JP4074906B2 - Folding scraper - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has a rotation shaft fulcrum composed of a central work body and an extended work body extending the work width to the left and right, and can be folded by rotating the left and right work bodies around the rotation shaft fulcrum. The present invention relates to a folding scraping device.
[0002]
[Prior art]
Conventionally, as this type of folding scraping device, as described in Japanese Patent Laid-Open No. 10-295112, it is composed of a central work body and left and right extension work divided into three parts, and the extension work body is provided at both ends of the central work body. The structure is such that it is pivotally supported and folded upward, and the left and right extension work bodies can be folded and unfolded by the expansion and contraction of the hydraulic cylinder.
[0003]
[Problems to be solved by the invention]
In the configuration described in Japanese Patent Laid-Open No. 10-295112, the hydraulic cylinders are expensive because the hydraulic cylinders are used for the left and right for folding and unfolding the left and right working bodies, respectively. However, there is a problem that the weight of the airframe becomes heavy and the work is limited to a large tractor.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the folding shaving device which is composed of a central working body and three left and right extending working bodies and which is supported by both ends of the central working body and can be folded upward. The shaft support means is provided with a drive means by an electric motor that rotates forward and backward, so that the extension work body can be folded, and the center work body is provided with a center leveler for leveling mud so as to be swingable and the center leveler is electrically operated. It is equipped with one unlocking means that switches to the earthing work position by a motor,
At both ends of the center leveler, provided with connecting pieces projecting toward the extended work body side,
The extension working body has a side leveler for leveling mud, and a folding scraping device is provided in which an engaging piece that engages and holds the connecting piece is provided on a side portion of the side leveler on the central working body side.
In the folding scraping device, the folded extended working body is configured to be electrically controlled so that it can be rotated to the working position only when the center leveler of the central working body is fixed by the fixing release means.
[0005]
[Action]
As described above, the extension work body is pivotally supported at both ends of the central work body, the forward / reverse rotation motor is provided in the pivot support means section, and the center leveler is provided with one fixing release means by the electric motor. Therefore, the left and right side levelers engaged with the pivoting of the left and right working bodies and the connecting pieces of the center leveler by remote control of electric control can perform ground leveling work and earthing work integrally, and the entire body can be manufactured lightly. .
Further, since the folded extension work body can be electrically driven to the work position only when the center leveler of the center work body is fixed by the fixing release means, the connecting pieces at both ends of the center leveler are always constant with the engagement pieces of the side leveler. Because it is engaged at an angle of
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a folding shaving device embodying the present invention during a crushed work, and FIG. 2 is a top view of the same shaving device when folded. FIG. 3 is a side view of the same type of shaving apparatus, FIG. 4 is a rear view of the same type of shaving apparatus, and FIG. 5 is a rear view of the same type of shaving apparatus. FIG. 6 is a side sectional view of a similar shaving device. FIG. 7 is a side view of the main part of the leveler operating means of the same type of shaving apparatus, and FIG. 8 is a rear view of the main part of the folding drive means of the same type of shaving apparatus. FIG. 9 is a plan view showing the locking means during the unfolding operation, and FIG. 10 is a plan view showing the unlocking action during the unfolding operation. FIG. 11 is a plan view showing a locking action at the time of folding, FIG. 12 is an enlarged action view showing a leveler connection, and FIG. 13 is an enlarged view showing a leveler connection part.
[0007]
In FIG. 1, A indicates a folding scraping device, which is composed of a central work body 1 and extension work bodies 2L and 2R that extend the work width to the left and right. The extension work bodies 2L and 2R are expanded to extend the work body 2L. The lock plates 11L, 11R are engaged and locked with the lock pins 213L, 213R provided on the 2R, and the left and right extension work bodies 2L, 2R are rotated around the rotation shaft 2a in FIG. 61 is engaged and locked with the lock pins 212L and 212R provided on the extension work bodies 2L and 2R, so that the machine body width dimension at the time of work is made compact.
7 is a leveler connecting device.
[0008]
FIG. 3 is a side view, although not shown, a tractor mounting mast 12 connected to a tractor three-point link mechanism is provided, and the folding scraping device A is mounted on the rear portion of the tractor so as to be movable up and down. Further, power is transmitted from the tractor PTO shaft to the input shaft 131 of the transmission case 13 provided at the substantially central portion of the folding scraping device A through a universal joint or the like.
[0009]
As shown in FIGS. 4, 5, and 6, the central working body 1 includes a center frame 11 and a tractor mounting mast 12 that protrudes in front of the center frame 11 and is connected to a three-point link of the tractor (not shown). Provided.
A transmission case 13 having an input shaft 131 protruding forward and an output shaft 132 protruding downward on both sides is provided in front of the center portion of the center frame 11, and is fixed to the output shaft 132 and driven to rotate. A central crushed body 14 is supported and provided on side plates 15L and 15R extending downward from the center frame 11. The central crushed body 14 is constituted by crushed claws 142 provided in a plurality of rows on the circumference of the central rotor shaft 141, and a clutch 143 is provided at the outer end.
[0010]
Further, a center cover 15 covering the upper portion of the central debris body 14, a first center leveler 16 pivotally supported at both ends at the rear of the center cover 15, and vertically supported at both ends are pivotally supported at the rear of the first center leveler 16. A first leveler support arm 181 that has a second center leveler 17 that is pivotable up and down, and that constitutes a center leveler and whose pivotal end is pivotally supported by the center frame 11; and the second center leveler 17 A leveler support arm 18 is provided on the upper surface of the substantially central portion of the second leveler support arm 182. The leveler support arm 18 is pivotally supported by the end portion of the second leveler support arm 182 that is pivotally supported upward.
[0011]
By fixing the link configuration of the leveler support arm 18, the second center leveler 17 is fixed and held for scraping the soil, and by releasing the link configuration of the leveler support arm 18, the second center leveler 17 is leveled. Leveler operating means 3 is provided that enables switching to a flat work position for flattening.
[0012]
As shown in FIG. 7, the leveler support arm 18 has a lock plate 181 a having a notch provided on the first leveler support arm 181 and a lock pin 183 a as shown in FIG. By rotating the lock bracket 183 pivotally supported, the lock plate 181a and the lock pin 183a can be engaged and disengaged to release the link support of the leveler support arm 18.
[0013]
The leveler operating means 3 has an operating lever 31, and by rotating the operating lever 31, the lock bracket 183 that is interlocked is rotated so that the lock plate 181a and the lock pin 183a can be engaged and disengaged.
Further, the forward and reverse motor M1, which is the driving means, is connected to the lock bracket 183, and the forward and reverse rotation of the motor M1 can be remotely controlled by the control box B, so that the leveler can be leveled by remote control while riding on the tractor. It is possible to switch between the flat work position and the earthing work position.
[0014]
Extension work bodies 2L and 2R are provided in a plurality of rows on the circumference of extension rotor shafts 221L and 221R that are rotatably supported at both ends below side cover frames 21L and 21R in which the frame and the cover are integrated. First side levelers 23L, 23R which have extended ground breaking bodies 22L, 22R composed of the ground breaking claws 142, which are pivotally supported at both ends at the rear of the side cover frames 21L, 21R, and which are rotatable up and down. There are second side levelers 24L and 24R which are pivotally supported at both ends behind the first side levelers 23L and 23R and are rotatable up and down.
[0015]
The second side levelers 24L and 24R are connected to the side of the central work body so that the second side levelers 24L and 24R can be switched between a ground leveling position for leveling the soil in conjunction with the second center leveler 17 and a soil leveling work position for scraping the soil. A combination piece is provided, and a leveler coupling device 7 is provided at both ends of the second center leveler 17 to be engaged and held with a coupling piece protruding from the extended work body side.
25L and 25R are extended side levelers.
[0016]
The left and right ends of the center frame 11 provided on the central working body 1 and the inner ends of the side cover frames 21L and 21R provided on the extension working bodies 2L and 2R are pivotally supported by a rotating shaft 2a. By doing so, the extension work bodies 2L and 2R provided on the left and right are rotated and can be folded.
[0017]
Since the extension work bodies 2L and 2R are symmetrical and have the same configuration, the folding drive means 4 and the extension work body locking means 5, the folding rotation action and the unfolding action during work will be described for one extension work body 2L.
[0018]
In FIG. 8, the folding drive means 4 is configured such that an outer end portion of a center frame 11 provided in the central working body 1 and an inner end portion of a side cover frame 21L provided in the extension working body 2L are rotatable by a rotating shaft 2a. A rotating gear 42 that is pivotally supported and integrated with a rotating plate 41 is rotatably provided at the lower end of the rotating shaft 2a. A forward / reverse electric motor M2 provided with a motor gear 43 that is a driving means for rotationally driving the rotational gear 42 is disposed at a position where the electric motor M2 meshes with the rotational gear 42. Rotating the rotating plate 41 integrated with the drive transmission.
[0019]
As shown in FIG. 9, the extension work body locking means 5 includes a first release lot 51 that contacts the outer peripheral surface of the rotation plate 41, and a guide pipe 52 through which the first release lot 51 fits and regulates the sliding direction. A link plate 53 connected to the first release lot 51 and rotatable in the horizontal direction; a lock plate 11L having a hook shape that rotates horizontally so as to be engaged with and disengaged from a lock pin 213L provided in the extension work body 2L; A link body is constituted by a second release lot 54 that connects the lock plate 53 to the lock plate 11L.
The first release lot 51 is provided with a compression spring 51a for abutting the outer peripheral surface of the rotating plate 41 so as to always press it.
[0020]
FIG. 10 shows the unlocking operation from the locked state at the unfolded position at the time of operation. The rotating plate 41 starts to rotate when the electric motor M2 rotates. The drive operation of the electric motor M2 is remotely operated by the control box B. While the rotation plate rotates α °, the first release lot 51 that contacts the outer peripheral surface of the rotation plate 41 rotates the link plate 53 that slides and connects in the pushing direction, and the link plate 53 and the lock plate are rotated. The lock plate 11L is rotated to the release side via the second release lot 54 connecting the 11L, and the unlocking during the unfolding operation is completed.
[0021]
FIG. 11 shows a folding operation. The rotation plate 41 is rotated by α °, and after the unlocking at the time of the unfolding operation is completed, the rotation plate 41 is further rotated to open the rotation plate 41. The inner peripheral surface of the hole 41a engages with the sliding pin 211L provided toward the lower side of the side frame 21L, and the extension work body 2L starts folding and rotating.
[0022]
When the extension work body 2L is rotated to β °, the lock pin 212L provided on the side cover frame 21L gets over the hook plate 61 that is pulled and held by the tension spring 62, and the notch 61a provided on the hook plate 61 and the lock The pin 212L is engaged, and the lock in the folded state is completed.
[0023]
When unfolding from the folding lock state during work, the motor gear 43 provided in the electric motor M2 rotates in the reverse direction, and the rotation plate 41 integrated with the rotation gear 42 is transmitted to the rotation gear 42 and starts rotating. The downwardly projecting pin 61b provided on the hook plate 61 comes into contact with the outer peripheral surface of the rotating plate 41 to lift the hook plate 61 and release the lock when folded.
[0024]
After the lock at the time of folding is released, the inner peripheral surface of the long hole 41a opened in the rotation plate 41 and the sliding pin 211L protruding below the side cover frame 21L are engaged to expand the extension work body 2L. Rotate in the direction.
When the extension work body 2L rotates to the unfolded position, the lock pin 213L provided on the side cover frame 21L gets over the lock plate 11L provided on the central work body 1 and engages with the pin receiver 112L cut out in a U-shape. Locked by the lock plate 11L.
[0025]
When the extended work body in FIG. 2 is expanded from the folded state to the work position, an instruction is given from the tractor seat by the control box B to rotate the electric motor M2. At this time, the electric motor M1 that drives the lock bracket 183 of the leveler operating means 3 is used to the electric motor M2 that deploys the extension working bodies 2L and 2R to the working position only when the center leveler is always set to the earthing work position. The control circuit is electrically driven.
[0026]
When the setting of the center leveler by the leveler operating means 3 is not set to the earthing work position, the center leveler is again set and instructed to the earthing work position. Accordingly, the folded extension work bodies 2L and 2R can be electrically driven to expand to the work position only when the center leveler of the central work body 1 is fixed to the earthing work position by the leveler operation means 3, so that both end portions of the center leveler can be operated. The connecting piece is always fixedly held by engaging with the engaging piece of the side leveler at a constant angle.
When an instruction to expand the extension work bodies 2L and 2R to the work position is given as the control circuit of the control box B, the electric motor M1 of the leveler operating means 3 is rotated so that the center leveler is always set to the earthing work position. The gist of the construction is the same.
[0027]
Also, when the extended working bodies 2L and 2R are rotated from the expanded working state to the folded state shown in FIG. 2, the electric motor M2 is rotated by giving an instruction to the control box B from the tractor seat as in the above control. . At this time, the electric motor M2 that rotates the extension working bodies 2L and 2R to the folded state only when the center leveler is always set to the earthing work position by the electric motor M1 that drives the lock bracket 183 of the leveler operating means 3. When the setting of the center leveler is not set to the earthing work position, the center leveler is again set and instructed to the earthing work position. Accordingly, the extension work bodies 2L and 2R which are unfolded and connected to the center leveler of the central work body 1 can be electrically driven to be folded and rotated only when the center leveler is fixed at the earthing work position. The engagement between the connecting piece and the engaging piece of the side leveler is always released at a constant angle.
[0028]
The leveler connecting operation between the side leveler provided in the extension working bodies 2L and 2R rotated by the folding driving means 4 and the center leveler of the central working body 1 will be described with reference to FIGS. Since the leveler connecting device 7 provided at the inner end portions of the second side levelers 24L and 24R at both outer end portions is symmetrical and has the same configuration, only one extension work body 2L side will be described.
[0029]
The leveler connecting device 7 is provided with a leveling auxiliary plate 71 protruding from the end of the second center leveler 17 toward the extension work body 2L, and a connecting piece 72 provided on the leveling auxiliary plate 71, and the second side leveler 24L. An extended leveling auxiliary plate 73 projecting toward the central working body 1 so as to overlap with the leveling auxiliary plate 71 at the inner end, and an upper surface of the connecting piece 72 is sandwiched between the extended leveling auxiliary plate 73 A lock plate 74 that is fixedly held is pivotally supported so as to be rotatable in the vertical direction.
[0030]
The lock plate 74 is pivotally supported by a fulcrum pin 75 and is rotatable in the vertical direction. The lock plate 74 is always elastically held in the opening direction by a spring 76 to form an opening. Then, the extension work body 2L is unfolded and rotated during the extension work, and the extended leveling auxiliary plate 73 is formed by the lock plate 74 while overlapping with the upper surface of the leveling auxiliary plate 71 as shown in FIG. The opening is in contact with the tip of the connecting piece 72. When further rotating, as shown in FIG. 13, the leading end of the connecting piece 72 pushes the abutting portion 74a of the lock plate 74, the lock plate 74 rotates downward, and the clamping surface 74b is connected to the connecting surface 74b. The upper surface of the piece 72 is clamped and held, and the second center leveler 17 and the second side leveler 24L are connected. By being connected in this way, the second side levelers 24L and 24R can be displaced to a scraping leveling machine that leveles the soil in conjunction with the second side leveler 17 and a soiling work position that scrapes the soil. .
[0031]
【effect】
With the above configuration, the left and right work bodies can be folded at the same time and individually by remote control of electric control from the seat of the tractor, and at the same time, the earth leveling leveler can be released and fixed, and it is convenient. Further, the entire machine can be set to be lightweight, and it can be operated with a relatively small tractor, which is economical. Since the center leveler connecting piece at the time of folding and rotating is fixed at a fixed position, the engaging pieces of the side leveler are always reliably engaged and integrally move.
[Brief description of the drawings]
FIG. 1 is a plan view of a folding shaving device during crushed work. FIG. 2 is a top view of the same shaving device when folded. FIG. 3 is a side view of the same shaving device. ] Rear view with part cut out of a similar shaving device [FIG. 6] Side cross-sectional view of the same shaving device [FIG. 7] Side view of the main part of the leveler operating means of the similar shaving device [FIG. FIG. 9 is a plan view showing the locking means during the unfolding work. FIG. 10 is a plan view showing the unlocking action during the unfolding work. FIG. 11 is a plan view showing the locking action during the folding. ] Enlarged view showing leveler connection [Fig. 13] Enlarged view showing leveler connection [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Central work body 11 Center frame 11L, 11R Lock plate 112L Pin receiver 12 Tractor mounting mast 13 Transmission case 131 Input shaft 132 Output shaft 14 Central crushed body 141 Central rotor shaft 142 Crushed claw 143 Clutch 15 Center cover 15L, 15R Side plate 16 1st 1 center leveler 17 2nd center leveler 18 leveler support arm 181 first leveler support arm 181a lock plate 182 second leveler support arm 183 lock bracket 183a lock pin 2L, 2R extension work body 21L, 21R side cover frame 211L, 211R slide pin 212L , 212R Lock pins 213L, 213R Lock pins 22L, 22R Extended ground bodies 221L, 221R Extended rotor shafts 23L, 23R First side levelers 24L, 24R Id leveler 25L, 25R Extension side leveler 2a Rotating shaft 3 Leveler operating means 31 Operating lever 4 Folding driving means 41 Rotating plate 41a Elongate hole 42 Rotating gear 43 Motor gear 51 First release lot 52 Guide bracket 53 Link plate 54 Second release lot 61 hook plate 61a notch 61b pin 62 tension spring 7 leveler connecting device 71 leveling auxiliary plate 72 connecting piece 73 extended leveling auxiliary plate 74 lock plate 74a abutting surface 75b fulcrum pin 76 spring A folding allowance device B control box G Compression elastic body M1, M2 Electric motor

Claims (2)

In the folding shaving device, which is composed of a central work body and left and right extension work bodies, and which is supported on both ends of the central work body so that it can be folded upwards, A driving means by a reverse electric motor is provided so that the extended work body can be folded, and a center leveler for leveling mud is provided in the central work body so as to be swingable, and the center leveler is switched to the earthing work position by the electric motor. Comprising a number of unlocking means,
At both ends of the center leveler, provided with connecting pieces projecting toward the extended work body side,
A folding shaving device in which the extension work body has a side leveler for leveling mud, and an engagement piece for engaging and holding the connection piece is provided on the side of the side work of the central work body. 2. A folding shaving device according to claim 1, wherein the folded extension working body is electrically controlled so that it can be rotated to the working position only when the center leveler of the central working body is fixed by the fixing release means.

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