JP5303300B2 - Scraping work machine and mudguard used for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make mudguards mounted in front of a puddling work machine to have the function of pulling floated products, such as straws, floated on the muddy water of a field into the inside of a shield cover. <P>SOLUTION: The puddling work machine 10 mounted on the rear portion of a tractor 20 and having a tilling rotor 6 which receives a power from the tractor 20 and is rotated on a horizontal axis and a shield cover 2 for covering the upper side of the tilling rotor 6 is characterized by connecting mudguards 1 to the travel direction front side of the shield cover 2. The lower end portions 1f of the mudguards 1 are inclined from the downward to the upward from both the lateral sides to the central side of the puddling work machine 10 to the central portion side. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is a scraper working machine equipped with a tilling rotor that is attached to the rear part of a tractor and cultivates a farm field, and in particular, for the purpose of preventing scattering of mud and the like to be splattered by tilling claws protruding from the tilling rotor. The present invention relates to a scraping work machine in which a mudguard material is attached to the front side of a shield cover, and a mudguard material used therefor.

  When the tilling rotor of the substitute scraper rotates down-cut, the muddy water scraped when the tilling claw comes out of the muddy water surface is scattered toward the shield cover by centrifugal force. This muddy water flows toward the front side along the inner peripheral surface of the shield cover. However, since the muddy water drops from the front end portion of the shield cover, it hardly scatters to the tractor.

  However, when the tilling nail bites into the muddy water, the surface of the water is struck violently, so that the muddy water scatters, and the scattered muddy water may reach the tractor located in front of the scraper. In such a case, a splash prevention cover may be connected in front of the shield cover for the purpose of preventing muddy water from scattering (see Patent Document 1).

  When the anti-scattering cover is connected in a state of being suspended in front of the shield cover as in Patent Document 1, the anti-scattering cover faces the direction along the direction of rotation of the tilling rotor. It is considered that the mud and mud scattered can be blocked to some extent.

  However, since the anti-scatter cover is connected to the shield cover and suspended, the anti-scatter cover may be caught on the tilling rotor side during scraping work, or it may turn up to the front side due to the scattered mud. The scattering prevention cover cannot be expected to have a stable scattering prevention effect. In this respect, it is considered to be advantageous to fix the scattering prevention cover to the shield cover in a state in which the scattering prevention cover is inclined from the upper side to the lower side in the advancing direction (see Patent Document 2).

On the other hand, the plowing machine runs on the field mainly for the purpose of cultivating the field where mud is stored on the mud before the planting of the paddy field. Since these floating substances are often caught in seedlings at the time of planting, it is desirable to remove them from the field. From the viewpoint of removing this floating substance, a front rake body is also attached to the work machine to draw the floating substance such as firewood to the center side in the work machine width direction in order to plow the floating substance into the cultivated soil. Reference 3).

Japanese Patent Laid-Open No. 2001-16904 (Claim 1, Claim 2, Paragraphs 0011, 0017 to 0019, FIGS. 1 to 4) Japanese Utility Model Publication No. 49-43406 (Specification, page 3, line 5 to line 17, drawing) Japanese Patent Laying-Open No. 2005-13008 (claim 8, paragraphs 0021, 0022, 0026, FIG. 8)

  In Patent Document 1, the anti-scattering cover is suspended from the shield cover as described above. However, when the tip of the anti-scattering cover is immersed in muddy water, suspended matter existing in front of the anti-scattering work is removed. It may not have a function of guiding to the center side in the work machine width direction, and conversely, suspended matter may be diffused outside the tilling rotor.

  In Patent Document 3, the front rake body connected to the front side of the work machine allows forcibly floating floating material such as firewood existing in front of the work machine into the mud of the field. Since it does not have the function of preventing the scattering of mud and mud from the inside, it is not used as the above-mentioned scattering prevention cover.

  In view of the above background, the present invention proposes a scraper working machine in which a mudguard material having a function of guiding suspended matter to the tilling rotor side is mounted in front of the shield cover, and a mudguard material used therefor.

According to a first aspect of the present invention, there is provided a scraper working machine including a tilling rotor that is attached to a rear portion of a tractor and that rotates around a horizontal axis by receiving power from the tractor and a shield cover that covers the top thereof. ,
The chamfering machine has a lower end inclined from the lower side to the upper side from both sides in the width direction to the center side, and the lower end portion is immersed in muddy water, and the chamfering machine moves forward in the traveling direction. A mudguard material that moves mud water that is sometimes present in the forward direction from both sides in the width direction of the scraping work machine to the center side is connected to the forward direction in the traveling direction of the shield cover.

  Since the front rake body is arranged in front of the work machine (including the skimming work machine) as described above, the floating substance can be guided to the work machine side, so that the floating substance is guided to the shield cover. In order to achieve this, it is appropriate to dispose a member that can correspond to the front rake body in front of a scraping work machine (hereinafter referred to as a work machine in this item). Therefore, a mudguard material is connected to the front side of the shield cover in the traveling direction, and this mudguard material has a function of attracting mud water to guide the mud water present on the front side of the working machine in the traveling direction. It becomes possible.

  Since the mudguard is connected to the front side of the shield cover, the mud and mud that the tilling rotor scoops up is received on the back and dropped, and the tractor is prevented from scattering to the tractor side. From the viewpoint of protecting from muddy water and mud, it is basically formed in a plate shape with length and width in the width direction and height direction of the work equipment. Moreover, from the meaning of dropping muddy water and mud received on the back side to the front side without scattering to the front side, the thickness is such that it is not easily bent and deformed to the front side by pressure due to muddy water or the like.

  On the other hand, since the mudguard material is connected to the shield cover of the work machine, the lower end part may be immersed in the mud water, so that the mudguard material may receive excessive resistance from the rice stocks and soil blocks during work. It is desirable to have elasticity that can be appropriately bent and deformed by resistance from the rice stock and soil mass received by the lower end. From the above, the mudguard is made of a material having moderate elasticity such as a synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, vinyl acetate, or a rubber (synthetic rubber), or a metal material such as a steel plate or stainless steel. Produced.

As shown in FIG. 10, when the lower end of the mudguard is horizontal, the lower end of the mudguard does not act so as to actively generate a flow in the mud, but for example, FIGS. 11- (a) to (d) As shown in FIGS. 13- (a) and (b), if the lower end portion of the mudguard is inclined from the lower side to the upper side from both sides in the width direction of the work machine, the lower end portion of the mudguard material 2- (a) in which muddy water is immersed in the muddy water, it is possible to have a function of moving muddy water existing in front of the mudguard from the both sides in the width direction of the work implement to the center side. The inclination angle of the lower end portion is arbitrary, but the narrower the inclination of the lower end portion with respect to the horizontal direction, the wider the level of muddy water that can generate the flow can be. On the other hand, the shallower the slope of the lower end with respect to the horizontal direction, the more limited the muddy water level at which the flow can be generated.
Moreover, as shown in FIG. 11- (a), the mudguard is shown in FIGS. 11- (b) to (d) and FIGS. 13- (a), (b) when the length direction is not divided. Thus, the length direction may be divided into a plurality of receiving pieces by slits. The lateral width of the receiving piece in the machine width direction is arbitrary. In this case, it does not matter whether or not the slit is inclined. Moreover, it does not ask about the width of a slit. Therefore, in the case in a case where the length direction of the mudguard member is divided into a plurality of receiving piece, inclined according to claim 1 and 5, provided in the lower end part of the receiving piece, It may be provided at the lower end portion of all the receiving pieces (claims 2, 6).
That is, there is a case where the slope of the lower end is continuously attached in the length direction and a case where it is attached discontinuously. Moreover, it is not necessary to make the inclination angle constant regardless of whether the lower end portion is inclined continuously or discontinuously.

  When the muddy water present in front of the mudguard is about to be pushed forward by the lower end of each receiving piece, the muddy water is immersed in the muddy water because of the resistance that the muddy water receives from the muddy water of the receiving piece. Because the resistance received by the muddy water is small, the muddy water tends to go to the side where the resistance from the receiving piece is small. As a result, the muddy water present in front of the mudguard material generates a water flow that moves from both sides in the width direction of the work machine with high resistance to the central part with low resistance as indicated by arrows at the lower end of each receiving piece. It is promoted that an object is guided to the work machine center side and is embedded in the mud by the tilling rotor. When the entire lower end of the receiving piece is immersed in the muddy water, a similar water flow is generated, and the floating material is guided to the center of the work machine and is promoted to be embedded in the mud by the tilling rotor.

  Trying to go to the side where the resistance from the receiving piece is small is also applicable to the suspended matter blocked by the mudguard material, so that the suspended matter is guided to the center in the width direction of the work machine by riding on the water flow generated in the muddy water. In addition to this, it is also guided directly to the center side in the work machine width direction.

Further, as shown in FIGS. 11- (c), (e), (f), the lower end surface of the mudguard material (receiving piece) with the inclination shown in FIGS. 11- (a), (b), (d) ( If the sloping material is slanted from the bottom to the top side from the back side to the top side, the muddy water that collides with the bottom surface of the mudguard material within the thickness range of the mudguard material The effect of guiding to the club side increases. In FIG. 11- (f), the right side is the front side of the mudguard.
Also, the lower end surface (downward surface) of the mudguard material (receiving piece) in FIGS. 13- (a) and (b) is also directed from the lower side to the upper side from the back side to the surface side of the mudguard material as described above. Can be tilted.

  In this case, when the muddy water present in front of the mudguard shown in FIGS. 11 and 13 is pushed out from the lower end of the mudguard to the front side in the traveling direction, the lower end surface of each receiving piece is indicated by an arrow. Since the water flow which moves to the center part side where resistance is small from the width direction both sides of the work machine with large resistance is generated, the guidance effect to the work machine width direction center part side with respect to muddy water and suspended solids is enhanced.

  In the case of FIG. 11 and FIG. 13, the lower end portion of each receiving piece is inclined, so that the end portion on the both sides in the width direction of the work implement becomes the lowest end level. When the lower end is immersed in the muddy water surface (the level shown in FIGS. 8 (a) and 15 (a)), the lower end near the center in the width direction of the work implement and the water surface due to the inclination of the lower end. Since a gap is formed between the two, a suspended matter is easily taken into the shield cover from the gap due to the water flow generated by the lower end.

  Floating matter on the muddy water is guided to the work machine side by the water flow and taken into the shield cover, so that the floating matter is caught in the tilling rotor and embedded (mud) in the mud. Become. Since the suspended matter is embedded in the mud, the entrapment in the seedling due to the floating matter floating at the time of rice planting is eliminated, and the influence of the suspended matter on the seedling and the planting operation are avoided.

The mudguard material alone is attached to the rear part of the tractor, and is connected to the shield cover of the scraper working machine including the tilling rotor that rotates around the horizontal axis by receiving the power from the tractor and the shield cover that covers the top,
The scraping work machine has a lower end portion inclined from the lower side to the upper side in the length direction from one side to the other side, and the lower end portion is immersed in the muddy water toward the front side in the traveling direction of the scraping work machine. The muddy water existing forward is moved from one side to the other side in the length direction of the scraping work machine (claim 5).

  Here, “one side in the length direction” corresponds to “both sides in the width direction of the cutting work machine” in claim 1, and “the other side in the length direction” in “width direction center part side of the cutting work machine” in claim 1. ". “One side in the length direction” and “the other side” mean that a single mudguard can be used with the front side and the back side reversed. If two mudguards of the same shape and the same dimensions are arranged symmetrically with respect to the center in the width direction of the scraping work machine, then " By having a lower end with an inclined slope toward it "(Claim 1).

  There may be one mudguard material in the width direction of the work machine, and it may have a length that covers the entire width (full length) of the shield cover, or multiple sheets, continuous or intermittently arranged, so that the total width of the shield cover In some cases. In the case where the mudguards are arranged intermittently, the mudguards adjacent to each other are arranged at intervals such that mud water is not discharged from the gap between them to the surface side of the mudguard.

  When the mudguards are arranged over the entire width of the shield cover, there is no gap between adjacent mudguards, so that the effect of preventing muddy water and the like is prevented. However, in the portion directly behind the tractor having a three-point link or the like, muddy water is blocked by these members, so there is little influence even if there is no mudguard.

  After all, it is preferable that the mudguard material for the purpose of preventing muddy water scattering on the tractor is disposed over the entire portion except the portion directly behind the tractor. The mudguard material having a lower end portion inclined from the lower side to the upper side from both sides in the width direction to the central side of the skimming work machine is mud or floated if it is formed at least in the regions on both sides in the width direction. The effect of guiding the machine to the center side of the work equipment is expected.

  The mudguard is connected to the shield cover in the height direction of the working machine, and in principle, has a height at which the lower end or the lowermost end contacts the muddy water surface or is immersed in the muddy water during work.

  The mudguard may be divided into a plurality of receiving pieces in the length direction as shown in FIGS. 11- (b) and (c). Further, as shown in FIGS. 11- (d), (e), FIGS. 13- (a), (b), the mudguard material is divided into a plurality of receiving pieces by forming at least one slit. There is also a case. The length direction of the slit has a shape such as a straight line, a curve, or a combination of a straight line and a curve. Further, as described above, it does not matter whether or not the slit is inclined.

  The mudguard material has one or more slits in the height direction from the lower end, and is basically divided into a plurality of receiving pieces in the length direction across the slit. Shows a warm and warm shape.

  When a plurality of mudguards are mounted in the width direction of the shield cover, the mudguards are symmetrical with respect to the center in the width direction as shown in FIG. 1, FIG. 3, FIG. 13, or FIG. Mounted symmetrically. When one mudguard has a length over the entire width of the work implement, each lower end is formed symmetrically with respect to the center in the length direction of the mudguard.

  In Claim 3, as shown in FIG. 12- (b), the surface of the lower end portion is inclined from the front side to the rear side from the both sides in the width direction of the work implement to the center side. In this case, the presence or absence of a slit does not matter. As the muddy water existing in front of the mudguard material moves toward the central part side where the resistance is small along the surface of the lower end part, the mudguard material is shown as shown by the arrow as in the case of FIG. The muddy water present in front of the water moves to the center side of the work machine, and the suspended matter is guided into the shield cover.

  The mudguard material in the scraping work machine according to claim 3 is provided with an inclination from the front to the back of the scraping work machine from the one side in the length direction to the other side on the surface of the lower end portion as a single unit. This is a constituent requirement (claim 7). Here, “the length direction” also means “the length direction” in claim 5, and “the length direction one side” and “the length direction other side” are respectively “the width of the chamfering work machine” in claim 1. Corresponding to the “direction both sides” and “the central side in the width direction of the skiving machine”.

  Since the mudguard can be worn or damaged by continuous use, it is in principle detachably connected to the shield cover. The mudguard material has a connection part 1a connected to the front part (the hanging part 2b in the embodiment) located on the front side in the traveling direction of the shield cover on the upper side (near the upper end part in the width direction), and thus is separated by a slit. Each receiving piece 1e is mounted on the work machine while maintaining a state in which it can behave independently (FIGS. 8 and 15). In this case, it does not matter whether it is detachable. The mudguard material having the connection part 1a above becomes part of the shield cover by being connected to the front part of the shield cover at the connection part 1a.

  When the mudguard material is viewed in a longitudinal section, the shield cover in a state where the mudguard material is inclined from the front side to the rear side in the traveling direction of the work machine from the upper side (connecting portion) to the lower side (receiving piece) as shown in FIG. (Claim 4) is present in front of the mudguard material, so that suspended matter and mud water that collide with the front surface of the mudguard material are guided to the lower side of the mudguard material along the inclined front surface. The effect of taking in floating matter and the like into the shield cover is exhibited.

  In this case, the back surface of the mudguard material is inclined from the front side toward the rear side in the traveling direction, so that the mud flowing down the back surface of the mudguard material can be easily taken into the lower side of the back side of the mudguard material. The slope from the connection part to the lower end part is normally formed by connecting the shield cover in a state where the mudguard body is tilted, but if it does not hinder the water flow generation effect to the muddy water by the lower end part, As shown in FIG. 9, the mudguard material itself may be curved or bent around the longitudinal axis of the mudguard material from the front side to the back side.

  When the surface of the mudguard is tilted and connected to the shield cover, the mudguard material (receiving piece) can flow the mud that collides with the front surface of the mudguard material. This does not hinder the generation of water flow to the center of the work machine. In particular, when the lower end portion of the mudguard material is inclined from the lower side to the upper side from both sides of the work machine to the center side (Claim 1), when the mudguard material itself is inclined, the front surface of the lower end portion The muddy water that collided with can be taken under the lower end. As a result, the muddy water that collided with the front surface of the mudguard material can be put on the muddy water flow from below the lower end to the center of the work equipment, so that the floating material from the front of the mudguard material can be taken into the shield cover. Is easily exhibited.

  In order to connect the mudguard material having the lower end with an inclination from the upper side to the lower side from both sides in the width direction to the center side of the scraping work machine, to the front side in the traveling direction of the shield cover, the lower end part is immersed in the muddy water. It is possible to move the muddy water present in the forward direction when the scraper working machine moves forward in the traveling direction from the both sides in the width direction of the scraper working machine to the center side.

As a result, the suspended matter on the muddy water is guided to the work machine side and taken into the shield cover, so that the suspended matter is caught in the tilling rotor and embedded in the mud soil. Become. By embedding the suspended matter in the mud, the entrapment in the seedling due to the floating matter floating at the time of rice planting is eliminated, and the influence of the suspended matter on the seedling and the influence on the planting operation can be avoided.

It is the front view by the side of the tractor which showed the scraping work machine which connected two mudguards in the position near the both sides of the width direction ahead of a shield cover. (A), (b) is an arrow XX view of FIG. 1, (a) shows the state of a normal water level, (b) shows the state where the water level is rising from (a). . It is the front view by the side of the tractor which showed a mode that the mudguard material was connected to the shield cover front, when an extension work machine was connected with the work machine body. It is the side view which showed a mode that the extension working machine in the alternative working machine shown in FIG. 3 was folded and stored. It is an arrow view of the YY line of FIG. It is a cross-sectional enlarged view of the shield cover of FIG. It is the top view which showed the mode at the time of the operation | work by the alternative scraping work machine shown in FIG. It is the perspective view which showed a mode that the plowing work machine shown in FIG. 3 is working in the farm field with muddy water. (A), (b) is the elevation which showed the flow of the mud of the mudguard in the state shown in FIG. 7, and respond | corresponds to FIG. 2- (a), (b), respectively. (A), (b) is a connection example other than FIG. 5 to the shield cover of a mudguard, (a) is a longitudinal cross-sectional view when the mudguard is bent, and (b) is curved. . It is an elevational view of a mudguard whose bottom end is horizontal. (A) is an elevation view showing a production example of a mudguard material when the lower end of the receiving piece is inclined without a slit, and (b) is a plurality of lower ends with the inclination shown in (a). Elevated view showing the mudguard material when divided into receiving pieces, (c) is the lower end surface of the receiving piece with the inclination shown in (b), from below from the back side to the surface side of the mudguarding material An elevation view showing the mudguard material when tilted upward, (d) is an elevation view showing a production example of the mudguard material when the lower end of the receiving piece is tilted when there is a slit, (E) is an elevation view showing the mudguard material when the lower end surface of the receiving piece with the slant shown in (d) is slanted from bottom to top from the back side to the front side of the mudguard material. , (F) is a sectional view taken along line xx of (c), (e). (A) is an elevation view showing the surface of the mudguard material when the upward facing portion facing the inclined slit of the receiving piece is deformed to the back side, and (b) is a cross-sectional view taken along the line yy of (a). FIG. 4C is a horizontal sectional view showing a modification of FIG. (A) is a front view on the tractor side showing a scraping work machine in which two mudguards having a plurality of receiving pieces divided by slits perpendicular to the vertical direction are connected to positions on both sides in the width direction in front of the shield cover. It is a figure and (b) is a front view at the time of connecting two mudguards with a narrower slit width than (a) to a shield cover. It is the front view by the side of the tractor which showed a mode that the mudguard material shown to Fig.13 (a) was connected to the shield cover front at the time of connecting an extension working machine with the working machine main body. (A), (b) is the elevation which showed the flow of the mud of the mudguard in the state shown to Fig.13 (a), and respond | corresponds to Fig.2 (a), (b), respectively.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  1 includes a tilling rotor 6 that is mounted on the rear portion of the tractor 20 shown in FIG. 6 and that rotates around a horizontal axis by receiving power from the tractor 20 and a shield cover 2 that covers the top thereof. A scraping work machine (hereinafter referred to as a work machine) 10 having a mudguard 1 having a lower end 1f inclined downward and upward from both sides in the width direction of the work machine to the center side is connected to the front side. Details of the mudguard 1 will be described later.

  As shown in FIGS. 1 and 2, the main body 10A of the work machine 10 includes a top mast 11 connected to a three-point link hitch mechanism including a top link and a lower link at the rear portion of the tractor 20 (see FIG. 6), and a lower link connecting portion. 12 and is mounted to the rear portion of the tractor 20 through the three-point link hitch mechanism so as to be movable up and down. A gear box 13 connected to the PTO output shaft of the tractor 20 via a joint shaft having a universal joint, a transmission shaft, and the like is disposed at the lower end portion of the top mast 11, and is transmitted from the gear box 13 in the width direction of the main body 10A. A frame 14 and a support frame 15 are installed. The power from the PTO output shaft is transmitted to the PIC input shaft 13 a of the gear box 13, and the power received by the PIC input shaft 13 a is transmitted to the transmission shaft inserted through the transmission frame 14.

  A chain transmission case 16 is fixed to the distal end portion of the transmission frame 14 so as to hang down, and an end cover 17 facing the chain transmission case 16 is fixed to the distal end of the support frame 15. A rotary shaft 7 of the tilling rotor 6 is installed between the transmission case 14 and the end cover 17 so as to be rotatable about the axis. A chain is stretched between the chain transmission case 16 and the rotary shaft 7, and the power of the transmission shaft is transmitted to the rotary shaft 7 through the chain. The shield cover 2 is joined to the chain transmission case 16 and the end cover 17 at end plates 21 and 21 at both ends thereof.

  A tilling claw 8 protrudes from the outer periphery of the rotary shaft 7 at an appropriate interval in the circumferential direction, and the tilling rotor 6 is constituted by the rotary shaft 7 and the tilling claw 8. The tilling claws 8 are arranged in the axial direction of the rotary shaft 7 with an interval that does not interfere with each other. The tilling claws 8, 8 adjacent to each other in the axial direction of the rotary shaft 7 are arranged at an angle with respect to the center of the shaft, for example, and the tip of the tilling claws 8 in FIG. 2, FIG. 4 and FIG. Draw a rotation trajectory indicated by a two-dot chain line. Fig. 2- (a) shows the situation of normal water level, and Fig. 2- (b) shows the situation of higher water level than Fig. 2- (a). 8- (a) and (b) show the front of the shield cover 2 corresponding to FIGS. 2- (a) and (b).

  Under the transmission frame 14 and the support frame 15, a shield cover 2 that covers the rotation range of the tillage claw 8 and protects the main body 10 </ b> A of the work machine 10 from earth and sand is disposed. As shown in FIG. 1, the shield cover 2 is joined to lower brackets 14 a and 15 a protruding below the transmission frame 14 and the support frame 15 in a connecting member 2 a protruding from the upper surface (outer peripheral surface) thereof. Is supported by both frames 14 and 15.

  The two-dot chain line passing through the lower side of the rotary shaft 7 in FIG. 2- (a) and the two-dot chain line passing through the upper side of the rotary shaft 7 in FIG. 2- (b) indicate the level of the mud surface in the field. The level of the surface changes with changes in the depth of the mud surface. 1, 8, 13, and 15 show a case where the lower end portion 1 f of each receiving piece 1 e constituting the mudguard 1 is inclined from the lower side to the upper side from both sides to the center side of the work machine 10. An example is shown. Under the normal water level situation shown in FIG. 2- (a), the level of the muddy water surface is muddy water, as shown in FIGS. 8- (a) and 15- (a), the tip of the lower end 1f of each receiving piece 1e is muddy water. In the situation where the water level is high as shown in FIG. 2- (b), the entire inclined portion of the lower end portion 1f of each receiving piece 1e is muddy as shown in FIGS. 8- (b) and 15- (b). Soak in.

2- (a), 8- (a), and 15- (a), the mudguard 1 induces the muddy water scraped by the tilling claws 8 to the lower end 1f through the slit 1d. In addition to this, the muddy water and the suspended matter existing in front of the mudguard 1 are received and guided to the center side of the work machine 10 by the lower end 1f of the piece 1e.
2- (b), 8- (b), and 15- (b), the mudguard 1 mainly receives mud and floating matter present on the front surface of the mudguard 1 and receives the pieces 1e. The lower end portion 1f of the work machine 10 serves to guide the work machine 10 toward the center portion side, but as shown in FIGS. 2- (a), 8- (a), and 15- (a), the lower end portion of the receiving piece 1e. The direction in which the entire inclined portion of the lower end portion 1f is immersed in the muddy water has a stronger function of inducing muddy water to the center side of the work implement 10 than the extent that the tip of 1f is slightly immersed.

  As shown in FIG. 2- (a), the floating material easily enters the shield cover 2 under the condition that there is a gap between the lower end 1f of the receiving piece 1e and the water surface. However, the mudguard 1 has a plurality of slits 1d. Since each receiving piece 1e is easily bent and deformed by being separated into the receiving pieces 1e, the effect of taking the floating substance into the shield cover 2 is maintained even under the situation shown in FIG. . Since the receiving piece 1e can be restored immediately even when it is elastically deformed due to resistance from a suspended matter or the like, it does not affect the effect of inducing muddy water.

  3 and 4 show a state in which the mudguard 1 is connected to the main body 10A and the extension work machine 30 when the extension work machine 30 is foldably connected to both sides in the width direction of the main body 10A. 3 shows a state in which the extension work machine 30 is deployed, and FIG. 4 shows a state in which the extension work machine 30 is stored.

  As shown in FIG. 4, the extension work machine 30 has a tilling rotor 34 that rotates simultaneously with the tilling rotor 6 when deployed, a shield cover 31 that covers the top, and end plates 32 that are positioned on both sides of the shield cover 31 in the width direction. The plate 32 is connected to the end plate 21 of the main body 10A in a state where the plate 32 can be unfolded and folded. For example, as shown in FIG. 4, the extension work machine 30 is connected to the main body 10 </ b> A so as to be rotatable around an axis inclined in the vertical direction with respect to the traveling direction. The tilling rotor 34 of the extension work machine 30 receives power from the tilling rotor 6 by being connected to the rotary shaft 7 of the tilling rotor 6 of the main body 10A via a clutch during deployment.

  The extension work machine 30 is connected by a pin 23 or the like to a bracket 22 protruding from the upper side of the end plate 21 in the main body 10A at a position closer to the rear side of the end plate 32 in the bracket 33 protruding from the upper side of the end plate 32. As a result, it is connected in a state where it can be expanded and retracted. The extended state and the retracted state of the extension work machine 30 are restrained by the restraining device 35 that holds the respective states. FIG. 6 shows the working state of the work machine 10 in the expanded state of the extension work machine 30.

  As shown in FIG. 6, a leveling plate 40 for leveling the mud surface of the farm is connected to the rear of the main body 10 </ b> A, but is connected to the leveling plate 40 of the main body 10 </ b> A in its unfolded state behind the extension work machine 30. The resulting leveling plate 41 is connected. In FIG. 6, an auxiliary leveling plate 42 is connected to the outside of the leveling plate 41 of the extension work machine 30 in the direction of the width of the work machine 10 to push muddy water and dredged material existing behind the work machine 10 toward the center in the width direction. doing.

  As shown in FIGS. 1 and 2, the mudguard 1 is attached to the shield cover 2 in a suspended state by being connected to the mounting plate 3 facing the front side in the traveling direction of the shield cover 2, specifically, the front side. Installed. The shield cover 2 has a cross-sectional shape surrounding the tilling rotor 6, a front part located near the front of the tilling rotor 6, an intermediate part located above the tilling rotor 6, and a rear located near the rear of the tilling rotor 6. Divided into parts.

  In the drawing, as shown in FIG. 5, which is an enlarged view of FIG. 2, a drooping portion 2b is formed at the front end position of the front portion, and a mounting plate 3 is detachably disposed with respect to the drooping portion 2b. Together with the material 1, the mudguard 1 can be cleaned and replaced by detachably connecting to the hanging portion 2 b by a fastener 4 such as a bolt or a pin. An insertion hole is formed in a portion through which the hanging portion 2b, the mounting plate 3, and the fastener 4 of the mudguard 1 pass. In FIG. 10 etc., the insertion hole of the mudguard 1 is shown by 1b.

  The mudguard 1 may be directly joined by the fastener 4 in contact with the surface of the mounting plate 3, but in the drawing, the binding force of the mudguard 1 by the fastener 4 acts equally on the entire length of the mudguard 1. Thus, a presser material 5 made of a flat bar or the like having a length equivalent to that of the mudguard material 1 (connection portion thereof) is interposed between the fastening material 4 on the surface side of the mudguard material 1. The mudguard 1 is also connected to the shield cover 31 of the extension work machine 30 via the attachment plate 3 or by the fastener 4 via the attachment plate 3 and the pressing member 5. In this case, an insertion hole through which the fastener 4 is inserted is also formed in the pressing member 5.

  In the drawing, in particular, the mounting plate 3 is formed in an L-shaped cross-sectional shape, so that the mudguard 1 overlaps with the hanging portion 2b of the shield cover 2 and receives the supporting portion 3a in a state where the mudguard 1 overlaps with the supporting portion 3a. It is composed of two parts of the contact part 3b that is bent and the tip contacts (contacts) the surface of the front part of the shield cover 2, and when the mudguard 1 is connected to the shield cover 2, the mudguard 1 is placed on the vertical surface. The shield cover 2 is connected to the shield cover 2 at a fixed angle.

  FIG. 5 shows a state in which the working machine 10 is inclined from the front side to the rear side in the traveling direction from the upper side to the lower side so that the muddy water received by the surface (front surface) of the mudguard 1 can be guided downward. The state where the mudguard 1 is connected is shown. Guiding the mud water received by the surface of the mudguard 1 is to bend the mudguard 1 itself from the front side to the back side as shown in FIG. 9- (a), or as shown in FIG. 9- (b). It is also possible to bend it.

  9- (a) and (b), the lower part in the height direction of the mudguard 2 is bent or curved from the surface side to the rear side, so that the mud received on the surface of the mudguard 1 is forward in the traveling direction. Without being pushed out, it is possible to guide to the rear side. When the lower part of the mudguard 1 is curved as shown in FIG. 9- (b), the speed of the mud water contacting the surface of the mudguard 1 is higher than that of the planar shape shown in FIG. 9- (a). Since it decreases as it goes backward, it is considered that the backward guiding effect is high. In the case of FIG. 9- (b), the effect of taking in floating matter existing in front of the mudguard 1 to the back side (inside the shield cover 2) of the mudguard 1 is also high.

  The mudguard 1 is an enlarged view of both sides of the work machine 10 in FIG. 1 in the width direction, and is basically connected to a hanging portion 2b located on the front side of the shield cover 2 as shown in FIGS. It is divided in the height direction (width direction) into the part 1a and the mud receiving part 1c which continues to the connection part 1a and hangs downward. The connecting portion 1a is formed with an insertion hole 1b through which the fastener 4 is inserted for connection to the hanging portion 2b of the shield cover 2.

  The mud receiving portion 1c is divided into a plurality of receiving pieces 1e by slits 1d inserted in the height direction (width direction) from the lower end. The slit 1d does not need to be linear, and may be formed in a curved shape.

  The mudguard 1 may be disposed over the entire length of the shield cover 2, but the mud water existing in front of the shield cover 2 is shielded while retaining the mud and mud scraped by the tiller rotor 6 inside the shield cover 2. 2, it is not always necessary to be disposed in the entire length, as long as it can be guided into the interior of the shield cover 2.

11- (a) and (b) are “having a lower end portion 1f inclined from the lower side to the upper side from both sides in the width direction of the work machine 10 to the central side, and the lower end portion is immersed in muddy water. The basic form of the mudguard 1 having the requirement of “moving the muddy water present in the forward direction from both sides in the width direction of the work machine 10 to the center side” while the work machine 10 moves forward in the traveling direction is shown. .
In FIG. 11- (d), the mudguard 1 is provided with slits 1d having an inclination from the upper side to the lower side, from the both sides in the width direction to the center side, from the lower end to the height direction. Although it is divided into a plurality of receiving pieces 1e in the lengthwise direction with respect to each other, it may be divided into a plurality of receiving pieces 1e without a slit 1d.

  The thickness of the plate-shaped mudguard 1 itself varies depending on the function (performance) required for the mudguard 1, and depends on the material (material) for exhibiting the bending rigidity corresponding to the function. In the case of resin or rubber, it is about 1.5 to 2.5 mm.

  FIG. 7 shows a state where the working machine 10 in which the mudguard 1 is connected to the hanging part 2b in front of the shield cover 2 is actually working in the field where mud is stored on the mud.

1, 8, 13, and 15, “the lower end 1 f of each receiving piece 1 e is inclined from the lower side to the upper side from both sides in the width direction of the work machine 10 to the center side. In addition to the requirement of ", the form of the mudguard 1 having a slit 1d from the top to the bottom is shown. When the lower end portion 1f of the receiving piece 1e is inclined as described above, there is a gap between the lower end portion 1f of the receiving piece 1e and the muddy water surface as shown in FIGS. 8 (a) and 15- (a). Under certain water level conditions, floating material such as rice plants that collided with the lower end 1f of the receiving piece 1e will flow into the center of the work implement 10 having a large distance from the muddy water surface to the lower end 1f of the receiving piece 1e. Therefore, the effect of guiding the floating material to the center side of the work machine 10 is expected.
The same effect as described above is also expected at the lower end portion 1f of the mudguard 1 whose length direction is not divided into a plurality of receiving pieces 1e. In addition, the mudguard 1 divided into the plurality of receiving pieces 1e has a larger number of opening portions, and it is easier to take in suspended matter into the shield covers 2 and 31.

In a situation where the level of the muddy water surface is at the level of the center in the width direction of the lower end portion 1f of each receiving piece 1e as shown in FIGS. 8- (b) and 15- (b), the lower end portion 1f of the receiving piece 1e. Since the muddy water is immersed (contacted) in the muddy water surface, the muddy water is guided from the both sides in the width direction of the work machine 10 to the center side, so that a water flow is generated directly to the muddy water existing in front of the mudguard 1. Expected to be effective.
The same effect as described above is also expected at the lower end portion 1f of the mudguard 1 whose length direction is not divided into a plurality of receiving pieces 1e.

  When the working machine 10 in which the mudguard 1 is mounted on the shield covers 2 and 31 of the main body 10A and the extension work machine 30 in the state shown in FIG. 3 is actually operated at a speed of about 0.7 m to 1.4 m / sec. (FIG. 7), due to the effect of pushing away mud water by the mudguard material 1, the mud that exists in front of the mudguard material 1 flows toward the center in the width direction of the shield cover 2 and exists in front of the mudguard material 1. It is confirmed that the muddy water to be guided is guided to the width direction center portion side of the shield cover 2.

  As described above, the mudguard 1 is divided into the connection portion 1a and the mud receiving portion 1c in the height direction, and is divided into a plurality of receiving pieces 1e by the plurality of slits 1d in the width direction (length direction). The FIG. 15 shows an example of a basic mudguard 1 having a slit 1d from the top to the bottom. In FIG. 8, the work machine 10 goes from both sides in the width direction to the center side from the top to the bottom. The mudguard 1 having an inclined slit 1d with an inclination is shown as viewed from the front side (front side in the direction of travel), and the mudguard 1 connected to the right side toward the front in the direction of travel of the shield cover 2 is shown. Show. Accordingly, in the elevation view, the left side is closer to the width direction end of the work machine 10, and the right side is closer to the center.

  In addition, the inclined slit 1d shown in FIG. 8 exists in front of the work machine 10 by sending muddy water closer to the center of the work machine 10 when the muddy water descending along the back surface of the mudguard 1 flows down through the inclined slit 1d. It is possible to generate a flow from the both sides in the width direction of the work machine 10 toward the center part on the surface of the muddy water to be generated, and the effect of guiding the suspended matter on the muddy water to the center part side of the work machine 10 can be further expected.

  As shown in FIGS. 11- (a) and 11 (b), the basic mudguard 1 is only required to incline the lower end 1f of each receiving piece 1e with respect to the horizontal, so that FIG. 1, FIG. 8, FIG. -It is not always necessary to have the slit 1d from the top to the bottom as in (a) and (b).

  8A, 8B, 15A, and 15B, the lower end portion of the receiving piece 1e divided into a plurality is arranged from the both sides in the width direction of the work machine 10 to the central portion. By tilting upward toward the side, the distance between the lower end portion of the receiving piece 1e and the muddy water surface is increased on the center side of the work implement 10 together with the fact that both side portions thereof are formed in a curved shape. I have to. As a result, the floating substance existing on the front side of the mudguard 1 is easily taken into the shield cover 2 on the center side of the work machine 10 in each receiving piece 1e unit. When the lower end of the receiving piece 1e is immersed in muddy water as shown in FIGS. 8B and 15B, a water flow toward the center of the work machine 10 is generated in the muddy water near the water surface. It is easy.

  Fig.11 (a) has shown the manufacture example of the mudguard material 1 provided with the requirement that the lower end part 1f inclines. The arrow in FIG. 11- (a) indicates that the muddy water present in front of the mudguard 1 collides with the lower end 1f of the mudguard 1, so that the resistance is increased from both sides in the width direction of the work implement 10 and the central part side with the lower resistance. A state is shown in which a water flow that moves to the center is generated, and muddy water flows toward the center in the width direction of the work machine 10. In addition to being attached in a straight line, the inclination may be attached in a curved line or a combination of a straight line and a curved line.

  FIG. 11- (b) shows a manufacturing example of the mudguard 1 having the requirement that the lower end 1f of each receiving piece 1e is inclined. The arrow in FIG. 11- (b) indicates that the muddy water present in front of the mudguard 1 collides with the lower end 1f of the mudguard 1, so that the resistance is increased from both sides in the width direction of the work machine 10 and the central part side with the lower resistance. A state is shown in which a water flow that moves to the center is generated, and muddy water flows toward the center in the width direction of the work machine 10. The lower end surface of the receiving piece 1e does not need to be a flat surface, and may be a curved surface. Further, in addition to the case where the inclination is given in a straight line, the inclination may be given in a curved line or a combination of a straight line and a curved line.

  11- (d) shows the requirement that the lower end portion 1f of each receiving piece 1e is inclined and the manufacture example of the mudguard material 1 provided with the slit 1d, as in FIGS. The arrow in FIG. 11- (d) indicates that the muddy water present in front of the mudguard 1 collides with the lower end 1f of the mudguard 1, so that the resistance is increased from both sides in the width direction of the work machine 10 to the central part side where the resistance is small. A state is shown in which a water flow that moves to the center is generated, and muddy water flows toward the center in the width direction of the work machine 10. The lower end surface of the receiving piece 1e does not need to be a flat surface, and may be a curved surface. Further, in addition to the case where the inclination is given in a straight line, the inclination may be given in a curved line or a combination of a straight line and a curved line.

  11- (c) and (e) are cross-sectional views taken along the line xx, as shown in FIG. 11- (f), the mudguard 1 is placed on the inclined lower end surface 1f of each receiving piece 1e of the mudguard 1. Of the receiving piece 1e in the case of obtaining the effect of guiding the muddy water colliding with the lower end surface of the mudguard 1 to the center side of the work implement 10 by attaching the slope from the lower side to the upper side toward the upper side. An example of formation will be shown. In this case, if the lower end portion (lower end surface) of the receiving piece 1e is formed in a cylindrical surface that is concave or convex downward, or an elliptically curved surface that gradually changes in curvature, the working machine 10 The effect of generating a water flow toward the center side of is increased.

FIG. 12 shows that “the surface of each receiving piece 1e divided into a plurality of portions across the slit 1d is inclined from the front side to the rear side from the both sides in the width direction of the work machine 10 to the center side”. The example of manufacture of the mudguard material 1 with the requirements and the requirement that "the lower end part 1f is inclined" as shown in FIG. 11 is shown. FIG. 12- (b) shows a cross section taken along line yy of FIG. 12- (a). FIG. 12- (c) is a modified example of FIG. 12- (b), in which the upward surface in the vicinity of the lower end of the inclined slit 1d is positioned on the rear surface (back surface) side of the mudguard relative to the downward surface. Indicates.
In some cases, the surface of each receiving piece 1e divided into a plurality without the slit 1d is inclined from the front side to the rear side from the both sides in the width direction of the work machine 10 to the center side.

In the case of FIG. 12, the surface of the receiving piece 1e is inclined by twisting the portion of the receiving piece 1e closer to the center of the work machine 10 toward the back side. In this case, as shown by the arrows, the muddy water present in front of the mudguard 1 is pushed to the surface of the receiving piece 1e, and is guided to the back side of the mudguard 1 from the slit 1d by the inclination of the surface. It will flow toward the center in the width direction. In this case, the surface of the receiving piece 1e does not need to be a flat surface, and may be a curved surface.

DESCRIPTION OF SYMBOLS 1 ... Mudguard, 1a ... Connection part, 1b ... Insertion hole, 1c ... Mud receiving part, 1d ... Slit, 1e ... Receiving piece, 1f ... Lower end part 2 ... Shield cover, 2a ... Connecting material, 21 ... end plate, 22 ... bracket, 23 ... pin, 2b ... hanging part,
3 ... Mounting plate, 4 ... Fastener, 5 ... Holding material,
6 ... Tillage rotor, 7 ... Rotary shaft, 8 ... Nail,
10: Scraping work machine, 10A: Main body, 11: Top mast, 12: Lower link connecting part, 13: Gear box, 13a: Input shaft,
14: Transmission frame, 14a: Lower bracket, 14b: Upper bracket,
15: Support frame, 15a: Lower bracket, 15b: Upper bracket,
16 …… Chain transmission case, 17 …… End cover,
20 …… Tractor,
30 ... Extension work machine, 31 ... Shield cover, 32 ... End plate, 33 ... Bracket, 34 ... Tillage rotor, 35 ... Restraint device.

Claims (7)

In the scraper working machine equipped with a tilling rotor mounted on the rear part of the tractor and rotating around a horizontal axis under the power from the tractor and a shield cover covering the top thereof,
The chamfering machine has a lower end inclined from the lower side to the upper side from both sides in the width direction to the center side, and the lower end portion is immersed in muddy water, and the chamfering machine moves forward in the traveling direction. A scraping work machine, characterized in that a mudguard that moves mud water that is sometimes present in the forward direction from both sides in the width direction of the skimming work machine to the center side is connected to the front side in the traveling direction of the shield cover. The mudguard has a plurality of receiving pieces divided in the length direction,
2. The scraping work machine according to claim 1, wherein the inclination is provided at a lower end portion of some or all of the plurality of receiving pieces.   The surface of the lower end portion of the mudguard is provided with an inclination from the front to the rear from both sides in the width direction to the center of the scraping work machine. The listed scratching machine.   The said mudguard material is connected to the said shield cover in the state which inclined from the front side to the back side of the advancing direction of the said scraping work machine from the upper direction to the downward direction. The scraping work machine as described in one. Attached to the rear part of the tractor, connected to the shield cover of the scraper working machine comprising a tilling rotor that rotates around a horizontal axis in response to power from the tractor and a shield cover that covers the top thereof,
The scraping work machine has a lower end portion inclined from the lower side to the upper side in the length direction from one side to the other side, and the lower end portion is immersed in the muddy water toward the front side in the traveling direction of the scraping work machine. A mudguard for a skimming work machine, wherein mud water existing forward is moved from one side to the other side in the length direction of the skiving work machine. The mudguard material for the skimming machine has a plurality of receiving pieces divided in the length direction,
The said slope is provided in the lower end part of some or all of these receiving pieces, The mudguard material for scraping work machines of Claim 5 characterized by the above-mentioned.   The surface of the lower end portion of the mudguard material for the scraping work machine is provided with an inclination from the front side to the rear side of the scraping work machine from one side in the length direction to the other side. The mudguard material for scraping work machines as described in 6.

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