JP5950753B2 - Leveling machine - Google Patents

Description

  The present invention relates to a leveling machine for leveling a field surface, and in particular, the leveling tool can adjust an inclination angle with respect to the field surface and is folded when being moved and transported outside the field. It relates to possible leveling machines.

  2. Description of the Related Art Conventionally, a leveling work machine having a leveling plate and mounted on the rear portion of a tractor for leveling a farm field is known.

  For example, the frame attached to the tractor is equipped with a leveling plate, a pressure-reducing wheel, and a laser beam receiving unit, and the leveling plate is controlled up and down with respect to a reference plane defined by the laser beam to level the field surface. The flat work is known (see Patent Documents 1 and 2).

  By the way, in recent years, there has been a tendency to liberalize imports and exports, and in order to counter the price of imported crops, it is necessary to organize agricultural entities into agricultural corporations, etc., and to conduct efficient agricultural management by large-scale farms. Is required.

  On the other hand, in recent years, farmers tend to be aging, but as one of the solutions, for example, agricultural corporations rent private farmland and consolidate it on a wider field area, making it more efficient. Needs for agricultural management.

  In this way, agriculture has been consolidated and scaled up, and the area of the field tends to be larger. In response, there is a demand for larger agricultural machines.

JP 2001-186802 A JP 2004-242681 A

  In the background as described above, there is a demand to increase the size of agricultural machinery, but the same applies to leveling machines. In order to increase the size of the leveling machine, it is necessary to increase the width of the leveling plate and the pressure wheel.

  However, when the horizontal width of the flat plate becomes larger, with conventional flat work machines, the traction force increases as the amount of soil carried by the flat plate increases, and the speed decreases to reduce the traction force applied to the tractor. However, it is necessary to repeat the work of raising the flat plate with respect to the field and releasing the soil from the flat plate. And since the soil pile when it opens to the agricultural field will be made, it will come to drive again in order to level the mountain, and work efficiency will fall.

  In view of this, the present invention aims to reduce the decrease in work efficiency by allowing the leveling tool to be adjusted with respect to the field surface so that the angle of inclination can be adjusted and tilted to reduce the traction force, so that the open soil is piled up. It is an object to realize a leveling work machine having a mechanism that does not become a problem.

  In addition, when the horizontal width of the flat plate becomes larger, the conventional flat work machine occupies a large road width when moving on a road for transportation outside the field, and even if it is transported by a truck, There arises a problem that it protrudes greatly from the loading platform.

  The present invention is also aimed at solving the transportation problems associated with the increase in the size of the leveling machine as described above, and the leveling work tool, the pressure wheel work tool, etc. can be folded stably and compactly. An object of the present invention is to realize a leveling work machine having a folding mechanism with a simple configuration.

  In order to solve the above-described problems, the present invention includes a tow rod connected to the tractor, and includes a main frame connected to the tow rod, a rear frame having wheels at the rear end, a left frame, and a right frame. In a leveling machine equipped with leveling tools on the front side of the frame and the right frame, the leveling tools are pivotally attached to the front side of the main frame, the left frame and the right frame, respectively. There is provided a leveling work machine characterized in that it is configured to be capable of adjusting an inclination angle with respect to a field surface by rotating by a hydraulic cylinder provided between a frame, a left frame and a right frame.

  The towing rod is rotatably attached to the main frame, and is rotated with respect to the main frame by the operation of a hydraulic cylinder provided between the main frame and the main frame, the rear frame, and the left side. It is preferable that the frame and the right frame can be adjusted in the vertical direction with respect to the traction rod.

  The rear frame is pivotally attached to the rear end of the main frame, and can be rotated with respect to the main frame by the operation of a hydraulic cylinder provided between the main frame and the rear frame. The frames are rotatably attached to the left and right sides of the rear frame, respectively, and can be rotated with respect to the rear frame by operation of a hydraulic cylinder provided between the left and right frames and the rear frame. During leveling work in the field, the main frame, rear frame, left frame and right frame are held in a substantially parallel posture with respect to the surface of the field, and when transported, the rear frame, left frame and right frame The frame is held in an upright posture substantially perpendicular to the main frame, and the left and right frames are It is desirable to perpendicular frame is configured to be held in position facing the front-rear direction.

  A tine work implement is attached to the main frame behind the leveling work implement, a pressure reducing wheel is attached to the rear frame, and a tine work implement is attached to the left and right frames respectively behind the flat work implement. It is preferable that the pressure wheel is attached.

The present invention produces the following effects.
(1) It increases the work efficiency of the field leveling work on the leveling machine, reduces the load on the towed tractor, and helps to reduce fuel.

(2) The work surface for the field is made to be movable up and down with a simple configuration with respect to the surface of the field, such as a leveling work tool, a pressure-reducing wheel, and a tine work tool, with respect to the towing bar connected to the tractor. Can be adjusted.

  Flat work tools, pressure-reducing wheels, tine work tools, etc. can be folded in a stable and compact manner with a simple structure. Easy to carry.

It is a figure explaining the whole structure of the Example of the leveling work machine which concerns on this invention, and is a perspective view which shows the state at the time of the operation | work in a farm field. It is a perspective view which shows the main frame of the said Example. It is a perspective view which shows the rear frame of the said Example. It is a perspective view which shows the state with which the tow rod, the main frame, and the rear frame of the said Example were assembled. It is a perspective view which shows the state by which the tow rod of the said Example, the main frame, the rear frame, the tine support frame material, the rotating shaft support frame material, and the center leveling work tool were assembled. It is a perspective view which shows the right side frame and the pressure wheel of the said Example, and the left side frame and the pressure wheel are also symmetrical and the same structure. It is a figure explaining the whole structure of the said Example, and is a perspective view explaining the middle operation | movement for folding for conveyance. It is a figure explaining the whole structure of the said Example, and is a perspective view which shows the state folded for conveyance. It is a perspective view which shows the center leveling work tool of the said Example, The leveling work tool on the left side and the leveling work tool on the right side are substantially the same as a center leveling work tool except the point which has a side plate. .

  EMBODIMENT OF THE INVENTION The form for implementing the leveling machine based on this invention is demonstrated below with reference to drawings based on an Example. In this specification, it is assumed that the front-rear direction is the front and the rear in which the leveling work machine travels, and the left-right direction or the horizontal width direction is a direction orthogonal to the traveling direction of the leveling work machine.

  An embodiment of a leveling machine according to the present invention will be described with reference to FIGS. FIG. 1 shows the overall configuration of a leveling work machine 1 according to the embodiment, and shows a state of leveling work in a field.

  The leveling work machine 1 includes a traction rod 2 connected to a tractor (not shown), and includes a main frame 3, a rear frame 4, a left frame 5 and a right frame 6 as frames.

Moreover, the leveling work machine 1 includes a leveling work tool, a tine work tool, and a pressure reducing wheel as work tools. Further, the leveling work machine 1 includes left and right wheels 11, a column 13 having a laser beam receiver 12, and a plurality of hydraulic cylinders.

  As shown in FIGS. 1, 2, and 5, the main frame 3 includes a pair of left and right outer frame members 17, a pair of left and right inner frame members 18, and a combined frame member that joins the outer frame member 17 and the inner frame member 18. 19, a coupling frame plate 20 is provided, and a tine support frame member 21 and a rotary shaft support frame member 22 are fixedly attached.

  In the left and right outer frame members 17, a mounting bracket 27 for fixing the tine support frame member 21 is fixed to the front end. The tine support frame member 21 is fixed and attached to the fixing portion 28 of the mounting bracket 27 so as to extend in the horizontal width direction (see FIG. 5).

  Further, at the lower front end of the mounting bracket 27, a pivot attachment portion 29 (specifically, a hole for inserting the pivot shaft 30) is formed for the leveling work tool for rotatably mounting the leveling work tool. . The left and right outer frame members 17 are formed with pivot portions 31 (specifically, holes for inserting pivot shafts 32) for pivoting the rear frame to which the rear frame 4 is pivotably attached.

  A rear end of a first hydraulic cylinder 35 (a central leveling work tool rotating hydraulic cylinder) for rotating a central leveling work tool 93, which will be described later, is pivoted at the center in the longitudinal direction of the outer frame member 17. A mounting piece 36 for a hydraulic cylinder to be worn is fixed.

  At the front ends of the left and right inner frame members 18, a pivot attachment bracket 37 for attaching the tow rod 2 for rotatably attaching the tow rod 2 to the main frame 3 is fixed. A mounting piece 44 for a hydraulic cylinder is fixed to the front upper surface of the left and right inner frame members 18.

  The attachment piece 44 for the hydraulic cylinder includes a pivoting portion 41 pivotally attached to the rear end of the second hydraulic cylinder 40 (towing rod pivoting hydraulic cylinder) and a third hydraulic cylinder 42 (rear frame pivoting hydraulic cylinder). ), And pivot portions 43 for pivotally coupling the front ends thereof.

  As shown in FIG. 4, an attachment piece 48 for a hydraulic cylinder that pivotally attaches the front end of the second hydraulic cylinder 40 is fixed to the upper surface of the traction rod 2. The rear end and the front end of the second hydraulic cylinder 40 are rotatably attached to the attachment pieces 44 of the left and right inner frame members 18 and the attachment pieces 48 of the traction rod 2, respectively. Thus, by operating the second hydraulic cylinder 40, the leveling work machine 1 as a whole is rotated in the vertical direction with respect to the traction rod 2 around the pivoting portion 38 for attaching the traction rod. Is possible.

  Since the base end side of the second hydraulic cylinder 40 is attached to the main frame 3 side, and the tip of the telescopic rod is attached to the traction rod 2 side, the base end side of the second hydraulic cylinder 40 is If it sees, it will become the structure which rotates the tow rod 2. FIG. Accordingly, when the second hydraulic cylinder 40 is operated and the rod is expanded and contracted, the traction rod 2 to which the tip of the expanding and contracting rod is attached rotates around the pivotally attached portion 38 with respect to the main frame 3.

  However, in actual work, the traction rod 2 is connected to the tractor through a pin at the front end thereof. Therefore, even if the second hydraulic cylinder 40 is operated and the rod is extended and retracted to rotate the traction rod 2, the traction rod 2 connected to the tractor is restrained by the tractor and does not move. The frame 3 rotates in the vertical direction relative to the traction rod 2. As a result, the main frame 3, the rear frame 4, the left frame 5 and the right frame 6 can be adjusted in the vertical direction with respect to the towing rod 2.

  As shown in FIG. 4, the rear end of the third hydraulic cylinder 42 is pivoted to a third hydraulic cylinder mounting piece 63 provided at the center of the front frame member 56 of the rear frame 4 described later. It is worn. Thus, by operating the third hydraulic cylinder 42, the rear frame 4, the left frame 5, and the right frame 6 are integrally rotated upward with respect to the main frame 3, as shown in FIG. can do.

  As shown in FIGS. 1, 5, and 7, the rotating shaft support frame member 22 is fixed to the lower surfaces of the left and right outer frame members 17 and the left and right inner frame members 18 with bolts so as to extend in the horizontal width direction. ing. Receiving portions 52 are provided at the left and right ends of the rotating shaft support frame member 22.

  As shown in FIG. 1, the receiving portion 52 receives a rotating shaft 79, which will be described later, during the leveling operation in the field, and the rear frame 4, the left frame 5, and the right frame 6 are entirely brought into the field surface. It is held in a substantially parallel posture.

  As shown in FIGS. 3 to 5, the rear frame 4 includes a front frame member 56 that extends in the lateral width direction, a rear frame member 57, and a left and right member that connects the front frame member 56 and the rear frame member 57 that extend in the front-rear direction. The front-rear coupling frame member 58 is provided.

  At both left and right ends of the front frame member 56, hydraulic cylinder mounting pieces 62 are provided. As shown in FIGS. 1 and 3, the hydraulic cylinder mounting piece 62 includes a fourth hydraulic cylinder 61 (hydraulic cylinder for rotating the left and right frames) for rotating the left frame 5 and the right frame 6. The inner end of is pivotably attached.

  As shown in FIG. 3, a hydraulic cylinder mounting piece 63 for rotatably mounting the front end of the third hydraulic cylinder 42 for rotating the rear frame 4 is fixed to the center of the front frame member 56. Yes. The wheels 11 are rotatably attached to the rear ends of the left and right front / rear coupling frame members 58, respectively.

  As shown in FIGS. 3 to 5, a central pressure-reducing wheel 103 is rotatably attached to both left and right ends of the rear frame member 57 via a pressure-reducing wheel attachment plate 66.

  Further, as shown in FIGS. 1 to 5 and 7, pivot brackets 67 are fixed to the left and right of the center portion of the rear frame member 57, respectively. By this pivot attachment bracket 67, the rear frame member 57 is pivotally attached to the pivot attachment portion 31 of the outer frame member 17 of the main frame 3. As a result, the rear frame 4 can rotate about the pivot shaft 32 of the pivot portion 31 with respect to the main frame 3 by operating the third hydraulic cylinder 42.

  As shown in FIG. 1 and FIGS. 6 to 8, the left frame 5 and the right frame 6 extend in the front-rear direction by a front frame member 70 and a rear frame member 71, and connect the front frame member 70 and the rear frame member 71. Left and right front and rear connecting frame members 72 and rear auxiliary frame members 73 are provided.

  As shown in FIG. 6, the rear auxiliary frame member 73 is fixed in parallel to the rear of the rear frame member 71 via an outer fixing bracket 74 and an inner fixing bracket 75.

  The left frame 5 and the right frame 6 pass through attachment holes 76, 77, 78 (see FIG. 6) formed on the inner end sides of the front frame member 70, the rear frame member 71, and the rear auxiliary frame member 73, respectively. A rotation shaft 79 is attached. The rotating shaft 79 is rotatably supported by bearing cylinders 80 (see FIG. 8) provided at the left and right ends of the front frame member 56 of the rear frame 4, respectively.

  A hydraulic cylinder mounting piece 82 for fixing the outer end of the fourth hydraulic cylinder 61 is fixed to the rear frame member 71 at the center in the longitudinal direction. As described above, the inner end of the fourth hydraulic cylinder 61 is pivotally attached to the fourth hydraulic cylinder mounting pieces 62 at both ends of the front frame member 56 of the rear frame 4 (see FIGS. 1 and 8).

  Accordingly, as will be described later in the description of the operation, by operating the fourth hydraulic cylinder 61, the left frame 5 and the right frame 6 are respectively shown in FIG. It rotates horizontally from the state of FIG. 8 to the state of FIG.

  A hydraulic cylinder mounting piece 84 is fixed to the outer front and rear coupling frame members 72 of the left frame 5 and the right frame 6 (see FIG. 6). The hydraulic cylinder mounting piece 84 includes a fifth hydraulic cylinder 83 (the left leveling work tool and the right leveling work for rotating the left leveling work tool 91 and the right leveling work tool 92). The rear end of the tool rotating hydraulic cylinder is pivotally attached (see FIG. 1). The front end of the fifth hydraulic cylinder 83 is pivotally attached to a fifth hydraulic cylinder mounting piece 85 of a flat support frame 94 described later.

  In the left frame 5 and the right frame 6, a pivot bracket 86 is fixed to the lower part of the front end of the front / rear coupling frame member 72 (see FIG. 6). A left leveling work tool 91 and a right leveling work tool 92 are rotatably attached to the pivot attachment bracket 86.

  On the rear frame member 71 of the left frame 5 and the right frame 6, a left pressure wheel 101 and a right pressure wheel 102 are rotatably mounted between an outer pressure wheel mounting plate 87 and an inner fixing bracket 75. (See FIG. 6).

  As shown in FIG. 1, the leveling work machine 1 is provided with a left leveling work tool 91, a right leveling work tool 92, and a center leveling machine 93 as leveling work tools. The left leveling work tool 91 and the right leveling 92 are each provided with a side plate 98 at the outer end, but the central leveling 93 is not provided with the side plate 98. Except for this difference, these leveling tools 91 to 93 have substantially the same configuration.

  FIG. 9 shows the center leveling work tool 93. The leveling work tools 91 to 93 will be described with reference to FIG. The leveling work tools 91 to 93 each include a leveled plate support frame 94 that extends horizontally and horizontally, a reversing portion 96 that constitutes a leveled plate that is fixedly attached to the leveled plate support frame 94 via an attachment member 95, and An excavation part 115 is provided.

  The flat plate support frame 94 is provided with a rotation mounting portion 97 at the lower portion thereof. For the left leveling work tool 91 and the right leveling work tool 92, the rotation mounting portion 97 is rotatably attached to the respective pivot brackets 86 (see FIG. 6) of the left frame 5 and the right frame 6. It has been.

  Further, with respect to the center leveling work tool 93, a rotation attachment portion 97 is rotatably attached to the pivot shaft 29 (see FIG. 2) on the pivot attachment portion 29 of the attachment bracket 27 of the main frame 3. .

  Thus, the left leveling work tool 91 and the right leveling work tool are respectively applied to the front frame material 70 of the left frame 5, the front frame material 70 of the right frame 6, and the left and right outer frame materials 17 of the main frame 3. 92 and the center leveling work tool 93 can be rotated.

  A hydraulic cylinder mounting piece 85 is fixed to the upper surface of the flat plate support frame 94. Regarding the left leveling work tool 91 and the right leveling work tool 92, the hydraulic cylinder mounting piece 85 of the fifth hydraulic cylinder 83 is fixed. For the center leveling work tool 93, the front end of the first hydraulic cylinder 35 is pivotally attached to the hydraulic cylinder mounting piece 85.

  With such a configuration, the fifth hydraulic cylinder 83 and the first hydraulic cylinder 35 are operated, and the left leveling work tool 91, the right leveling work tool 92, and the center leveling work tool 93 are respectively set in the field. It is pivotable to tilt with respect to the surface.

  In this case, the hydraulic control is performed so that the left leveling work tool 91, the right leveling 92, and the center leveling 93 are independently and independently rotatable with respect to the field surface. It is good also as a structure to carry out, it is good also as a structure which controls hydraulically so that it can operate | move so that it can rotate at the same angle simultaneously, or it is good also as a structure which controls hydraulically so that any operation | movement can be selected suitably.

  As shown in FIG. 1 and FIG. 7, the leveling work machine 1 is provided with a left pressure wheel 101, a right pressure wheel 102, and a central pressure wheel 103, which are substantially the same. It is a configuration. The left pressure wheel 101, the right pressure wheel 102, and the central pressure wheel 103 are rotatably attached to the left frame 5, the right frame 6, and the rear frame 4 as described above.

  As shown in FIGS. 1 and 7, the leveling work machine 1 is provided with a left tine work tool 106, a right tine work tool 107, and a central tine work tool 108 as tine work tools. Have substantially the same configuration, and are attached to the left frame 5, the right frame 6, and the main frame 3, respectively.

  These mounting structures are as follows. The left tine work tool 106, the right tine work tool 107, and the center tine work tool 108 are each provided with a tine attachment rod 111 extending in the horizontal width direction and a plurality of tine attachment rods 111 attached to the tine attachment rod 111 at intervals in the width direction. The tine 112 is provided.

  A tine attachment rod 111 is attached to a tine support frame member 21 fixed to the main frame 3 via an attachment member 113, whereby the central tine work tool 108 is attached to the main frame 3 (FIG. 7). reference).

  Further, a tine mounting rod 111 of the left tine working tool 106 and a tine mounting rod 111 of the right tine working tool 107 are respectively attached to the front frame material 71 of the left frame 5 and the front frame material 71 of the right frame 6. It connects so that it may connect via 114 (refer FIG. 7).

  Accordingly, the left tine work tool 106 and the right tine work tool 107 are attached to the left frame 5 and the right frame 6, respectively.

  As shown in FIG. 1, the column 13 having the laser beam receiver 12 is provided such that its lower end base is fixed and stands on the main frame 3 (more specifically, the right outer frame member 17). ing.

  The laser beam receiver 12 receives a laser beam that defines a reference plane transmitted from a part of the periphery of the field, and transmits this laser beam to a control unit of a hydraulic mechanism that controls the rotation of the leveling tool. The leveling work machine 1 according to the present invention is characterized in that the leveling work tool, the pressure reducing wheel, and the tine work tool are compactly folded for convenience of transportation. In particular, the description is omitted.

(Function)
The operation of the leveling work machine 1 having the above configuration will be described. FIG. 1 shows a posture of a leveling work machine 1 that performs leveling work in a field. In this state, the left and right rotating shafts 79 are received and supported by the receiving portions 52 at both ends of the rotating shaft support frame member 22, and the rear frame 4, the left frame 5, and the right frame 6 are generally formed on the field surface. Is held in a substantially parallel posture.

  When performing leveling work on the field, the front end of the traction rod 2 is connected to the tractor, and the leveling work machine 1 is pulled and moved in the state shown in FIG. 1 by the tractor in the field. The left leveling work tool 91, the right leveling work tool 92, and the center leveling work tool 93 level the field surface.

  In this leveling operation, a laser beam that defines a reference plane is received by the laser light receiver 12, and the second hydraulic cylinder 40 is operated based on information relating to the reference plane, and the main frame 3 is moved to the traction rod 2 The main frame 3, the rear frame 4, the left frame 5, and the right frame 6 as a whole are turned into the traction rod 2. Adjust up and down.

  For example, in FIG. 1, when the second hydraulic cylinder 40 is operated to be retracted or extended, the main frame 3 rotates upward or downward with respect to the traction rod 2 around the pivotal attachment portion 38.

  As a result, the lower ends of the leveling work tools 91 to 93 of the main frame 3, the left frame 5, and the right frame 6 are moved upward or downward with respect to the field surface, and are determined based on a reference plane defined by the laser beam. The leveling operation can be performed so that the surface of the field becomes the same height as the predetermined leveling work surface.

  Further, the first hydraulic cylinder 35 and the fifth hydraulic cylinder 83 are operated, and the leveling work tools 93, 91, 92 are rotated to adjust the inclination with respect to the field surface. Fine adjustment can be made so that the level of the flat work surface is obtained.

  For example, in FIG. 1, when the first hydraulic cylinder 35 and the fifth hydraulic cylinder 83 are operated so as to be retracted or extended, the central leveling work tool 93 is centered on the pivot shaft 30 and the left leveling is performed. The work tool 91 and the right leveling work tool 92 are rotated in the clockwise direction or the counterclockwise direction, respectively, when viewed from the left side of the work progress direction around the pivot shaft of the pivot attachment bracket 86. . Accordingly, the leveling work tools 91 to 93 are tilted, and the tilt angle, depth, and the like are finely adjusted with respect to the field surface.

  Since the inclination angle of the leveling work machines 91 to 93 with respect to the field surface can be adjusted, the leveling work machines 91 to 93 can be appropriately tilted to reduce the traction force applied to the tractor and to reduce the load on the tractor. As in the conventional example, since the open soil can be prevented from becoming a mountain, the number of leveling operations can be reduced, the work efficiency of the field leveling operation can be increased, and the fuel of the towing tractor can be reduced. .

  In addition, by adjusting the inclination of the leveling work machines 91 to 93 in this way, for example, the unevenness of the surface of the field, the hardness and humidity of the soil, the condition of weeds, the various conditions of the field such as the weather, and the environment It is also possible to perform suitable leveling work.

  Next, when the leveling work machine 1 is moved to or from the field using a road or the like for transportation, or placed on a truck and transported, the leveling work tool, the pressure reducing wheel, and the tine work The tool is folded from the working state as shown in FIG. 1 to the transport state as shown in FIG. This folding is performed as follows.

  When folding the leveling work machine 1, first, the third hydraulic cylinder 42 is operated to extend, and the rear frame 4 is centered on the pivot shaft 32 (see FIG. 2) for the rear frame in the main frame 3. The wheel 11 is turned downward and is rotated in a direction perpendicular to the field surface. As a result, the rear frame 4, the left frame 5, and the right frame 6 are in an upright posture as shown in FIG. 7, and hold this.

  Next, the fourth hydraulic cylinder 61 is operated to extend, and the left frame 5 and the right frame are centered on the rotation shaft 79 (see FIG. 7) pivotally supported by the bearing cylinders 80 on the left and right sides of the rear frame 4. 6 is rotated horizontally, and as shown in FIG. 8, the posture is aligned in the front-rear direction, and this state is maintained.

  As shown in FIG. 8, the leveling work machine 1 includes the left and right leveling work tools 91 and 92, the left and right side pressure-reducing wheels 101 and 102, and the left side frame 5 and the right side frame 6 facing in the front-rear direction. Since the left and right tine work tools 106 and 107 are also directed in the front-rear direction, the overall width of the leveling work machine 1 is reduced.

  Therefore, when the leveling work machine 1 is pulled by an automobile or a tractor to move on a road or the like, the width of the road is not occupied. Also, as shown in FIG. 8, since the wheels 11 face downward, if the leveling work machine 1 is pulled by an automobile or a tractor, the wheels 11 of the leveling work machine 1 itself travel on the road and move. Is also possible. Even when the tractor is mounted and transported, it can be easily placed on the tractor loading platform.

  As mentioned above, although the form for implementing the leveling machine based on this invention was demonstrated based on the Example, this invention is not limited to such an Example, It was described in the claim It goes without saying that there are various embodiments within the scope of technical matters.

  Since the leveling work machine according to the present invention is configured as described above, it is not limited to the leveling work machine provided only with the leveling work tool, but in addition to the leveling work tool, a pressure reducing wheel, a tine work tool, etc. It can also be applied to leveling machines equipped with the above work functions.

DESCRIPTION OF SYMBOLS 1 Leveling machine 2 Towing rod 3 Main frame 4 Rear frame 5 Left frame 6 Right frame 11 Wheel 12 Laser beam receiver 13 Support column 17 Outer frame material 18 Inner frame material 19 Bonded frame material 20 Bonded frame plate 21 Tine support frame material DESCRIPTION OF SYMBOLS 22 Rotating-shaft support frame material 27 Mounting bracket 28 Fixing part of mounting bracket 29 Pivoting part for leveling work tools 30 Pivoting shaft for leveling work tools 31 Pivoting part for rear frames 32 Pivot support for rear frames Shaft 35 First hydraulic cylinder 36 Mounting piece for first hydraulic cylinder in main frame 37 Pivoting bracket for attaching traction rod 38 Pivoting portion for attaching traction rod 40 Second hydraulic cylinder 41 Second hydraulic cylinder Pivotally attached portion 42 Third hydraulic cylinder 43 Pivotally attached third hydraulic cylinder 44 3rd hydraulic cylinder mounting piece 48 in the ram 48 Second hydraulic cylinder mounting piece 52 in the traction rod 52 Receiving part of the rotary shaft support frame material 56 Front frame material 57 Rear frame material 58 Front / rear coupling frame material 61 4th Hydraulic cylinder 62 Fourth hydraulic cylinder mounting piece 63 in the rear frame 63 Third hydraulic cylinder mounting piece in the rear frame 66 Mounting plate for pressure-reducing wheel mounting 67 Pivoting bracket 70 Front frame material 71 Rear frame material 72 Front / rear coupling frame Material 73 Rear auxiliary frame material 74 Outer fixing bracket 75 Inner fixing bracket 76 Front frame material mounting hole 77 Rear frame material mounting hole 78 Rear auxiliary frame material mounting hole 79 Rotating shaft 80 Bearing cylinder 82 Hydraulic cylinder mounting piece 83 Fifth hydraulic cylinder 84 Fifth hydraulic cylinder mounting piece on the left right frame 85 Fifth hydraulic cylinder mounting piece on the flat support frame 86 Pivoting bracket pivotally mounted on the left right frame 87 Outer pressure reducing wheel mounting plate 91 Left side Leveling tool 92 right leveling tool 93 center leveling tool 94 leveling plate support frame 95 mounting member for attaching the leveling plate to the leveling plate support frame 96 reversing part of leveling plate 97 for rotation of leveling plate support frame Mounting part 98 Side plate 101 Left pressure wheel 102 Right pressure wheel 103 Center pressure wheel 106 Left tine work tool 107 Right tine work tool 108 Center tine work tool 111 Tine installation rod 112 Tine 113 Center tine work tool Tine attachment member 114 Tine attachment member of the tine work tool on the left and right side 115 Excavation of flat plate

Claims (3)

Equipped with a traction rod connected to the tractor, equipped with a main frame connected to the traction rod, a rear frame with wheels at the rear end, a left frame and a right frame, and leveling work on the front side of the main frame, left frame and right frame, respectively In leveling machine with tools,
The leveling work implement is pivotally attached to the front side of the main frame, the left frame, and the right frame, and is rotated by the operation of a hydraulic cylinder provided between the main frame, the left frame, and the right frame. dynamic and, Ri configuration der preparable the inclination angle with respect to the field surface,
The rear frame is pivotally attached to the rear end of the main frame, and is rotatable with respect to the main frame by the operation of a hydraulic cylinder provided between the main frame and the rear frame.
The left and right frames are pivotally attached to the left and right sides of the rear frame, respectively, and rotate with respect to the rear frame by the operation of the hydraulic cylinder provided between the left and right frames and the rear frame. Is possible,
During leveling work in the field, the main frame, the rear frame, the left frame and the right frame are held in a substantially parallel posture with respect to the surface of the field,
When transporting, the rear frame, the left frame and the right frame are held in a standing posture substantially perpendicular to the main frame, and the left frame and the right frame are orthogonal to the rear frame and face in the front-rear direction. A leveling machine characterized in that the machine is held in a normal posture .   The towing rod is rotatably attached to the main frame, and is rotated with respect to the main frame by the operation of a hydraulic cylinder provided between the main frame and the main frame, the rear frame, and the left side. The leveling machine according to claim 1, wherein the frame and the right frame can be adjusted in the vertical direction with respect to the towing rod. A tine work implement is attached to the main frame behind the leveling work implement, a pressure reducing wheel is attached to the rear frame, and a tine work implement is attached to the left and right frames respectively behind the flat work implement. The leveling work machine according to claim 1, wherein a pressure reducing wheel is attached .

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