JP2011087507A - Leveling auxiliary apparatus of tilling implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tilling apparatus that reduces burden at a ground-leveling part for leveling track channels formed by tractor rear wheels, has leveling performance not influenced by track of the traveling part of the tractor in the case of tilling operation especially by a tractor such as large-sized tractor, crawler type tractor, etc., and excellent handleability. <P>SOLUTION: The leveling auxiliary apparatus of a tilling implement has a constitution that: the leveling auxiliary apparatus 3 for backfill of soil to track channels formed by the tractor rear wheels 10 is arranged between the tractor rear wheels 10 and the soil grinding part 20 of the tilling implement 2, attached to a support frame installed in parallel with a main frame, adjustable vertically and horizontally; a handle is attached to the top of a support rod 31; earthing up plates 33 that are arranged obliquely in the traveling direction in the plane view toward the track channels of the tractor rear wheels 10, are fixed to the lower part of the support rod, and can be arranged at a symmetric positions in relation to the center of the tractor. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a leveling device for a scraping work machine that is used by being mounted on a tractor.

  Japanese Utility Model Laid-Open No. 54-97406 (Prior Art 1) or Japanese Utility Model Publication No. 49-7139 (Prior Art 2) is disclosed as a prior art of this type of scraping apparatus.

  In Japanese Utility Model Publication No. 54-97406 (prior art 1), a bracket is attached to the left and right portions corresponding to the rear wheel of the tractor at the front edge of the rotor cover of a crushed soil leveling machine towed by a tractor. The mulch plate is fixed to the front substantially in the shape of C, and the burial plate is inclined at an appropriate angle with respect to the advancing direction, and the base is fitted to form an inclined guide wall, and the anterior portion is slightly inclined with respect to the advancing direction. A tractor wheel trace removing device in a crushed soil leveling machine characterized in that it is formed to open outwardly. Also, in the tractor wheel trace removing device, “the bracket and the digging plate are connected to the bracket. The technology is “adjustable up and down”.

  Further, Japanese Utility Model Publication No. 49-7139 (Prior Art 2) states that “the upper part of the support bar 15 having the bottom plate 14 pivotally attached to the lower end is engaged with the recess of the clasp 17 to attach the support bar 15 to the main girder. The paddy paddle is connected to a four-wheel tractor for farming that is fixed to 13 and arranged on both sides of the center line of the rubber wheel 1 behind the ground contact surface of the rubber wheel 1 of the tractor a. There is a description of "a device for erasing the marks of rubber wheels in a scraper".

Japanese Utility Model Publication No. 54-97406 (prior art 1) Japanese Utility Model Publication No. 49-7139 (prior art 2)

  The leveling technology at the time of scraping work has been improved by improving the technology of the ground breaking and leveling section with the ground scraping device, but in recent years the tractor has become a four-wheel drive and the field conditions have improved, Sometimes work is done without attaching auxiliary wheels to the rear wheels. For this reason, it is easy to form deep ridge grooves by the rear wheel of the tractor, and in leveling work by scraping work, the soil that has been formed and moved can not be returned to the ridge groove, and the trace of the tractor rear wheel is low and streaks It may remain. In addition, as the size of tractors has increased, the width of tires has increased, and tractors with crawler type traveling parts have come to be used. It has become a disadvantageous condition for work.

  The “tractor wheel mark removal device in a ground breaking machine” disclosed in the prior art 1 has a structure in which a bracket is attached to a front edge portion of a rotor cover and a digging plate is fixed, but a large amount of moved soil is returned. In addition, the structure is not sufficient for towing work by a tractor that is increasing in size. Moreover, the “device for removing the traces of rubber wheels in a paddy paddy machine connected to an agricultural four-wheel tractor” disclosed in the prior art 2 is sufficient when handling soil during adjustment and returning a large amount of moved soil. There is a problem that cannot be said to be a simple structure.

  For this reason, the object of the present invention is to reduce the burden on the leveling part for leveling the groove formed in the rear wheel part of the tractor, especially when performing a scraping operation with a large tractor or a crawler type tractor, etc. Another object of the present invention is to provide an easy-to-handle scraping device having leveling performance that is not affected by traces of the traveling section.

  In order to solve the above-mentioned problem, it is mounted on the rear side of a tractor provided with a leveling plate which performs a leveling operation by pressing the soil crushed by the crushed soil portion behind the crushed soil portion which is long in the direction perpendicular to the traveling direction. A leveling assist device is provided between the rear wheel of the tractor and the crushed portion of the scraper to provide a leveling assist device for backfilling the soil into the trough formed by the tractor rear wheel. The apparatus is provided on a support frame provided in parallel with the main frame in front of the main frame that holds a drive shaft that drives the crushed portion, and a holding bracket that is slidable to the left and right with respect to the support frame, and a holding bracket A support rod provided on the upper side of the support rod and a handle provided on the upper portion of the support rod, and a lower groove formed at the rear of the tractor rear wheel obliquely with respect to the traveling direction of the tractor in plan view. The mulching plate is fixed in the shape of a plate, with the front upper end on the rear view being longer forward and the lower end being shorter than the upper end, and the leveling assist device is symmetrical with respect to the tractor center. We propose a leveling assist device for a scraping work machine, which is characterized by being attachable to a position.

In addition, the scraping work used by being attached to the back of a tractor provided with a leveling plate that presses the soil crushed by the crushed portion and that is leveled by pressing the soil crushed by the crushed portion in the direction perpendicular to the traveling direction. In this machine, the scraping work machine is composed of a central working part and left and right extension working parts, and the left and right extension working parts can be folded into the non-working state on the central working part side, respectively, A leveling assist device is provided between the soil breaker of the work machine to backfill the soil in the trough formed by the rear wheel of the tractor. A holding bracket and a support rod provided on the holding bracket so as to be vertically slidable,
A handle is provided on the upper side of the support rod, and a pallet plate provided toward the ridge groove formed by the rear wheel of the tractor is obliquely attached to the lower side of the traveling direction of the tractor in plan view. Can be arranged in front of the boundary between the central working part and the left and right extension working parts, and can be mounted at a symmetrical position with respect to the center of the tractor. Propose the device.

  According to the present invention, the leveling auxiliary device for backfilling the soil into the trough formed by the tractor rear wheel between the tractor rear wheel and the crushed portion of the skimmer is provided with the drive shaft for driving the crushed portion. By providing it on a support frame provided in front of the main frame to be held in parallel with the main frame, the rigidity is so high that it can sufficiently cope with the load of a large tractor for backfilling a large amount of soil. In addition, since it is provided in front of the main frame, it can be easily adjusted in the left / right and up / down directions, and the handle provided at the upper part of the support rod is easy to handle.

  Also, below the support rod, a mulch plate provided obliquely toward the ridge groove of the tractor rear wheel is fixed obliquely with respect to the traveling direction of the tractor in plan view. Since it is plate-like formed shorter than the upper end side, the soil raised to the side of the ridge is surely guided to the ridge groove and backfilled with the progress of the tractor. In addition, because the lower part of the front tip is formed short, a part of the soil located at the tip is released to the side, so that the raised part is buried in the ridge without forming a large step at the tip. Therefore, the burden on the crushed soil part and the leveling part located at the rear is reduced, and the leveling uniformity is assisted.

  Furthermore, in the case of a scraper composed of a central working part and left and right extension working parts, the crushed part is sufficiently crushed at the folding boundary by a bearing part and a drive chain case for supporting the crushed drive part. Since the nail for moving soil cannot be arranged, the folding boundary part is a part where the leveling performance of the crushed soil is not sufficient compared to other parts. For this reason, when a large amount of soil raised by the rear wheel of the tractor is located in this portion or when a deep culvert is located, the leveling ability of the crushed soil becomes insufficient and the leveling due to scraping becomes poor. In the present invention, the leveling auxiliary device can be arranged in front of the boundary between the central working unit and the left and right extension working units, and can be mounted in a symmetrical position with respect to the center of the tractor. The soil swelled to the side is backfilled by the leveling auxiliary device in the dredging groove formed by the ring, and a large amount of soil is located at the folding boundary of the ground breaking flat part behind and a deep dredging groove is located By avoiding this, it is possible to assist the leveling of the scraper.

The side view of the state equipped with the tractor of the scraping work machine which implemented this invention The top view of the state equipped with the tractor of the scraping work machine which implemented this invention Front view of a scraper working machine embodying the present invention Sectional side view of a cross section of a scraping work machine embodying the present invention

  Embodiments of the present invention will be described below with reference to the following drawings. FIG. 1 is a side view showing a state where the rake is mounted on a tractor according to the present invention, FIG. 2 is a plan view showing the state where the rake is also mounted on the tractor, and FIG. 4 shows a side view of a principal part of a cross-section working machine embodying the present invention.

  The scraping work machine 2 shown in this example is a device that is mounted on the tractor 1 and performs scraping and ground breaking work. A three-point link hitch mechanism comprising a pair of left and right lower links 12 provided at the rear of the tractor 1 and a top link 11 provided at the upper center thereof is connected to a connecting frame 25 (referred to as a quick coupler or auto hitch). The lower link pin 251 provided in the horizontal direction on the lower link 12 and the top link pin 252 provided in the horizontal direction on the top link 11 are respectively inserted and attached, and provided on the front frame of the scraper work machine 2. A pair of left and right lower pins 254 and an upper pin 253 provided at the front end portion of the top mast 26 provided above the center are engaged with and engaged with the engaging portion of the connecting frame 25.

  The connecting procedure is as follows. First, the hook 255 above the connecting frame 25 is engaged with the upper pin 253 of the top mast 26, and the three-point link mechanism of the tractor is raised to raise the connected connecting frame 25. The lower pin 254 on the second side is pulled toward the connecting frame 25 side and engaged with and connected to the engaging portion at the lower part of the connecting frame 25. The lower engaging portion hooks a pin fixing hook 256 provided on the connecting frame 25 to the lower pin 254 to prevent it from coming off.

  An input shaft 27 provided so as to project in the center horizontal direction in front of the scraping work machine 2 is connected to a PTO shaft (not shown) of the tractor 1 by a universal joint, and inputs the rotational power of the tractor 1 to the side of the scraping work machine 2. Is for. The rotational power input to the input shaft 27 is input to the left and right center gear box 28 provided by projecting the input shaft 27, and extends from the gear box 28 in the left-right horizontal direction via the bevel gear in the gear box 28. A transmission roller chain that is transmitted to a transmission chain case provided on either side in the left-right direction by a drive shaft 24 in the main frame 22 provided, is transmitted to a sprocket built in the transmission chain case, and is wound around this. Thus, the sprocket fixed to the rotor shaft 202 of the crushed portion 20 provided below is driven to rotationally drive the rotor shaft 202. The crushed portion 20 is provided by fixing the crushed claw 201 radially to the rotor shaft 202 that is long in the machine width direction, and is configured to crush the soil with the rotating crushed claw 201 and move in the left-right direction. The upper part of the rotor shaft 202 prevents scattering of crushed soil covered with the rotor cover 203.

  A leveling portion 21 is provided at the rear portion of the rotor cover 203, and the first leveling plate 21a that rotates in the vertical direction with the rear end of the rotor cover 203 as a fulcrum, and the vertical adjustment with the rear end portion as a fulcrum. A leveling plate 210 constituted by a second leveling plate 21b that is freely connected is provided to receive the soil that is crushed and scattered by the crushed portion 20 and leveled at the rear portion.

  A rake 211 is disposed inside the first leveling plate 21 a of the leveling unit 21. The rake 211 is provided with a rake body rotation boss, which is the center of rotation, in the horizontal direction, and a rake holding plate that holds a round bar rake 211 that is long in the traveling direction is fixed to the rake 211. The rake 211 is a rake holding plate. The front end is fixed to the rear side of the first ground leveling plate 21a and is arranged at equal intervals in the width direction of the first leveling plate 21a. It is configured to be more buried.

  Between the tractor rear wheel 10 and the soil crushing part 20 of the scraper working machine 2, a leveling assisting device 3 is provided for refilling the soil into the trough formed by the tractor rear wheel 10. The leveling assisting device 3 is attached to a support frame 23 formed of a round pipe in parallel with the main frame 22 in front of the main frame 22 provided in the horizontal direction perpendicular to the traveling direction. The leveling assisting device 3 is provided with a holding bracket 30 that is slidable to the left and right with respect to the support frame 23, a support rod 31 that is slidable up and down on the holding bracket 30, and a handle 32 above the support rod 31. In addition, a basking plate 33 provided toward a grooving groove formed by the tractor rear wheel 10 is fixed obliquely with respect to the traveling direction of the tractor 1 in a plan view. It has a plate-like shape that is long forward and the front lower end side 331 is shorter than the upper end side.

  The mulching plate 33 is provided so that the soil on the side of the ridge groove formed by the tractor rear wheel 10 is located on the raised portion, and is raised by the mulching plate 33 provided obliquely in plan view as the tractor 1 advances. Guide the soil to the trench and backfill. In this example, it is provided only on the outside of the left and right tractor rear wheels 10, but it may be provided on the left and right of each of the tractor rear wheels 10 to backfill the soil from the left and right of the ridge.

  A mounting portion of the leveling auxiliary device 3 of the support frame 23 formed of a round pipe is fixed by a U-shaped fitting with a side view contacting the round pipe with the open portion abutting on the round pipe and welding to the round pipe. The holding bracket 30 is brought into contact with a mounting surface formed by a plane facing forward, and the holding bracket 30 is fastened and fixed by a U bolt 35 inserted forward from the rear to the outer periphery of the round pipe of the support frame 23. Has been. When the U-bolt 35 is loosened, the U-bolt 35 can be moved left and right along the support frame 23, and the mounting position of the leveling auxiliary device 3 in the left-right direction can be adjusted. There is little need to adjust the left and right direction as soon as the tractor and work implement are determined.

  The holding bracket 30 is provided with a rectangular pipe-shaped holding portion formed of a vertical guide hole having a rectangular cross section, and a support rod 31 having a rectangular cross section and being vertically long can be slidably inserted into the holding bracket 30. Fixing holes provided in the horizontal direction on the 30 side and the support rod 31 side are superposed and the fixing pins 34 are inserted and fixed, and the vertical position can be adjusted by replacing a plurality of holes provided above and below the support rod 31. . The fixing pin 34 is always urged by a spring toward the insertion and fixing side and is attached to the holding bracket 30. When the fixing pin 34 is pulled horizontally against the urging force, the fixing pin 34 is detached and the support rod 31 can be moved up and down. When returned, it is inserted into the fixing hole by the biasing force of the spring. A handle 32 is provided at the upper end of the support rod 31, and is configured so that it can be lifted with one hand and the fixing pin 34 can be inserted and removed with the other hand when adjusting the vertical position.

  Below the support rod 31, a dirt-carrying plate 33 that is obliquely directed outward with respect to the traveling direction of the tractor 1 in plan view is fixed, and the soil is raised to the side of the trough formed by the tractor rear wheel 10. Is guided to the trough by the advance of the tractor 1. The mulching plate 33 has a plate shape in which the front upper end side 330 in the rear view is longer in the front and the front lower end side 331 is shorter than the upper end side, and a part of the soil located at the tip portion is laterally formed. By escaping, the rising portion can be backfilled in the trough groove without forming a large step at the tip portion, so that the burden on the crushed soil portion 20 and the leveling portion 21 located at the rear is reduced and the leveling uniformity is assisted. The adjustment in the vertical direction is adjusted each time because the optimum position differs depending on the tilling depth of the crushed soil portion 20, the soil quality, the depth and size of the trench, and the like.

  The crushing unit 20 and the leveling unit 21 are composed of a central work unit 204 and left and right extension work units 205 and 205 ′, and the left and right extension work units 205 and 205 ′ are folded to the upper part on the central work unit 204 side. It is comprised so that it can fold around the rotation fulcrum 206. For this reason, each of the crushed parts 20 needs to be provided with bearing parts for supporting the crushed drive part, a driving chain case, etc. at both ends, and the folding boundary parts 207 and 207 ′ are sufficiently provided for the crushed and soiled parts. The moving crushing claw 201 cannot be disposed, and the folding boundary portions 207 and 207 ′ are portions where the leveling performance of the crushing soil is not sufficient compared to other portions. For this reason, when a large amount of soil raised by the tractor rear wheel 10 is located in this portion, or when a deep culvert is located, the leveling ability of the crushed soil becomes insufficient, and leveling due to scraping becomes poor. For this reason, an adjustment margin in the left-right direction of the support frame 23 is provided so that the leveling auxiliary device 3 can be disposed in front of the boundary portions 207, 207 ′ between the central working unit 204 and the left and right extending working units 205, 205 ′. The soil swelled in the lateral direction is refilled in the eaves formed by the tractor rear wheel 10 at the front position of the crushed portion 20 by the leveling auxiliary device 3, and the folding boundary portions 207, 207 'of the crushed ground leveled portion at the rear It is possible to avoid the location of a large amount of soil and the location of deep ridges.

  INDUSTRIAL APPLICABILITY The present invention is used for agricultural machines intended for leveling work such as a scraping work machine and a crushing work machine, which are mounted and used behind a traveling machine such as a tractor.

DESCRIPTION OF SYMBOLS 1 Tractor 10 Tractor rear wheel 11 Top link 12 Lower link 2 Scraping work machine 20 Crushing part 201 Crushing claw 202 Rotor shaft 203 Rotor cover 204 Central working part 205,205 'Extension working part 206 Folding rotation fulcrum 207,207' boundary Section 21 Leveling section 210 Leveling plate 21a First leveling board 21b Second leveling board 211 Rake 22 Main frame 23 Support frame 24 Drive shaft 25 Connection frame 251 Lower link pin 252 Top link pin 253 Upper pin 254 Lower pin 255 Hook 26 Top mast 27 Input shaft 28 Gear box 3 Leveling assist device 30 Holding bracket 31 Support rod 32 Handle 33 Drawer plate 330 Front upper end side 331 Front lower end side 34 Fixing pin 35 U bolt

Claims (2)

In a scraping work machine that is mounted and used behind a tractor that is provided with a leveling plate that performs leveling work by pressing the soil crushed by the crushed soil part in the direction perpendicular to the traveling direction and the soil crushed by the crushed soil part ,
A leveling assist device is provided between the tractor rear wheel and the crushed part of the scraper, and the leveling assist device is used to drive the crushed part. A holding bracket provided in front of the main frame holding the shaft and provided in parallel with the main frame, and provided to be slidable to the left and right with respect to the support frame, and a support rod provided to be slidable in the vertical direction And a handle is provided at the upper part of the support trough, and at the bottom, a shredder plate provided toward the trough groove formed by the rear wheel of the tractor is fixed obliquely with respect to the traveling direction of the plan view tractor, Rear flat front upper end side is long forward and lower end side is shorter than the upper end side, the leveling auxiliary device can be attached to the symmetric position with respect to the tractor center Hitoshitaira aid of puddling working machine, wherein. In a scraping work machine that is mounted and used behind a tractor that is provided with a leveling plate that performs leveling work by pressing the soil crushed by the crushed soil part in the direction perpendicular to the traveling direction and the soil crushed by the crushed soil part ,
The scraper work machine is composed of a central work part and left and right extension work parts, and the left and right extension work parts can be folded into the non-working state on the central work part side, respectively. Between the crushed soil part, a leveling assist device is provided to backfill the soil into the trough formed by the rear wheel of the tractor,
The leveling assist device has a holding bracket that is slidable to the left and right with respect to the scraping work machine, a support rod that is slidable up and down on the holding bracket, a handle provided on the support rod, and a flat surface below A mulch plate provided toward the ridge groove formed by the tractor rear wheel obliquely with respect to the traveling direction of the visual tractor is fixed, and the mulch plate is a boundary between the central working portion and the left and right extension working portions. A leveling assisting device for a scraping work machine, characterized in that it can be placed in front of the part and can be attached to a symmetrical position with respect to the center of the tractor.

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