JP3656202B2 - Field work machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a field work machine used for, for example, leveling work in a farm scene, composting, dust fertilizer spraying work, transporting work of harvested products, farm work tools, etc., collecting work of straw scattered in a farm scene.
[0002]
[Prior art]
Conventionally, as this type of field work machine, those disclosed in Japanese Patent Publication No. 59-3607, Japanese Utility Model Publication No. 61-45245, Japanese Utility Model Publication No. 56-55327, Japanese Patent Publication No. 63-20969, and the like are known.
[0003]
In this conventional structure, a mounting portion is connected to the traveling machine body, and a working portion including a carriage is provided on the mounting portion so as to be able to tilt backward, and a locking portion and a locking portion are provided between the mounting portion and the working portion. A releasable locking mechanism made of a member is provided, and a plow body is attached to the attachment portion in a front-down manner.
[0004]
Therefore, for example, carrying work with a harvested product or agricultural equipment mounted on the working unit, or moving the traveling machine forward while holding the plow in a forward and downward manner, and plowing the soil at high places in the agricultural scene. Scraped off by the body, guided and introduced the scraped soil into the working part by the plowed body, moved the traveling machine body to a low place in the farm field, the worker artificially releases the locking mechanism at that position, and the working part has its own weight In this case, the soil in the working unit is discharged to a low place in the farm scene, thereby performing the leveling work on the farm field.
[0005]
[Problems to be solved by the invention]
However, in the case of the above-described conventional structure, during the tilting operation of the working part, the locking member is artificially pulled up and released, and an excessive force is required for the artificial operation because the locking load is large. Therefore, it is difficult to operate, and remote control in the vicinity of the driver's seat is difficult, and workability may be reduced.
[0006]
[Means for Solving the Problems]
The present invention aims to solve these disadvantages. Among the present inventions, the invention according to claim 1 is characterized in that a mounting portion is connected to the traveling machine body and a working portion is provided on the mounting portion so as to be tiltable. A releasable locking mechanism comprising a locking portion and a locking member is provided between the attachment portion and the working portion, and a rotatable releasing member for releasing the locking member; A release actuator for releasing and rotating the member, a restriction portion provided on the release member, and a correction member capable of elastically abutting against the restriction portion; , field working machine, characterized in that the release member configured by providing a safety mechanism that can hold in place.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 to 10 show an embodiment of the present invention, FIGS. 1 to 7 show a first embodiment, FIG. 8 shows a second embodiment, FIG. 9 shows a third embodiment, and FIG. 10 shows a fourth embodiment. It is an example.
[0008]
The first embodiment shown in FIGS. 1 to 7 is an application of the present invention to a field work machine used for leveling work and transport work. Reference numeral 1 denotes a traveling machine body. In this case, a tractor is used. A mounting portion 3 is connected to the rear portion by a connecting mechanism 2.
[0009]
The connecting mechanism 2 includes a lower link 4 projecting at the lower part of the left and right sides of the traveling machine body, a swing arm 5 projecting from the upper part of the left and right side parts of the travel machine body, and the middle part of the swing arm 5 and the lower link 4. And the upper link 7 projecting from the upper portion of the traveling machine body. The tip of the lower link 4 and the tip of the upper link 7 are connected to the mounting portion 3 by a connecting pin 8. The connecting portion 3 is configured to be movable up and down by a swing arm 5 that swings by hydraulic pressure.
[0010]
Reference numeral 9 denotes a plow body, the attachment portion 3 is formed in an L shape in a side view and formed into a square frame shape in a rear view, and the plow body 9 is lowered forward by a support shaft 10 between left and right vertical rods 3a of the attachment portion 3. A stopper portion 11 is formed on the back surface of the mounting body 9 and a stopper body 12 is provided on the lower surface of the horizontal rod 3b of the mounting portion 3 so that the sliding body 9 is held in a forwardly lowered state and supported by a lifting / retracting mechanism (not shown). The plow body 9 is configured to be pivotable about the shaft 10.
[0011]
Reference numeral 13 denotes a working unit. In this case, the working unit 13 is a carriage, and is formed by standing up and down the left and right side plates 15, the front plate 16, and the rear plate 17 on the four sides of the rectangular bottom plate 14. A soil introduction port portion 18 is formed at a position facing the plow body 9.
[0012]
Further, a reinforcing rod 19 is attached to the bottom plate 14 of the working portion 13, the rear portion of the horizontal rod 3b is pivotally attached to the reinforcing rod 19 by a fulcrum shaft 20, and the working portion 13 as a carriage can be tilted rearward around the fulcrum shaft 20. It is installed.
[0013]
21 is a locking mechanism, and 22 is a safety mechanism. In this case, a horizontal bar 13b is attached between the upper parts of the vertical bar 13a of the working unit 13, and two support pieces 23 are arranged in parallel at the center of the upper surface of the horizontal bar 13b. A pin-shaped locking portion 24 is installed between the support pieces 23, while a support piece 25 is attached in parallel to a horizontal rod 3c provided between the vertical rods 3b, and a fulcrum pin 26 is installed between the support pieces 25. The locking member 27 is pivotally attached to the fulcrum pin 26, and a stopper portion 27 a that can contact the upper surface of the horizontal bar 3 c is formed at the base end portion of the locking member 27 and the distal end of the locking member 27. A hook-shaped part 27b that can be hooked and locked to the locking part 24 is formed on the part, and the tip of the locking member 27 can be elastically pulled downward between the locking member 27 and the horizontal hook 3c. A spring 28 is suspended, and a lock rod 29 is inserted into the locking member 27 so as to be rotatable and slidable. An insertion hole 30 through which the tip end of the collar 29 is inserted and locked is formed in one locking piece 23, and an insertion hole 31 through which the tip of the lock collar 29 is inserted and locked is also formed in the locking member 27. When not in use or the like, the lock spring 32 is inserted into and held in the insertion hole 30 by the lock spring 32 to prevent the locking member 27 from swinging upward around the fulcrum pin 26 and during operation. For example, when the lock rod 29 is removed from the insertion hole 30 and the lock rod 29 is rotated and removed and inserted into the insertion hole 31, the locking member 27 can swing upward about the fulcrum pin 26. The operation lever 33 protrudes from the locking member 27.
[0014]
Thus, in a state in which the locking member 27 is swingable, the hook-shaped portion 27b of the locking member 27 is detached from the locking portion 24 by swinging the locking member 27 upward about the fulcrum pin 26, As a result, the working unit 13 as a carriage is tilted backward by its own weight about the fulcrum shaft 20, and when the working unit 13 is erected from the tilted state, the locking unit 24 becomes the hook-shaped portion 27 b of the locking member 27. As a result, the rearward tilting of its own weight around the fulcrum shaft 20 of the working unit 13 is prevented.
[0015]
Further, in this case, a mounting plate 34 is erected on the horizontal bar 3c, a release actuator 35 as a motor in this case is installed on the mounting plate 34, and a disc-shaped release member 36 is provided on the main shaft 35a of the release actuator 35. A lifting roll 37 is provided horizontally on the attachment / release member 36, and a pressing plate 38 that is pressed upward by the rotation of the lifting roll 37 by the rotation of the release actuator 35 is formed on the locking member 27. In addition, an operation switch 39 for rotating and stopping the release actuator 36 is arranged in the vicinity of the driver's seat, the release actuator 35 is rotated by a push operation of the operation switch 39, and the turn is stopped by stopping the push operation. The locking member 27 is lifted upward by this rotation, so that the hook-like portion 27b and the locking portion 24 of the locking member 27 are detached and the locking is released. It is configured to.
[0016]
Further, a setting portion 36 a is formed on the release member 36, a correction member 41 is slidably provided on the mounting plate 34 by a guide plate 40, and a spring hook pin 42 is protruded from the base end portion of the correction member 41 to be spring-loaded. A diameter of the correction member 41 is provided between the pin 42 and the mounting plate 34 so that the tip of the correction member 41 can be pressed against the setting portion 36 a, and the protrusion limit of the correction member 41 is formed at the base end of the correction member 41. The large stopper portion 41a and the rear end portion of the guide plate 40 are restricted and configured.
[0017]
Since the first embodiment of the present embodiment has the above-described configuration, a harvested product or an agricultural machine is mounted on the working unit 13 as a carriage, and if necessary, the locking mechanism 21 is released to tilt the working unit 13 backward. It is possible to carry out various transporting and discharging operations, and when the traveling body 1 is moved forward while holding the plow 9 in a forward and downward manner, the soil at a high place in the farm scene is scraped off by the plow 9. The soil is introduced and guided into the working unit 13 by the plowing body 9, and the traveling machine body 1 is moved to a low place in the field, the locking mechanism 21 is released and the working unit 13 is tilted backward by its own weight. The soil in the section 13 is discharged to a low place in the farm scene, thereby performing the leveling work on the farm field.
[0018]
At this time, when the release actuator 35 is driven by pushing the operation switch 36 in the locked state shown in FIGS. 4 and 6, the release member 36 is rotated clockwise, and the lifting roll is rotated by this rotation. 37 abuts on the pressing plate 38 at the position of the imaginary line in FIG. 6, and further pushing up of the pressing plate 38 is completed at the imaginary line ahead of the next rotation direction. Therefore, as shown in FIG. 7, the locking member 27 rotates upward about the fulcrum pin 26, whereby the hook-shaped portion 27b is detached from the locking portion 24, and the locking mechanism 21 is automatically operated. The release causes the working unit 13 to tilt backward with its own weight about the fulcrum shaft 20. When the operation switch 36 is stopped, the release actuator 35 stops driving, and as shown in FIGS. 4 and 6, the pressing plate 38. The lifting roll 37 is in front of The release member 36 stops at the stand-by position in which it is placed. In this state, when the working portion 13 is raised from the tilted state, the locking portion 24 is locked to the hook-shaped portion 27b of the locking member 27. This prevents backward tilting of the working unit 13 around the fulcrum shaft 20, and the safety mechanism 22 can hold the release member 36 in a fixed position. The locking state with the portion 24 can be made stable, and the locking and unlocking operations of the locking mechanism 21 can be easily performed, and the safety can be improved.
[0019]
Further, when the release member 36 is rotated, the correction member 41 is pushed backward against the spring 42 by the setting portion 36a, and the setting portion 36a is detached from the correction member 41 during the rotation, and the spring for pressing. 42, the correction member 41 protrudes forward, and is stopped and held at the protrusion advance position by contact between the large diameter stopper portion 41a and the rear end portion of the guide plate 40, and when the release member 36 completes one rotation, as shown in FIG. The setting portion 36a comes into contact with the correction member 41 and stops at a fixed standby position. At this time, the release member 36 overrotates against the spring 42 due to the inertia of the release actuator 35. Even so, the correction member 41 pushes back the setting portion 36a, and as shown in FIG. 6, the release member 36 is held in a fixed position. Therefore, the correction member 41 erroneously over-rotates and pushes the pressing plate 38 by the lifting roll 37. Locking part The locking state between the 27 and the locking portion 24 can be prevented to unstable, therefore, can be performed safely locking and tilting of the working unit 13.
[0020]
The second embodiment shown in FIG. 8 is applied to a field work machine used for powdered fertilizer spraying work. The same reference numerals are given to the same mode portions as the first embodiment, and in this case, A plurality of fertilizer spray holes 13c are formed in the working part 13 as a carriage in one embodiment in the left-right direction, and the working part 13 is inclined and arranged in a front-lowering manner by the connecting mechanism 2, and the working part 13 A vibration mechanism 43 composed of an eccentric rotation weight is provided, and the eccentric rotation weight is unbalanced and rotated by the power take-off shaft 45 via the universal joint 44 to vibrate the working unit 13. A powdery fertilizer is mounted, and the fertilizer is applied to the field scene from the fertilizer application hole 13c.
[0021]
Further, the third embodiment in FIG. 9 is applied to a field work machine having another structure used for leveling work and transportation work. In this case, the working portion 13 is formed in a triangular bucket shape, and both side surfaces of the working portion 13 are pivotally attached to the left and right horizontal rods 3b by the fulcrum shaft 20 so that the working portion 13 can be tilted backward about the fulcrum shaft 20. In addition, a mounting rod 46 is installed at the rear of the left and right horizontal rods 3b, and a plow body 9 is mounted on the mounting rod 46, so that the field leveling operation is performed in the same manner as in the first embodiment.
[0022]
The fourth embodiment shown in FIG. 10 is applied to a field work machine used for collecting the straw scattered in the field, and the same reference numerals are given to the same portions as the first embodiment. In this case, the working unit 13 is composed of scooping rods 13d arranged in parallel with the support frame 47 in the left-right direction, and the support frame 47 of the working unit 13 is pivotally attached to the horizontal rod 3b by the fulcrum shaft 20, thereby 13 is provided so as to be tiltable backward about the fulcrum shaft 20, and the collection operation of the ridges is performed by the cradle 13d in the same manner as in the first embodiment.
[0023]
In these second to fourth embodiment examples, the same effect as the first embodiment can be obtained by the presence of the safety mechanism 22.
[0024]
Note that the present invention is not limited to the above-described embodiment, and the structure of the locking mechanism 21 and the safety mechanism 22 including the locking member 27 and the locking portion 24 is appropriately modified and designed for release. The actuator 35 is not limited to an electric drive motor, but may be a hydraulic motor or an electric rotary solenoid structure. The actuator 35 is not limited to the working unit 13 and may be applied to other field work machines. In the above-described embodiment, the working unit 13 is disposed behind the traveling machine body 1. However, the working unit 13 is disposed in front of the traveling machine body 1 by a connection mechanism that is provided in front of the traveling machine body 1 or is separately configured. It can also be applied to a structure in which the working unit 13 is arranged on the side. In this case, the working unit 13 may be tilted forward, and the release operation of the release member is released by a release actuator. Although a structure for releasing operation by rotating the timber, using a link mechanism or the like, may have a structure for releasing operation by the reciprocating movement or the like other than rotating the releasing member.
[0025]
【The invention's effect】
As described above, according to the first aspect of the present invention, the release member causes the release member to release the release member by performing the release rotation operation of the release member by the release actuator. The working part can be tilted by the automatic release of this, the workability can be improved by that , and the safety mechanism is composed of a regulating part provided on the releasing member and a correction member capable of elastically contacting the regulating part. Since the release member can be corrected for inertia over-rotation and can be held in a fixed position, if the release member over-rotates due to the inertia of the release actuator, the correction member Pushes back the restricting part provided on the release member and holds it in place, so that the locking state between the locking member and the locking part can be stabilized, and the locking and tilting of the working part is safe Can be done in That.
[0026]
As described above, the intended purpose can be sufficiently achieved.
[Brief description of the drawings]
FIG. 1 is an overall side view of a first embodiment of the present invention.
FIG. 2 is a partially enlarged side view of the first embodiment of the present invention.
FIG. 3 is a partial plan sectional view of a first embodiment of the present invention.
FIG. 4 is a partial side sectional view of a first embodiment of the present invention.
FIG. 5 is a partial lateral view of the first embodiment of the present invention.
FIG. 6 is a partial side sectional view of a first embodiment of the present invention.
FIG. 7 is a partial sectional side view of a first embodiment of the present invention.
FIG. 8 is a partial side view of a second embodiment of the present invention.
FIG. 9 is a partial side view of a third embodiment of the present invention.
FIG. 10 is a partial side view of a fourth embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 3 Mounting part 13 Working part 21 Locking mechanism 22 Safety mechanism 24 Locking part 27 Locking member 35 Release actuator 36 Release member
36a regulation part 41 Correction member

Claims (1)

A mounting part is connected to the traveling machine body, a working part is provided on the mounting part so as to be tiltable, and a releasable locking mechanism including a locking part and a locking member is provided between the mounting part and the working part. becomes, the rotatable release member for releasing operating the locking member, the release member and release actuator for releasing rotational motion repression contactable to the regulating unit and the regulating unit provided on the release member An agricultural field work machine comprising a safety member that is made of a straightening member and is capable of correcting inertial overturning of the release member and capable of holding the release member in place.

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