JP2004173586A - Offset turning structure of implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable one implement to be horizontally turned and moved at a turning-set position so as to be moved to the other operation position easily and smoothly by arbitrarily and continuously setting a moving distance (offset distance), when the implement is offset in the right and left directions and when the other implement is moved (offset) from one operation position to the other operation position side from one operation position for advance or retreat, and to enable the operation for moving (returning) the implement from the turning set position to the one operation position side. <P>SOLUTION: This offset turning structure has a hitch frame 2 to be attached to a traveling machine body, offset frames 4 and 5 pivotally supported by the hitch frame 2 so as to be offset in the right and left directions, and the implements 10 and 14 attached to the offset frames 4 and 5 so as to be turnable in the horizontal direction. The implements 10 and 14 can carry out the advance or retreat operations in a state in which either one of the 10 and 14 is offset in one of the right and left operation positions by the offset frames 4 and 5. Turning set positions enabling the implements 10 and 14 to be turned in the horizontal direction are formed in a middle positions of the movement of the implements 10 and 14 from the operation positions for advance or retreat to the other operation position side. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, when a work machine is offset left and right, a rotation setting position at which the work machine can be turned in a horizontal direction is provided at an intermediate portion moving from one work position to the other work position. The present invention relates to an offset / rotation mechanism of a machine.
[0002]
[Prior art]
Conventionally, a pretreatment body equipped with a tilling rotor that is mounted on a rear portion of a traveling body and receives power from the traveling body to cultivate a part of an original ridge and a field to cultivate the field into a ridge shape, and the pretreatment body A drum-shaped ridge that forms the ridge while rotating the cultivated soil is provided, the pretreatment body and the ridge are supported by one frame structure, and the pretreatment body and the ridge from one transmission frame. In the ridge coating machine adapted to transmit power to the body, the pre-treatment body and the ridge body can be turned 180 degrees in the horizontal direction through a link provided at the base of the transmission frame with the transmission frame as a center of rotation. In addition, the present applicant has proposed a ridge coating machine having an offset / rotation mechanism that supports the base side of the transmission frame with respect to the main body side frame via a parallel link so that the horizontal offset amount can be adjusted. ing( Patent reference 1).
[0003]
[Patent Document 1]
JP 2001-28903 A
[Problems to be solved by the invention]
In the above-mentioned ridge coating machine provided with an offset / rotation mechanism, the transmission frame that transmits power to the pretreatment body and the ridge body (working machine) is driven by the horizontal rotation center of the pretreatment body and the ridge body. Therefore, the strength of the transmission frame is required and the weight is heavy. In addition, during the offset work in which the pretreatment body and the ridge body are offset to the left and right, the pretreatment body and the ridge body can be horizontally rotated with respect to the transmission frame. If the pre-treatment body and the ridge are horizontally rotated by mistake while the body is offset left and right, the pre-treatment and the ridge may interfere with other members and be damaged. There were issues to be addressed. The present invention has been made to solve such a problem.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following features.
A. A hitch frame attached to the traveling body, an offset frame pivotally supported so as to be able to be offset in the left-right direction with respect to the hitch frame, and a working machine attached to the offset frame so as to be rotatable in a horizontal direction, While the work machine is offset to one of the left and right work positions by an offset frame, forward work or reverse work is enabled, and the work machine is moved from the forward or reverse work position to the other work position. A rotation setting position at which the work machine can rotate in the horizontal direction with respect to the offset frame is provided at the position.
B. An offset mechanism for offsetting the offset frame and the working machine to the left and right is interposed between the hitch frame and the offset frame, and the working machine is provided between the hitch frame and the working machine rotating guide member provided on the working machine. A rotation mechanism was interposed.
[0006]
C. The offset mechanism is provided with a switch mechanism for restricting operation of the work implement rotating mechanism.
D. The offset mechanism and the work implement rotating mechanism are provided with an offset frame and a safety mechanism that controls whether or not the work machine can be rotated by a signal generated by the offset operation of the work implement.
E. FIG. The work implement rotation guide member has a fulcrum axis at a position deviated from the work implement rotation axis, and provides a rotation guide function for rotating the work implement and an offset for offsetting the work implement. And a guide function.
[0007]
F. The work machine turning mechanism, the work machine turn guide member, and the lock link plate provided coaxially with the work machine turn guide perform horizontal turn and automatic lock / automatic release of the work machine. .
G. FIG. A buffer member is provided between the offset frame and the work machine for holding the thrust of the offset mechanism when rotating the offset frame and the work machine and for buffering the impact of the rotation of the offset frame and the work machine.
[0008]
[Action]
With the above configuration, the offset / rotation mechanism of the working machine of the present invention performs the following operations.
▲ 1 ▼. A. According to the configuration, by providing a rotation setting position at which the work machine can rotate in the horizontal direction with respect to the offset frame, at an intermediate portion where the work machine is moved from the forward or backward work position to the other work position side, When the working machine is moved (offset) from one of the forward or backward working positions to the other working position, the working machine is horizontally rotated at the rotation setting position and then easily moved to the other working position, and the moving amount is easily adjusted. (Offset amount) can be set arbitrarily and can be moved steplessly and smoothly. Further, the operation of moving (returning) from the rotation setting position to the one working position side can be easily performed.
▲ 2 ▼. B. In this configuration, the offset frame and the offset mechanism for offsetting the working machine to the left and right are interposed between the hitch frame and the offset frame, and work is performed between the hitch frame and the working machine rotating guide member provided on the working machine. By interposing the machine turning mechanism, the worker can easily perform the horizontal turning of the work machine and the offset moving operation to the forward or backward working position while riding on the traveling machine (tractor).
[0009]
(3). C. By providing a switch mechanism for restricting the operation of the work implement rotation mechanism in the offset mechanism, the work implement can be horizontally rotated only at the rotation setting position, and the work implement can be moved during the offset movement work. Can be prevented from interfering with other members caused when the is rotated horizontally.
▲ 4 ▼. D. By providing the offset mechanism and the work implement rotating mechanism with a safety mechanism that controls the rotatable / impossible by the offset frame and the signal generated by the offset operation of the work implement, the offset mechanism and the work implement turning mechanism can be used during the offset moving work of the work implement. A malfunction such as a horizontal rotation of the working machine can be avoided.
▲ 5 ▼. E. According to the configuration, the work implement rotation guide member has a fulcrum axis at a position deviated from the work implement rotation axis, and the work implement rotation guide function and the work implement are offset when the work implement is rotated. By having the offset guide function, the strength of the transmission frame of the work machine does not need to be increased, and the work machine can be smoothly horizontally rotated.
[0010]
▲ 6 ▼. F. With the configuration described above, the work implement can be moved forward or backward by performing horizontal rotation, automatic locking and automatic release of the work implement by the work implement rotating mechanism, the work implement rotating guide member, and the lock link plate. When the work machine is offset to the position, the lock is automatically performed, and the lock is automatically released by an operation of moving the work machine from the state of being offset to the forward or backward work position to another work position.
▲ 7 ▼. G. By providing a thrust holding mechanism of the offset mechanism between the offset frame and the working machine and a shock absorbing member for buffering the impact of the rotation of the offset frame and the working machine, the offset work and the horizontal rotating work of the working machine can be performed. It is done smoothly.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the offset / rotation mechanism according to the present invention is applied to a ridge coating machine as a working machine will be specifically described with reference to the accompanying drawings.
In FIG. 1 to FIG. 3, reference numeral 1 denotes a ridge coating machine which is connected to a three-point link connecting mechanism including a top link and a lower link provided at a rear portion of a tractor (not shown) to perform a levee work. This ridge coating machine 1 has a hitch frame 2 detachably attached to the three-point link connecting mechanism at a front portion, and an input projecting forward from a gear box 3 provided at the left and right central portions of the hitch frame 2. Power is transmitted to the shaft 3a from the PTO shaft of the tractor. Offset frames 4 and 5 composed of a pair of left and right parallel links are pivotally supported on the hitch frame 2 via pivot shafts 4a and 5a. The offset frame 4 also serves as a transmission frame, and transmits the power input to the gear box 3 to the pre-processing body 10 and the ridge body 14 which are working machines, which will be described later.
[0012]
A link frame 6 also serving as a transmission frame is pivotally attached to the distal ends of the offset frames 4 and 5 via pivot shafts 4b and 5b. One end side of the transmission frame 8 is rotatably supported in the horizontal direction coaxially with the pivot 4b downward from the link frame 6 via a rotation shaft 7 having a transmission mechanism therein. At the front end side of the transmission frame 8, a pretreatment body 10 composed of a tilling rotor is provided via a pretreatment body transmission case 9, and a polygonal conical drum 12 and a horizontal cylindrical body are provided via a regular ridge body transmission case 11. 13 are provided, respectively. The pre-processing body 10 and the ridge body 14 can be rotated 180 degrees counterclockwise from the state shown in FIG. In this state, the forward operation shown in FIG. 4 or the reverse operation shown in FIG. 6 is enabled.
[0013]
FIG. 1 shows the storage state in which the pretreatment body 10 and the ridge body 14 are in the forward working state and the ridge coating machine 1 is located behind the tractor, and the pretreatment body 10 and the ridge body 14 are connected by a three-point link connecting mechanism. It is possible to move forward or backward while lifting. FIG. 2 is an enlarged cross-sectional view taken along line AA of FIG. 1, and mainly shows a working machine rotating mechanism. FIG. 3 is an enlarged partial cross-sectional view along the line BB of FIG. 1, and mainly shows an offset mechanism and a switch mechanism. FIG. 4 is a plan view showing a state where the pretreatment body 10 and the ridge body 14 are in a forward working state and are maximally offset. FIG. 5 shows the storage state in which the pretreatment body 10 and the ridge body 14 are in the backward operation state and the ridge coating machine 1 is located behind the tractor. When the vehicle is lifted, the vehicle can move backward or forward. FIG. 6 is a plan view showing a state where the pretreatment body 10 and the ridge body 14 are in the backward operation state and are maximally offset.
[0014]
Between the hitch frame 2 and the offset frame 5, an offset electric cylinder 15 as an offset mechanism for offsetting the offset frames 4, 5, the pre-processing body 10, and the ridge 14 to the left and right is provided. The piston is mounted on the side with the tip of the piston facing the offset frame 5. Further, a work machine which is rotatably fitted to the hitch frame 2 and a support pin 16 protruding from the transmission frame 8 through a V-shaped elongated hole 17 so as to be rotatable and extends in a semicircular shape. An end of the piston of the working machine rotating electric cylinder 19 which is a working machine rotating mechanism is interposed between the rotating guide member 18 and one end of the rotating guide member 18 through an offset long hole 18a. The work implement rotation guide member 18 has the axis of the support pin 22 at a position deviated from the axis of the rotation shaft 7, and rotates the work implement (the pretreatment body 10 and the leveling body 14). And a guide function for offset when the work machine is offset.
[0015]
The work implement turning guide member 18 rotates about the support pin 22 when the work implement turn electric cylinder 19 is extended and contracted, and the transmission frame 8 and the pre-processing body transmission case via the support pin 16. 9, the pretreatment body 10, the ridge body transmission case 11, the ridge body 14, and the like are rotated in the horizontal direction around the rotation shaft 7, and the rotation range is the most with the electric cylinder 19 for rotating the working machine. 1 and 4 from the expanded state in FIGS. 1 and 4 to the state in FIGS. 5 and 6 in which the working machine rotating electric cylinder 19 is most contracted. The rotating operation of the working machine (the pre-processing body 10 and the ridge body 14) by the working machine rotating electric cylinder 19 is performed by the offset electric cylinder 15 via the offset frames 4 and 5 from the retracted state of FIGS. The setting is made so that the pre-processing body 10 and the ridge body 14 cannot be performed in a range where they are offset left and right.
[0016]
That is, a limit switch 20 which is turned on / off by a switch plate 20a is mounted on the hitch frame 2 side, and an operation member 21 for pressing / releasing the switch plate 20a is provided coaxially with the pivot shaft 5a of the offset frame 5, Only when the pretreatment body 10 and the ridge body 14 are in the retracted state shown in FIGS. 1 and 5 by the rotation of the frames 4 and 5, the operator 21 contacts the switch plate 20a and the limit switch 20 is turned on, and the limit switch 20 is turned on. Only when the switch 20 is turned on, the operation of the work machine rotating electric cylinder 19 is enabled. 1 and 5, the pretreatment body 10 and the ridge body 14 are not moved left and right by the offset electric cylinder 15 via the offset frames 4 and 5 from the storage state of FIGS. Offset is performed in stages, and the levee work can be performed by arbitrarily selecting up to the maximum offset position shown in FIGS. When the pretreatment body 10 and the ridge body 14 are in a workable state where they are offset left and right from the storage state shown in FIGS. 1 and 5, the operator 21 is not in contact with the switch plate 20 a (see FIGS. 4 and 5). 6), the limit switch 20 is off. Therefore, when the pretreatment body 10 and the ridge body 14 are in an offset workable state, the work machine rotating electric cylinder 19 does not operate, and the offset adjustment of the pretreatment body 10 and the ridge body 14 and the 180-degree horizontal rotation are performed. Are not performed at the same time. Further, the operation of the offset electric cylinder 15 may be stopped when the operator 21 comes into contact with the switch plate 20a.
[0017]
When the pretreatment body 10 and the ridge body 14 are in the retracted state shown in FIGS. 1 and 5, the work machine rotating electric cylinder 19 is rotated from the forward working state to the backward working state or from the backward working state to the forward working state. Automatic locking / unlocking devices are provided for automatically locking and automatically unlocking the respective work states in conjunction with the switching operation. This automatic locking / unlocking device coaxially pivots a lock link plate 35 having first and second plates 23, 24 forming a three-shaped arc on a support pin 22 protruding from the link frame 6, On the distal end side of the second plate 24, it is fitted into the long slot for offset 18 a coaxially with the distal end of the piston of the electric cylinder 19 for rotating the working machine. The lock link plate 35 is positioned so as to surround the rotation shaft 7 together with the work implement rotation guide member 18, and the pretreatment body 10 and the ridge body 14 are horizontally rotated by the expansion and contraction operation of the work implement rotation electric cylinder 19. As a result, it is displaced with respect to the rotating shaft 7.
[0018]
A lock pin 25 protrudes upward from the transmission frame 8, and a first lock plate 26 that pivots so as to be able to lock and unlock the lock pin 25 is pivotally supported by the link frame 6. The first lock arm 27 connects the lock plate 26 and the first plate 23 to each other. A second lock plate 29 is pivotally supported by the link frame 6 at a position 180 degrees opposite to the first lock plate 26, and a second lock plate is provided between the second lock plate 29 and the second plate 24. They are linked by an arm 30. Toggle springs 28 and 31 are provided between the first lock plate 26 and the first lock arm 27 and between the second lock plate 29 and the second lock arm 30, respectively. The second lock plates 26 and 29 are held in a locked state or an unlocked state with respect to the lock pin 25. When the ridge coating machine 1 is rotated from the forward operation state to the reverse operation state or from the reverse operation state to the forward operation state by the working machine rotating electric cylinder 19, the respective positions are controlled by the automatic lock / release devices. Lock and release automatically.
[0019]
A gas spring 34 is interposed between a support frame 32 projecting from the link frame 6 and a working machine frame 33 connecting the pretreatment body 10 and the ridge body 14. The gas spring 34 is used to offset the pre-processing body 10 and the ridge body 14 to the left and right by the offset electric cylinder 15 via the offset frames 4 and 5, and the pre-processing body 10 and the It functions to hold the thrust of both electric cylinders 15 and 19 and to buffer the impact of the rotation of the pretreatment body 10 and the ridge body 14 when the ridge body 14 is rotated horizontally. Also, when the pretreatment body 10 and the ridge body 14 are offset to the left and right, and when the ridge is horizontally rotated, the tractor 1 is usually lifted in a forward inclined state via a hitch mechanism by a tractor. After the pretreatment body 10 and the levee body 14 have passed the pivot points in the left and right and horizontal directions, the pretreatment body 10 and the levee body rotate to the offset side by their own weight, and the gas spring 34 becomes the pretreatment body 10 and the levee body. The brake 14 acts as a buffering action to prevent the 14 from rotating rapidly. The operation of the electric cylinder for offset 15 and the electric cylinder 19 for rotating the working machine is performed by operating buttons of a control box arranged near the cockpit of the tractor.
[0020]
In the ridge coater 1 having such a configuration, the ridge coater 1 is connected to the tractor via the three-point link connection mechanism, power is transmitted from the PTO shaft of the tractor to the input shaft 3a, and the gearbox 3 is shifted. The power is transmitted to the offset frame 4, the link frame 6, the rotating shaft 7, the transmission frame 8, the pre-processing body transmission case 9, and the ridge body transmission case 11 to the intermediary pre-processing body 10 and the ridge ridge 14 to drive and rotate. And perform the ridge work. In the pretreatment body 10, a part of the original ridge and the field are plowed and raised in a ridge form with respect to the original ridge, and the cultivated and raised soil is formed into a ridge slope by the regular ridge body 14. Level the top.
[0021]
The levee coating machine 1 of this embodiment normally retracts the pretreatment body 10 and the ridge body 14 from the storage state of FIG. The ridge is formed on the right side of the ridge coating machine 1 while moving in the forward (arrow) direction. Between the storage state of FIG. 1 and the state of maximum offset in the forward operation state of FIG. 4, the levee work can be performed while the pretreatment body 10 and the ridge body 14 are stopped at arbitrary positions. When the pretreatment body 10 and the ridge body 14 are at the offset position, the operating element 21 is not in contact with the switch plate 20a, the limit switch 20 is off, and the electric cylinder 19 for rotating the working machine does not operate.
[0022]
When it is desired to perform all the ridge work without the use of human power at the corners of a field, etc., by using the ridge coating machine 1, the pretreatment body 10 and the ridge body 14 are switched to the backward operation state and the ridge work is performed while moving backward. I do. At this time, the advance levee work is temporarily stopped, the ridge coater 1 is lifted by the three-point link connecting mechanism of the tractor, and the offset electric cylinder 15 is extended. Then, when the pre-treatment body 10 and the ridge body 14 are rotated clockwise via the offset frames 4 and 5 to reach the storage state shown in FIG. 1, the operation of the electric cylinder for offset 15 is stopped. At this time, the operator 21 is in contact with the switch plate 20a, and the limit switch 20 is in the ON state.
[0023]
When the working machine rotating electric cylinder 19 is operated (contracted) in the state of FIG. 1, first, the tip of the piston moves along the offset long hole 18a of the working machine rotating guide member 18, and the lock link plate 35, The first and second lock arms 27 and 30 are operated to unlock the first lock plate 26. Next, while the work implement rotating guide member 18 rotates about the support pin 22, the transmission frame 8, the pre-processing body transmission case 9, the pre-treatment body 10, the ridge body transmission case 11, and the The ridge 14 and the like are turned in the horizontal direction about the turning shaft 7. At this time, the gas spring 34 holds the initial operating force of the electric cylinder 19 for rotating the working machine while the pretreatment body 10, the ridge body 14 and the like rotate about 135 degrees, and rotates the remaining about 45 degrees by its own weight. During that time it acts as a buffer. FIG. 5 shows a state in which the pretreatment body 10, the ridge body 14, and the like have finished horizontal rotation. At this time, the second lock plate 29 is in a locked state. In this state, the pretreatment body 10 and the levee body 14 are offset by the offset electric cylinder 15 as shown in FIG. 6 and the backward work is performed, thereby enabling the levee work that could not be performed by the forward work. When the pretreatment body 10 and the ridge body 14 are changed from the backward operation state to the forward operation state, the order may be reversed.
[0024]
【The invention's effect】
As described above, according to the offset / rotation mechanism of the working machine of the present invention, the following effects can be obtained.
[0025]
▲ 1 ▼. At the intermediate position where the work machine is moved from the forward or backward work position to the other work position, a rotation setting position is provided at which the work machine can rotate horizontally with respect to the offset frame. Alternatively, when moving (offset) from one working position to the other working position in reverse, the working machine is horizontally rotated at the rotation setting position and then easily moved to the other working position, and the moving amount (offset amount) And can be moved steplessly and smoothly. Further, the operation of moving (returning) from the rotation setting position to the one working position side can be easily performed.
▲ 2 ▼. An offset mechanism for offsetting the working machine to the left and right is interposed between the hitch frame and the offset frame, and a working machine rotating mechanism is provided between the hitch frame and a working machine rotating guide member provided on the working machine. , The worker can easily perform the horizontal rotation of the working machine and the offset moving operation to the forward or backward working position while riding on the traveling machine (tractor).
[0026]
(3). The offset mechanism is provided with a switch mechanism for restricting the operation of the work machine rotating mechanism, so that the horizontal rotation of the work machine can be performed only at the rotation setting position, and the work machine can be moved during the offset moving work. It is possible to avoid interference with other members that occurs in the case of horizontal rotation.
▲ 4 ▼. The offset mechanism and the work implement rotation mechanism are provided with an offset frame and a safety mechanism that controls whether or not the work implement can be rotated by a signal generated by the offset operation of the work implement. An erroneous operation such as horizontal rotation can be avoided.
▲ 5 ▼. The work implement rotation guide member has a fulcrum axis at a position deviated from the work implement rotation axis, and provides a rotation guide function for rotating the work implement and an offset guide for offsetting the work implement. With this function, it is not necessary to increase the strength of the transmission frame of the working machine more than necessary, and the working machine can be smoothly horizontally rotated.
[0027]
▲ 6 ▼. When the work implement is turned to the forward or backward work position, the work implement is rotated horizontally and automatically locked and released by the work implement rotation mechanism, the work implement rotation guide member, and the lock link plate. The lock can be automatically released by the operation of moving the work machine from the state where the work machine is offset to the forward or backward work position to another work position.
▲ 7 ▼. Since the thrust holding of the offset mechanism and the shock absorbing member of the offset frame and the rotation of the work machine are provided between the offset frame and the work machine, the offset work and the horizontal rotation work of the work machine can be smoothly performed. Can be.
[Brief description of the drawings]
FIG. 1 is a plan view showing a working machine (row coating machine) according to the present invention in a forward working state and in a stored state.
FIG. 2 is an enlarged cross section taken along line AA of FIG.
FIG. 3 is an enlarged partial cross section taken along line BB of FIG. 1;
FIG. 4 is a plan view showing a state in which a working machine (row coating machine) is in a forward working state and is maximally offset.
FIG. 5 is a plan view showing a state in which the working machine (row coating machine) is in a reverse working state and is in a retracted state.
FIG. 6 is a plan view showing a state in which a work machine (row coating machine) is in a reverse work state and is maximally offset.
[Explanation of symbols]
1 Row coating machine (working machine)
2 Hitch frame 3 Gear box 3a Input shaft 4,5 Offset frame (parallel link) 4a, 5a, 4b, 5b Pivot shaft 6 Link frame 7 Rotating shaft 8 Transmission frame 9 Pre-processing body transmission case 10 Pre-processing body 11 Ridge transmission case 12 Polygonal conical drum 13 Horizontal cylindrical body 14 Alignment ridge 15 Electric cylinders 16 and 22 for offset Support pin 17 V-shaped long hole 18 Work machine rotation guide member 18a Offset long hole 19 Work machine rotation Electric cylinder 20 Limit switch 20a Switch plate 21 Switch operator 23 First plate 24 Second plate 35 Lock link plate 25 Lock pin 26 First lock plate 27 First lock arm 28, 31 Toggle spring 29 Second lock Plate 30 Second lock arm 32 Support frame 33 Industrial machine frame 34 Gas spring

Claims (7)

A hitch frame attached to the traveling body, an offset frame pivotally supported so as to be able to be offset in the left-right direction with respect to the hitch frame, and a working machine attached to the offset frame so as to be rotatable in a horizontal direction,
While the work machine is offset to one of the left and right work positions by an offset frame, forward work or reverse work is enabled, and the work machine is moved from the forward or reverse work position to the other work position. An offset / rotation mechanism for a working machine, wherein a rotation setting position at which the working machine is rotatable in a horizontal direction with respect to the offset frame is provided at a portion. An offset mechanism for offsetting the offset frame and the working machine to the left and right is interposed between the hitch frame and the offset frame, and the working machine is provided between the hitch frame and the working machine rotating guide member provided on the working machine. The offset / rotation mechanism for a working machine according to claim 1, wherein a rotation mechanism is interposed. 3. The offset / rotation mechanism for a working machine according to claim 2, wherein the offset mechanism includes a switch mechanism for restricting operation of the working machine rotation mechanism. The safety mechanism according to claim 2 or 3, wherein the offset mechanism and the work implement rotating mechanism are provided with an offset frame and a safety mechanism that controls whether or not the work implement can be rotated by a signal generated by the offset operation of the work implement. Work machine offset / rotation mechanism. The work implement rotation guide member has a fulcrum axis at a position deviated from the work implement rotation axis, and provides a rotation guide function for rotating the work implement and an offset for offsetting the work implement. The offset / rotation mechanism of a working machine according to claim 2, further comprising a guide function for use. The work machine rotating mechanism, the work machine rotation guide member, and the lock link plate provided coaxially with the work machine rotation guide perform horizontal rotation and automatic lock / automatic release of the work machine. 3. An offset / rotation mechanism for a working machine according to claim 2, wherein: A buffer member for holding the thrust of the offset mechanism at the time of rotating the offset frame and the working machine and buffering the impact of the rotation of the offset frame and the working machine is provided between the offset frame and the working machine. The offset / rotation mechanism for a working machine according to claim 1 or 2, wherein:

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