JP4355194B2 - Offset work machine - Google Patents

Description

  The present invention relates to an offset working machine, and more particularly to an offset working machine that has a working unit that is attached to a rear portion of a traveling machine body and that performs an offset work on both right and left sides of the traveling machine body.

  Such an offset work machine is mounted on a traveling machine body such as a tractor, and when performing a linear coating operation for spreading the field along the traveling direction of the traveling machine body or a groove digging work for digging a groove in the field. Used for. Since the padding work and the grooving work are work performed on the periphery of the field, the work part for performing these work needs to be installed at a position offset laterally with respect to the travel position of the traveling machine body. There is.

  Since these padding work and grooving work are straight line work at the offset position according to the progress of the traveling machine body, the traveling machine body is used when working along the periphery of the field in a rectangular field. When the leading end of the paddle reaches the end of the field, the subsequent work cannot be performed, and an unworked part always remains at the four corners of the rectangular field.

  Therefore, in the case of a spot coater, the spot coater is moved to the offset work position on the opposite side of the normal operation with respect to the traveling machine body, and its front-rear relation is reversed (reverse reversed), so that the unworked parts at the four corners On the other hand, a wrinkle coater capable of working while moving the traveling machine body backward has been proposed (see Patent Document 1).

  This wrinkle coater has a machine frame that is detachably connected to a connection mechanism provided on the traveling machine body, and a left and right direction using a rotation center shaft that extends in the vertical direction on the rear side of the machine frame as a rotation fulcrum. A movable machine frame provided on the movable machine frame, and a work unit disposed on the movable machine frame for crushing the top of the old fence and applying the soil on the cut old fence. Configured. The working unit can be installed at any one of a left offset work position offset to the left side and a right offset work position offset to the right side with respect to the traveling direction of the traveling machine body via the movable machine frame.

  In addition, this conventional wrinkle coater is provided with a locking means for locking the movable machine frame to the machine frame in a state where the working unit is installed at the left offset work position and the right offset work position. The locking means includes an operation lever provided on the machine frame so as to be tiltable, a lock arm that swings up and down in conjunction with the tilting operation of the operation lever, and a work unit provided on the movable machine frame with the left offset work position and And a lock pin that can be engaged with the lock arc in a state of being installed at the right offset work position.

Japanese Patent Laid-Open No. 08-149902

  In order to reverse the reverse of the working section in order to perform the reverse coating work on the unworked portion left in the corner of the field by this conventional flat coater, the movable lever frame is locked once by operating the operation lever. Release and move the movable machine frame from the current work position (for example, the left offset work position) to the opposite, for example, the right offset work position, and operate the operation lever again to lock the movable machine frame to the machine frame. Is required. When an operator who has boarded the traveling machine body performs this reversal locking work, the worker must first get out of the traveling machine body and perform the above-described reversal locking work, which is troublesome. In addition, if the locking work for locking the movable machine frame to the machine frame is neglected or the locked state is insufficient, there is a risk that the working part or the like may be damaged, and the drape work cannot be performed with confidence. Arise. These problems are the same for the grooving machine.

  The present invention has been made in view of such a problem, and provides an offset working machine that can easily perform a reverse locking operation of a working portion, can be reliably locked, and can perform a wrinkling operation with peace of mind. The purpose is to do.

According to the first aspect of the present invention, there is provided a mounting portion to be mounted on the traveling machine body, an offset mechanism portion movable in the left-right direction from the mounting portion, and a rotation fulcrum provided on the moving end side of the offset mechanism portion. Between the offset mechanism unit and the working unit, the working unit which is disposed so as to be pivotable in the horizontal direction around the fulcrum and performs the offset operation by the forward and backward movements of the traveling machine body and the power transmitted from the traveling machine body The working direction of the working part is held in a predetermined direction with respect to the movement of the offset mechanism part , and the working part is rotated with respect to the turning fulcrum by the operation of the turning actuator (for example, the expansion cylinder 41 in the embodiment). and a coupling mechanism for moving, provided the offset mechanism, in a state where the working direction of the working portion by the coupling mechanism is held in a predetermined direction, beyond a predetermined moving area offset mechanism moves When the locking member provided on the working side (e.g., the forward side engaging member 71 in the embodiment, the reverse-side engaging member 72) and engaged to restrict the rotation of the working unit, the offset mechanism portion It has a lock mechanism that releases the engagement with the locking member and allows the working portion to rotate when it moves into the predetermined movement area from a position beyond the predetermined movement area.

According to a second aspect of the present invention, in the offset working machine according to the first aspect, the offset mechanism portion has one end side rotatably connected to the mounting portion, and the moving end side is coaxial with the rotation center axis of the rotation fulcrum. An offset frame that is pivotably connected to each other, and a link member that is connected in parallel along the offset frame and that is connected to a connecting arm member whose one end is rotatably connected to the mounting portion and whose moving end is connected to the connecting mechanism. And a parallel link mechanism.

According to a third aspect of the invention, in the invention of the offset working machine according to the second aspect, the lock mechanism is rotatably provided on the cam portion provided on the link member and the connecting arm member, and is locked to the end portion. It has engagement recesses (for example, the forward-side engagement recess 76 and the reverse-side engagement recess 77 in the embodiment) that can be engaged with the member, and rotates while contacting the cam portion according to the movement of the offset mechanism portion. When the position of the offset mechanism part exceeds the predetermined movement area, the engagement concave part engages with the locking member, and when the offset mechanism part moves from the position beyond the predetermined movement area into the predetermined movement area, the engagement concave part And a locking plate for releasing engagement with the locking member.

According to a fourth aspect of the present invention, in the offset working machine according to the third aspect, the working direction of the working unit is changed from the forward direction on one side of the left and right sides of the traveling machine body to the reverse side on the other side by the operation of the rotating actuator. It can be reversed in the direction.

According to a fifth aspect of the present invention, in the offset working machine according to the fourth aspect, the locking member includes a forward side locking member and a reverse side locking member provided on the working part side, The engaging recess is a forward advance that can be engaged with the forward-side locking member in a state where the working portion is installed at the forward working position where the working can be performed by the forward movement of the traveling machine body by the operation of the rotation actuator and the movement of the offset mechanism portion. The engaging portion can be engaged with the reverse side locking member in a state where the working portion is installed at the reverse operation position where the operation can be performed by the backward movement of the traveling machine body by the movement of the side engagement recess and the rotation actuator and the movement of the offset mechanism portion. And a reverse-side engaging recess.

  The invention of claim 6 is the invention of the offset working machine according to any one of claims 3 to 5, wherein the lock plate is a guide surface of the cam portion (for example, the first guide surface 73a and the second guide surface in the embodiment). 73b, the third guide surface 73c, and the fourth guide surface 73d).

  A seventh aspect of the present invention is the offset working machine according to any one of the first to sixth aspects, wherein the working unit includes a pre-processing unit (for example, the heaven field processing unit 55 in the embodiment) and a trimming unit. It is a glazed paint working part.

  A seventh aspect of the present invention is the offset working machine according to any one of the first to sixth aspects, wherein the working section includes a grooving section (for example, the grooving body 103 in the embodiment). It is characterized by being.

According to the offset working machine of the first aspect, when the offset mechanism unit moves and exceeds the predetermined moving area in a state where the working direction of the working unit is held in the predetermined direction by the coupling mechanism, the offset working unit is provided on the working unit side. When the offset mechanism moves from the position beyond the predetermined movement area into the predetermined movement area, the engagement with the locking member is released. By having a lock mechanism that allows rotation of the working unit, the lock mechanism is operated in conjunction with the movement of the offset mechanism unit to restrict the rotation of the working unit or to restrict the rotation of the restricted working unit. Can be tolerated. This eliminates the need for a locking operation for the operator to lock or unlock the rotation of the working unit, thereby eliminating the inconvenience of the locking operation. Further, when the offset mechanism part moves beyond the predetermined movement area, the rotation of the working part is locked, and when the offset mechanism part moves from the position exceeding the predetermined movement area into the predetermined movement area, the working part becomes unlocked. since, the offset mechanism sets a predetermined movement area for the offset work by the work unit to be moved to a position beyond a predetermined moving area, the rotation of the working portion offset mechanism exceeds a predetermined moving area is locked Therefore, the working unit is always locked during offset work by the working unit. For this reason, the locked state of the work part at the time of the offset work can be ensured, and as a result, the offset work by the work part can be performed with peace of mind.

According to the offset working machine of claim 2, the offset mechanism portion has an offset frame and a link member to form a parallel link mechanism, so that when the working portion is integrated with the connecting arm member, the offset mechanism portion is offset. The working part is offset and moved in a state in which the working direction is held in a predetermined direction by the left-right swing of the mechanism part . For this reason, when an offset operation is performed by the working unit, the working position of the working unit can be easily adjusted only by swinging the offset mechanism unit left and right.

According to claim 3, wherein the offset working machine, the locking mechanism, by becoming comprises a cam portion provided on the link member, and a lock plate rotatably mounted on the connecting arm member, the offset mechanism When the part moves, the lock plate rotates while coming into contact with the cam part, and when the position of the offset mechanism part exceeds the predetermined movement region, the engagement recess provided in the lock plate engages with the locking member to work. When the offset mechanism is moved from the position beyond the predetermined movement area into the predetermined movement area, the engagement of the engaging recess with the locking member is released and the working section is rotated. Permissible. For this reason, it is possible to provide a lock mechanism capable of locking or unlocking the working unit only by moving the offset mechanism unit .

According to the offset work machine of claim 4, by enabling the work direction of the working part to be reversed from the forward direction on one side of the left and right sides of the traveling machine body to the reverse direction on the other side by the operation of the rotation actuator, In combination with the movement of the offset mechanism , the working unit can be moved to a reverse working position where the working unit can move straight while moving the traveling machine backward. Further, since the working direction of the working unit can be reversed between the forward direction and the backward direction by the operation of the rotating actuator, the workability of the installation work in which the working unit is installed from the forward working position to the backward working position can be improved.

According to the offset working machine of the fifth aspect, the locking member has the forward side locking member and the reverse side locking member provided on the working part side, and the engaging recess of the lock plate is the forward side locking member. By having the forward-side engagement recess that can be engaged with the stop member and the reverse-side engagement recess that can be engaged with the reverse-side locking member, the working unit is driven by the operation of the rotation actuator and the movement of the offset mechanism. When the forward movement position is set so that the work can be performed by the forward movement, the forward-side engaging recess engages with the forward-side locking member, and the rotation of the working portion is locked. Further, when the working unit is installed at the reverse operation position where the operation can be performed by the backward movement of the traveling machine body by the operation of the rotation actuator and the movement of the offset mechanism , the reverse side engagement recess engages with the reverse side locking member. Thus, the rotation of the working unit is locked. That is, when the working unit is installed at the forward working position and the backward working position, the rotation of the working unit is locked. For this reason, the rotation of the working unit installed at the forward working position and the backward working position can be reliably brought into the locked state.

According to the offset working machine of the sixth aspect, the lock plate has the rotating roller that can rotate while being in contact with the guide surface of the cam portion, so that the lock plate is provided on the guide surface of the cam portion according to the movement of the offset mechanism portion. The turning operation of the lock plate that rotates while contacting can be made smooth. For this reason, the operation | movement in which an engagement recessed part engages with a locking member, or the engagement of an engagement recessed part is cancelled | released can be made smooth.

  According to the offset working machine of the seventh aspect, the working unit is made into a glazed working unit having a pre-processing unit and a trimming unit, so that the rotation of the working unit by the operator can be in a locked state or an unlocked state. This eliminates the need for locking work, ensures that the rotation of the working part during offset work can be reliably locked, and has the advantage that the offset work by the working part can be performed with confidence. A possible offset working machine can be provided.

  According to the offset working machine of the eighth aspect, the working portion is a grooving working portion provided with a grooving portion, so that the operator can perform a locking operation to turn the working portion into a locked state or an unlocked state. Offset work that can be used for grooving work with the advantage that the work part can be reliably locked during the offset work and the offset work can be performed safely by the work part. Machine can be provided.

The offset working machine according to the present invention is provided on the working unit side when the offset mechanism unit moves and exceeds a predetermined moving region in a state where the working direction of the working unit is held in a predetermined direction by the coupling mechanism. Engage with the locking member to restrict the rotation of the working part, and when the offset mechanism moves from the position beyond the predetermined movement area into the predetermined movement area, the engagement with the locking member is released and the work is performed. By having a lock mechanism that allows the rotation of the part, the operator does not need to perform a lock work to lock or unlock the rotation of the work part, and eliminates the troublesomeness of the lock work. Can do. Further, the offset mechanism sets a predetermined movement area for the offset work by the work unit to be moved to a position beyond a predetermined moving area, the rotation of the working portion offset mechanism exceeds a predetermined moving area is locked Therefore, the working unit is always locked during offset work by the working unit. For this reason, the locked state of the work part at the time of the offset work can be ensured, and as a result, the offset work by the work part can be performed with peace of mind.

In addition, the offset mechanism unit has an offset frame and a link member to form a parallel link mechanism, and when the working unit is integrated with the connecting arm member, the working unit is moved by the left and right swing of the offset mechanism unit. Since the offset movement is performed while the work direction is held in a predetermined direction, the work position adjustment of the work part can be easily performed only by swinging the offset mechanism part left and right.

Further, the lock mechanism includes a cam portion provided on the link member and a lock plate rotatably provided on the connecting arm member, so that the rotation of the working portion is locked only by the movement of the offset mechanism portion. It is possible to provide a lock mechanism that can be in a state or in an unlocked state.

Furthermore, the operation direction of the working unit can be reversed from the forward direction on one side of the left and right sides of the traveling machine body to the backward direction on the other side by the operation of the rotating actuator, so that the traveling machine body can be coupled with the movement of the offset mechanism unit. The work part can be moved to a reverse work position where the work part can move straight while being moved backward, and the workability of the installation work for installing the work part at the reverse work position can be improved.

  The locking member has a forward side locking member and a reverse side locking member provided on the working part side, and the engaging recess of the lock plate moves forward when the working part is installed at the forward working position. When the forward engaging recess and the working portion that can be engaged with the side locking member are installed at the reverse working position, the working portion moves forward by having the backward engaging concave that can be engaged with the reverse engaging member. When installed at the work position and the reverse work position, the rotation of the work part is locked, so that the work part installed at the forward work position and the reverse work position can be reliably locked.

Further, the lock plate has a rotating roller that can rotate while being in contact with the guide surface of the cam portion, so that the lock plate that rotates while contacting the guide surface of the cam portion according to the movement of the offset mechanism portion is rotated. The operation can be made smooth, and as a result, the operation in which the engagement recess engages with the locking member or the engagement recess is released can be made smooth.

  In addition, the working part can be turned into a glazing work part provided with a pre-processing part and a trimming part, or the working part can be turned into a grooving work part provided with a grooving part. There is an advantage that the locking operation for locking and unlocking is unnecessary, the rotation of the working part during the offset work is surely locked, and the offset work by the working part can be performed with peace of mind. An offset working machine capable of performing a painting operation or a grooving operation can be provided.

  Hereinafter, preferred embodiments of an offset working machine according to the present invention will be described with reference to FIGS. In addition, this Embodiment demonstrates the glazing machine and ditching machine which are examples of an offset working machine.

[First embodiment]
First, the wrinkle coater will be described. For convenience of explanation, the directions of the arrows shown in FIG. 1 (perspective view) and FIG. 2 (plan view) will be described below as the front-rear direction and the left-right direction. As shown in FIGS. 1 and 2, the wrinkle coater 1 is connected to a three-point link connecting mechanism (not shown) provided at the rear portion of the traveling machine body 90 so that the traveling machine body 90 moves forward and backward. In accordance with this, the paintwork is performed. The coater 1 is mounted by a mounting unit 10 that is mounted on the traveling machine body 90 and includes an input shaft (not shown) to which power from the traveling machine body 90 is input, and a turning cylinder 3 provided in the mounting unit 10. a swingable offset mechanism 20 in the lateral direction from the section 10, a working unit 50 for performing offset work by the power transmitted from the input shaft is disposed on the moving end of the offset mechanism 20 (rear end side) It has.

  The mounting portion 10 includes a hitch frame 11 that extends in the left-right direction, and a connection frame 13 that is attached to the front side of the hitch frame 11 and that can be connected to a three-point link connection mechanism provided at the rear portion of the traveling aircraft body 90. . A gear box (not shown) is provided at the lower center of the hitch frame 11 in the left-right direction, and the above-described input shaft (not shown) is provided in this gear box. The input shaft is configured such that power is transmitted from a PTO shaft (not shown) of the traveling machine body 90 via a transmission shaft (not shown).

The offset mechanism portion 20 is rotatably connected to the hitch frame 11 at the front end side and extends rearward, and is arranged along the left side of the offset frame 21 so that the front end side is the left end portion of the hitch frame 11. And a link member 25 that is pivotably connected to each other. The rear end side of the link member 25 is rotatably attached to a connecting arm member 23a connected to a connecting portion 23 provided rotatably at the rear end portion of the offset frame 21. The offset mechanism unit 20 forms a parallel link mechanism by the offset frame 21, the link member 25, the hitch frame 11, and the connecting arm member 23a.

  The offset frame 21 is a box-shaped member having a hollow inside, and swings in the left-right direction by the expansion and contraction operation of the revolving cylinder 3 connected between the rear end portion of the offset frame 21 and the left end portion of the hitch frame 11. Is possible. A power transmission mechanism (not shown) is provided in the offset frame 21, and the power transmitted from the traveling machine body 90 to the input shaft by the power transmission mechanism is rotatably disposed on the rear end side of the offset frame 21. The shaft 33 can be transmitted.

  A rotating central shaft 7 is connected to the lower portion of the driven shaft 33 so as to be coaxial with the driven shaft 33 and extend downward. That is, the rotation center shaft 7 rotates with the rotation of the driven shaft 33. The connecting portion 23 described above is pivotally attached to the lower end of the rear end of the offset frame 21. That is, the connecting portion 23 is in a non-coupled state with the rotation center shaft 7 and is rotatable about the rotation center shaft 7 as a rotation fulcrum O. The connecting arm member 23 a described above is connected to the connecting portion 23. At the lower end portion of the rotation center shaft 7 that penetrates the connecting portion 23, there is a working portion 50 having a frame portion 51 that extends from the rotation fulcrum O to the offset work position side with the rotation center shaft 7 as a rotation fulcrum O. Is provided.

  The frame portion 51 can be rotated about the rotation fulcrum O as a rotation center by the expansion / contraction operation of the expansion / contraction cylinder 41 of the connection mechanism 40 connected between the offset frame 21 and the frame portion 51. The extension direction of the frame portion 51 is held so as to be parallel to the left-right direction of the traveling machine body 90 with respect to the swing of the offset mechanism 20. The connection mechanism 40 includes a connection portion 23, a rotation link mechanism 42 connected between the connection portion 23 and the frame portion 51, and a rotation link mechanism 42 connected between the rotation link mechanism 42 and the working unit 50. And a telescopic cylinder 41 for telescopically moving. The rotation link mechanism 42 is a four-node link mechanism including four nodes, and a portion of the connection portion 23 from the rotation fulcrum O of the connection portion 23 to a position P1 having a predetermined distance on the front end side of the offset frame 21 is provided. The first node 42a is defined as a second node 42b between the fulcrums of the first link member 43 pivoted in the left-right direction with the position P1 as a rotation fulcrum. It is pivotally pivotable in the left-right direction, and the other end is pivotally pivoted in the left-right direction with a position P2 having a predetermined distance from the pivot fulcrum O in the extending direction of the frame 51 as a pivot fulcrum. The third link 42c is defined between the fulcrums of the second link member 44, and the portion of the frame 51 between the pivot position P2 of the second link member 44 pivoted to the frame 51 and the pivot fulcrum O is the second. It is configured as four sections 42d.

  The first node 42a of the rotation link mechanism 42 is a fixed node, the second node 42b is an input node, the third node 42c is an intermediate node, and the fourth node 42d functions as an output node. The length L2 of the second node 42b that is the input node is longer than the length L4 of the fourth node 42d that is the output node. For this reason, the rotation angle of the fourth joint 42d can be made larger than the rotation angle of the second joint 42b. The lengths of the second joint 42b (first link member 43) and the fourth joint 42d are such that when the telescopic cylinder 41 is fully contracted, the frame portion 51 extends in the right direction and the telescopic cylinder 41 is fully extended. Then, the frame portion 51 is set to extend in parallel to the left side direction.

The connection mechanism 40 configured in this way holds the extending direction of the frame portion 51 parallel to the left-right direction with respect to the left-right swing of the offset mechanism portion 20. That is, the connection mechanism 40 integrates the frame part 51 with the connection part 23 when the expansion / contraction operation of the expansion / contraction cylinder 41 is restricted in a state where the frame part 51 extends in parallel in the left-right direction. As a result, when the offset mechanism portion 20 swings left and right in this state, the frame portion 51 connected to the connecting portion 23 via the rotation link mechanism 42 by the offset mechanism portion 20 constituting the parallel link mechanism is parallel to the left and right direction. Move while being maintained. The attachment position of the telescopic cylinder 41 will be described later.

  The frame portion 51 incorporates a winding transmission mechanism (not shown) that uses a vertical rotation shaft 52 disposed coaxially with the rotation center shaft 7 as a power transmission shaft. This winding transmission mechanism transmits the power transmitted to the rotation center shaft 7 to the tip of the frame portion 51 via the vertical rotation shaft 52.

  A work main body 54 is connected to a lower end of the frame 51 via a drive shaft case (not shown) extending downward. A power transmission mechanism (not shown) is built in the drive shaft case, and power is transmitted to the power transmission mechanism via a winding transmission mechanism in the frame portion 51. The work main body 54 includes a heaven processing unit 55 that cuts off the upper part of the old fence formed along the periphery of the field, a pre-processing unit 59 that piles up the cut soil, and the piled up soil. It has a trimming part 63 to be applied on the old basket.

  The celestial processing unit 55 includes a celestial processing rotor 56 that is rotatable. The celestial processing rotor 56 is connected to and supported by the drive shaft case via a celestial power transmission case 57. A power transmission mechanism (not shown) is built in the heaven power transmission case 57, and the power from the power transmission mechanism of the drive shaft case is transmitted to the heaven processing rotor 56 via this power transmission mechanism. .

  The pre-processing unit 59 has a tilling rotor 60 that is rotatable. The tilling rotor 60 is connected to and supported by the drive shaft case via a pretreatment power transmission case 61. A power transmission mechanism (not shown) is built in the pretreatment power transmission case 61, and the power from the power transmission mechanism of the drive shaft case is transmitted to the tilling rotor 60 via this power transmission mechanism. A fixing member 62 having one end fixed to the frame portion 51 and extending to the upper position side of the tilling rotor 60 is provided at an upper position of the pretreatment portion 59, and the telescopic cylinder constituting the connecting mechanism 40 described above is provided on the fixing member 62. The bottom end portion of 41 is pivoted.

  The trimming unit 63 has a polyhedral drum 65 attached to a rotating shaft 64 that extends in the left-right direction and is rotatably supported, and a cylindrical portion 66 that is attached to the right end of the polyhedral drum 65 and extends in the lateral direction. . The trimming part 63 is connected to and supported by the drive shaft case via a trimming power transmission case 67. A power transmission mechanism (not shown) is built in the trimming power transmission case 67, and the power from the power transmission mechanism of the drive shaft case is transmitted to the trimming section 63 via this power transmission mechanism.

  The work main body portion 54 is disposed with respect to the frame portion 51 so that the rotation shaft 64 of the trimming portion 63 is parallel to the extending direction of the frame portion 51 in a state where the frame portion 51 extends in parallel in the left-right direction. ing. That is, the work main body 54 is arranged so that the work direction axis O2 indicating the direction of the work part 50 is parallel to the traveling direction A of the traveling machine body 90 when the frame part 51 extends in the left-right direction. Has been.

As shown in FIG. 3 (side view) and FIG. 4 (a) (plan view), the working direction of the working unit 50 is changed to that in FIG. 2 by the connecting mechanism 40 on the moving end side (rear side) of the offset mechanism unit 20. When the offset mechanism section 20 swings and exceeds a predetermined movement area described later in a state where the traveling machine body 90 is held in a direction parallel to the traveling direction A, the forward side locking provided on the working section 50 side is provided. Engage with the member 71 or the reverse side locking member 72 to restrict the rotation of the working part 50, and when the offset mechanism part 20 moves from the position beyond the predetermined movement area into the predetermined movement area, the forward side locking A lock mechanism 70 is provided that releases the engagement with the member 71 or the reverse-side locking member 72 and allows the working unit 50 to rotate.

The locking mechanism 70 is rotatably provided on the cam portion 73 attached to the link member 25 and the connecting arm member 23a, and can be engaged with the forward-side locking member 71 and the backward-side locking member 72 at the ends. And a lock plate 75 having a forward side engaging recess 76 and a reverse side engaging recess 77. Although details will be described later, the lock plate 75 is rotated while being in contact with the cam portion 73 in accordance with the swinging of the offset mechanism 20, a forward-side engaging position of the offset mechanism 20 exceeds a predetermined moving area When the concave portion 76 or the reverse side engaging concave portion 77 is engaged with the forward side locking member 71 or the reverse side locking member 72 and the offset mechanism unit 20 moves from the position beyond the predetermined movement region into the predetermined movement region, The engagement of the forward side engagement recess 76 or the reverse side engagement recess 77 with the forward side locking member 71 or the reverse side locking member 72 is released.

  The cam part 73 is attached to the rear right side of the link member 25, and extends to the right front side. The second guide surface 73b extends to the left front side by connecting to the front end of the first guide surface 73a. The third guide surface 73c is connected to the front end portion of the second guide surface 73b and extends to the left side, and the fourth guide surface 73d is connected to the left end portion of the third guide surface 73c and extends to the left diagonally rear side. ing. Details of each guide surface will be described later.

  The forward side locking member 71 is attached to the distal end portion of the projecting portion 51a that extends in the lateral direction on the proximal end side of the frame portion 51 and extends upward. The reverse side locking member 72 extends upward coaxially with the pivot position of the second link member 44 to the frame portion 51. On the other hand, as shown in FIG. 7A (side view) and FIG. 7B (plan view), the lock plate 75 is connected to the plate body portion 78 extending in the lateral direction and the front side of the plate body portion 78. A rotation support portion 79 that extends upward, bends, and extends rearward is provided. The connecting arm member 23a is inserted between the plate main body 78 and the rotation support portion 79, the rotation pin 80 is inserted through them, and the lock plate 75 uses the central axis of the rotation pin 80 as the rotation fulcrum Q. The connecting arm member 23a is supported so as to be rotatable in the left-right direction.

The forward-side engagement recess 76 and the reverse-side engagement recess 77 are provided in the plate main body portion 78 of the lock plate 75. The forward-side engagement recess 76 is formed at the right front end of the plate body 78, and the reverse-side engagement recess 77 is formed at the left rear end of the plate body 78. As will be described in detail later, the forward engagement recess 76 can be operated by the working unit 50 by the forward movement of the traveling machine body by the expansion and contraction of the telescopic cylinder 41 and the swing of the offset mechanism unit 20 shown in FIG. It engages with the forward-side locking member 71 in a state where it is installed at the forward movement work position. On the other hand, the reverse engagement recess 77 is in a reverse operation position where the working unit 50 can work by the backward movement of the traveling machine body by the expansion and contraction of the telescopic cylinder 41 and the swing of the offset mechanism unit 20 shown in FIG. It engages with the reverse side locking member 72 in the installed state. A roller shaft 81 projects from the left end portion of the rotation support portion 79, and rotates at the upper end portion of the roller shaft 81 in contact with the guide surfaces of the cam portion 73 shown in FIG. 82 is provided.

  The lock plate 75 rotates in the left-right direction with the central axis of the rotation pin 80 as the rotation fulcrum Q while the rotation roller 82 contacts the guide surface of the cam portion 73. The turning operation of the lock plate 75 will be described later.

Next, the relationship between the operation of the lock mechanism 70 and the swing of the offset mechanism unit 20 will be described. As shown in FIG. 4A again, the offset mechanism section 20 is in a state where the expansion / contraction cylinder 41 has a predetermined extension amount and the expansion / contraction movement is restricted so that the frame section 51 extends parallel to the right and left direction. When rocking at a rocking angle θ1 to the left with respect to the work direction axis O2, the rotating roller 82 rotates while contacting the front side along the first guide surface 73a of the cam portion 73 and moves behind the second guide surface 73b. Move to the end. At this time, the forward side engagement recess 76 is in a state of being engaged with the forward side locking member 71. That is, when the rotating roller 82 is moving along the first guide surface 73a, the forward side engaging recess 76 is engaged with the forward side locking member 71, that is, the working unit 50 is rotated. You are in a restricted lock state.

Then, as shown in FIG. 4B (plan view), when the offset mechanism unit 20 swings beyond the swing angle θ1 with a swing angle θ2 further leftward with respect to the work direction axis O2, The rotating roller 82 rotates while contacting the front side along the second guide surface 73b of the cam portion 73 and moves to the front end portion of the second guide surface 73b. At this time, the rotation roller 82 is urged in the front direction by the second guide surface 73b that moves as the offset mechanism unit 20 swings, and the lock plate 75 has the rotation fulcrum Q as the rotation center in the direction of arrow A. To turn. For this reason, the advancing side engaging recess 76 moves in a direction away from the advancing side locking member 71, and the engaged state of the advancing side engaging recess 76 with respect to the advancing side locking member 71 is released. Then, as shown in FIG. 4C (plan view), when the offset mechanism portion 20 swings further with a swing angle θ3 on the left side with respect to the work direction axis O2, the rotating roller 82 has a cam portion 73. The third guide surface 73c rotates while contacting the left side and moves to the left end of the third guide surface 73c. At this time, the rotating roller 82 is urged in the front direction by the third guide surface 73c that moves as the offset mechanism unit 20 swings, and the lock plate 75 further rotates in the direction of the arrow A to move forwardly. The mating recess 76 moves in a direction further away from the forward side locking member 71. As a result, the working unit 50 is in a state where the rotation restriction is completely released.

  When the telescopic cylinder 41 is extended in this state, as shown in FIG. 5A (plan view), the first link member 43 of the rotation link mechanism 42 rotates in the arrow B direction (clockwise). The frame portion 51 rotates in the direction of arrow B via the second link member 44. When the telescopic cylinder 41 is further extended to reach the fully extended state, as shown in FIG. 5B (plan view), the first link member 43 is further rotated clockwise and the second link member 44 is rotated. The frame portion 51 is rotated to a position extending parallel to the left side in the left-right direction. As a result, as shown in FIG. 8 (plan view), the working unit 50 moves to the position in the backward direction of the left side of the traveling machine body 90 and the direction thereof is reversed. At this time, as shown in FIG. 5B (plan view), the forward side locking member 71 rotates in the direction of arrow B with the rotational fulcrum O of the frame portion 51 as the center of rotation, so that the forward side engagement is achieved. While moving to a position away from the recess 76, the reverse side locking member 72 rotates in the direction of arrow B around the rotation fulcrum O of the frame portion 51 and moves to a position close to the reverse side engagement recess 77. To do. At this time, the reverse side engaging recess 77 and the reverse side locking member 72 are in a non-engaged state.

Then, as shown in FIG. 6 (plan view), when the offset mechanism 20 swings in the direction of arrow B with a swing angle θ4 further leftward with respect to the work direction axis O2, the rotating roller 82 is moved to the cam portion. It rotates while contacting the left side along the fourth guide surface 73d of 73 and moves to the middle part of the fourth guide surface 73d. At this time, the rotating roller 82 rotates while contacting the left side of the fourth guide surface 73d as the offset mechanism unit 20 swings, and the lock plate 75 rotates in the direction of arrow C to engage the reverse side. The recess 77 and the reverse side locking member 72 are locked, and as a result, the working unit 50 is in a locked state in which its rotation is restricted.

When the offset mechanism 20 swings further in the direction of the arrow B beyond the swing angle θ4, the rotating roller 82 rotates to the left while contacting along the fourth guide surface 73d of the cam portion 73, so that the fourth Moving to the left end of the guide surface 73d, the lock plate 75 further rotates in the direction of arrow C, and the reverse side engagement recess 77 is maintained in a state of being locked to the reverse side locking member 72. At this time, as shown in FIG. 9A (plan view), the work unit 50 is moved to a work position (left offset work position PL) where the work unit 50 can perform the smearing work while the traveling body 90 moves backward. Moving. As described above, the offset mechanism unit 20 is swung to the left side and the working unit 50 is rotated, so that the working unit 50 is reversed and reversed so that the rotation of the working unit is restricted. It can be moved to position PL.

On the other hand, the working unit 50 is installed at a working position (right offset working position PR) where the working unit 50 can perform the dashing work while the traveling machine body 90 moves forward from the state where the working unit 50 is installed at the left offset working position PL. For this purpose, as shown in 9 (b) (plan view), the offset mechanism 20 may be swung to the right. That is, the working unit 50 is temporarily released from the rotation restriction by the lock mechanism 70 shown in FIG. 4A in response to the right-side swing of the offset mechanism unit 20, and the working unit 50 has the rotation fulcrum O as the rotation center. The working unit 50 is rotated counterclockwise and reversed, and the working unit 50 moves to the right offset working position PR while being restricted by the locking mechanism 70 according to the right swinging of the offset mechanism unit 20. As described above, the offset mechanism unit 20 is swung to the right side, and the working unit 50 is rotated, so that the working unit 50 is reversed and reversed so that the rotation of the working unit is restricted. It can be moved to the position PR.

As shown in FIGS. 4A and 6 again, the lock plate 75 of the lock mechanism 70 has a position where the swing angle θ of the offset mechanism portion 20 has a swing angle θ1 on the left side with respect to the working direction axis O2. In the region where the offset mechanism portion 20 swings to the right side, it is engaged with the forward-side locking member 71 and has a swing angle θ4 on the left side with respect to the position having the swing angle θ1 and the work direction axis O2. Within the range in which the offset mechanism section 20 swings inside the position (predetermined movement region W), the forward locking member 71 is disengaged, and the swing angle θ of the offset mechanism section 20 is the work direction axis O2. On the other hand, in the region where the offset mechanism 20 swings to the left from the position having the swing angle θ4 on the left side, the reverse-side locking member 72 is engaged. In other words, when the offset mechanism unit 20 swings beyond the predetermined movement region W, the working unit 50 is in a locked state when the lock plate 75 is engaged with the forward-side locking member 71 or the reverse-side locking member 72. When the offset mechanism section 20 swings into the predetermined movement area W from a position beyond the predetermined movement area W, the engagement state of the lock plate 75 with the forward side locking member 71 or the reverse side locking member 72 is changed. Released and unlocked.

That is, the lock mechanism 70 is operated in conjunction with the swinging of the offset mechanism unit 20 to restrict the rotation of the working unit 50 or allow the restricted working unit 50 to rotate. For this reason, in the plastering machine 1 according to the present invention, there is no need for a lock operation for the operator to lock or unlock the rotation of the working unit 50, and the trouble of the lock operation is eliminated. be able to. When the offset mechanism unit 20 moves beyond the predetermined movement region W, the rotation of the working unit 50 is locked, and when the offset mechanism unit 20 moves from the position beyond the predetermined movement region W into the predetermined movement region W, the work is performed. Since the part 50 is in the unlocked state, the work part 50 is always locked when the work part 50 is painted. For this reason, the work part 50 at the time of a smearing work can be reliably made into a locked state, As a result, the smearing work by the work part 50 can be performed in comfort.

[Second Embodiment]
Next, a second embodiment of the offset working machine according to the present invention will be described. In the second embodiment, a ditcher that is an example of an offset working machine will be described. In the second embodiment, only differences from the first embodiment will be described, and the same reference numerals will be given to the same aspect portions as those in the first embodiment, and the description thereof will be omitted.

  As shown in FIG. 10, the grooving machine 100 has a working portion 101 capable of grooving attached to the tip of the frame portion 51. The working unit 101 includes a main body frame 102 that is attached to the distal end portion of the frame portion 51 and extends downward, and a grooved body 103 that is rotatably attached to the main body frame 102. The grooving body 103 includes a rotatable rotation shaft 104 extending in the vertical direction and a spiral blade body 105 formed on the outer surface of the rotation shaft 104. Power is transmitted to the rotating shaft 104 via a winding transmission mechanism in the frame portion 51. Further, the working unit 101 is provided with a soil discharge mechanism (not shown) for discharging the soil discharged by the spiral blade body 105 of the groove body 103 to the outside from the upper part of the groove body 103.

  By providing the working portion 101 capable of such a grooving operation at the distal end portion of the frame portion 51, the working portion 50 including the work main body portion 54 capable of performing the above-described smearing operation shown in FIG. The effect similar to the case where it is provided at the distal end of the work piece, that is, the lock work for making the rotation of the work part 101 locked or unlocked by the operator is unnecessary, and the work part 101 is rotated during the digging work. The locked state can be ensured, and the effect that the digging operation by the working unit 101 can be performed with confidence can be obtained.

1 is a perspective view of a glazing machine according to a first embodiment of the present invention. A plan view of this wrinkle coater is shown. The side view of the lock mechanism equivalent to the II arrow in FIG. 2 is shown. The top view for demonstrating operation | movement of this locking mechanism is shown. The top view for demonstrating operation | movement of a locking mechanism is shown. The top view for demonstrating operation | movement of a locking mechanism is shown. The lock plate of a lock mechanism is shown, the figure (a) is a side view of a lock plate, and the figure (b) is a top view of a lock plate. The top view of the glazing machine for demonstrating operation | movement of a lock mechanism and an offset mechanism part is shown. The top view of the glazing machine for demonstrating operation | movement of a lock mechanism and an offset mechanism part is shown. The top view of the ditcher concerning the 2nd Embodiment of this invention is shown.

Explanation of symbols

1 Spider coater (offset work machine)
DESCRIPTION OF SYMBOLS 10 Mounting part 20 Offset mechanism part 21 Offset frame 23a Connection arm member 25 Link member 40 Connection mechanism 41 Telescopic cylinder (rotation actuator)
50, 101 working unit 55 heaven field processing unit (pre-processing unit)
59 Pre-processing part 63 Adjusting part 70 Locking mechanism 71 Advance side locking member (locking member)
72 Reverse side locking member (locking member)
73 Cam part 73a 1st guide surface (guide surface)
73b Second guide surface (guide surface)
73c Third guide surface (guide surface)
73d Fourth guide surface (guide surface)
75 Lock plate 76 Advance side engagement recess (engagement recess)
77 Reverse-side engagement recess (engagement recess)
82 Rotating roller 90 Traveling machine body 100 Grooving machine (offset working machine)
103 Groove body (groove section)
O Rotation fulcrum W Predetermined movement area

Claims (8)

A mounting portion mounted on the traveling machine body, an offset mechanism movable in the left-right direction from the mounting portion, and a rotation fulcrum provided on the moving end side of the offset mechanism, with the rotation fulcrum as a rotation center in the horizontal direction A working unit that is rotatably disposed and performs an offset operation by forward and backward movements of the traveling machine body and power transmitted from the traveling machine body, and is connected between the offset mechanism and the working part, and the offset mechanism A connection mechanism that holds the working direction of the working unit in a predetermined direction with respect to the movement of the moving unit and rotates the working unit with respect to the turning fulcrum by operation of a turning actuator
When the offset mechanism is moved and exceeds a predetermined movement area in a state where the working direction of the working unit is held in a predetermined direction by the coupling mechanism, the engagement provided on the working unit side. Engage with the stop member to restrict the rotation of the working portion, and when the offset mechanism moves from the position beyond the predetermined movement area into the predetermined movement area, the engagement with the locking member is released. An offset working machine having a lock mechanism that allows rotation of the working part.   The offset mechanism includes an offset frame having one end side rotatably connected to the mounting portion and the other end side rotatably connected coaxially with the rotation center axis of the rotation fulcrum, along the offset frame A parallel link mechanism having a link member connected in parallel and having a link member connected at one end to the mounting portion so as to be rotatable and connected at the other end to the connection mechanism. Item 4. The offset working machine according to Item 1.   The lock mechanism includes a cam portion provided on the link member, an engagement recess that is rotatably provided on the connection arm member, and is engageable with the locking member at an end, and the offset mechanism When the position of the offset mechanism exceeds the predetermined movement region, the engaging recess engages with the locking member, and the offset mechanism is 3. A lock plate for releasing the engagement of the engaging recess with the locking member when moving into the predetermined moving area from a position beyond the moving area. Offset work machine. By the operation of the rotary actuator, the working direction of the working portion, according to claim 3, characterized in that it is reversed from the forward direction of one side of the left and right sides of the traveling machine body in the backward direction of the other side Offset work machine. The locking member has a forward side locking member and a reverse side locking member provided on the working part side,
The engagement concave portion of the lock plate is formed on the forward side in a state where the working unit is installed at a forward work position where the work can be performed by the forward movement of the traveling machine body by the operation of the rotation actuator and the movement of the offset mechanism. A forward engaging recess that can be engaged with the locking member, and the working portion is installed at a backward working position where the traveling body can work by the backward movement by the operation of the rotating actuator and the movement of the offset mechanism. The offset working machine according to claim 4, further comprising a reverse-side engagement recess that is engageable with the reverse-side locking member in a state.   The offset working machine according to any one of claims 3 to 5, wherein the lock plate includes a rotating roller that can rotate while contacting a guide surface of the cam portion.   The offset working machine according to any one of claims 1 to 6, wherein the working unit is a glazing working unit including a preprocessing unit and a trimming unit.   The offset working machine according to claim 1, wherein the working unit is a grooving working unit including a grooving unit.

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