The working device assembly A will be described.
As shown in FIGS. 1 and 2, the working device assembly A includes a fertilizer application device 2 for spraying fertilizer, a seeding device 3 for spraying seed pods, and a drug spraying device 4 for spraying a medicine such as a herbicide. These are attached to the frame frame 5 and fixed integrally therewith, and a leveling float 59 is provided at the lower part of the frame frame 5 so that the work device assembly A is lowered to the lowered work state. By traveling the traveling machine body 1, the work device assembly A is configured to perform 6 seeding operations, 6 fertilization, and chemical spraying operations.

The fertilizer applicator 2 is arranged at six locations within a range corresponding to substantially the entire width of the working device assembly A in the left-right direction so as to perform fertilization work corresponding to six strips. It is configured to supply fertilizer from FIG.
The sowing device 3 has seed seed guides 32 (disposed in six locations within a range corresponding to substantially the entire width in the left-right direction of the working device assembly A so as to perform sowing work corresponding to six lines. The seed soup is supplied from the lower end (see FIG. 4).
As shown in FIGS. 1 and 2, the medicine spraying device 4 is disposed above the rear end portion of the working device assembly A, and corresponds to a substantially full width of the working device assembly A in the left-right direction. A medicine such as a herbicide is scattered and supplied to the field by rotation of a diffusion blade (not shown) provided inside the apparatus.

  The work device assembly A is configured such that the driving force from the engine 14 provided in the prime mover 13 of the traveling machine body 1 is input via the power transmission shaft 19. This driving force is applied to the fertilizer application device 2 and the seeding device 3 among the plurality of powder particle distribution devices provided to the work device assembly A via the power transmission mechanism 6 provided to the work device assembly A. It is configured to be branched and transmitted. And the chemical | medical agent dispersion | spreading apparatus 4 of the some granular material dispersion | spreading apparatuses with which the working apparatus aggregate | assembly A was equipped uses the drive electric motor (not shown) provided separately as a motive power source, and the said fertilizer 2 and seeding apparatus 3 is configured to be driven separately.

[Underframe frame]
As shown in FIGS. 1 and 3, the working device assembly A includes a frame frame 5 having a front end connected to a lower portion of a rear link 16 a that vertically faces the machine body constituting the link mechanism 16, and the frame frame 5 However, it is configured to be able to swing left and right around the rolling axis z.
The underframe 5 includes a mounting frame 50 to which the gear case 61 of the power transmission mechanism 6 is connected, a main frame 51 that is long in the left-right direction integrally welded to the mounting frame 50, and the fertilizer application device 2. The support frame 52 for fertilization that is long in the left-right direction for supporting the seeding device, the support frame 53 for sowing that is long in the left-right direction for supporting the seeding device 3, and the rear end side along the front-rear direction so as to support the drug spraying device 4 And a medicine support frame 54 facing upward.

The mounting frame portion 50 includes a pivot boss portion 50a of a power input shaft 60, which will be described later, in the center portion, and a gear case 61 serving as a branch portion of the power transmission mechanism 6 is connected to the rear end portion of the pivot boss portion 50a. A mounting seat 50b for fixing is integrally formed.
A medicine support frame 54 for supporting the medicine spraying device 4 is detachably bolted to the upper end portion of the attachment frame portion 50 via an attachment plate 54a.

  The main frame 51 is constituted by a pipe-shaped frame having a rectangular cross section. The sowing support frame 53 located on the rear side of the main frame 51 is also formed of a pipe-shaped frame having a rectangular cross section, and the sowing support frame 53 and the main frame 51 are connected at the end portions along the front-rear direction at both left and right end portions. The frame 55 and the intermediate connection frame 56 located at three positions closer to the center than the end connection frame 55 are connected by welding, and are formed in a ladder shape in plan view.

That is, the front end sides of the end connection frames 55 at both left and right end portions connected across the main frame 51 and the seeding support frame 53 are fixed to the lower surface of the main frame 51 by welding. Among the end connection frames 55, the left end connection frame 55 is provided with a mounting bracket 55a for a chain case 66b of the rotation transmission mechanism 66, which will be described later, on the rear end side thereof, and the mounting bracket 55a. The upper part of the base plate is welded and fixed to the left end portion of the seeding support frame 53 so that it also serves as a connecting member.
The right end connecting frame 55 is provided with a shaft support member 55b for attaching a bearing for supporting the right end of the branch transmission shaft 62 extending rightward from the power branch at the rear end. Has been. The upper part of this shaft support member 55b is welded and fixed to the right end of the seeding support frame 53, so that it also serves as a connection bracket.

The main frame 51 and the sowing support frame 53 are also welded by the intermediate connection frame 56 along the front-rear direction at three locations in the left-right direction, even at the central side of the end connection frames 55, 55 on the left and right ends. It is fixed. The front end side of each intermediate part connection frame 56 is welded and fixed to the lower surface of the main frame 51, and the upper part of the vertical rod 56 a erected on the rear end side is welded and fixed to the front side of each intermediate part connection frame 56. Yes.
In addition, the float connection body 56b for connecting the rear-end part of the leveling float 59 so that rocking | fluctuation is possible is continuously provided in the rear-end part of each intermediate part connection frame 56. FIG.

The fertilizer application support frame 52 has the upper end of each connecting member 57 connected to the left and right ends and the center by bolts. Of the connecting members 57, the lower end of the connecting member 57 at the left end is bolted to a bracket 55 c erected at an intermediate position in the front-rear direction of the left end connecting frame 55.
The lower end of the connecting member 57 at the right end is bolted to the shaft support member 55 b at the rear end of the right end connecting frame 55. Further, the lower end of the connecting member 57 in the central portion is welded and connected integrally with the mounting plate 54a of the drug support frame 54 on the upper surface side of the mounting frame part 50, and the upper surface of the mounting frame part 50 together with the drug support frame 54. It is bolted to the side.

The connecting body of the main frame 51 and the sowing support frame 53 constitutes a first horizontally long supporting member, and the first horizontally long supporting member extends from the gear case 61 serving as a branching portion in the left-right direction. It is arranged along the longitudinal direction of the branch transmission shaft 62 and is configured to support the branch transmission shaft 62.
Further, the fertilizer application support frame 52 constitutes a second horizontally long support member, and this second horizontally long support member is provided along the longitudinal direction of the input transmission shaft 64 for inputting a driving force to the fertilizer application apparatus 2, The input transmission shaft 64 is configured to be supported.
The first horizontally long support member and the second horizontally long support member are connected by the connecting member 57 at the center portion in the left-right direction and both left and right end portions, whereby the frame frame 5 is configured.

Of the connecting members 57 that connect the first horizontally long supporting member and the second horizontally long supporting member, the connecting member 57 disposed at the right end of the supporting frame 52 for fertilization is the same as the other connecting members 57 on the upper end side. Although connected to the rear surface, the lower end side is connected to a position closer to the seeding support frame 53 on the rear side than the main frame 51 on the front side so that the lower end side is located on the rear side with respect to the lower end portion of the other connecting member 57. It is fixed.
As a result, the connecting member 57 disposed at the right end is in the left-right direction with respect to a drive rod 63a of a lever crank mechanism 63 (corresponding to an interlocking mechanism) provided at the right end of a branch transmission shaft 62 described later. It is in a close position and is disposed so as to be positioned substantially along the extending direction of the drive rod 63a in both the rear view and the side view.

  The forward protrusions 52a, 52a provided on the left and right sides of the fertilizer application support frame 52 in FIG. 3 are when the working device assembly A rolls around the axis p1 of the power input shaft 60 along the front-rear direction. In addition, an engaging member for attaching an end portion of the tension spring 58 that elastically biases the swinging posture to the side to restore the horizontal posture is configured.

  A fertilization tank 20 including six fertilizer storage portions 20a provided in a row in a row in the horizontal direction of the machine body is supported on the front frame of the support frame 52 for fertilization with respect to the frame frame 5. A seeding tank 30 provided with six seed tub storage portions 30a provided in a rear row of the support frame 53 and arranged in a line in the horizontal direction of the machine body is supported. The drug spraying device 4 is attached to the end portion of the drug support frame 54 that extends further rearward and upward than the seeding support frame 53.

  Below the underframe frame 5 is provided a leveling float 59 provided such that the front end side thereof is swingable up and down around the swinging fulcrum x on the rear side. The leveling float 59 is composed of three floats, a center float provided at the center in the left-right direction and a pair of side floats provided on the left and right sides, and each float swings up and down on the front end side individually. Equipped as possible.

[Fertilizer]
The fertilizer applicator 2 will be described.
As shown in FIG. 4 to FIG. 7, the fertilizer application device 2 is a fertilizer feed unit provided with a known feed roll (not shown) on a horizontally long fertilization support frame 52 provided on the front side of the underframe frame 5. Since 21 is connected and fixed, it is fixedly supported to the frame frame 5.
This fertilizer applicator 2 includes a fertilizer feeding unit 21, a fertilizer tank 20 provided above the fertilizer feeding unit 21, a fertilizer supply tube 23 extending downward from the lower part of the fertilizer feeding unit 21, and an extension of the fertilizer supply tube 23. A groove forming device 25 communicated with the leading end portion via a bellows tube 24 is provided. The grooving device 25 is provided at a position displaced in the left-right direction with respect to a lower end of a seed vat guide body 32 described later of the seeding device 3.

Six fertilizer feed-out portions 21 are connected and fixed to the fertilizer application support frame 52 so as to be arranged in a line along the horizontal direction of the underframe frame 5.
The fertilizer feed unit 21 is provided with a fertilizer feed shaft 65 that rotationally drives an internal feed roll. The fertilizer feed shaft 65 is provided via a small number of clutches 70 provided at three positions on the input transmission shaft 64. The power is transmitted.

  The fertilizer device 2 configured in this manner rotates the input transmission shaft 64 for fertilization to which the driving force is transmitted from the branch transmission shaft 62 via a lever crank mechanism 63 (see FIG. 8) described later as an interlocking mechanism. Accordingly, the fertilizer feed shaft 65 is rotated by a predetermined amount, and the fertilizer in the fertilizer tank 20 is configured to be fed to the fertilizer supply pipe 23 side by a predetermined amount.

The adjustment of the fertilizer supply amount from the fertilizer feeding unit 21 is performed by changing the swing angle θ of the swing arm 63b described later, with a part of the lever crank mechanism 63 provided at the right end of the working device assembly A. The fertilizer supply amount is changed.
Therefore, the engaging portion 63d that can change the engagement position with the drive rod 63a in the longitudinal direction of the swing arm 63b in order to change the swing angle θ of the swing arm 63b is a fertilizer feed portion of the fertilizer applicator 2. The feed amount adjusting operation tool for adjusting the fertilizer supply amount from 21 is configured.

[Seeding equipment]
The seeding device 3 will be described.
As shown in FIGS. 4 to 7, in the seeding device 3, six seeding feeding parts 31 are connected to a horizontally long seeding support frame 53 provided on the rear side of the underframe frame 5 in a line in the horizontal direction of the machine body. It is fixed. And the sowing tank 30 provided with the six sowing container portions 30a is supported on the upper side of the sowing and feeding part 31, and the channel-like cross section in which the rear side is opened in the horizontal section below the sowing and feeding part 31. The soot seed guide 32 is continuously provided.

The seeding feeding unit 31 includes a known feeding roll (not shown) inside, and this feeding roll is rotationally driven in one direction by a seeding input transmission shaft 67 to which a driving force is transmitted from the branch transmission shaft 62. By doing so, a predetermined amount of soot is intermittently fed out from the seeding and feeding unit 31 for every predetermined amount of rotation of the input transmission shaft 67.
The adjustment of the amount of seed soup supplied from the seeding and feeding unit 31 is arranged along the length direction of the input transmission shaft 67 in accordance with the rotation operation of the operation handle 69a provided at the right end of the working device assembly A. This operation is performed by a known feed amount adjustment mechanism (not shown) that changes the amount of seed soup discharged per rotation by the feed roll by rotating the operation shaft 69.
Therefore, the operation handle 69a is configured as a feed amount adjusting operation tool for adjusting the feed amount of the seed pod fed from the seed pod feed portion 31 of the seeding device 3.

In the sowing tank 30, an iron-coated seed pod is accommodated as an example of the seed potato. It is configured to be intermittently supplied to the lower mud surface and spotted.
As shown in FIG. 5, the seed soot guide body 32 is located laterally away from the fertilizer supply groove producing device 25 in the left-right direction, and behind the fertilizer supplying groove producing device 25 in the aircraft traveling direction. It is provided at a side location and at substantially the same longitudinal position as the swing fulcrum x of the leveling float 59.

[Drug spraying device]
The medicine spraying device 4 will be described.
As shown in FIGS. 1 and 2, the medicine spraying device 4 is directed rearward and upward from the frame frame 5 so as to be located at the rearmost portion of the working device assembly A and at the substantially central portion in the left-right direction. It is attached to the end of the medicine support frame 54 extended in this manner.
The medicine spraying device 4 includes a medicine tank 40 for storing a herbicide or a pest control medicine in the upper part, and a medicine fed from the medicine tank 40 is diffused and supplied in the left-right direction by diffusion blades (not shown). The diffusing part 41 is provided.
The scattering supply range is set so that the drug splashed by the diffusion blades of the diffusion unit 41 is scattered over a range corresponding to substantially the entire width of the working device assembly A in the left-right direction.

[Power transmission mechanism]
The power transmission mechanism 6 provided in the work device assembly A will be described.
As shown in FIGS. 4, 6, and 9, the rotational power of the engine 14 on the traveling machine body 1 side is transmitted to the power input shaft 60 of the power transmission mechanism 6 provided in the work device assembly A. It is.
That is, the front end side of the power input shaft 60 is connected to the power transmission shaft 19 to which the rotational power of the engine 14 is transmitted via the universal joint 19a.
The power input shaft 60 is pivotally supported by a pivot boss portion 50 a provided in the mounting frame portion 50 of the underframe frame 5 and is connected to the gear case 61 attached to the mounting frame portion 50. It is equipped with a bevel gear 60a provided at the rear end portion inserted.

In the gear case 61, a branch transmission shaft 62 having a bevel gear 62a meshing with the bevel gear 60a extends from the gear case 61 to the left and right sides.
That is, the driving force transmitted to the power input shaft 60 is applied to the fertilizer application 2 side in the gear case 61 corresponding to the power branching portion for distributing the drive force to each of the fertilizer application device 2 and the seeding device 3. The power is branched and transmitted to the right branch shaft portion 62R of the branch transmission shaft 62 that transmits power and the left branch shaft portion 62L of the branch transmission shaft 62 that transmits power to the seeding device 3 side.
As shown in FIG. 7, the branch transmission shaft 62 is attached to the underframe frame 5 in a state of being positioned between the fertilizer 2 on the upper front side and the sowing device 3 on the rear side. That is, as shown in FIGS. 3, 6, and 9, the left end portion is supported by the rotation transmission mechanism 66 attached to the mounting bracket 55 a provided at the left end portion of the underframe frame 5. The right end portion is supported by a bearing (not shown) provided on a shaft support member 55b provided on the right end portion of the frame 5, and the input transmission shaft 64 of the fertilizer application device 2 and the seeding device 3 are viewed in plan view. It is arranged between the input transmission shaft 67.

  Of the branch transmission shaft 62, the right branch shaft portion 62 </ b> R extending in the right direction is an interlocking mechanism connected to the right end of the branch transmission shaft 62. The driving force is transmitted to the power transmission shaft 64. The power transmitted to the input transmission shaft 64 is transmitted to the fertilizer feed shaft 65 through the small number of clutches 70 provided at three locations on the input transmission shaft 64. Along with the rotation of the fertilizer supply shaft 65, the supply roll in the fertilizer supply unit 21 rotates by a predetermined amount, and the fertilizer in the fertilizer tank 20 is supplied by a predetermined amount toward the fertilizer supply pipe 23. .

  Of the branch transmission shaft 62, the left branch shaft portion 62L extending in the left direction is input to the rear sowing apparatus 3 via a rotation transmission mechanism 66 (corresponding to an interlocking mechanism) connected to the left end portion thereof. The driving force is transmitted to the transmission shaft 67 for use. The power transmitted to the input transmission shaft 67 is transmitted to the seed soot feeding shaft 68 via the small number of clutches 71 provided at six locations on the input transmission shaft 67. Along with the rotation of the seed pod feeding shaft 68, the feeding roll in the seed mash feeding portion 31 is rotated by a predetermined amount, and the seed potato in the sowing tank 30 is fed by a predetermined amount toward the seed potato guide body 32. .

At the left end opposite to the right end provided with the lever crank mechanism 63 for transmitting power from the branch transmission shaft 62 to the input transmission shaft 64 of the fertilizer application device 2, the seeding device 3 is connected to the seeding device 3 from the branch transmission shaft 62. The rotation transmission mechanism 66 that transmits the driving force to the input transmission shaft 67 is configured as follows.
As shown in FIGS. 7 and 9, the rotary transmission mechanism 66 includes a drive sprocket 62b provided at the left end of the branch transmission shaft 62, a passive sprocket 67a provided at the left end of the input transmission shaft 67, A transmission chain 66a stretched over the drive sprocket 62b and the passive sprocket 67a is constituted by a structure housed in a chain case 66b. The rotation transmission mechanism 66 is configured to decelerate the rotation of the branch transmission shaft 62 and transmit it to the input transmission shaft 67 by using a passive sprocket 67a having a diameter larger than that of the drive sprocket 62b.

  The seeder feeding shaft 68 of the seeding device 3 is provided with an input gear 68a that meshes with the transmission gear 71a of the minority clutch 71, and a linkage gear 68b that meshes with the linkage gear 69b of the operation shaft 69. Then, the linkage gear 68b is rotated in accordance with the rotation operation of the operation handle 69a provided at the right end portion of the operation shaft 69, and the seedling accommodation recess is provided by changing the axial length of the seedling accommodation recess provided on the peripheral surface of the feeding roll. By changing the capacity of the concave portion, a known feed amount adjusting mechanism is configured to change the amount of seed soy discharged per one turn by the feed roll.

The lever crank mechanism 63 provided at the right end of the working device assembly A is configured as shown in FIGS. That is, a crank body 62c (corresponding to a crank arm) is provided at the right end portion of the branch transmission shaft 62, and the drive rod 63a is located at an eccentric position away from the axis of the branch transmission shaft 62. One end is connected.
The other end of the drive rod 63a is bent in the left-right direction, and is locked to an engagement portion 63d provided on the free end side of the swinging arm 63b pivotally supported by the input transmission shaft 64 of the fertilizer applicator 2. As a result, the swing arm 63b is connected. Then, the crank body 62c is changed by changing the position of the drive rod 63a in the engagement portion of the engagement portion 63d provided in the swing arm 63b in the direction near to the axis of the input transmission shaft 64. The swinging angle θ of the swinging swing of the swinging arm 63b accompanying the rotation of the swinging arm 63b is changed, and the fertilizer supply amount from the fertilizer feeding unit 21 of the fertilizer applicator 2 is adjusted.

  The branch transmission shaft 62 is rotated by the crank body 62c, the swing arm 63b swinging around the input transmission shaft 64, and the drive rod 63a connecting the crank body 62c and the swing arm 63b. A lever crank mechanism 63 for driving the input transmission shaft 64 of the fertilizer application 2 is configured by converting the accompanying rotational motion of the crank body 62c into reciprocating swing motion of the swing arm 63b.

In this lever crank mechanism 63, another short swing arm 63c extending in the direction opposite to the swing arm 63b is attached to the input transmission shaft 64 so as to be swingable. These swinging arms 63b and 63c are closer to the input transmission shaft 64 than the engaging portion 63d, and are located on both sides of the input transmission shaft 64 at one end side of the operation links 63e and 63e. Are connected so as to be relatively rotatable. The other ends of the operation links 63e and 63e are rotatably connected to an operation arm 63f that is pivotally supported by the fixed support shaft 22.
The long swing arm 63b to which the drive rod 63a is connected and the short swing arm 63c extending to the other end side across the input transmission shaft 64 are respectively one-way clutches 64a and 64a. The input transmission shaft 64 is provided so as to be rotationally driven in the same rotational direction.
Accordingly, when the input transmission shaft 64 is rotationally driven in one direction by the forward swing of the long swing arm 63b, the short swing arm 63c rotates in the non-driven state in the reverse direction, When the swing arm 63b swings in the backward stroke, the input transmission shaft 64 returns without being driven, and the short swing arm 63c swings in the one direction to rotationally drive the input transmission shaft 64. As a result, the input transmission shaft 64 is driven to rotate in both the forward and backward strokes of the long swing arm 63b.

[Linkage structure of minority clutch]
The three minority clutches 70 provided in the drive system of the fertilizer applicator 2 and the six minority clutches 71 provided in the drive system of the seeding device 3 are configured to operate in linkage as follows. Yes.
Each minority clutch 70 provided in the drive system of the fertilizer applicator 2 is limited in axial movement with respect to the input transmission shaft 64 so as to always mesh with the input gear 65 a of the fertilizer feed shaft 65, and is connected to the input transmission shaft 64. A transmission gear 70a is provided so as to be relatively rotatable with respect to the input transmission shaft 64, and a shift gear 70b is provided which is not rotatable relative to the input transmission shaft 64 and is movable in the axial direction relative to the transmission gear 70a.
The shift gear 70b is engaged with an engaging portion formed on the side surface of the transmission gear 70a in a state of being close to the transmission gear 70a to be in a clutch-engaged state, and is separated from the transmission gear 70a. The engagement with the engaging portion formed on the side surface of 70a is released and the clutch is disengaged.

  Each of the shift gears 70b of the three minority clutches 70 provided in the drive system of the fertilizer applicator 2 is configured to be slidable along the axial direction of the input transmission shaft 64 by shift members 72 that operate individually. The shift member 72 is configured to slide the shift gear 70b in conjunction with the swinging operation of the operation lever 73 provided at an appropriate position of the frame frame 5.

Each minority clutch 71 provided in the drive system of the seeding device 3 is restricted in axial movement with respect to the input transmission shaft 67 so as to be always meshed with the input gear 68 a of the seed soot feeding shaft 68, and is connected to the input transmission shaft 67. On the other hand, a transmission gear 71a provided so as to be relatively rotatable, and a shift gear 71b provided so as not to be rotatable relative to the input transmission shaft 67 and to be movable in the axial direction relative to the transmission gear 71a.
The shift gear 71b is engaged with an engaging portion formed on the side surface of the transmission gear 71a in a state of being close to the transmission gear 71a to be in a clutch-engaged state, and in a state of being separated from the transmission gear 71a. The engagement with the engaging portion formed on the side surface of 71a is released and the clutch is disengaged.

  The shift gears 71b of the six-way small number of clutches 71 provided in the drive system of the seeding device 3 are configured to be slidable along the axial direction of the input transmission shaft 67 by the shift members 74, respectively. The shift member 74 is configured to slide the shift gear 71b in conjunction with the swinging operation of the operating lever 73 provided at an appropriate position of the underframe frame 5.

That is, among the shift gears 71 b of the small number of clutches 71 provided at six locations on the input transmission shaft 67, a pair of shift members 74 that operate the adjacent shift gears 71 b in order from the end portion are connected via the linkage rod 75. In this state, the pair of shift members 74 are present at three positions on the input transmission shaft 67.
The pair of shift members 74 that are interlocked and connected to each other via the linkage rod 75 has a small number of clutches 70 that are provided on the drive system of the fertilizer application device 2 by the shift member 74 on one side thereof via the linkage link 76. It is connected to a shift member 72 for operation.

As a result, a pair of three shift members 72 for operating the small number of clutches 70 provided in the drive system of the fertilizer application device 2 and three shift members 74 present on the input transmission shaft 67 of the seeding device 3 are provided. Are connected by three linkage links 76, respectively, and can be selectively operated by operating the three operating levers 73.
Therefore, if any one of the three operating levers 73 is cut and operated, the corresponding small number of the three shift members 72 for operating the small number of clutches 70 provided in the drive system of the fertilizer application apparatus 2. The strip clutch 70 is disengaged. At this time, the corresponding minority clutch 70 cuts off the power transmission to one fertilizer feed shaft 65, and the two fertilizer feed portions 21 are stopped.

Further, the fertilizers at two locations where the pair of shift members 74 on the sowing apparatus 3 side linked to the shift member 72 linked to the cut operation lever 73 and the linkage link 76 are also operated on the cut side and stopped. The two minority clutches 71 at the locations corresponding to the feeding section 21 are operated to stop the operation of the two seed vat feeding sections 31 of the seeding device 3.
In this way, in conjunction with the operation of the single operating lever 73 that has been cut, one minority clutch 70 on the fertilizer application 2 side connected to the operating lever 73 and the minority clutch 70 are linked. The link 76 and the two minority clutches 71 on the side of the seeding device 3 that are interlocked and connected via the linkage rod 75 are configured to be disconnected.

[Other Embodiment 1]
In the embodiment, the power transmitted to the power input shaft 60 of the power transmission mechanism 6 is branched and transmitted from the gear case 61 provided at the central portion in the left-right direction of the work device assembly A toward both left and right sides. Although one branch transmission shaft 62 that is long in the left-right direction is used, the structure is not limited to the above.
For example, as shown in FIG. 11, a branch transmission shaft 62 extending from the gear case 61 provided at the center in the left-right direction of the work device assembly A to the left and right sides is divided into a right branch shaft portion 62R and a left branch shaft portion. As a structure in which 62L is configured as a separate shaft, input bevel gears 62a and 62a are respectively provided at an end portion in the gear case 61 of the right branch shaft portion 62R and an end portion in the gear case 61 of the left branch shaft portion 62L. It may be provided so that power is transmitted separately from the bevel gear 60a of the power input shaft 60.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the embodiment, the structure using the gear case 61 as the branch portion of the power transmission mechanism 6 is exemplified, but the present invention is not limited to this, and an arbitrary branch structure may be adopted as appropriate.
Further, the position at which the branch portion such as the gear case 61 is provided is not limited to the center position in the left-right direction of the work device assembly A, and may be a position slightly shifted in the left-right direction. What is necessary is just an intermediate part instead of the position near the end in the direction.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
As shown in FIG. 12, when a work apparatus assembly A having a structure that is long in the lateral width direction, such as for 10 strips, is employed, the branch transmission shaft 62 and the driven input transmission shaft 67 are interlocked. The rotation transmission mechanism 66 that is a mechanism is configured to be detachable from the branch transmission shaft 62 and the input transmission shaft 67, and the entire rotation transmission mechanism 66 is removed from the branch transmission shaft 62 and the input transmission shaft 67. You may comprise so that it can do.
Thus, by constituting so that the whole rotation transmission mechanism 66 can be removed, the horizontal width direction of the working device assembly A is shortened so that it can be easily mounted on a vehicle for transportation, or a storage space. Can be reduced.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In embodiment, although the thing of the structure where the fertilizer application apparatus 2, the seeding apparatus 3, and the chemical | medical agent spraying apparatus 4 were combined was illustrated as a granular material spraying apparatus, it is not restricted to such a structure.
For example, a combination of a fertilizer application device 2 and a drug spraying device 4, a combination of a seeding device 3 and a drug spraying device 4, or a plurality of types of drugs configured to transmit a driving force from the engine 14 on the traveling machine body 1 side. An appropriate combination structure of the granular material spraying devices such as a combination of the spraying devices 4 can be adopted.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the embodiment, the drive system of the fertilizer application device 2 is provided with three minority clutches 70, and the drive system of the seeding device 3 is provided with six minority clutches 71. It is not limited.
That is, six small number of clutches 70 are provided in the drive system of the fertilizer application device 2, and three minority clutches 71 are provided in the drive system of the seeding device 3, or the drive system of the fertilizer device 2 and the drive system of the seeding device 3 are provided. In either case, the same three or six minority clutches 70 and 71 may be provided.
In addition, the small number of clutches 70 and 71 provided in the drive system of the fertilizer application device 2 and the drive system of the seeding device 3 are not limited to those that are turned on and off in pairs. You may comprise so that it can operate with one operation lever 73 for each one of the small number of clutches 71 of the seeding device 3 as a pair.
Further, the linkage between the minority clutch 70 of the fertilizer application 2 and the minority clutch 71 of the sowing apparatus 3 is not limited to the linkage link 76, and an operation wire may be used.

[Comparative Example]
In FIG. 13, a transmission shaft 80 is extended from a gear case 61 provided at a central portion in the left-right direction of the working device assembly A toward an end portion on only one side in the left-right direction. The driving force is branched from the end portion of the fertilizer to the fertilizer equipment 2 via the interlocking mechanism using the lever crank mechanism 63, and the driving force is branched to the seeding device 3 via the interlocking mechanism 66 using the rotation transmission mechanism 66. ing.
When the branch structure configured in this way is employed, both the fertilizer application device 2 and the seeding device 3 are driven by the transmission shaft 80 extending from the gear case 61 toward one side in the left-right direction. The drive load of this works. For this reason, as the transmission shaft 80, a large and heavy shaft corresponding to the driving loads of both the fertilizer application device 2 and the seeding device 3 is required, and the support structure is also likely to be a large scale with high strength. There is a tendency to increase weight.
Compared with such a structure, the present invention is advantageous in that the branch transmission shaft 62 and its supporting structure can be easily reduced in weight.
Other configurations may be the same as those in the above-described embodiment.

  In addition to working machines such as a direct seeding machine having a working device assembly A provided with a 6-powder powder dispersion device, the present invention includes a working device assembly A provided with a 5-powder or less powdering device. The working machine which has the working device aggregate | assembly A provided with the working machine which has, or 8 or more granular material spreading | diffusion apparatuses may be sufficient.

1 Traveling machine body 2 Granules spraying device (fertilizing device)
3 Powder spraying device (seeding device)
6 Power transmission mechanism 51, 53 1st horizontally long support member 52 2nd horizontally long support member 57 connecting member 61 power branching portion 62 branch transmission shaft 62c crank arm 63 interlocking mechanism (lever crank mechanism)
63a Drive rod 63b Oscillating arm 63d Feeding amount adjusting operation tool (engaging part)
64, 67 Input transmission shaft 66 Interlocking mechanism (rotational transmission mechanism)
66a Transmission chain 66b Transmission case 69a Operation amount adjustment tool (operation handle)
70 Minority Clutch 71 Minority Clutch A Work Equipment Assembly

Claims (7)

A working device assembly that is capable of rolling around a rolling axis along the front-rear direction and a lifting operation through a lifting mechanism is connected to the rear part of the traveling machine body,
The working device assembly has a plurality of powder spraying devices capable of spraying powder on the field over the entire width of the spray target range in the left-right direction, and a driving force for the plurality of powder spraying devices. A power transmission mechanism for transmitting,
The plurality of granular material spraying devices are distributed and arranged on the front side and the rear side in the traveling direction of the traveling machine body, and in the middle of the power transmission mechanism, A power branch for distributing the driving force to each of the rear granular material spraying device is provided, one end portion in the left-right direction of the front granular material spraying device, and the rear powder The power from the power transmission mechanism is branched and input to each of the other ends of the granular material spraying device, and the power branching portion is intermediate in the left-right direction of the working device assembly. Working machine provided in the department.   The branch transmission shaft extending in the left-right direction from the power branching portion is disposed between the front-side powder and particle-dispersing device in a plan view. Work machine.   The plurality of granular material spraying devices are provided with a feed amount adjusting operation tool for individually adjusting the feed amount of the powder material fed out from each powder particle spraying device, and each feed amount adjusting operation tool is The work machine according to claim 1 or 2, which is disposed at an end portion on the same one side in the left-right direction of the work device assembly.   Each feed amount adjustment operation tool is located closer to the center than the portion located on the outermost side in the left-right direction on the side where each feed amount adjustment operation tool is located, among the plurality of powder particle distribution devices. The working machine according to claim 3, wherein the working machine is provided. The power transmission mechanism includes a branch transmission shaft extending in the left-right direction from the power branch section, each input transmission shaft of the plurality of powder particle dispersion devices, and each branch transmission shaft to each input transmission shaft. It is configured with an interlocking mechanism that transmits power,
The interlock mechanism includes a crank arm that rotates in conjunction with rotation of a branch transmission shaft that transmits power to at least one of the plurality of powder particle distribution devices, and the one powder particle distribution device. A swing arm that transmits a rotational motion to an input transmission shaft of the apparatus; and a drive rod that connects the crank arm and the swing arm, and the rotational motion of the crank arm is a reciprocal swing motion of the swing arm. It is composed of a lever crank mechanism that drives the input transmission shaft by converting to
The working device assembly includes a first horizontally long supporting member arranged to support the branch transmission shaft along the longitudinal direction of the branch transmission shaft, and an input device along the longitudinal direction of the input transmission shaft. A second horizontally long supporting member arranged to support the transmission shaft is provided, and a connecting member extending between the first horizontally long supporting member and the second horizontally long supporting member is provided, and the connecting member includes the driving rod. The work machine according to any one of claims 1 to 4, wherein the work machine is disposed along an extending direction of the drive rod near a position where the drive rod is disposed.   A branch transmission extending in the left-right direction from the power branching portion at the end opposite to the end on the side where the interlocking mechanism constituted by the lever crank mechanism is provided in the left-right direction of the working device assembly. As an interlocking mechanism for interlocking the shaft and the input transmission shaft of the plurality of powder and particle dispersion devices, there is provided a rotational transmission mechanism by a transmission gear or a transmission chain incorporated in the transmission case, and this interlocking mechanism is the transmission case. 6. The work machine according to claim 5, wherein the working machine is configured to be attachable to and detachable from the branch transmission shaft and the input transmission shaft.   Each of the plurality of granular material spraying devices includes a small number of clutches capable of stopping the spraying of the granular material with respect to a part of the range to be sprayed in the left-right direction. The operation according to any one of claims 1 to 6, wherein the minority clutch of the other granular material spraying device is also operated in a similar manner in conjunction with the on / off operation of the minority number clutch of the device. Machine.

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