JP2020025531A - Folding clod crusher - Google Patents

Abstract

To provide a folding clod crusher in which a leveling plate connected to a side work body can be made to avoid rotating or hanging down when the side work body is in a folded state due to deposition of a foreign object or the like.SOLUTION: The folding clod crusher has a side work body 2, and this side work body 2 includes: a folding part; a side clod crushing rotary 20; a side rotary upper surface cover 21; a side first leveling plate 22; and a side second leveling plate 23. On the side work body 2, there are a side first rocking link 61, an actuator 63, a side second rocking link 62 for connecting the other end of the actuator, a side first link 50 that is freely rotatably connected to the side work body and that is provided with a guide part 50c, and a side second link 51 that is freely rotatably connected to the side first link and that is also freely rotatably connected to a side second leveling plate. The guide part 50c contains a regulation range 50e for regulating rotation of the side first link 50 and a deregulation range 50d for enabling rotation of the side first link.SELECTED DRAWING: Figure 17

Description

  The present invention relates to a crushing device for performing scraping, crushing, and the like that is used by being mounted on a traveling vehicle such as a tractor. In detail, the central working body connected to the traveling vehicle at the center and the left and right side working bodies which are extended portions of the central working body left and right can perform work such as crushing soil, and each side working body is The present invention relates to a foldable soil crushing device that can fold toward a central working body and travel. More specifically, in these folding-type soil crushers, in the side working body that can be compact by folding the central working body, a leveling plate that is attached to the side working body and performs a leveling operation at the time of tilling work, The present invention relates to a mechanism for preventing rotation or drooping in a folded state rotated up and down.

  A soil crushing device mounted on a traveling vehicle such as a tractor for scraping or crushing soil, comprising a central working body, and side working bodies located on the left and right sides of the central working body. As a foldable soil crushing device, a folding type soil crushing device of Patent Document 1 is disclosed. This folding type soil crushing device is characterized in that, when the side working body is folded, the contact with the central working body is released, and the regulating locking portion provided on the second side link formed of a through hole through which the locking rod can be inserted and removed. When the side working body is deployed, the sliding rod comes into contact with the central working body contact portion and slides, and is locked together with the sliding rod. The rod slides out of the restriction locking hole to release the restriction of the side second link. "(From the solution of [Summary]).

JP 2013-236589 A

  The foldable soil crushing device described in Patent Document 1 has a case where a locking rod cannot be inserted into the restriction locking hole of the restriction locking part due to foreign matter such as mud entering the restriction locking hole. In this state, the side second link cannot be regulated. As a result, there is a problem that the leveling plate connected to the side working body often rotates or hangs down in the folded state.

  Therefore, the present invention has been made in view of the above-mentioned problems, and a folding type that can avoid a state in which the grounding plate connected to the side work body rotates or hangs down in the folded state due to the attachment of foreign matter or the like. It is intended to provide a crushing device.

  In order to achieve the above object, one embodiment of the present invention includes a central work body and a side work body located on a side of the central work body, and moves the side work body upward from both ends of the central work body. Each of the left and right side working bodies is foldable, and a folding part that is rotatably connected to the central working body and can fold the side working body upward, and a side soil breaking body that can be ground by rotating. A rotary, a side rotary top cover that is fixedly positioned on the upper side of the side ground rotary, and a first side ground plate that is positioned at the rear of the side ground rotary and that is rotatably provided in the vertical direction. A side second ground plate provided on the side first ground plate so as to be rotatable in the vertical direction, the side portion being mounted on the side work body and rotatable around the left-right direction as a fulcrum axis. One end is connected to the first swing link and the first side swing link to extend and contract in the longitudinal direction. A possible actuator, a side second swing link rotatably provided on a side work body connecting the other end of the actuator, and one end rotatably connected to the side work body, A side first link having an opening and a guide portion for continuously guiding the second swing link from the opening, and one end rotatably connected to the other end of the side first link; A second end link rotatably connected to the second side ground plate, the guide portion having a regulating range for regulating the rotation of the first side link; and a first side link. And a restriction release range that enables the rotation of the crushable soil crushing apparatus.

  ADVANTAGE OF THE INVENTION According to this invention, the folding-type earth-crushing apparatus which can avoid the state of rotation or drooping of the leveling plate connected with the side work body at the time of the folding state by adhesion of a foreign material etc. can be provided.

Rear view of a state in which a side work body of the folding type soil crushing apparatus according to the embodiment of the present invention is expanded to a working state. The rear view of the folding type soil crushing apparatus which is the embodiment of the present invention, in which the side working body is folded. Side view of a state where the side working body of the embodiment is expanded to a working state The side view of the state which expanded the side work body of embodiment into the folded state. It is a principal part side view showing the cross section of the central working body of embodiment, AA sectional drawing of FIG. It is a principal part side view showing the cross section of the side part working body of embodiment, BB sectional drawing explanatory drawing of FIG. Drive transmission diagram of embodiment Enlarged rear view explanatory view of the vicinity of a folding unit and a side ground plate link mechanism in a deployed state of the embodiment. Explanatory view in enlarged plan view of the vicinity of a folding part and a side ground plate link mechanism in a developed state of the embodiment. FIG. 3 is an explanatory view of the side first ground leveling plate fixing mechanism in the unfolded state of the embodiment, as viewed in the direction of arrow C in FIG. 3. FIG. 3 is an explanatory view as viewed from an arrow C in FIG. 3 in an intermediate state between the unfolded state and the folded state of the embodiment. FIG. 3 is an explanatory view of the side first ground leveling plate fixing mechanism in the folded state according to the embodiment, as viewed in the direction of arrow C in FIG. 3. Side view explanatory drawing which expanded and expanded the center leveling plate link mechanism of embodiment by the AA line of FIG. FIG. 1 is an explanatory side view in which the side ground plate link mechanism of the embodiment is sectioned along line DD in FIG. 1 and enlarged. FIG. 1 is an explanatory side view of a side leveling plate link mechanism according to an embodiment, taken along line BB in FIG. 1 and enlarged. FIG. 2 is an essential part side view showing a cross section of the central working body of the embodiment in a buried state. It is a principal part side view showing the cross section of the side working body of the embodiment in the mulled state, and is an explanatory view enlarged in cross section along line BB of FIG. FIG. 2 is a cross-sectional view taken along the line EE of FIG. 2, showing a main part side view of the embodiment in which the side working body is folded and the central working body shows a cross section in a soil-retracted state, excluding the plate member 62 a. FIG. 2 is an explanatory sectional view taken along line EE of FIG. 2, showing a main part side view of the embodiment in a folded state and a central working body showing a cross section in a crushing work state, excluding a plate member 62a.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts may be denoted by the same or similar reference numerals. However, the drawings are schematic, and the relationship with the dimensions of each part may be different from the actual one. In the description, as shown in FIG. 1, the left side is the left side in the traveling direction, the right side is the right side in the traveling direction, the left side in FIG. 3 is the front in the traveling direction, and the right side is the rear in the traveling direction.
In addition, various changes can be made to the technical idea of the present invention within the technical scope defined by the claims described in the claims.

As shown in FIG. 1, the foldable soil crushing apparatus includes a central working body 1 and left and right side working bodies 2L and 2R extending the working width to the left and right of the central working body 1. The left and right side working bodies 2L, 2R are rotatably connected at the ends of the central working body 1, and are turned upward to be folded above the central working body 1.
The folded part of the central working body 1 and the side working bodies 2L, 2R located on the left and right thereof is a folded part 3, and a side first ground plate fixing mechanism 4 is arranged around the folded part 3. Have been.

  As shown in FIG. 7, the central working body 1 has a central crushing rotary 10 and a pipe-shaped center frame 11 provided in the left-right direction. The central crushing rotary 10 is provided with a central rotating shaft 10a, and further provided with a plurality of crushing claws 10b in a radial direction from the central rotating shaft 10a. The center frame 11 is provided with an input case 12 having an input shaft 12a disposed forward in the center. The input shaft 12a can receive power from a tractor or the like located in front of the central working body 1. Further, a mounting frame 19 is provided around the input case 12. The mounting frame 19 is provided with a top mast 19 a above the input case 12 and lower pins 19 b provided on both sides of the input case 12. The top mast 19a and the lower pin 19b are connected to a three-point link mechanism (not shown) of the tractor and provided so as to be able to move up and down. A universal joint (not shown) is connected to the input shaft 12a so as to transmit drive from the tractor PTO shaft. You. The input shaft 12a is connected to an output shaft 11a provided in the center frame 11 via a bevel gear 12b inside the input case 12 so as to transmit the received power.

  As shown in FIG. 7, a transmission chain case 13 is provided on one side of the center frame 11. In the transmission chain case 13, a sprocket 13a provided at an end of the output shaft 11a, a sprocket 13b provided at an end of the central rotary shaft 10a, a sprocket 13a, and a roller chain 13c for bridging and transmitting power to the sprocket 13b are provided. Thus, the power received from the input shaft 12a can be transmitted as rotational power to the central rotary shaft 10a of the central soil crushing rotary 10 via the sprocket 13a, the roller chain 13c, and the sprocket 13b. Then, the central working body 1 crushes the soil by a large number of crushing claws 10b provided on the central rotating shaft 10a in the circumferential width direction.

  As shown in FIGS. 4 and 7, a center side clutch claw 14 is provided at each of the left and right ends of the center rotation shaft 10a. The center side clutch pawl 14 is connected to a side clutch pawl 20b provided at an end of the side rotating shaft 20a of the left side working body 2L when the left side working body 2L is in an expanded state, for example, on the left side. It is possible, and the power of the central rotation shaft 10a is transmitted to the left-side working body 2L. Similarly, the center side clutch claw 14 provided at the right end of the center rotating shaft 10a is transmitted to the right side working body 2R. FIG. 4 shows the state in which the side work body 2 is folded upward, so that the center side clutch pawl 14 is shown. However, as shown in FIG. The details of the side working body 2, the side rotating shaft 20a, and the side clutch claws 20b will be described later.

  As shown in FIGS. 4 and 5, a central rotary top cover 15 is provided above the central crushing rotary 10. On the rear end side of the central rotary top cover 15, there is provided a central first ground plate 16 which is rotatable up and down around a first ground plate rotating shaft 16 a also arranged at the rear end side of the central rotary top cover 15. Is provided. At the rear end side (or lower end side) of the central first leveling plate 16, a central second leveling plate 17 that is rotatable up and down via a second leveling plate rotating shaft 17a is attached. A rake 16 c is provided on the side of the central side rotary 10 from the central first leveling plate 16. In this embodiment, one row of the rakes 16c is provided at equal intervals in the left-right direction. The center second ground plate 17 has one end of the center second link 18b rotatably connected to the upper surface thereof, and the other end of the center second link 18b connected to one end of the center first link 18a. Further, the other end of the central first link 18a is connected to the main body 1 of the central working body. The central first leveling plate 16, the central second leveling plate 17, the central second link 18b, and the central first link 18a constitute a central leveling plate link mechanism 180.

  In the vicinity of the central portion in the front-rear direction of the central first link 18a, a protruding portion protruding downward in a triangular shape is provided. At the front side in the traveling direction of the protruding portion, a cutout portion opened downward is formed upward and rearward. The notch functions as a central guide 181 and, in cooperation with a central link restricting means 180 described later, regulates and releases the rotation of the central ground plate. The center guide portion 181 is an L-shaped notch groove bent in a crank shape, and a groove formed upward from below the center first link 18a is formed so as to be bent rearward on the way. . The central guide portion 181 is provided with a restriction release range 18c that makes the central first link 18a rotatable and a restriction range 18d that makes the central first link 18a non-rotatable.

The restricting range 18d is provided at the rear deep portion of the L-shaped notch groove shown in FIG. 13, and when a center link restricting means 182 described later is located in this range, the end located at the lower part of the notch groove. The edge 18e is in a state where the rotation of the central first link 18a is prevented, and the rotation is restricted. When the rotation of the central first link 18a is restricted, the rotation of the central first ground plate 16 and the central second ground plate 17 is restricted, and the rotation operation cannot be performed.
The restriction release range 18c is provided near the opening of the L-shaped notch groove shown in FIG. 13, and even if a central link restriction means 182 described later is located in this range, the rotation of the central first link 18a is performed. Since the edge 18e for restricting the movement is not at the position for restricting the rotation, the rotation of the central first link 18a is not restricted. When the rotation of the center first link 18a is released, vertical movement is enabled. In order to restrict and release the rotation of the center first link 18a, a center link restricting means 182 is located near the center first link 18a.

  As shown in FIGS. 1, 5 and 13, the central link restricting means 182 arranges vertically long plate members so as to sandwich the center first link 18 a between the plate surfaces, and bridges the respective plate members. It is fixed by connecting with a bar. The bar located at the lower end in the longitudinal direction of the plate is rotatably connected to the body of the central working body 1, and the other upper side is rotatably provided so as to be located at the central guide 181. The rotation of the central first link 18a can be restricted and released by positioning the upper side of the other end in the restriction release range 18c or the restriction range 18d of the central guide portion 181.

  Further, an actuator 183 is provided so that the center link restricting means 182 can be driven. The actuator 183 is a member that can expand and contract in the longitudinal direction, and can rotate the center first link 18a by the expansion and contraction operation. The actuator 183 has one end rotatably connected to the central rotary top cover and the other end connected to a bar on the upper end side of the central link restricting means 182. In this embodiment to be described, a hydraulic cylinder is used, and pipes (not shown) are provided by receiving hydraulic pressure from a traveling body (not shown) traveling in front of the foldable soil crushing device of the present invention. This enables the telescopic operation.

When the actuator 183 is extended, the central link restricting means 182 is pushed rearward, and the central link restricting means 182 is rotated rearward. The center link restricting means 182 that has turned to the rear side moves the center guide portion 181 to cause the center first link 18a to be in the turn restricting state. In this state, the central first leveling plate 16 and the central second leveling plate 17 are in a fixed state and cannot rotate.
Conversely, by shortening the actuator 183, the rod 62d is rotated forward by the center link restricting means 182. Since the upper bar of the center link restricting means 182 that has turned to the front side has moved to the opening of the center guide 181, the center first link 18 a is in a rotatable state. In this state, the central first leveling plate 16 and the central second leveling plate 17 are in a rotatable state, and a leveling operation for leveling the mud crushed by the central crushing rotary 10 is possible.

  Now, as shown in FIG. 7, the left and right side working bodies 2L, 2R are provided on the left and right of the central working body 1, respectively, and the side rotating shafts 20a corresponding to the central rotary shaft 10a of the central working body 1. Is rotatably provided, and a side crushing rotary 20 corresponding to the central crushing rotary 10 of the central working body 1 is provided on the side rotation shaft 20a. The side crushing rotary 20 is provided with a plurality of crushing claws 10b in the radial direction on the side rotation shaft 20a, and is capable of crushing the soil by rotating. Above the side crushing rotary 20, a side rotary top cover 21 corresponding to the central rotary front cover 15 of the central working body 1 is provided. A side clutch pawl 20b is provided at an end of the side rotating shaft 20a on the central working body 1 side, and is engaged with the central side clutch pawl 14, so that the side ground breaking rotary 20 is positioned at the center of the central working body 1. Rotational driving is possible by obtaining power from the rotating shaft 10a. Therefore, the left and right side working bodies 2L, 2R exhibit a soil breaking function as working bodies extending the central working body 1.

  3 and 6, on the rear end side of the side rotary upper surface cover 21, a first side leveling plate 22 is provided so as to be vertically rotatable via a first leveling plate rotation shaft 22a. . On the rear end side (or lower end side) of the first side ground plate 22, a second side ground plate 23 that is vertically rotatably connected is located. A rake 22b is provided on the side of the first ground leveling plate 22 on the side of the side ground breaking rotary 20 as in the case of the center first leveling plate 16. In this embodiment, only one row of rakes 22b is provided at equal intervals in the left-right direction. The side second ground plate 23 is connected to the side working bodies 2L and 2R main body via the side second link 51 and the side first link 50 on the upper surface, and the side first ground plate 22, The side second ground plate link mechanism 5 is configured by the side second ground plate 23, the second side link 51, and the first side link 50. One end of the side second link 51 is rotatably provided in the front-rear direction on the upper surface of the second side ground plate 23, and the other end of the second side link 51 has one end of the first side link 50. Are rotatably mounted. The side first ground plate 22 and the second side ground plate 23 are rotated by the side ground plate link mechanism 5 in conjunction with each other, and can be appropriately positioned at the time of tilling work. Details of the side ground plate link mechanism 5 will be described later.

As shown in FIGS. 1, 8 and 9, a folding part 3 is located at a folding part of the central working body 1 and the side working bodies 2 </ b> L and 2 </ b> R. The folding section 3 is connected to a side work body rotation frame 31 provided on the side work bodies 2L and 2R and a central work body rotation frame 32 provided on the center work body 1 so as to be rotatable. A rotation shaft 30 is provided. Each of the side working bodies 2L, 2R is folded 180 degrees above the central working body 1 about the folding rotation shaft 30.
When the central working body 1 and the side working bodies 2L, 2R are rotated, the central working body 1 and the side working bodies 2L, 2R are rotated by the central working body rotating frame 32 and the side working body rotating frames 31. It is made of a rigid body without distortion. In this embodiment, the side work body rotation frame 31 is formed of two opposed plate-like bodies facing each other, and the center work body rotation frame 32 is formed of a square cylinder having a U-shaped cross section with an open lower surface. .

As shown in FIGS. 10 to 12, a side first ground leveling plate fixing mechanism 4 is provided near the folding unit 3. As shown in FIGS. 1 and 8, the side first ground plate fixing mechanism 4 includes a stopper arm rotating shaft 40 on each side working body rotation frame 31 of each of the side working bodies 2L and 2R. Is provided. Further, a stopper arm 41 is provided on the stopper arm rotating shaft 40 so as to be urged by an arm torsion spring 44 toward each side working body. The stopper arm 41 is formed of a deformed L-shaped plate-like body, an intermediate portion of which is rotatably attached to the stopper arm rotation shaft 40, and an end on the side of the side working body 2 is formed in an L-shape to be perpendicular to the rear. To form a side end 41a, and the other end forms a center end 41b.
An arm torsion spring 44 is provided so that both ends are supported by the stopper arm 41 and the stopper arm rotation shaft 40. The arm torsion spring 44 urges the stopper arm 41 rotatable about the stopper arm rotation shaft 40 in the direction of arrow R shown in FIGS.
The first side leveling plate fixing mechanism 4 has a first leveling plate locking projection 42 protruding from the upper surface of each side first leveling plate 22, and is attached to the central working body rotating frame 32 of the central working body 1. A stopper arm rotation restraining projection 43 is provided.

When the side working bodies 2L, 2R start to shift from the unfolded state to the folded state, the first leveling plate locking projection 42 is in a state in which the center end 41b of the stopper arm 41 is in contact with the rotational restraint projection 43. The first leveling plate locking projection 42 approaches the continuation side end 41a. The stopper arm 41 is rotated by the urging force of the arm torsion spring 44.
As the rotational movement of the side working body 2 progresses, the position of the side end 41a of the stopper arm 41 is also moved with the rotation, and then the side end bent rightward and backward in an L-shape. The portion 41a and the contact locking surface 42a are at opposing positions. Then, the upward rotation of the side first ground plate 22 is restricted in FIGS. 3 and 6. In this state, even if the transition of the side working bodies 2L, 2R to the folded state is further advanced and rotated, the upward rotation of the side first ground plate 22 is restricted.

As shown in FIGS. 10 to 12, the center side end 41b of the stopper arm 41 is moved from the deployed state of the side working body 2L to the folded state (or from the transition to the deployed state to the deployed state). ) Abuts and is locked by a stopper arm rotation restraining projection 43 provided on the central working body rotation frame 32 by the urging force of the arm torsion spring 44.
Accordingly, the stopper arm 41 is locked in the unfolded state, and the rotation in the direction of arrow R is restrained, and the side end 41a is unlocked with the first leveling plate locking projection 42, It is stopped without any regard.

  When the side working bodies 2L and 2R are deployed as described above, as shown in FIG. 10, the stopper arm 41 has the central side end 41b locked by the stopper arm rotation restraining projection 43, and therefore the arrow The rotation in the R direction is a state where the restraint is performed. In this state, the side first ground plate 22 is in a state in which the locking between the stopper arm 41 and the first ground plate locking protrusion 42 is released, so that each side first ground plate 22 is a side rotary member. The upper cover 21 is vertically rotatable. The crushing work is performed in this state.

Next, as shown in FIG. 11 and FIG. 12, when each of the side working bodies 2L and 2R starts to rotate around the folding rotation shaft 30 and shifts from the unfolded state to the folded state, the stopper arm rotates. The positions of the shaft 40, the stopper arm 41, and the first leveling plate locking projection 42 move, so that 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 center end 41b of the arm 41 and the stopper arm rotation restraining projection 43 changes.
From the state shown in FIG. 11 to the state shown in FIG. 12 where the side working bodies 2L and 2R are folded, the side end 41a of the stopper arm 41 is rotated by the first leveling plate locking projection 42. The arm is rotated by the biasing force of the torsion spring 44 until the arm comes into contact with the side first ground plate 22. When it abuts, the center side end portion 41b starts to separate from the stopper arm rotation restraining projection 43.

When the side working bodies 2L, 2R are in the folded state rotated by 180 degrees as shown in FIG. 12, the center end 41b of the stopper arm 41 is released from the engagement with the stopper arm rotation restraining projection 43. It is in a state.
In this state, the side end 41a of the stopper arm 41 is brought into contact with the first leveling plate locking projection 42 of the side first leveling plate 22 by the urging of the arm torsion spring 44 in the direction of arrow R. Since it stops at the position, it is securely locked to the first leveling plate locking projection 42. Thereby, each side first ground plate 22 is in a state in which the downward rotation of the side rotary top cover 21 is restrained.

Details of the side ground plate link mechanism 5 will be described. As shown in FIGS. 3 and 6, the side ground plate link mechanism 5 includes a side first ground plate 22, a side second ground plate 23, a side second link 51, and a side first link 50. It is configured. The side first ground plate 22 and the first side link 50 connected to the side work body 2 main body by the side ground plate link mechanism 5 are rotatably connected around their respective front sides as the center of rotation. ing.
The first side link 50 is disposed so as to be sandwiched between the mounting plates 52a and 52b, which are provided with the front side end portion 50a standing upright on the side working body 2 side by side in the left-right direction. It is rotatably connected. A second side link 51 is located at a rear end 50b of the first side link 50, and is rotatably connected to an upper end 51a of the second side link 51 via a rotation pin 510. Have been. The lower end 51b of the side second link 51 is rotatably connected to the upper surface of the second side ground plate 23. Then, at the time of tilling work, the first side ground plate 22 and the second side ground plate 23 can move up and down in conjunction with each other via the first side link 50 and the second side link 51. The angle of the side second ground plate 23 is controlled so as to be as horizontal as possible with respect to the tilling work surface.

  In the vicinity of the center in the front-rear direction of the first side link 50, a protruding portion that protrudes downward in a triangular shape is provided. At the front side in the traveling direction of the protruding portion, a cutout portion opened downward is formed upward and rearward. The notch functions as a guide portion 50c, and regulates and cancels the rotation of the leveling plate by linking with a side link regulating means 6 described later. The guide portion 50c is in the shape of a U-shaped groove bent in a crank shape, and the U-shaped groove formed from below the first side link 50 is formed in an L-shape so as to be bent rearward on the way. The guide portion 50c has a restriction release range 50d for allowing rotation and a restriction range 50e for preventing rotation of the first side link 50 depending on the location of the side link restriction means 6, which will be described later. Is provided. When the rotation of the first side link 50 is restricted, the first side ground plate 22 and the second side ground plate 23 are in a fixed state and cannot move up and down. When the rotation of the first side link 50 is released, vertical movement is possible. The side link restricting means 6 is located near the first side link 50 in order to restrict and release the rotation of the first side link 50. In addition, since the guide portion 50c has a shape in which one end is opened downward, even if foreign matter enters, the guide portion 50c can easily fall, and does not hinder the operation of the side link restricting means 6 described later.

As shown in FIGS. 1, 3, 8, and 9, the side link regulating means 6 is located on the side of the first side link 50, and the first side swing link 61, A second swing link 62, an actuator 63, and an elastic body 64 are provided.
The first side swing link 61 is erected on the side of the mounting plate 52b on the main body of the side working body 2 connecting the front end portion 50a and the side of the mounting plate 52b opposite to the mounting plate 52a. The mounting plate 52c is disposed so as to sandwich the mounting plate 52c, and is connected rotatably in the front-rear direction. The first side swing link 61 is fixed to two rods 61c, 61d provided in parallel in the left-right direction so as to bridge between the front and rear ends of two plate members 61a, 61b long in the front-rear direction. Have been. The bar member 61c disposed on the rear side of the plate members 61a and 61b is inserted into the center first portion of the mounting plate 52b and the side first swing link fulcrum hole 52d provided on the front side of the mounting plate 52c. The first side swing link 61 functions as a pivot shaft in the front-rear direction. The bar member 61d disposed on the front side of the plate members 61a, 61b abuts against the concave receiving portion 52e provided on the front upper end portion of the mounting plates 52b, 52c, thereby forming the first side swing link. The downward rotation of 61 is prevented.

  The second side swing link 62 is disposed rearward of the first side swing link 61, and is connected to be rotatable in the front-rear direction. The side second swing link 62 includes a mounting plate 52b, and vertically long plate members 62a and 62b arranged so as to sandwich the mounting plate 52a, and the side second swing link 62 is provided at the lower end side of the plate members 62a and 62b. A bar member 62c serving as a rotation fulcrum shaft and a bar member 62d are fixed to upper ends of the plate members 62a and 62b in parallel in the left-right direction so as to bridge the respective plate members 62a and 62b.

  The rods 62c and 62d of the side second swing link 62 are disposed so as to be located below the side first link 50, and the rod 62d is positioned at a guide portion 50c provided on the side first link 50. By doing so, the rotation of the first side link 50 can be restricted and the restriction can be released. More specifically, when the bar 62d is located in the restriction release range 50d set near the opening of the guide portion 50c, the lower portion of the opening is released, so that the guide portion is provided by the bar 62d. The first side link 50 can be turned upward without being locked to 50c. On the contrary, when the bar 62d is located in the regulation range 50e set at the back of the guide portion 50c, the locking portion 50f formed below the regulation range 50e is locked by the bar 62d, and The rotation of the first link 50 is restricted.

At the lower part near the boundary between the restriction release range 50d and the restriction range 50e of the notch edge of the guide part 50c shown in FIGS. 14 to 19, a protrusion shaped like a mountain is raised inside the notch part of the guide part 50c. 53 are provided. The distance between the apex 53a of the protrusion 53 and the upper edge 50g of the L-shaped crank groove provided in the guide portion 50c has a clearance through which the rod 62d can pass. Since the side first link 50 in the deployed state hangs downward due to its own weight, the side second swing link 62 is not caught by the projection 53 and is located between the restriction release range 50d and the restriction range 50e. Movement is possible.
When the side second swing link 62 is moved from the regulation range 50e to the regulation release range 50d, the first side swing link 62 interferes with the bar member 62d of the second side swing link 62. When the link 50 is lifted, the rotation of the second side swing link 62 is prevented. The function and effect of the projection 53 are exhibited when the side working body 2 described below is in a folded state.

  An actuator 63 is provided to connect the bar 61d of the first side swing link 61 and the bar 62d of the second side swing link 62, and is rotatable. The actuator 63 is a member that can expand and contract in the longitudinal direction, and can rotate the first side swing link 61 and the second side swing link 62 by an expansion and contraction operation. In this embodiment to be described, a hydraulic cylinder is used, and hydraulic pressure is distributed and piped (not shown) from a traveling body (not shown) that travels in front of the folding type soil crushing device of the present invention. This enables the telescopic operation. The rod member 62d connected to the actuator 63 is provided to be longer than the length of the connection portion with the actuator 63, and no member or the like is provided on the side adjacent to the actuator 63. The first side link 50 is located at a portion where this member or the like is not provided, and the rotation of the first side link 50 is restricted or released by the contact between the bar 62d and the guide portion 50c.

The actuator 63 extends the bar member 61d rearward by extending the bar member 61d as a fulcrum shaft, and rotates the second side swing link 62 rearward. The second side swing link 62 rotated rearward moves the side first link 50 by rotating the side portion first link 50 by moving the bar 62d through the guide portion 50c to position the bar 62d in the regulation range 50e. The state is restricted. In this state, the first side ground plate 22 and the second side ground plate 23 are fixed and cannot rotate.
Conversely, by shortening the actuator 63 using the bar 61d as a fulcrum shaft, the bar 62d is pulled back forward, and the second side swing link 62 is rotated forward. The side second swing link 62 that has turned to the front side has the bar 62d positioned in the restriction release range 50d by the movement of the bar 62d in the guide portion 50c. Make it rotatable. In this state, the first side grading plate 22 and the second side grading plate 23 are in a rotatable state, and a leveling operation for leveling mud crushed by the side crushing rotary 20 is possible.

  An elastic body 64 is provided on a plate member 61 a located on the side first link 50 side of the first side swing link 61. In this embodiment, the elastic body 64 uses a tension spring. However, the form of the elastic body is not limited as long as it can be urged in the contracting direction. One end of the elastic body 64 is hooked on a hook member 61e provided on the plate member 61a, and the other end is hooked on a hook member 52f provided on the mounting plate 52b on the side rotary upper cover 21. The imaginary line 64a formed by hooking the elastic body 64 on the hook members 52f and 61e in the working state of the side grounding plates 22 and 23 shown in FIGS. 14 to 17 is a rotation fulcrum of the first swing link 61. It is located below the rod 61c which is the axis. As a result, the first swing link 61 is always urged downward, so that the first swing link 61 does not rotate unexpectedly. The elastic body 64 allows the first side swing link 61 to stably maintain the determined position, so that the side grounding plates 22 and 23 can be rotated stably and the ground leveling work can be stably performed. I do.

  Next, the operation of the side ground level plate link mechanism 5 and the side link regulating means 6 of the folding type earth-crushing apparatus of the present invention will be described. The steps from the unfolded state to the folded state in the right side working body 2R in the tractor advancing direction are the same as the steps in the left side working body 2L, although left and right are different, and unless otherwise specified in the description. The left side working body 2L is taken as an example.

FIG. 10 shows a state in which the left side working body 2L is expanded. In the unfolded state, the stopper arm 41 of the first side leveling plate fixing mechanism 4 is locked at the center end 41b by the stopper arm rotation restraining projection 43, so that the rotation in the arrow R direction is restrained. The side first ground plate 22 is in a state where the stopper arm 41 and the first ground plate locking protrusion 42 are unlocked. For this reason, each side first ground plate 22 is vertically rotatable with respect to the side rotary top cover 21.
Further, the central first regulating plate 16 and the central second regulating plate 17, the first side regulating plate 22 and the second lateral regulating plate 23 are arranged such that the central link restricting means 182 releases the rotation restriction releasing range of the central first link 18a. , And the side second swing link 62 is located in the rotation restriction release range 50 d of the side first link 50, it is in a rotatable state. Soil crushing work is performed in this state, and the mud is leveled by moving up and down so that each leveling plate follows the paper surface.

  The center first leveling plate 16 and the center second leveling plate 17, the side first leveling plate 22 and the side second leveling plate 23 are set in a rotation-restricted state, and each leveling plate is set in a fixed state. Becomes possible. The soil putting work is a work of forcibly bringing mud at portions of the fixed soil leveling plates facing the central soil shaving rotary 10 side and the side soil shading rotary 20 side. The transition from the crushing operation in the unfolded state to the crushing operation is performed by extending the actuator 183 on the central working body 1 and the actuator 63 on the side working body 2. In this embodiment, the central and side actuators 183 and 63 are controlled in oil pressure by a control valve 184 and simultaneously extend and contract. This is because the individual actuators 183 and 63 are collectively operated by one operation unit (not shown), rather than operating the individual actuators 183 and 63 individually. Is possible.

The transition operation from the crushed soil work state in the unfolded state to the soil collecting work state will be described.
The central link restricting means 182 of the central working body 1 moves the central guide 181 due to the extension of the actuator 183, and starts to reach the restriction range 18d shown in FIG. Then, the central link regulating means 182 moves the central guide portion 181 so that the central second leveling plate 17 is gradually rotated downward. When the central link restricting means 182 completely reaches the restricting range 18d of the central guide portion 181, the downward rotation of the central second leveling plate 17 stops. Then, the state shown in FIG. 16 is obtained, and the rotation of the center first leveling plate 16 and the center second leveling plate 17 is restricted via the center second link 18b. In addition, the central second leveling plate 17 in the mulling state in the side view is set at a position where the central first leveling plate 16 is extended downward.

  Similarly, the side working body 2 moves the guide portion 50c by the extension of the actuator 63 by the side second swing link 62, and starts to reach the restriction range 50e from the restriction release range 50d. At this time, the foreign matter falls downward by the downward opening of the guide portion 50c, and the inside of the guide portion 50c is kept clean. Then, the second side swing link 62 moves in the guide portion 50c, and the second side ground plate 23 gradually rotates downward. When the second side swing link 62 completely reaches the regulation range 50e of the guide portion 50c, the downward rotation of the second side ground plate 23 stops. Then, the state shown in FIG. 17 is obtained, and the rotation of the first side ground plate 22 and the second side ground plate 23 is restricted via the second side link 51. In addition, the side second ground plate 23 in the soil collecting work state in side view is set at a position where the side first ground plate 22 is extended downward.

  The operation of shifting from the crushing work state to the crushing work state in the unfolded state is performed by performing a procedure reverse to the operation of shifting from the crushing work state to the crushing work state.

The transition operation from the unfolded state to the folded state will be described.
When the side work body 2 is rotated to be folded above the central work body 1, the operation is performed after each leveling plate is shifted to the mulling work state.

As shown in FIGS. 10 and 11, when the side first working body fixing mechanism 4 starts to shift the side working body 2L (left side) from the unfolded state to the folded state, the side working body 2L is turned sideways. The rotation starts around the folding rotation shaft 30 provided on the operating body rotation frame 31, and the positions of the stopper arm rotation shaft 40, the stopper arm 41, and the first leveling plate locking projection 42 start to move.
This rotation does not change the relative position between the stopper arm rotation shaft 40 and the first leveling plate locking projection 42, but the stopper arm 41 does not rotate at the center end 41b. The position and the posture change due to the locking with 43.
When the side working body 2L is turned around the folding turning shaft 30 as shown in FIG. 12, the side end 41a of the stopper arm 41 comes into contact with the first leveling plate locking projection 42. At the same time, the locking position between the center end 41b of the stopper arm 41 and the stopper arm rotation restraining projection 43 also changes.

The positional relationship between the side working body 2 and the central working body 1 at this time will be described with reference to FIGS.
When the side working body 2 is to be folded from the unfolded state shown in FIG. 10 to the upper part of the central working body 1 shown in FIG. 12, as shown in FIG. The central working body 1 and the side working body 2 are gradually separated from each other because they are rotated about the center.
When the side working body 2 is folded as it is and is turned by 180 degrees as shown in FIG. 12, the center side end 41 b of the stopper arm 41 moves to the stopper. The engagement with the arm rotation restraining projection 43 is completely disengaged and comes to a position, and the side end 41a is reliably secured to the side by the rotation of the arm torsion spring 44 urged in the direction of arrow R. The first leveling plate 22 is locked with the first leveling plate locking projection 42. By this locking, each side first ground plate 22 is brought into a state in which the downward rotation with respect to the side rotary upper surface cover 21 is restricted.

Furthermore, the side first ground plate 22 and the second side ground plate 23 remain in a state in which the rotation of the first side link is restricted (earth closing work state), so that the side work body 2 is folded. During the transition and after the folding operation is completed, the relative posture and position with respect to the side rotary upper surface cover 21 are maintained. Since the side working body 2 is configured as described above, the side first ground plate 22 and the side second ground plate 23 in the folded state do not rotate unexpectedly or hang down. This is because the side first ground plate 22 and the second side ground plate 23 of the foldable soil crusher that is being moved by the traveling body do not move, so that the vehicle can travel with improved safety.
Further, the side first ground plate 22 and the side second ground plate 23 during the folding operation are moved relative to the side rotary top cover 21 by the side first ground plate fixing mechanism 4 and the side ground plate link mechanism 5. It does not move because it keeps its position and posture relatively. That is, since only the portion related to the folding operation moves, the folding operation can be performed more safely.

Next, the case where the side work body 2 is in the folded state and the soil crushing work and the soil collecting work are performed only by the central work body 1 will be described. By setting the folding-type soil crushing device of the present invention in a folded state, it is possible to perform the soil crushing operation and the soil crushing operation only with the central work body 1 even in a place where the left-right width in the traveling direction is narrow.
Immediately after the transition from the unfolded state to the folded state, the central second leveling plate 17 and the side second leveling plate 23 are in the mulling state. That is, the rotation of the center first ground plate 16 and the center second ground plate 17 and the rotation of the side first ground plate 22 and the side second ground plate 23 are regulated. In this state, since the central working body 1 cannot perform the crushing work, it is necessary to release the regulation of the rotation of the central first leveling plate 16 and the central second leveling plate 17.

  The release of the regulation of the rotation of the central first leveling plate 16 and the central second leveling plate 17 is performed by operating the operation unit (not shown) and contracting the actuator 183 through the control valve 184 as described above, thereby setting the soil closing work state. From the state to the crushing work state. At this time, the actuator 63 of the side working body 2 also contracts at the same time. In this state, the second side ground plate 23 becomes rotatable. The protrusion 53 is used to prevent this.

  FIG. 18 shows the side link mechanism 5 and the side link restricting means 6 immediately after the transition to the folded state is completed. In this state, the bar member 62d of the second side swing link is located within the regulation range 50e of the guide portion 50c, and the central working body 1 and the side working body 2 are in the burying state. In the folded state, the vertical direction of the side working body 2 is opposite to that in the state of the crushing work, so the first side ground plate 22, the second side ground plate 23, and the second side link 51 are provided. Due to its own weight, a load is applied to the rear side end 50b of the first side link 50 in a direction away from the first side ground plate 22, that is, a direction of rotating forward in FIG. At this time, since the second swing link 51 is in the regulation range 50e and the load is applied by the actuator 63 in the direction in which the second swing link 51 stretches, the regulation of the rotation of the second side ground plate 23 is maintained. Further, the rod material 62d is hooked on the protrusion 53.

  In this state, when the central working body 1 is brought into the crushing work state, the shortening of the actuator 183 and the shortening of the actuator 63 simultaneously start. Then, the rod 62d connected to the actuator 63 tries to maintain the posture of the second side swing link 62 because the rod 62d is hooked on the projection 53. Then, as shown in FIG. 19, in order to continue the shortening of the actuator 63, the first side swing link 61 is rotated about the rod 61c, which is the rotation fulcrum axis, in the illustrated rotation direction S, that is, , In a direction away from the side rotary top cover 21. The first side swing link 61 comes into contact with the front end 50a of the first side link 50 and stops rotating, and maintains its posture.

The rotation torque of the first side swing link 61 generated by the compression of the actuator 63 is greater than the urging force of the elastic body 64 pressing the first side swing link 61 against the side rotary top cover 21. Rotation is possible.
When the compression of the actuator 63 is completed, the rotation of the first side swing link 61 also stops. At this time, the imaginary line 64a formed by the hook members 52f and 62e of the elastic body 64 is in a state in which the virtual line 64a has passed over the rotation fulcrum axis of the bar 61c. For this reason, the biasing force of the elastic body 64 acts in a direction in which the first side swing link 61 is separated from the side rotary upper surface cover 21. The action of this urging force presses the actuator 63 against the rear end 50b of the first side link 50, so that the second side swing link 62 is further kept in the regulation range 50e. As a result, even when the central working body 1 is changed from the soil collecting state to the crushing work state in the folded state, the side first grounding plate 22 and the side second grounding plate 23 of the side working body 2 maintain the respective rotation restrictions. it can. In the folded state, the direction in which the elastic body is biased by the first side swing link is different between the soil putting state and the crushing work state.

A case in which the central working body 1 is changed from the crushing work state to the burying work state in the folded state will be described. When the actuator 183 is extended in the extending direction, the central grounding plate link mechanism 180 enters the restriction range 18d from the restriction release range 18c of the central first link 18a, and the rotation of the central first link 18a is restricted.
At the same time, the actuator 63 of the side working body 2 also extends. At this time, the actuator 63 shown in FIG. 19 presses the rear side end 50b side of the first side link 50 via the second side swing link 62. Then, since the actuator 63 extends while maintaining the posture of the first side link 50, the first side swing link 61 is rotated in the direction opposite to the illustrated rotation direction S. The rotation of the first side swing link 61 is stopped by the rod member 61d coming into contact with the receiving portion 52e of the mounting plate 52c. At this time, since the actuator 63 is extended while maintaining the position of the side second swing link 62 in the restriction range 50e of the side first link 50, the rotation of the side first link 50 is performed. It remains regulated. In other words, the side first ground plate 22 and the side second ground plate 23 are still restricted from rotating.

  The elastic body 64 is attached with the side first swing link 61 because the virtual line 64a is over the bar 61c, which is the rotation fulcrum axis of the side first swing link 61, in a side view. The direction of urging acts in a direction to bring the first side swing link 61 closer to the side rotary top cover 21. This prevents unexpected rotation of the first side swing link 61 and stably restricts rotation of the first side ground plate 22 and the second side ground plate 23.

  When the side work body 2 is to be unfolded from the state in which it is folded above the central work body 1, the work is performed after the burying work state. When the actuators 183 and 63 are extended, that is, brought to the soil approaching state, the side ground plate link mechanism 5 and the side link restricting means change from the state shown in FIG. 19 to the state shown in FIG. When the state is changed to the state shown in FIG. 18, the state can be shifted to the developed state. When the side working body 2 is unfolded from the folded state, the stopper arm 41 of the first side leveling plate fixing mechanism 4 locks the center side end 41b to the stopper arm rotation restraining projection 43 during the transition to the unfolding. Then, the arm torsion spring 44 rotates in the opposite direction against the urging force in the direction of arrow R to stop. In this state, when the state further shifts to the unfolded state as shown in FIG. 10, the side end 41a of the stopper arm 41 is released from the engagement with the first grounding plate engaging projection 42, and the first side adjustment is performed. The main plate 22 is rotatable vertically with respect to the side rotary upper cover 21.

As described above, when the side working body 2 is in the folded state, the individual actuators may be operated collectively. Regardless of the posture state of the ground leveling plate of the central work body 1 in the soil burying operation or the crushing work, the regulation of the rotation of the side first ground plate 22 and the side second ground plate 23 of the side work body 2 can be maintained.
Further, when the side working body 2 is in the unfolded state, the posture of the soil leveling work or the crushing work of the leveling plate of the side working body 2 can be selected simultaneously with the central working body 1.

  INDUSTRIAL APPLICABILITY The present invention has a foldable side work body that is an extension work body, and is used as a foldable soil breaking device such as a scraping device or a crushing rotary device having a leveling plate capable of performing a scraping work and a crushing work in a field. It is possible.

DESCRIPTION OF SYMBOLS 1 Central work body 2 Side work body 2L Left work body 2R Right work body 5 Side ground plate link mechanism 50 Side first link 50d Regulation release range 50e Regulation range 51 Side second link 53 Projection 6 side Part link restricting means 61 Side first swing link 62 Side second swing link 63 Actuator 64 Elastic body

Claims (3)

A central working body and a side working body located on the side of the central working body, wherein the side working body can be folded upward from both ends of the central working body, and the left and right side working bodies A folding part that is rotatably connected to the central working body and is capable of folding the side working body, a side crushing rotary that can be crushed by rotating, and a crushing rotary located above the side crushing rotary. A side rotary top cover fixed to the side, a side first ground plate provided at the rear portion of the side soil breaking rotary and rotatably provided in a vertical direction, and a vertical ground plate on the side first ground plate. A second side ground plate provided rotatably on the
A first side swing link installed on the side work body and rotatable around a left-right direction as a fulcrum axis;
An actuator having one end connected to the first side swing link and capable of performing an expansion and contraction operation in a longitudinal direction;
A second side swing link rotatably provided on the side work body connecting the other end of the actuator,
A side first link having one end rotatably connected to the side working body, an opening at a lower portion, and a guide portion for continuously guiding the second swing link from the opening; ,
A side second link having one end rotatably connected to the other end of the side first link and the other end rotatably connected to the side second ground plate,
A regulating range that regulates rotation of the first side link;
A restriction release range enabling rotation of the first side link,
A foldable soil crushing device comprising: A projection for preventing the second swing link from moving to the restriction release range,
The foldable soil crushing device according to claim 1, further comprising: The side first swing link further includes an elastic body capable of biasing the first side swing link in a rotation direction.
The biasing direction is different between the state in which the rotation of the side first link is restricted and the state in which the rotation of the side first link is released.
The foldable soil crushing device according to claim 1 or 2, wherein:

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