JP2010246408A - Travel working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a travel working machine which ensures safety by making a work for attaching a working machine to a travel vehicle body not proceed when steps for the attaching are steadily not performed, one by one for attaching or detaching the working machine to the travel vehicle body. <P>SOLUTION: The working machine-attaching or detaching device of the travel working machine is characterized by disposing a controller for controlling the traveling of the travel vehicle body and the connection of the travel vehicle body to the working machine, and disposing a docking-releasing mode for enabling the moving travel of the travel vehicle body by attaching a stand for supporting the machine frame to the working machine, in the controller. When the working machine is thus detached from the travel vehicle body, the stand is attached to the working machine in the docking-releasing mode of the controller, thereby enabling the travel vehicle body to be detached from the connection portion of the working machine. After the connection portion is detached, the travel vehicle body is forward moved to separate the working machine from the travel vehicle body, and the working machine is supported on the stand. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a work machine attaching / detaching device that enables a work machine to be safely attached to and detached from a traveling vehicle body in a traveling work machine such as a tractor or a seedling transplanter.

  The traveling working machine is detachably mounted with various working machines at the rear of the traveling vehicle body. For example, a rotary cultivator is attached to and detached from a tractor, and a seedling planting device and a direct sowing device are detachably attached to a traveling vehicle body of a seedling transplanter.

  When mounting the work machine on the traveling vehicle body, for example, Japanese Patent Application Laid-Open No. 2008-283941 provides guidance and notification of the work machine attachment / detachment work order step by step to the worker, thereby ensuring safety of the attachment / detachment work. Techniques for achieving this are described.

JP 2008-283941 A

  Specifically, the voice guidance notification technology when the work implement is mounted on the traveling work machine described above is provided with a voice guidance button, and every time the voice guidance button is pressed, one step of the mounting work is guided by voice. However, the work implement can be attached and detached without pressing the voice guidance button. For this reason, workers accustomed to the work may carry out the work and cause serious personal injury.

  Therefore, in the present invention, when attaching a work machine to a traveling vehicle body, it is an object to ensure the safety of attaching and detaching the work machine by preventing the work from proceeding unless each attachment procedure is steadily performed.

The problems of the present invention are solved by the following technical means.
According to the first aspect of the present invention, the control body 7 for controlling the travel of the traveling vehicle body 2 is provided, and the traveling body 2 can be moved by attaching a stand 88 for supporting the machine body to the work machine 1 in the control device 7. A traveling work machine provided with a docking release mode.

  With this configuration, when the work implement 1 is removed from the traveling vehicle body 2, the connecting portion between the traveling vehicle body 2 and the work implement 1 can be removed by setting the control device 7 in the docking release mode and attaching the stand 88 to the work implement 1. Thus, after the connecting portion is removed, the traveling vehicle body 2 is advanced to separate the work machine 1 from the traveling vehicle body 2, and the work machine 1 is supported by the stand 88.

  Since the traveling vehicle body 2 moves after the stand 88 is attached to the work machine 1 and the work machine 1 becomes self-supporting, the work machine 1 may fall down in an unstable state and may be damaged, and there is a danger to workers and those around. The working machine 1 can be safely removed without any damage.

It is the whole side view which attached the direct seeding machine to the traveling body of one example of the present invention. It is the whole side view which attached a seedling planting device to a running body. It is a partial expanded side view which shows a connection part with the traveling vehicle body of a direct seeding machine. It is a partial expanded side view of a direct seeding machine. It is a rear view which shows the attachment / detachment hitch part of a direct seeding machine. It is a partial expanded side view which shows the stand attachment state of a direct seeding machine. It is a top view of a center float and a side float. It is a control block diagram. It is a control flowchart figure.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The traveling working machine of the present embodiment is a direct sowing machine of a riding four-wheel drive traveling form, and FIG. 1 shows a left side view of a riding direct sowing machine with a fertilizer application device. This riding type traveling working machine 1 traveling work machine 1 has a direct sowing device 82 mounted on the rear side of traveling vehicle body 2 via lifting link device 3 so as to be movable up and down, and a body portion of fertilizer application device 5 is provided on the rear upper side of traveling vehicle body 2.

  FIG. 2 shows an overall side view of the traveling work machine 1 in which the seedling planting device 4 is attached to the rear portion of the traveling vehicle body 2 via the lifting link device 3 in place of the direct sowing device 82, and FIG. The enlarged side view of is shown.

In the present specification, the left and right directions in the forward direction of the traveling work machine 1 are left and right, respectively, the forward direction is forward, and the reverse direction is rear.
The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed in the front part of the airframe. A front wheel final case (not shown) is provided on the left and right sides of the front wheel, and the front wheels 10 and 10 are attached to a front wheel axle that protrudes outward from a front wheel support portion that can change the steering direction of the front wheel final case. Yes.

  Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel rolling shaft (not shown) provided horizontally in the front and rear is provided at the rear left and right center of the main frame 15 as a fulcrum. The rear wheel gear cases 18 and 18 are supported in a freely rolling manner, and the rear wheels 11 and 11 are attached to a rear wheel axle that protrudes outward from the rear wheel gear cases 18 and 18.

  The engine 20 as a prime mover is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the hydrostatic transmission (HST) and the mission in the transmission case 12 via the first belt transmission device 21. Is done. The rotational power transmitted to the mission in the mission case 12 is shifted and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final case (not shown) to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. . Further, the external take-out power is transmitted to the planting clutch case 25 provided at the rear portion of the traveling vehicle body 2 via the counter shaft 26 and transmitted to the fertilizer application device 5 by a fertilizer transmission mechanism (not shown).

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A bonnet 32 incorporating various operation mechanisms such as the main transmission lever 17 and the docking release switch 6 is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the bonnet 32. The engine cover 30 and the bonnet 32 have horizontal floor steps 35 on the left and right sides of the lower end.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and the leading end side is connected by a vertical link 43. Yes.

  A lifting hydraulic cylinder 46 is provided between a support member (not shown) fixed to the main frame 15 and the tip of a swing arm 45 formed integrally with the upper link 40. The lifting hydraulic cylinder 46 is hydraulically operated. By expanding and contracting, the upper link 40 is rotated up and down, and the direct seeding device 82 is lifted and lowered in a constant posture.

  At the lower part of the direct seeding device 82, a center float 55 at the center of the left and right and side floats 56, 56 at the left and right sides are provided. When the aircraft is advanced with the center float 55 and the side float 56 in contact with the mud surface of the field, the center float 55 and the side float 56 slide while leveling the mud surface, and the direct sowing device 82 is applied to the leveling trace. Seeds.

  Each center float 55 and side float 56 are rotatably mounted so that the front end side moves up and down according to the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 55 is detected during the direct sowing operation. The seed sowing depth is always maintained constant by moving the direct sowing device 82 up and down by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result detected by a mechanism (not shown).

  The fertilizer applicator 5 feeds the fertilizer (powder particles) stored in the fertilizer storage tank 60 by a fixed amount by a plurality of fertilizer feed sections 61,... Provided in the left-right direction of the traveling vehicle body 2, and fertilizes the fertilizer. A fertilizer guide 64 (not shown) attached to the left and right sides of the float 55 with a hose (not shown),... ,... Are discharged into a fertilizer structure formed near the side of the sowing line. Pressure air generated by a blower (not shown) driven by a motor (not shown) is blown into the fertilizer hose via a long air chamber in the left-right direction, and fertilizer in the fertilizer hose is removed. It is forcibly transferred to the fertilizer outlet on the planting part side.

Further, leveling rotors 27a and 27b for leveling are provided in front of the center float 55 and the side float 56.
As shown in FIG. 3, the leveling rotors 27 a and 27 b are supported by a rotor lifting link 66 provided in a detachable hitch 65 detachably attached to the vertical link 43. The rotor elevating link 66 is rotatably attached to a rotor frame 76 extending in the lateral direction of the fuselage at the center of the “<” shape member 67 on the side surface of the base of the detachable hitch 65, and is attached to the upper end portion of the “<” shape member 67. An upper link 68 is connected to one end so as to be rotatable, and a lower link 69 is connected to the lower end group of the “<” shaped member 67 so that the − end can be turned freely. A rod 71 connected to the arm 70 on the rotor lifting / lowering lever 81 side is connected to the central portion of the upstream link 68, and the other end of the lower link 69 is rotated to an intermediate portion of the rotor support frame 73 facing the vertical direction. Are fully connected.

One end of a short arm 74 is rotatably connected to the upper end of the rotor support frame 73, and the other end of the short arm 74 is rotatably connected to one end of the upper link 68.
A drive shaft (not shown) of the leveling rotor 27 a is attached to the lower end of the rotor support frame 73, and the power from the rear wheel transmission case 18 is transmitted to the drive shaft via the transmission shaft 78. The rotor 27b disposed in front of the center float 55 at the center of the body width is disposed in front of the rotor 27a in front of the side floats 56 on both sides of the body through a transmission case 58 containing a transmission member. To the drive system of the rotor 27b.

  In the leveling rotor raising / lowering mechanism having the above-described configuration, when the rotor raising / lowering lever 81 is pulled, each end of the upper link 68 and the lower link 69 is centered on the rotor frame 76 which is the rotation center axis of the “<” shape member 67. The ground leveling rotors 27a and 27b rise together with the rotor support frame 73.

Adjustment of the vertical position of the leveling rotors 27 a and 27 b can be moved up and down by the rotor lifting lever 81.
On the front side of the side float 56, there is provided a hardness sensor 39 for determining the hardness of the field by the vertical movement of the grounding wheel 36, and the control device 7 performs control so as to slow down the traveling speed of the traveling vehicle body 2 when the field is firm. Then, the vertical position of the work machine 1 is controlled to be lower than usual.

It is also possible to provide a weed stalk 79 for separating rice stubs and stubs into left and right and a stubble collecting device for recovery so as not to obstruct the seedling planting tool 53 on the rear side of the leveling rotors 27a and 27b. I can do it.
When the vertical link 43 having the leveling rotors 27a and 27b is attached to the attachment / detachment hitch 65 so as to prevent the hitch 65 from being detached from the vertical link 43 when the attachment / detachment hitch 65 is attached, As shown in the side view of FIG. 4, the pair of lock members 38 rotatably supported by the transmission case 29 with one end portion as a rotation fulcrum are engaged with the attachment / detachment hitch 65 around the rotation fulcrum from the attachment / detachment hitch 65. If it is configured to be engaged with the projection 65a, the mounting space for the center float 55 and the soft / soft sensor 39 can be secured when the detachable hitch 65 is mounted.

An elevation angle sensor 44 that detects the elevation angle of the center float 55 is provided in the transmission case 29 located above the tip of the center float 55.
The locking member 38 is manually engaged with and released from the detachable hitch 65 by a lock lever 49 for operating the locking member 38 shown in FIG. For safety reasons, it should not be released for safety reasons. Further, when the elevating hydraulic cylinder 46 is raised or lowered, the movement of the lock member 38 is locked by the pin solenoid 8 (FIG. 8) so that the lock lever 49 cannot be released.

  This lock lever 49 is located inside a seedling amount adjusting lever guide 54 that adjusts the amount of seedlings to be scraped off from a seedling mat (not shown) on the seedling mount 51 with a claw at the tip of the seedling planting tool 53. Thus, the rotor frame 76 is disposed outside the stage 57 of a rolling cylinder (not shown) for rolling.

  The direct sowing apparatus 82 includes a seed feeding portion 87 that feeds seeds from an upper seed tank 85, a discharge cylinder 90 that discharges seeds fed from the seed feeding portion 87 by air conveyance, a seeding port 91, and the like, and is It is supported by a frame 89 extending in the direction. The seeds are planted in the field by air supplied from the blower 86 to the discharge cylinder 90.

  When the direct sowing apparatus 82 of the present embodiment is used, the air supplied from the blower 86 is directed in the vertical direction from the upper side to the lower side in the sowing port 91, and the seed flow is controlled by an air flow for ensuring the seed sowing depth. Seeds can be driven into the soil with an accelerated flow velocity.

  Below the direct sowing device 82, there are arranged center floats 55 that are suspended below the sowing frame 33 (see FIG. 1) and that touch the soil surface and slide. Since there is provided a sowing groover 64 that is switched between active and inactive by the grooved vertical solenoid 23 and a pair of soil covering plates 59 that fill the groove of the field made by this sowing groover 64, The seeds placed in can be covered with soil by a cover plate 59.

The cover plate 59 is connected to the cover plate operating motor 37 by a link 75 and a wire 62 so that the cover plate can be switched between a cover operation position and a non-operation position, and the cover plate is switched by a control signal from the cover plate on / off switch 19 and the control device 7. When the plate operating motor 36 is operated to make the direct sowing device 82 slightly higher than the standard height or when sowing the iron powder coated soot, the covering plate 59 is switched to the non-covering position. (See Figure 7)
The direct seeding device 82 can be rolled in the left-right direction of the machine body in accordance with the farm scene by a rolling shaft 96 in FIG.

  Further, as shown in FIG. 2, the seedling planting device 4 can be mounted while being supported by the support frame 47. When the seedling planting device 4 is provided, the direct sowing device 82 is removed. When the detachable hitch 65 of the direct seeding device 82 is removed from the vertical link 43 and the seedling planting device 4 for rice planting shown in FIG. 2 is attached, the direct seeding device can be used as a rice transplanter.

  As shown in FIG. 2, the seedling planting device 4 of the present embodiment has a six-row planting structure, and includes a transmission case 50 that also serves as a frame. In addition, a seedling planting device 52 for planting seedlings supplied to a seedling outlet (not shown) of the seedling stage 51 and a pair of left and right drawing markers for drawing the course of the aircraft in the next stroke to the topsoil surface ( (Not shown).

  Floats 55 will be provided at the center and lower left and right sides of the seedling planting device 4. When the aircraft is advanced with these floats 55 in contact with the mud surface of the field, -The ground 55 slides while leveling the muddy surface, and seedlings are planted by the seedling planting device 52 on the leveling site.

  Each of the floats 55 is rotatably attached so that the front end side thereof moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is an angle sensor when planting. The planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4 according to the detection result. .

  FIG. 6 shows a state in which a stand 88 used for connecting the seedling planting device 4 or the direct sowing device 82 to the rear portion of the traveling vehicle 2 or releasing the connection is attached to the body frame 97 of the direct sowing device 82. This stand 88 can also be used as a temporary support device for the seedling planting device 4 on the field. Wheels 98 are provided at the front lower portion of the stand 88, the direct sowing device 82 is lifted by the lifting link device 3 and is inserted into the lower side of the stand 88, the support column 94 is fitted to the support cylinder 95 of the body frame 97, and the stand sensor 99 is attached. Is detected.

  When the stand 88 is attached to the fuselage frame 97, a part of the stand 88 can sink under the rotor 27a. When the seedling planting device 4 or the direct seeding device 82 is connected to the traveling vehicle body 2, the stand 88 protects the rotor 27a. Play a role.

FIG. 8 is a control block diagram of the control device 7 that controls the traveling of the traveling vehicle body 2 and the elevation of the lifting hydraulic cylinder 46.
Signals that enter the control device 7 are input from the docking sensor 14 to the working vehicle 1 mounted on the traveling vehicle body 2, the lift position of the work implement 1 is input from the lift link sensor 16, and the work implement 1 is input from the dock release switch 6. A removal signal is input, and a signal indicating that the stand 88 is attached to the work machine 1 is input from the stand sensor 99.

  The control signal output from the control device 7 outputs the expansion / contraction switching and expansion / contraction speed of the lifting / lowering hydraulic cylinder 46 to the hydraulic lifting / lowering electromagnetic valve 13, and the operation restriction signal for the lock member 38 is output to the pin solenoid 8. 9 outputs a restriction signal to the travel position of the shift lever.

  Control by the control device 7 is performed as shown in FIG. That is, it is determined whether or not the docking release switch 6 is turned on in step S1, and if it is turned on, it is determined whether or not the stand 88 is attached in step S2, and if it is attached, the pin solenoid 8 is locked in step S3. Is released, and if the traveling operation is performed in step S4, the traveling vehicle body 2 can be traveled in step S5. If the docking release switch 6 is not turned on in step S1, the process proceeds to step S4. If the determination in step S2 or the determination in step S4 is NO, the process returns in a stopped state in step S6.

  Although the control flowchart is omitted, the extension position of the lift hydraulic cylinder 46 when the work implement 1 is attached to the detachable hitch 65 is stored in the control device 7 as a reference position, and the rising speed of the lift hydraulic cylinder 46 during work is stored. Control is performed to slow down the speed when raising from the reference position.

DESCRIPTION OF SYMBOLS 1 Working machine 2 Traveling vehicle body 7 Control apparatus 88 Stand

Claims (1)

  A control device (7) for controlling the traveling of the traveling vehicle body (2) is provided, and the traveling vehicle body (2) is moved by attaching a stand (88) for supporting the vehicle body to the work machine (1) in the control device (7). A traveling work machine with a docking release mode that enables traveling.

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