JP2007117030A - Foldable harrowing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable harrowing apparatus composed of three sections comprising a middle working member and right and left side-working members wherein the side working members are foldable upward at both ends of the middle working member while preventing the drop of the first side leveller in folding by using a simple and inexpensive mechanism. <P>SOLUTION: The foldable harrowing apparatus has right and left side-working members foldable upward from the middle working member, and has a mechanism to fix the first side leveller. The fixing mechanism for the first side leveller is provided with a stopper arm rotation axis attached to each side working member, a stopper arm placed on the stopper arm rotation shaft in a manner to apply a rotation force toward each side working member, an engaging protrusion for the first leveller attached to each first side leveller and enabling the engagement and disengagement to the stopper arm, and a protrusion to restrict the rotation of the stopper arm, attached to the middle working member and enabling the engagement and disengagement to the stopper arm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a crushed device for performing scraping or crushed soil to be used by attaching to a traveling vehicle such as a tractor, and has a central working body at the center and left and right side working bodies that are left and right extended parts, The present invention relates to a folding and crushing device capable of adjusting a working width by folding each side work body toward a central work body or folding both side work bodies during movement.

  Background Art Various types of folding and crushing devices have been conventionally known that have a structure in which a center portion and left and right extension portions are folded and the left and right extension portions are folded toward the center portion side. Japanese Unexamined Patent Publication No. 2003-111503 (Prior Art 1) relates to “agricultural working machine”, “equipped with working machine main body 2 having a tilling body 19 and a rotatable leveling body 20”, and “extending the working width of the tilling body 19 An extended working body 3 having an extended tilling body 26 and a rotatable extending leveling body 27 that extends the working width of the leveling body 20, ” “When the extension work body 3 is folded, the rotation of the extension leveling body 27 toward the leveling body 20 is restricted, and the work implement body 2 is interposed between the extension leveling body 27 and the leveling body 20. It has a configuration of “rotation restricting means 110 that holds the leveling member rotation permitting space portion 111 that enables work”.

Further, JP 2005-253362 A (Prior Art 2) states that “a leveling body that rotates up and down around a rotation center axis for folding between the unfolding work position and the folding non-working position; A support body for supporting a body, and a guide body having a substantially arcuate arc guide portion centered on the folding center axis for folding, and centering on the center axis for folding of the leveling body There is a description of “agricultural working machine” in which the support body rotates along the arc guide portion in a state in which the support body is in contact with the arc guide portion of the guide body. Further, in the [0034] column of the prior art 2, “As is clear from FIG. 3, when the leveling body 36 of the extension working unit 4 is rotated about the folding center axis X (the extension working unit 4 When the contact portion 50 of the support body 41 is in contact with the arc guide portion 22 of the guide body 21 in the middle of the rotation, the contact portion 50 and the arc are rotated. There is a description that the leveling body 36 is supported from below by the guide body 21 through the support body 41 by the contact with the guide portion 22, and the movement (falling) based on the weight of the leveling body 36 is regulated. .
JP 2003-111503 A JP 2005-253362 A

  In the prior art 1, “in the agricultural working machine 1 provided with the rotation restricting means 110a, the connecting rod 42 and the rotating arm 44 are located in the proximity positions on the rotating central axis 4 side of the working machine body 2, and the connecting rod 42 The lower end portion is attached to the mounting portion 41 formed in the fitting concave portion 49 so as to be rotatable via the horizontal shaft 43 ”, and the sliding portion is abundant in the engaging portion between the parts. There are problems that require countermeasures, problems that the operation is complicated because the structure is complicated and there are many components, and that maintenance inspection takes time, and that manufacturing costs increase.

  The “rotation regulation of the leveling body 36” of the prior art 2 is “the leveling body 36 is supported from below by the guide body 21 via the support body 41 by the contact between the contact portion 50 and the arc guide portion 22”. Thus, there is a problem that the structure is complicated and large, and the manufacturing cost increases.

In order to solve the above problem, in the folding soil breaker that consists of three parts of the central working body and the left and right side working bodies, the side working body can be folded upward from both ends of the central working body,
The central working body has a central earth breaking rotary, a central rotary upper surface cover, a central first leveling plate, and a central second leveling plate that is pivotally attached to the central first leveling plate. The body includes a side crush rotary, a side rotary top cover, a side rotation frame, a side first leveling plate, and a side second leveling plate that is rotatably attached to the side first leveling plate. While having a main plate,
When each side work body is in the unfolded state, each side first ground leveling plate can be turned up and down with respect to the side rotary upper surface cover, and when each side work body is in the folded state, Each side first leveling plate has a side first leveling plate fixing mechanism that is in a state in which the downward rotation with respect to the side rotary upper surface cover is restricted,
The side first ground leveling plate fixing mechanism includes a stopper arm rotation shaft provided on each side work body and a stopper arm provided so as to be urged to rotate toward the side work body by the stopper arm rotation shaft. A first leveling plate locking projection that is provided on each side first leveling plate and can be locked and unlocked with a stopper arm, and a stopper that is provided on the central work body and can be locked and unlocked with the stopper arm An arm rotation check projection,
When each side work body is in the unfolded state, a part of the stopper arm is locked to the stopper arm rotation check projection and the rotation is restricted, and the other part of the stopper arm is the first of the side first leveling plate. 1 ground leveling plate locking projection is unlocked, each side first leveling plate can be turned up and down with respect to the side rotary top cover,
When each side work body is folded, a part of the stopper arm is unlocked from the stopper arm rotation check projection, and the other part of the stopper arm is the first leveling board member of the side first leveling board. Proposed is a folding soil crusher characterized in that each side first ground leveling plate is in a state in which downward rotation with respect to the side rotary upper surface cover is restricted because it is locked with a stop projection.

  According to the present invention, the side first leveling plate fixing mechanism has a very simple configuration, there are few protrusions to the outside of the entire device, it can be incorporated in a small space, and the device can be handled easily. This has the effect that the maintenance cost can be reduced and the manufacturing cost can be reduced. Moreover, when working in a state in which any of the side work bodies is folded, it is possible to secure a vertical rotation space for the leveling plate of the central work body.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of a state in which a side working body of a folding ground breaking device according to an embodiment of the present invention is expanded to a working state, and FIG. 2 is a state in which a side working body of the folding ground breaking device is also unfolded to a working state. FIG. 3 is a rear view of the folded side of the folding ground breaking device, FIG. 4 is a drive transmission diagram of the folding ground breaking device, and FIG. 5 is a folded side side of the folding ground breaking machine. Side explanatory drawing which shows a state, FIG. 6 is principal part side explanatory drawing of a folding crushing apparatus similarly, and shows the operation | movement of the 1st leveling board of a side work body, and the action | operation of a side 1st leveling board fixing mechanism. FIGS. 7 to 9 are views of the folding and crushing apparatus as viewed in the direction of arrow A in FIG. 1 and are operation explanatory views for changing the left side working body from the expanded state to the folded state in the forward direction of the tractor.

  The folding soil breaker according to an embodiment of the present invention is composed of three parts: a central work body 1 and left and right side work bodies 2L and 2R that extend the work width to the left and right of the central work body 1. The central work body 1 and the left and right side work bodies 2L and 2R connect the side work bodies 2L and 2R to the upper side of the central work body 1 so as to be foldable left and right. 3 is a folding part of the central work body 1 and the left and right side work bodies 2L and 2R, and 4 is a side first leveling plate fixing mechanism.

  The central working body 1 has a central earth crushing rotary 10 and a pipe-shaped center frame 11 provided in the left-right direction. The center frame 11 is provided with an input case 12 in the center, an input shaft 12a is projected forward from the input case 12, and a lower mast pin 19b provided on both sides of the top mast 19a and the input case 12 is a tractor three-point link mechanism (see FIG. (Not shown), and a universal joint is connected to the input shaft 12a so as to transmit drive from the tractor PTO shaft. The input shaft 12a is connected to an output shaft 11a provided in the center frame 11 via a bevel gear 12b so as to be capable of transmission.

  A transmission chain case 13 is provided on one side of the center frame 11, and the rotation transmission is transmitted from the output shaft 11 a to the central rotation shaft 10 a of the central earthing rotary 10 through a sprocket 13 a and a roller chain 13 b provided in the transmission chain case 13. Connect as possible. 10b is the ground claw provided in large numbers over the circumference direction in the center rotating shaft 10a.

  As shown in FIG. 5, the central rotary shaft 10a is provided with central clutch claws 14 at both left and right ends, and side clutches at the ends of the side rotary shafts 20a and 20a of the left and right side work bodies 2L and 2R. It is the structure which can be rotationally transmitted by connecting with the nail | claw 20b.

  The central ground rotary 10 is provided with a central rotary upper surface cover 15 on the upper surface. The central rotary top cover 15 is provided with a central first leveling plate 16 at the rear end thereof so as to be vertically rotatable via a first leveling plate rotation shaft 16a. The central first leveling plate 16 is provided with a central second leveling plate 17 on the rear end side (or lower end side) so as to be vertically rotatable via a second leveling plate rotating shaft 17a. Reference numeral 160 denotes a first rake, and 161 denotes a second rake, both of which are provided on the central first leveling plate 16.

  The central second leveling plate 17 is connected to the leveling plate operating rod 18a, the leveling plate operating arm 18b, and the operating lever 18c, which are leveling plate operating means 18, on the upper surface thereof, and the operating lever 18c connected to the operating rod 18a. Thus, the central first leveling plate 16 and the central second leveling plate 17 are rotated and fixed.

  A mounting frame 19 is connected to the tractor by a top mast 19a and a lower pin 19b.

  The left and right side working bodies 2L, 2R are provided with a side crush rotary 20 having a side rotary shaft 20a provided in the left-right direction, and a side rotary top cover 21 on the upper surface thereof. The side rotary upper surface cover 21 is provided with a side first ground leveling plate 22 at the rear end thereof so as to be vertically rotatable via a first leveling plate rotating shaft 22a. The side first leveling plate 22 is provided with a side second leveling plate 23 on the rear end side (or the lower end side) so as to be vertically rotatable. A first rake 220 and a second rake 221 are provided on the side first leveling plate 22.

  The folding unit 3 is provided at the folding portion of the central working body 1 and the respective side working bodies 2L and 2R, and the side working body circuit provided on the side working bodies 2L and 2R by the folding drive mechanism. The side work bodies 2L and 2R are connected to the central work body 1 around a folding rotation shaft 30 that rotatably connects the moving frame 31 and the central work body rotation frame 32 provided on the central work body 1. Fold 180 degrees above. In this embodiment, the side work body rotation frame 31 is formed of two parallel plate-like bodies facing each other, and the central work body rotation frame 32 is formed of a square tube body having a U-shaped cross section with an open bottom surface. .

  The side first ground leveling plate fixing mechanism 4 includes a stopper arm rotating shaft 40 provided on each side working body rotating frame 31 of each side working body 2L, 2R, and an arm torsion spring on the stopper arm rotating shaft 40. A stopper arm 41 provided so as to be rotated and biased in the direction of each side work body by 44; a first leveling plate locking projection 42 provided by protruding on the upper surface of each side first leveling plate 22; It comprises a stopper arm rotation check projection 43 provided on the central work body rotation frame 32 of the central work body 1.

  The stopper arm 41 is made of a deformed L-shaped plate, and can be rotated around the stopper arm rotating shaft 40 by attaching an intermediate portion to the stopper arm rotating shaft 40. FIG. 6 to FIG. As shown, it is biased in the direction of arrow R by the arm torsion spring 44. The side-side end 41a of the stopper arm 41 is bent in an L-shape at a right angle to the rear, and when the side work bodies 2L and 2R start to be folded, the end surface of the stopper arm 41 abuts against the first leveling plate locking projection 42. Touch.

  The central side end 41b of the stopper arm 41 is a stopper arm provided on the central working body rotating frame 32 of the central working body 1 when the side working body 2L is in the unfolded state as shown in FIGS. The rotation check projection 43 is locked. Due to the locking, the stopper arm 41 is restrained from rotating in the direction of the arrow R in its locked state, and the side-side end 41a is unlocked from the first leveling plate locking protrusion 42. It is stopped without being engaged.

  7 and FIG. 6, when the side work bodies 2L and 2R are in the unfolded state as shown in the solid line diagram of the side first ground leveling plate 22, the stopper arm 41 has a central end on the stopper arm. Since it is locked to the dynamic check protrusion 43, the rotation in the direction of the arrow R is in a check state. In this state, the side first leveling plate 22 is in a state in which the stopper arm 41 and the first leveling plate locking projection 42 are unlocked, so that each side first leveling plate 22 is a side rotary. The upper cover 21 is rotatable in the vertical direction. Crushing work is performed in this state.

  Next, when each side work body 2L, 2R starts to rotate around the folding rotation shaft 30 from the state of FIG. 7 to the state of FIG. 8, the stopper arm rotates when the transition from the unfolded state to the folded state begins. The positions of the shaft 40, the stopper arm 41, and the first leveling plate locking projection 42 are moved, and the side end 41a of the stopper arm 41 comes into contact with the first leveling plate locking projection 42, and the stopper The locking position between the central side end 41b of the arm 41 and the stopper arm rotation check projection 43 also changes.

  When the side work bodies 2L and 2R are folded as they are into a folded state rotated 180 degrees as shown in FIG. 9, the center side end 41b of the stopper arm 41 is engaged with the stopper arm rotation check projection 43. Is completely disengaged, and the stopper arm 41 and the stopper arm rotation check projection 43 are in the unlocked state. In this state, in the stopper arm 41, the side end 41 a comes into contact with the first leveling plate locking projection 42 of the side first leveling plate 22 by the biasing force of the arm torsion spring 44 in the arrow R direction. Since it stops at the position, the first leveling plate locking projection 42 is securely locked. Thereby, each side part 1st leveling board 22 will be in the state by which rotation to the downward direction was restrained with respect to the side part rotary upper surface cover 21. FIG.

  Reference numeral 5 denotes a fixing release hook for fixing and releasing the rotation of the side work bodies 5L and 5R. The hook 5 can be rotated around the hook rotation shaft 50 and is fixed to the central work body 1. Can be engaged with and disengaged from the hook pin 51 provided. When the unlocking hook 5 is engaged with the hook pin 51, the side work bodies 2L and 2R are fixed in the unfolded state and cannot be moved in the folding direction. It becomes possible to shift from the unfolded state to the folded state. The unlocking hook 5 is always urged to rotate in the direction of the hook pin 51 by a hook torsion spring 52 provided on the hook rotating shaft 50, and unlocked by the lock releasing lever 53.

  Next, with respect to the operation of the side first ground leveling plate fixing mechanism 4 of the folding ground breaking device of the present invention, FIG. The operation will be described with reference to FIGS. 7 to 9 showing the operation of folding the left side working body 2L in the direction of arrow A in FIG. The operation of folding the right side work body 2R in the forward direction of the tractor from the unfolded state is the same as the operation of the left side work body 2L.

  6 and 7 show a state in which the left side working body 2L is unfolded. In the unfolded state, the fixing release hook 5 is engaged with the hook pin 51 by the biasing force of the hook torsion spring 52. Since the hook pin 51 is fixed to the central work body 1 and the hook is engaged with the hook pin 51, the side work body 2L is fixed in the unfolded state and cannot be moved in the folding direction. At this time, the stopper arm 41 of the side first leveling plate fixing mechanism 4 has its center side end 41b locked to the stopper arm rotation check projection 43, so that the rotation in the arrow R direction is suppressed. The side first leveling plate 22 is in a state in which the stopper arm 41 and the first leveling plate locking protrusion 42 are unlocked (solid line diagram of the side first leveling plate 22 in FIG. 6). For this reason, each side part 1st leveling board 22 is a state which can be rotated to an up-down direction with respect to the side part rotary upper surface cover 21. As shown in FIG. Crushing work is performed in this state.

  As shown in FIGS. 8 and 9, the lock release lever 53 releases the engagement of the fixing release hook 5 with the hook pin 51 and starts to shift the side work body 2 </ b> L (left side) from the expanded state to the folded state. Then, the side work body 2L starts to turn around the folding turning shaft 30 provided on the side turning frame 31, and the stopper arm turning shaft 40, the stopper arm 41, and the first leveling plate locking projection. The position 42 begins to move. This rotation does not change the relative position of the stopper arm rotation shaft 40 and the first leveling plate locking protrusion 42, but the stopper arm 41 is a stopper arm rotation restraining protrusion that does not rotate at its center end 41b. The position and posture change due to the locking with 43. When the position of FIG. 8 is reached by pivoting around the folding pivot shaft 30 of the side work body 2L, the side end 41a of the stopper arm 41 is in a position where it abuts against the first leveling plate locking projection 42. In addition to the change, the locking position between the center side end 41b of the stopper arm 41 and the stopper arm rotation check projection 43 also changes.

  When the left side work body 2L is folded as it is and is in a folded state rotated 180 degrees as shown in FIG. 9, the center side end 41b of the stopper arm 41 is engaged with the stopper arm rotation check projection 43. The side end 41a is securely moved by the pivoting of the arm torsion spring 44 in the direction of the arrow R, so that the first leveling plate 22 of the side first leveling plate 22 is reliably secured. It is locked with the main plate locking protrusion 42. By this locking, each side first ground leveling plate 22 is in a state where its downward rotation with respect to the side rotary upper surface cover 21 is restricted.

  On the contrary, when the side working bodies 2L and 2R are folded from the upper side of the central working body 1 to the unfolded state, the state of the side first ground leveling plate fixing mechanism 4 is changed to the state shown in FIGS. The stopper arm 41 has a central end 41b locked to the stopper arm rotation restraining protrusion 43, and rotates and stops in the opposite direction against the rotation biasing force of the arm torsion spring 44 in the arrow R direction. . In this state, when the state further shifts to the unfolded state of FIG. 6, the side end 41 a of the stopper arm 41 is released from the first leveling plate locking projection 42, and the side first leveling plate 22 is released. Is in a state of being rotatable in the vertical direction with respect to the side rotary upper surface cover 21.

  This invention has a foldable side work body that is an extended work body, and can be used as a folding soil breaker such as a ground scraping device or a ground breaking rotary device having a leveling plate that can perform ground scraping work and soil breaking work in a field. High nature.

The side view of the state which expand | deployed the side part working body of the folding crushing apparatus which is embodiment of this invention in the working state The rear view of the state which expanded the side part work body similarly to the working state. The back view of the state where the side work body is also folded Similarly, the drive transmission diagram of the folding crusher Side explanatory drawing which shows the state which folded the side part work body similarly Similarly it is principal part side surface explanatory drawing of a folding ground crushing apparatus, and the operation | movement of the 1st leveling board of a side part work body and the action | operation of a side 1st leveling board fixing mechanism are shown. Operational explanatory drawing which is an A arrow view in FIG. 1 of a folding ground breaking apparatus similarly, and shows the action | operation of a side part 1st leveling board fixing mechanism. Operational explanatory drawing which is an A arrow view in FIG. 1 of a folding ground breaking apparatus similarly, and shows the action | operation of a side part 1st leveling board fixing mechanism. Operational explanatory drawing which is an A arrow view in FIG. 1 of a folding ground breaking apparatus similarly, and shows the action | operation of a side part 1st leveling board fixing mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Central work body 10 Central crushed rotary 10a Central rotating shaft 10b Crushing claw 11 Center frame 11 Output shaft 12 Input case 12a Input shaft 12b Bevel gear 13 Transmission chain case 13a Sprocket 13b Roller chain 14 Central side clutch claw 15 Central rotary upper surface cover 16 Center First leveling plate 16a First leveling plate rotation axis
160 First Rake
161 Second rake 17 Central second leveling plate 17a Second leveling plate rotation shaft 18 Leveling plate operating means 18a Leveling plate operating rod 18b Leveling plate operating arm 18c Operating lever 19 Mounting frame 19a Top mast 19b Lower pin 2L, 2R Left and right sides Part work body 20 Side ground rotary 20a, 20a Side rotation shaft 20b Side clutch claw 21 Side rotary top cover 22 Side first ground leveling plate
220 First Rake
221 2nd rake 22a Side 1st leveling board rotation axis 23 Side 2nd leveling board 23a Side 2nd leveling board rotation axis 3 Folding part 30 Folding rotation axis 31 Side part working body rotation frame 32 Central working body rotating frame 4 First side leveling plate fixing mechanism 40 Stopper arm rotating shaft 41 Stopper arm 41a Side side end 41b Center side end 42 First leveling plate locking projection 43 Stopper arm rotation check projection 44 Arm torsion spring 5 Unlocking hook 50 Hook rotation shaft 51 Hook pin 52 Hook torsion spring 53 Lock release lever

Claims (1)

In the folding crushing device that consists of three parts of the central working body and the left and right side working bodies, the side working body can be folded upward from both ends of the central working body,
The central working body has a central earth breaking rotary, a central rotary upper surface cover, a central first leveling plate, and a central second leveling plate that is pivotally attached to the central first leveling plate. The body includes a side crush rotary, a side rotary top cover, a side rotation frame, a side first leveling plate, and a side second leveling plate that is rotatably attached to the side first leveling plate. While having a main plate,
When each side work body is in the unfolded state, each side first ground leveling plate can be turned up and down with respect to the side rotary upper surface cover, and when each side work body is in the folded state, Each side first leveling plate has a side first leveling plate fixing mechanism that is in a state in which the downward rotation with respect to the side rotary upper surface cover is restricted,
The side first ground leveling plate fixing mechanism includes a stopper arm rotation shaft provided on each side work body and a stopper arm provided so as to be urged to rotate toward the side work body by the stopper arm rotation shaft. A first leveling plate locking projection that is provided on each side first leveling plate and can be locked and unlocked with a stopper arm, and a stopper that is provided on the central work body and can be locked and unlocked with the stopper arm An arm rotation check projection,
When each side work body is in the unfolded state, a part of the stopper arm is locked to the stopper arm rotation check projection and the rotation is restricted, and the other part of the stopper arm is the first of the side first leveling plate. 1 ground leveling plate locking projection is unlocked, each side first leveling plate can be turned up and down with respect to the side rotary top cover,
When each side work body is folded, a part of the stopper arm is unlocked from the stopper arm rotation check projection, and the other part of the stopper arm is the first leveling board member of the side first leveling board. Since it is latched with a stop protrusion, each side part 1st leveling board will be in the state by which the downward rotation was controlled with respect to the side part rotary upper surface cover.

Images