JP5717778B2 - Offset work machine - Google Patents

Description

  The present invention relates to an offset working machine having a working unit that is attached to a traveling machine body and receives power from the traveling machine body to work a position offset laterally with respect to a traveling position of the traveling machine body.

  A work machine that is attached to a traveling machine body such as a tractor and performs various continuous linear operations in the field along the traveling direction of the traveling machine body is a general machine for agriculture or civil engineering, and depends on the type of work There are various working machines. Among such working machines, offset working machines that work at positions offset laterally with respect to the traveling position of the traveling machine body are known as glazing machines, groove forming machines, mowing machines, etc. due to the special nature of the work. ing.

  In particular, the plastering machine has been attracting attention in recent years as it achieves the mechanization of the plastering work that requires a great deal of time and labor, and forms the coral over the outer edge of a wide field. The basic configuration of the hail coater is mounted on the rear part of the traveling machine body, and includes a mounting part including an input shaft to which power from the traveling machine body is input, and a power transmission mechanism that transmits power from the input shaft, and is transmitted. The working part is equipped with a pre-treatment part that cuts a part of the old paddle and fills the ground It has a trimming part that is applied to the old shears that have been cut into the soil.

  Such an offset work machine performs a straight-ahead operation at an offset position along the travel of the traveling machine body. However, when performing a straight-ahead work along a side of the field in a rectangular field, the offset work machine is optimal for the traveling machine body. It is necessary to adjust the offset amount during work to set the offset position or to keep the offset work machine going straight, and when the tip of the traveling machine body reaches the end of the field, the subsequent straight work can be performed. There is a common problem that it becomes impossible.

  In particular, in a plastering machine that performs a linear plastering work along the outer edge of a rectangular field, it becomes impossible to perform the pasting work from the point when the tip of the traveling machine body reaches the end of the field. The problem arises that an unworked part always remains at the corner of the rectangular field. In order to solve this problem, the working unit is moved to an offset position on the opposite side to that during normal work, and the front-rear relationship is reversed (reverse reversed) so that the traveling machine body moves backward relative to the unworked portion at the corner. A coater with a reversing reverse mechanism has been developed.

  In general, such a hull coater has a configuration in which the working unit is pivotally attached to the tip of an offset frame that is pivotable in the width direction of the machine body in order to move the working unit to the side of the traveling machine body. However, if the offset frame can be rotated 180 degrees from one side to the other in the body width direction with one telescopic cylinder, the working unit can be easily moved from the forward working position to the reverse working position. Is possible. However, it is structurally difficult to rotate the offset frame 180 degrees with only one telescopic cylinder. For this reason, some conventional lacquering machines are provided with a reversing mechanism such as a link type that reverses the direction of the working unit as the offset frame rotates (see Patent Documents 1 and 2).

  As shown in FIGS. 15 (a) (plan view) and 15 (b) (plan view), the brush coater 70 described in Patent Document 1 has one end of a fixed machine frame 71 connected to the rear part of the traveling machine body 90. A first pivoting arm body 72 that is pivotably connected to the other side and pivotable at the other end, and is shorter than the first pivoting arm body 72 and is pivotable to one end side of the fixed machine frame 71 And a second rotating arm body 74 that is rotatably connected to a movable machine frame 73 that supports the working unit 77 at the other end, and one end that is rotatably attached to the turner frame 71. A rotating body 75 whose side is rotatably attached to the proximal end side of the first rotating arm body 72 and a rod-side end portion that is attached to the rotating body 75 and a bottom-side end portion that can be rotated to the stationary machine frame 71. And a hydraulic cylinder 76 attached to the cylinder. When the cylinder 76 expands and contracts, the rotating body 75 rotates according to the expansion / contraction operation of the cylinder 76, the two rotating arm bodies 72 and 74 rotate, and the working unit 77 advances the traveling machine body 90. Then, the working unit 77 reversed by the reverse travel of the traveling machine body 90 from the normal work position Pt for performing the smearing operation automatically moves to the reversal work position Pr for performing the smearing operation.

  In addition, as shown in FIGS. 16 (a) (plan view) and 16 (b) (plan view), the plastering machine 80 described in Patent Document 2 has one end side of a fixed machine frame 81 connected rotatably. The other end side is provided between the connecting arm body 82 that can rotate, the working section 83 that is rotatably attached to the tip of the connecting arm body 82, the fixed machine frame 81, and the connecting arm body 82. The link-type interlocking mechanism 84 that moves the part 83 between the forward work position Pt and the storage position and reverses the work part 83 between the storage position and the reverse work position Pr, and the work part for the fixed machine frame 81 83, and an attachable / detachable body attaching portion 85 capable of adjusting the offset position.

  The link-type interlocking mechanism 84 includes a first link 84a that is attached to the lower side of the connecting arm body 82 so that one end of the link-type interlocking mechanism 82 can turn in the horizontal direction and the other end extends in a substantially circular arc shape, and the other end of the first link 84a. A second link 84b extending in a substantially linear shape, having one end rotatably attached to the side and the other end rotatably attached to a movable machine frame 86 that rotatably supports the working unit 83; 84a and a second link 84b, and a guide hole portion 87a provided in the guide plate portion 87 for guiding the movement of the guide shaft 84c that rotatably connects the guide plate portion 87. The guide plate portion 87 is a fixed machine frame. It is attached to 81 and protrudes rearward. The connection arm body 82 is rotatable by receiving power from a drive motor 88 attached to the fixed machine frame 81, and when the drive motor 88 is driven, the connection arm body 82 and the link type interlock mechanism 84 cooperate. Due to the action, the working unit 83 moves between the forward working position Pt and the reverse working position Pr.

  A plurality of holes 85 a having a predetermined interval in the left-right direction are provided in the detachable body attached part 85, and the two selected holes 85 a and the fixing machine frame 81 are attached to and detached from these holes 85 a. The detachable body 89 is attached to the detachable body attached portion 85 by bolts or the like inserted into the detachable body 89 that can be attached, and the offset position of the working portion 83 can be adjusted.

JP-A-2005-52121 JP 2004-254617 A

  In the conventional coater described in Patent Document 1, the two rotating arm bodies rotate by the expansion and contraction operation of one cylinder, and the working unit automatically moves from the normal working position to the reverse working position. However, if the cylinder is expanded or contracted to adjust the offset position of the working part at each working position, there is a problem that the orientation of the working part changes and a desired trimming work cannot be performed.

  On the other hand, in the conventional brush coater described in Patent Document 2, when adjusting the offset position of the working part, it is necessary to manually change the relative position between the detachable body attached part and the detachable body. There is a problem that the work efficiency is lowered due to the interruption of the trimming work.

  The present invention has been made in view of such a problem, and the cylinder can move the working section from the normal working position to the reverse working position, and the working section offset position can be adjusted at each working position. It is an object of the present invention to provide an offset working machine capable of continuous adjustment in a stepless manner.

In order to solve such a problem, the present invention has the following features. One of the features is that an offset working machine (for example, an implementation) having a working unit that is attached to a traveling machine body and receives power from the traveling machine body and works at an offset position that is offset laterally with respect to the traveling position of the traveling machine body. In the embodiment, the working unit is rotatably supported on the tip side of the offset mechanism unit that is rotatably supported with respect to the mounting unit that is mounted on the traveling machine body. The working part that is reversed when the traveling machine body is moved backward from the normal working position where the working part works when the traveling machine body moves forward is only required to extend and retract the expansion mechanism part that changes the rotation angle of the offset mechanism part. and moving to the inverting working position for working, and performing a stepless gradation offset position of your Keru working unit in the working position of the normal working position and inverting the working position settling.

  According to the offset working machine according to the present invention, by having the above features, the working unit can be moved from the normal working position to the reversing working position by the cylinder, and the offset position of the working unit at each working position is stepless. An offset working machine capable of continuous adjustment can be provided.

1 is a plan view of a wrinkle coater according to an embodiment of the present invention. The back view of the glazing machine concerning one embodiment of the present invention is shown. The operation | movement explanatory drawing of the glazing machine when moving the operation | work part of the glazing machine concerning this invention is shown. The operation | movement explanatory drawing of the glazing machine when moving the operation | work part of the glazing machine concerning this invention is shown. The operation | movement explanatory drawing of the glazing machine when moving the operation | work part of the glazing machine concerning this invention is shown. 2 shows an offset frame of a plastering machine according to the present invention, in which FIG. 1A is an enlarged plan view of the tip end of the offset frame, and FIG. The locking device provided in the offset mechanism part of the coater concerning one embodiment of the present invention is shown, and the figure (a) is an explanatory view in plane view of the offset mechanism part containing a locking device, b) is a partial cross-sectional arrow view of a portion corresponding to the arrow VII in FIG. The perspective view of the link arm part of the rotation support arm of the coating machine concerning this invention is shown. FIG. 3 is a plan view of the hulling machine for explaining the operation of the hulling machine when the working unit in the hulling machine according to the embodiment of the present invention is moved from the normal work position to the reversing work position. FIG. 3 is a plan view of the hulling machine for explaining the operation of the hulling machine when the working unit in the hulling machine according to the embodiment of the present invention is moved from the normal work position to the reversing work position. FIG. 3 is a plan view of the hulling machine for explaining the operation of the hulling machine when the working unit in the hulling machine according to the embodiment of the present invention is moved from the normal work position to the reversing work position. The explanatory view in the planar view of the guide member provided in the offset mechanism part of the coater concerning other embodiments of the present invention is shown. The explanatory view in the planar view of the guide member provided in the offset mechanism part of the coater concerning other embodiments of the present invention is shown. The explanatory view in the planar view of the hull coater for demonstrating operation | movement of the hull coater when moving the operation | work part in the hull coater concerning other embodiment of this invention from a normal work position to a reverse work position is shown. . FIG. 1A is a plan view of a surface coating machine in a state where the working unit is moved to the normal working position, and FIG. 2B is a diagram illustrating the working unit moved to the reverse working position. It is a top view of the glazing machine in a state. FIG. 4A is a plan view of a conventional pad coater in a state where the working unit has moved to the normal working position, and FIG. 4B shows the working unit in the reverse working position. It is a top view of the haze coater in the moved state.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a coater according to the present invention will be described below with reference to FIGS. In the present embodiment, a plastering machine that is an example of an offset working machine will be described. In addition, the offset working machine includes a ditching machine. For convenience of explanation, the directions of the arrows shown in FIG. 1 (plan view) will be described below as the front-rear direction and the left-right direction. In addition, in each of the drawings of FIGS. 3, 4, 5, 7A, 11, 12, and 13, it is difficult to understand the shape of the member if the drawings are drawn in consideration of the vertical position of the member. Regardless of the vertical position of the member, the member is described using a solid line or a virtual line.

  As shown in FIGS. 1 and 2 (rear view), 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. It is intended to perform the haze painting work according to the reverse. The glazing machine 1 includes a mounting portion 5 that includes an input shaft 6 to which power from the traveling machine body 90 is input, an offset mechanism portion 20 that is rotatably supported with respect to the mounting portion 5, and an offset mechanism portion 20. The offset mechanism unit 20 can be swung in the left-right direction by an expansion / contraction mechanism unit 10 provided between the mounting unit 5 and the power transmitted from the input shaft 6 by being disposed on the front end side of the offset mechanism unit 20. And a working unit 60 for performing an offset work.

  The mounting portion 5 includes a hitch frame 7 extending in the left-right direction, and the hitch frame 7 is configured to be connectable to a three-point link connection mechanism provided at the rear portion of the traveling machine body 90. A gear box 8 is provided at the lower center of the hitch frame 7 in the left-right direction, and the input shaft 6 described above is provided in the gear box 8. Power is transmitted to the input shaft 6 from a PTO shaft provided in the traveling machine body 90 via a transmission shaft (not shown).

  The offset mechanism unit 20 is pivotally connected to the hitch frame 7 at its base end side and extends rearward, and is arranged along the right side of the offset frame 21 so that its base end side is the hitch frame 7. A link member 25 is rotatably connected to the right end portion, and a rotation support arm 23 is rotatably connected between the distal end side of the offset frame 21 and the distal end portion of the link member 25.

  As shown in FIG. 3A (explanatory view), the offset frame 21 has a frame main body portion 21a having a hollow inside and a connection support portion 21b provided at the distal end portion of the frame main body portion 21a. Thus, the offset frame 21 can swing in the left-right direction by the expansion and contraction of the expansion / contraction mechanism 10 pivotally connected between the distal end side of the connection support portion 21 b of the offset frame 21 and the left end of the hitch frame 7. A power transmission mechanism (not shown) is provided in the frame main body 21 a of the offset frame 21, and the power transmitted from the traveling machine body 90 to the input shaft 6 by this power transmission mechanism is applied to the front end side of the frame main body 21 a of the offset frame 21. It is configured to be able to transmit to a driven shaft 22 that is rotatably arranged.

  The distal end portion of the link member 25 is pivotally attached to the right end of a pivot support arm 23 that is pivotally provided at the distal end portion of the frame main body portion 21a. The rotation support arm 23 includes a parallel link frame portion 23a extending in the left-right direction and a link arm portion 23b extending from the left end portion of the parallel link frame portion 23a to the mounting portion 5 side. The base end side is rotatably attached to the offset frame 21. The offset mechanism section 20 configured in this way forms a parallel link mechanism by the offset frame 21, the link member 25, the hitch frame 7 and the rotation support arm 23.

  In addition, as shown in FIG.1 and FIG.2, the expansion-contraction mechanism part 10 arrange | positions in series with each bottom side edge part of the two electric hydraulic cylinders 11 adjoining each other, and each bottom side edge part mutually Are connected and integrated through a cylindrical connecting member 12 or a bolt, and the rod side end of the front electric hydraulic cylinder 11 is pivotally connected to the hitch frame 7 and the rear electric type. The rod-side end portion of the hydraulic cylinder 11 is pivotally connected to the distal end portion of the connection support portion 21 b of the offset frame 21. Further, the telescopic mechanism 10 may be constituted by one hydraulic cylinder 13 shown in FIG. 3A having a stroke larger than the stroke of the electric hydraulic cylinder 11. Further, the expansion / contraction mechanism unit 10 only needs to be disposed along the offset mechanism unit 20, and may be disposed at any position above the offset mechanism unit 20, below, or at the same height as the top and bottom. .

  As shown in FIG. 6 (a) (schematic plan view) and FIG. 6 (b) (schematic side view), the lower part of the driven shaft 22 provided at the front end of the frame body 21a is coaxial with this. The power transmission shaft 15 that is disposed and extends downward is connected, and the power transmission shaft 15 rotates as the driven shaft 22 rotates. A cylindrical connecting portion 17 disposed coaxially with the power transmission shaft 15 is rotatably attached to the frame main body portion 21a at the lower end of the front end of the frame main body portion 21a. The connecting portion 17 is not coupled to the power transmission shaft 15 and is rotatable about the power transmission shaft 15 as a rotation fulcrum O. A base end portion of a transmission support case 61 that is a part of the working portion 60 is connected to the connecting portion 17. That is, the working unit 60 can rotate with the center of the power transmission shaft 15 provided in the offset mechanism unit 20 as a rotation fulcrum O. Although the structure in which the driven shaft 22 and the power transmission shaft 15 are connected has been described, the driven shaft 22 may also serve as a power transmission shaft. 6 (a) and 6 (b) schematically show the front end side of the frame main body 21a. In FIGS. 6 (a) and 6 (b), the frame main body 21a is located at a different position. It is described in.

  In the transmission support case 61, as shown in FIG. 3 (a), from the front end side to the base end side, a heaven field processing unit 62 that cuts the upper part of the old ridge formed along the periphery of the field, A pre-processing unit 64 for embedding the cut soil and a trimming unit 66 for applying the piled soil on the cut old iron are disposed. A power transmission mechanism (not shown) is built in the transmission support case 61, and this power transmission mechanism receives power from the power transmission shaft 15 and transmits power to the heaven processing unit 62, the preprocessing unit 64, and the trimming unit 66. It is configured to be possible.

  The celestial processing unit 62 includes a rotatable celestial processing rotor 62a. The heaven processing rotor 62a is connected to and supported by the transmission support case 61 through the heaven power transmission case 63. A power transmission mechanism (not shown) is built in the heaven power transmission case 63 so that the power transmitted to the power transmission mechanism of the transmission support case 61 via this power transmission mechanism is transmitted to the heaven processing rotor 62a. It has become.

  The pretreatment unit 64 has a rotatable tiller rotor 64a. The power of the tilling rotor 64a is transmitted through a power transmission mechanism in the transmission support case 61.

  The trimming portion 66 includes a polyhedral drum 66a that is rotatably supported by the transmission support case 61, and a cylindrical portion 66b that is attached to the right end portion of the polyhedral drum 66a and extends in the lateral direction. The rectifying section 66 is adapted to transmit power via a power transmission mechanism in the transmission support case 61.

  There is a link mechanism between the transmission support frame 65 and the rotation support arm 23 connected to the transmission support case 61 that supports the heaven field processing unit 62, the preprocessing unit 64, and the trimming unit 66 thus configured. A portion 30 is provided. The link mechanism portion 30 cooperates with the guide member 40 attached to the lower surface of the offset frame 21 to maintain the orientation of the working portion 60 constant regardless of whether the offset mechanism portion 20 swings left and right. The function of reversing the direction of the portion 60 is provided.

  The guide member 40 includes, for example, a first guide plate 40a extending along the right side surface of the offset frame 21, a second guide plate 40b extending along the left side surface of the offset frame 21, and a proximal end side of the second guide plate 40b. To the right side of the offset frame 21 and a fourth guide plate 40d connected between the front end portions of the first guide plate 40a and the second guide plate 40b. A reversing groove 41 extending along the longitudinal direction of the offset frame 21 is formed between the first guide plate 40a and the second guide plate 40b with a predetermined interval, and the first guide plate 40a and the third guide plate are formed. A normal offset groove 43 is formed between the inner end face of 40c and communicates with the inversion groove 41 and extends to the right in the width direction of the offset frame 21 and opens in the vicinity of the right side of the offset frame. A reverse offset groove 45 that communicates with the reverse groove 41 and extends to the left side in the width direction of the offset frame 21 is formed between each tip side portion of the second guide plate 40b and the inner end face of the fourth guide plate 40d. . These grooves 41, 43, 45 have such a width that a joint 31 (to be described later) of the link mechanism 30 can move. The guide member 40 may be any member as long as it has these communicating grooves 41, 43, and 45. For example, the guide member 40 is formed by forming the grooves 41, 43, and 45 into a single member, or a plurality of members as described above. It may be formed by. Further, the guide member 40 may be provided on the upper surface of the offset frame 21 in addition to the lower surface of the offset frame 21 according to the attachment position of the link mechanism portion 30.

  Normally, the offset groove 43 extends from the rotation fulcrum O of the working unit 60 with respect to the offset mechanism unit 20 to the guidance start position Pa where the reversing groove 41 guides the movement of the joint 31 and starts the operation of reversing the direction of the working unit 60. It is formed as a curve or a straight line including a part of an arc whose distance is radius r1. When the length of the normal offset groove 43 is shortened with respect to the reverse groove 41, the normal offset groove 43 passes through the center of the joint 31 moved to the guide start position Pa and the rotation fulcrum O. You may make it extend linearly in the direction orthogonal to the virtual line which connects.

  The reverse offset groove 45 is a guide end position Pe at which the movement of the joint 31 is completely guided by the reverse groove 41 from the rotation fulcrum O with respect to the offset mechanism portion 20 of the working unit 60 (that is, the joint 31 moved to the end of the reverse groove 41). It is formed as a curve or straight line including a part of an arc whose radius to the center position) is a radius r2. When the length of the reverse offset groove 45 is shortened with respect to the reverse groove 41, the reverse offset groove 45 passes through the center of the joint 31 moved to the guide end position Pe and the rotation fulcrum O. You may make it extend linearly in the direction orthogonal to the virtual line which connects. The position of the normal offset groove 43 and the length of the reversing groove 41 will be described later.

  A hook guide 47 that extends outward in the width direction of the guide member 40 is integrally provided on the left side of the second guide plate 40 b of the guide member 40. The hook guide 47 is used when locking and unlocking a hook 51 of the locking device 50 described later, and a guide plate 48 extending from the second guide plate 40b and a guide surface 49 formed on the rear side of the guide plate 48. It has. Details of the locking device 50 will be described later.

  The link mechanism unit 30 is a four-node link mechanism including four nodes, and a portion from a rotation fulcrum O of the working unit 60 to a position having a predetermined distance described later on the distal end side of the transmission support frame 65 is a first node. 30a, the first link member 32 pivoted in the left-right direction with the tip of the first joint 30a as a pivot point is referred to as a second joint 30b, and one end of the first link member 32 pivots to the tip of the first link member 32. The second link member 33 that is connected and freely pivotable in the left-right direction and whose other end is pivotally connected to the distal end portion of the link arm portion 23b of the pivot support arm 23 is referred to as a third joint 30c. The link arm portion 23b is configured as a fourth node 30d. Note that the length of the first node 30a is the distance from the rotation fulcrum O of the working unit 60 to the rotation fulcrum Q between the first node 30a and the second node 30b, and from the rotation fulcrum Q to the second node 30b. It is set on the condition that the sum of the distance from the third node 30c to the rotation fulcrum S is larger than the distance between the rotation fulcrum O and the rotation fulcrum S.

  The first node 30a of the link mechanism unit 30 functions as a driven node, the second node 30b and the third node 30c function as an intermediate node, and the fourth node 30d functions as a driving node. The second joint 30b is bent so as to protrude rightward in plan view and extends in the front-rear direction, and the joint 31 serving as the pivot fulcrum S of the second joint 30b and the third joint 30c is connected to the transmission support frame by the lock device 50. Arranged so that the turning radius of the joint 31 that moves as the offset mechanism 20 swings while the 65 is locked to the turning support arm 23 is the same as the radius of curvature r1 of the normal offset groove 43. Has been. For this reason, as shown in FIG. 3B (descriptive drawing), when the offset mechanism 20 swings to the left side with the transmission support frame 65 locked to the rotation support arm 23, the joint 31 will normally have an offset groove. 43 can move along the groove.

  Further, as shown in FIG. 4C (description), the joint 31 serving as the pivot fulcrum Q between the first joint 30a and the second joint 30b has the above-described joint 31 at the left end of the normal offset groove 43, That is, it is arranged so as to be located on the right side with respect to an imaginary line connecting the center of the joint 31 and the rotation fulcrum O of the working unit 60 when moved to the guidance start position Pa. For this reason, in FIG.4 (c), the joint 31 moves to the back side with respect to the mounting part 5 along the inversion groove 41 mentioned above, and the 2nd link member 32 moves to the back side as the second link member 32 moves to the back side. A rearward force can be applied to the mounting portion 5, and a moment that rotates the first joint 30 a in the clockwise direction is generated. Accordingly, the working unit 60 can be rotated as shown in FIG.

  Furthermore, the distance between the centers of the joints 31, 34 provided at both ends of the second joint 30 b is such that the joint 34 provided in the first link member 32 moves rearward with respect to the mounting part 5. Has a length necessary for rotating the to the reversal work position Pr. Accordingly, as the joint 31 further moves rearward with respect to the mounting portion 5 along the inversion groove 41, the second joint 30b moves rearward, and connects the first joint 30a and the second joint 30b. 5, the first joint 30 a rotates clockwise, and the second joint 30 b follows the first joint 30 a and rotates clockwise around the joint 34, so that the working unit 60 is shown in FIG. It can be moved to the reversal work position Pr shown in the explanatory diagram). When the working unit 60 rotates with respect to the offset mechanism unit 20, the rotation restriction of the working unit 60 with respect to the offset mechanism unit 20 is released by a lock device 50 described later.

  The locking device 50 is disposed on the side of the transmission support frame 65 of the working unit 60, as shown in FIG. 7A (description) and FIG. 7B (partially section VII arrow view). A lock pin 52 extending in the vertical direction, a plate-like hook 51 extending in the lateral direction that can be pivotally attached to the distal end portion of the link arm portion 23 b of the rotation support arm 23 and can be locked to the lock pin 52, and a hook A roller 53 provided on 51 and rotatably supported above the hook, and a hook guide 47 projecting from a guide member 40 provided on the offset frame 21 and contacting the roller 53 to guide the movement of the hook 51. Have.

  The lock pin 52 is attached to a support plate 65 a protruding from the side of the transmission support frame 65, and moves with the swinging of the offset mechanism unit 20. The hook 51 has a locking projection 51a that is pivotally attached to the distal end portion of the link arm portion 23b and can be locked to the lock pin 52 on the distal end side. The tension spring 54 is connected and is always biased toward the side maintaining the engagement state with the lock pin 52. The tension spring 54 is provided between the base end portion of the hook 51 and the link arm portion 23b, and applies a force to the hook 51 to always rotate the hook 51 counterclockwise in FIG. The roller 53 is a rotating body such as a bearing that is rotatably attached to an upper end portion of a shaft portion 51b that protrudes from the upper surface of the hook 51 shown in FIG. The shaft portion 51b is inserted into a hook rotation restricting hole 26 provided in the plate 24 provided at the tip end portion of the link arm portion 23b shown in FIG. 8 (perspective view). A roller 53 is provided at the tip of the shaft portion 51 b extending from the hook rotation restricting hole 26. The hook rotation restriction hole 26 is a long hole formed in an arc shape extending along the rotation direction of the hook 51, and the shaft portion 51 b contacts the end of the hook rotation restriction hole 26. The rotation of 51 is restricted. In the state of FIG. 7A, the lock pin 52 enters the locking projection 51 a of the hook 51, and the hook 51 is maintained in a state of being engaged with the lock pin 52 by the tension spring 54.

  A hook guide 47 extending from the second guide plate 40 b of the guide member 40 is disposed below the second guide plate 40 b to facilitate contact with the roller 53. The hook guide 47 may be provided so as to extend from the offset frame 21. As shown in FIGS. 7A and 7B, the guide surface 49 of the hook guide 47 includes a concave guide surface portion 49a for guiding the hook 51 to a position where the hook 51 is locked to the lock pin 52, and a concave guide surface portion 49a. A straight guide surface portion 49b that linearly extends from the open end of the hook to the proximal end side of the hook and guides the hook 51 from the lock pin 52 to the unlocked state. The concave guide surface portion 49 a has a curved shape that is recessed toward the proximal end portion of the offset frame 21.

  The linear guide surface portion 49b extends in the width direction of the offset frame 21, and will be further described with reference to FIG. 3B. If the hydraulic cylinder 13 is reduced in the state of FIG. 3B, the offset frame 21 swings clockwise. When the rotation fulcrum O of the working unit 60 moves to the left from the state shown in FIG. 3B, the roller 53 shifts to the left with respect to the hook guide 47, and the roller 53 comes out of the concave guide surface portion 49a and linearly guides. The hook guide 47 pushes the roller 53 toward the rotation fulcrum O side of the working unit 60 and moves the hook 49 to the surface portion 49b to use the pivot 51c of the hook 51 as a fulcrum to resist the bias of the tension spring 54. The state where the lock pin 52 is engaged with the hook 51 is released, and the state shifts to the state shown in FIG. For this reason, the working unit 60 is in a state of being rotatable with respect to the offset mechanism unit 20.

  On the other hand, when the rotation of the working unit 60 is locked with respect to the offset mechanism unit 20, as the offset frame 21 swings counterclockwise by the extension of the hydraulic cylinder 13 from the state of FIG. The roller 53 moves from the linear guide surface portion 49b to the concave guide surface portion 49a, and the hook 53 rotates counterclockwise while the roller 53 pushes the hook 51 toward the mounting portion 5 by the urging force of the tension spring 54. The lock pin 52 enters the engaging projection 51a and enters the engaged state.

  Now, when the hydraulic cylinder 13 is reduced from the state of FIG. 4C and the offset mechanism 20 further swings to the left side, as shown in FIG. The joint 31 that is the pivot of the joint 30c and the second joint 30b moves along the inversion groove 41 toward the pivot fulcrum O of the working unit 60, and the second joint 30b connected to the joint 31 moves backward. The first node 30a connected to the second node 30b rotates clockwise about the rotation fulcrum O of the working unit 60, and the transmission support frame 65 including the first node 30a rotates clockwise about the rotation fulcrum O. Turn to. That is, the working unit 60 connected to the transmission support frame 65 and the transmission support case 61 rotates about the rotation fulcrum O in the clockwise direction.

  When the offset mechanism 20 swings further leftward from the state shown in FIG. 4D, as shown in FIG. 5 (description), the pivot fulcrum of the third joint 30c and the second joint 30b of the link mechanism 30. The joint 31 further moves along the inversion groove 41 toward the rotation fulcrum O side of the working unit 60 and reaches the guide end position Pe. As the joint 31 moves, the second node 30b connected to the joint 31 also moves to the rear side of the rotation fulcrum O of the working unit 60, and the first node 30a connected to the second node 30b is centered on the rotation fulcrum O. Rotating clockwise, the working unit 60 moves to the reverse working position Pr.

  When the offset mechanism 20 swings further to the left while the working unit 60 is moved to the reverse work position Pr, the joint 31 moves in the reverse offset groove 45. At this time, since the center of the joint 31 moves along an arc (reverse offset groove 45) having a radius of a certain distance r2 from the rotation fulcrum O of the working unit 60, the second node 30b connected to the joint 31 rotates. The fulcrum O does not approach or separate from the fulcrum O, and the first knot 30a does not rotate about the rotation fulcrum O. Therefore, the working unit 60 can be further offset to the left at the reversing work position Pr while maintaining its orientation.

  Now, as shown in FIG. 3B, in a state where the rotation of the working unit 60 is locked to the offset mechanism unit 20 by the lock device 50, the working unit 60 rotates relative to the rotation support arm 23. It is in a restrained state. For this reason, when the offset mechanism unit 20 swings to the right side with respect to the mounting unit 5, the working unit 60 is maintained in a constant orientation by the offset mechanism unit 20 constituting the parallel link. Is offset to the outermost position of the normal work position Pt shown in FIG.

  Note that the joint 31 connecting the second joint 30b and the third joint 30c extends along the normal offset groove 43 as described above in a state where the rotation of the working section 60 is locked to the offset mechanism section 20 by the locking device 50. It is arranged at a position where it can move. For this reason, when the offset mechanism section 20 swings clockwise while the joint 31 is in the state of FIG. 3B where the joint 31 is normally positioned at the entrance of the offset groove 43, the joint 31 moves along the normal offset groove 43. Move to the guidance start position Pa. Accordingly, the normal offset groove 43 that guides the movement of the joint 31 in the process in which the offset mechanism portion 20 swings toward the reversing work position can reliably move the joint 31 to the guide start position Pa, and A series of operations for reverse movement from offset movement can be performed continuously.

  Further, a reversing groove 41 is provided in the offset frame 21, and the joint 31 guided by the reversing groove 41 is rotated below the front end of the rotation support arm 23 and the offset frame 21 that rotates according to the swinging of the offset frame 21. By providing the link mechanism portion 30 that forms a four-bar link between the transmission support frame 65 connected to the linking portion 17 that is movably provided, the working portion 60 can be obtained only by swinging the offset mechanism portion 20. Therefore, it is not necessary to provide an actuator such as a cylinder for inverting the working portion 60 separately from the means for swinging the offset mechanism portion 20.

  Next, the operation of the coater 1 when the work unit 60 of the coater 1 configured as described above is moved from the normal work position Pt to the reverse work position Pr will be described. As shown in FIG. 9 (a) (plan view), the working unit 60 is moved from the state (FIG. 9 (a)) to the reverse working position Pr (FIG. In order to move to f)), first, the two electric hydraulic cylinders 11 of the telescopic mechanism 10 are reduced. When these electric hydraulic cylinders 11 are reduced, the working unit 60 is offset to the left by the offset mechanism unit 20 from the state shown in FIG. 9A to the state shown in FIG. 9B (plan view). Subsequently, when the electric hydraulic cylinder 11 continues to contract, the joint 31 of the link mechanism 30 enters the normal offset groove 43 of the guide member 40 and starts guiding the reversing groove 41 as shown in FIG. 10C (plan view). When moving to the position Pa, the offset movement of the working unit 60 stops and the locking of the working unit 60 with respect to the offset frame 21 by the locking device 50 is released. Thus, when the electric hydraulic cylinder 11 is reduced in a state where the working unit 60 is at the normal working position Pt, the working unit 60 is offset until the joint 31 moves to the guide start position Pa. By adjusting the extension amount of the motor and stopping the electric hydraulic cylinder 11, the offset position adjustment of the working unit 60 is continuously adjusted steplessly by the telescopic mechanism unit 10 between the normal working position Pt and the guidance start position Pa. be able to.

  When the two electric hydraulic cylinders 11 are reduced from the state shown in FIG. 10 (c) so that the offset mechanism 20 further swings to the left, FIG. 10 (d) (plan view) and FIG. 11 (e) ( As the joint 31 of the link mechanism portion 30 moves to the rotation fulcrum O side of the working portion 60 along the reverse groove 41 of the guide member 40, the working portion 60 is moved by the link mechanism portion 30 as shown in FIG. It rotates clockwise around the rotation fulcrum O. Then, as shown in FIG. 11 (f) (plan view), when the joint 31 moves to the guide end position Pe of the reversing groove 41, the working unit 60 enters a reversed state and moves to the reversing work position Pr.

  When the two electric hydraulic cylinders 11 are further reduced from the state shown in FIG. 11 (f) so that the offset mechanism 20 swings to the left, the working unit 60 moves further to the left while maintaining its orientation. That is, the offset is moved.

  As described above, the spreader 1 of the present invention allows the working unit 60 to be moved from the normal working position Pt only by reducing the electric hydraulic cylinder 11 of the telescopic mechanism unit 10 with the working unit 60 in the normal working position Pt. While being able to move to the reversal work position Pr, the offset position of the work part 60 can be continuously adjusted steplessly by the telescopic mechanism part 10 at each work position.

  In the above-described embodiment, the case where the length (section) of the normal offset groove 43 and the reverse offset groove 45 is shorter than that of the reverse groove 41 is shown, but it is shown in FIG. Thus, the lengths of these offset grooves 43 and 45 may be made longer. When the lengths of the normal offset groove 43 and the reverse offset groove 45 are increased as described above, the distance for guiding the joint 31 that moves through the normal offset groove 43 becomes longer, the movement of the link mechanism portion 30 is stabilized, and the offset mechanism portion. 20 rotations can be performed smoothly. Further, as shown in FIG. 12B (description), when the reverse offset groove 45 is lengthened, the range H in which the offset position at the reverse work position Pr of the working unit 60 can be continuously adjusted can be expanded. .

  Further, in the above-described embodiment, the wrinkle coater 1 provided with the locking device 50 capable of locking the working unit 60 to the offset frame 21 is shown. However, as shown in FIG. May be extended to the position of the joint 31 when the working unit 60 moves to the normal working position Pt, and the locking device 50 described above may be eliminated. In this case, the guide member 40 is constituted by a single plate-like member, and the normal offset groove 43, the reverse groove 41 and the reverse offset groove 45 are provided in communication with the plate-like member. Each tip of the reverse offset groove 45 is closed.

  If it does in this way, as shown in Drawing 14 (a) (explanatory drawing)-Drawing 14 (e) (explanatory drawing), work part 60 will be reversed work position Pr from normal work position Pt (refer to Drawing 14 (a)). As shown in FIGS. 14D and 14E, all the movements of the joint 31 of the link mechanism 30 are caused by the normal offset groove 43, the reverse groove 41, and the reverse offset groove 45 provided in the guide member 40. The work unit 60 can be moved from the normal work position Pt to the reverse work position Pr by guiding. For this reason, the locking device 50 described above is not necessary, and the number of parts of the coater 1 can be reduced and the cost can be reduced. Further, the movement of the link mechanism unit 30 is further stabilized, and the offset mechanism unit 20 can be rotated more smoothly.

  In the above-described embodiment, the description has been made by taking the glazing machine 1 as an example of the offset working machine. However, even in the case of the trench digging machine, the configuration of the glazing machine 1 can be configured similarly to the case of the glazing machine 1. The same effect as in the case, i.e., when the working part is moved from the normal working position to the reverse working position by the cylinder, the offset position of the working part can be continuously adjusted continuously by the cylinder at each working position. Can be obtained.

1 Spider coater (offset work machine)
5 Mounting part 10 Telescopic mechanism part 11 Electric hydraulic cylinder (hydraulic cylinder)
DESCRIPTION OF SYMBOLS 20 Offset mechanism part 21 Offset frame 23 Rotation support arm 25 Link member 30 Link mechanism part 31 Joint 40 Guide member 41 Reverse groove 43 Normal offset groove 45 Reverse offset groove 50 Locking device 60 Working part 90 Traveling machine body Pa Guide start position Pe guide End position Pt Normal work position Pr Reverse work position

Claims (2)

An offset working machine that has a working unit that is attached to a traveling machine body and receives power from the traveling machine body to work at an offset position that is offset laterally with respect to the traveling position of the traveling machine body,
An offset mechanism portion that is rotatably supported with respect to a mounting portion that is attached to the traveling machine body, the working portion that is rotatably supported on a distal end side of the offset mechanism portion, the working portion, and the offset A link mechanism portion provided between the distal end side of the mechanism portion, and a telescopic mechanism portion provided between the mounting portion and the offset mechanism portion,
The offset mechanism part has a guide member that guides the movement of the link mechanism part according to the rotation of the offset mechanism part,
Between the offset mechanism part and the working part, there is a lock mechanism part that locks the rotation of the working part,
With the rotation of the offset mechanism part due to the expansion / contraction of the extension / contraction mechanism part, the offset mechanism part, the link mechanism part, and the guide member cooperate with each other, so that the working unit moves the work when the traveling machine body moves forward. Moving from the normal work position where the work is performed to the reversal work position where the work part reversed when the traveling machine body moves backward, and the work part at each of the normal work position and the reverse work position There rows and stepless adjustment of the offset position of,
The offset working machine according to claim 1, wherein the lock mechanism unit locks the rotation of the working unit while the stepless adjustment of the offset position of the working unit is performed at the normal working position .   The offset working machine according to claim 1, wherein the extension mechanism is a single cylinder.

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