JP4015987B2 - Leveling machine - Google Patents

Description

  The present invention relates to a leveling machine used for leveling work in a farm scene, for example.

  As this kind of leveling machine, for example, the inside and outside of this bucket are communicated with a box-shaped bucket that can be attached to the front or rear attachment portion of the tractor (generally, the lifting attachment portion at the rear of the tractor). In general, an inflow portion is provided, and a soil introduction plate (plow plate) is attached to the inflow portion in a front-down manner (see, for example, Patent Documents 1 and 2).

  According to such a leveling machine, by holding the soil introduction plate in the forwardly lowered state and traveling the tractor forward, for example, the soil at a high place in the agricultural scene is scraped off by the soil introduction plate, and the inside of the bucket is The tractor can be moved to move to a low place in the farm field, and the soil in the scraped bucket can be discharged to a low place in the farm scene for leveling.

  It is also possible to store soil, snow, harvested products, agricultural implements, etc. in the bucket and transport the vehicle by running a tractor.

Japanese Utility Model Publication No.57-41259 Japanese Patent Laid-Open No. 9-235749

  By the way, conventionally, when the soil that has flowed into the bucket is transported to a low place in the field, or when this bucket is used for the purpose of transportation, the inflow section is formed so that the transported material is not discharged from the inflow section. Was covered with a suitable board.

  However, the work of closing or opening the inlet is troublesome because the tractor driver must get off and manually do so, especially during leveling work, repeatedly cutting and transporting repeatedly. In such a case, it was very troublesome.

  The present invention finds such a problem and solves it by a simple improvement. By adopting a structure in which the soil introduction body functions as a lid for closing the inlet portion, a plate material for closing is separately provided. It is not necessary to carry it to the site and use it, and the soil introduction body can be switched between the closed state and the cutting state with a simple operation. An elastic holding mechanism, for example, by simply lowering the lifting attachment and lowering the soil introduction body projecting downward without contacting the running body and abutting against the ground projections or projections on the ground and rotating within a predetermined range It is an object of the present invention to provide a ground leveling machine that automatically returns the soil introduction body to the closed state by the urging force.

  The gist of the present invention will be described with reference to the accompanying drawings.

It is a leveling machine attached to the traveling body 1, and is provided with a bucket body 4 on a lifting attachment part 2 provided to be driven to move up and down by operation on the traveling body 1 or an attachment base 3 attached to the lifting attachment part 2. The bucket body 4 is configured to be movable up and down with respect to the traveling body 1, and the inlet portion 5 is formed in the standing wall portion 40 provided at the base end portion of the bucket body 4. The shaft 24 of the base portion of the soil introduction body 7 is pivotally attached to the lower part of 5, and the traveling body 1 travels as the traveling body 1 travels by projecting downward from the inlet 5 to the bucket body 4. A soil introduction body 7 for cutting the surface of the running soil surface 6 and allowing the cut soil 6A to flow into the bucket body 4 from the inflow port portion 5 is provided at the inflow port portion 5 so as to be rotatable up and down. The body 7 is activated and rotated to stand upright substantially parallel to the standing wall 40. It is configured to block the entire inlet port portion 5 or a predetermined range and prevent the cut soil 6A once flowing into the bucket body 4 from being discharged from the inlet portion 5. Elasticity connected to the bucket body 4 and biasing and holding the soil introduction body 7 protruding from the inlet portion 5 to the lower side of the bucket body 4 and holding and biasing the closed state of the inlet portion 5. An elastic holding mechanism 8 having a body 8A is provided. The elastic holding mechanism 8 connects one end of the elastic body 8A to the soil introduction body 7 and has the other end as a lower surface of the bucket body 4 and a base end of the bucket body 4 The earth introduction body 7 is connected to the position on the tip side of the bucket body 4 rather than the lower edge position of the inlet portion 5 of the standing wall section 40 of the section, and the soil introduction body 7 is substantially parallel to the bottom plate portion 4A of the bucket body 4. The front and back of the soil introduction body 7 are the front and back of the bottom plate portion 4A of the bucket body 4 In the horizontal state that is substantially flush with the surface, the positions of the one end portion and the other end portion of the elastic portion 8A and the shaft 24 of the base end of the soil introduction body 7 are substantially on the same straight line when viewed from the side. The soil introduction body 7 configured and configured to be held and urged in the soil cutting state is rotated upward from a substantially horizontal state substantially parallel to the bottom plate portion 4A of the bucket body 4 to be in the closed state. The soil removal body 7 is rotated by rotating the soil introduction body 7 that generates a biasing force and that is held in the closed state downward from a substantially horizontal state substantially parallel to the bottom plate portion 4A of the bucket body 4. The soil introduction body 7 that is configured to generate a biasing force that pivots and biases in a state to be in a state, and that is held and biased in the soil cutting state is positioned above the protrusion on the ground or the protrusion on the ground. abutted to be in is rotated upward, the bottom plate portion 4A and substantially parallel to the soil introducer 7 the bucket body 4 from When allowed to rotate to a state which is inclined from the substantially horizontal state upwardly, the by biasing force generated urging force to the urging force of the elastic member 8A of the elastic holding mechanism 8 is rotationally biased in a direction which becomes the closing state The present invention relates to a leveling machine characterized in that the soil introduction body 7 is configured to rotate back to the closed state.

  Further, a base portion of the soil introduction body 7 is pivotally attached to the lower portion of the inlet portion 5, and the soil introduction body 7 is activated and rotated so as to be substantially flush with the standing wall portion 40. By doing so, the predetermined range of the inlet portion 5 is closed, and the ground 6A once flowing into the bucket body 4 can be prevented from being discharged from the inlet portion 5. The present invention relates to a leveling machine according to claim 1.

  Since the present invention is configured as described above, the soil introduction body can be switched between the closed state and the cutting state by a simple operation, and the soil introduction body can be simply turned to be in a standing state. Since the inlet can be closed by the introduction body and this closed state is held by the elastic holding mechanism, a plate for closing the inlet is not required as in the conventional example, and the plate is not used. There is no need to carry it to the site or to remove it according to the work, and in particular, when the soil introduction body is switched from the soiled state to the closed state, for example, the driver of the traveling body simply lowers the lifting attachment. The soil introduction body is automatically closed by the urging force of the elastic holding mechanism simply by bringing the soil introduction body that protrudes downward into contact with the projections on the ground and the projections on the ground and rotating them within a predetermined range. The driver will drive as before Even if you do not have to get off the board and install a plate, you can easily do it while riding on the traveling body. In addition, this soil introduction body switching structure is simply a soil introduction body compared to the structure of the conventional product Is provided at the inlet portion so as to be able to turn up and down, and the soil inlet body and the bucket body or the inlet portion are urged to hold and bias the soil introduction body in a ground state and a closed state, and in a ground state or a closed state. Since it can be configured only by providing an elastic holding mechanism that generates a biasing force that rotates and biases the soil introduction body that is held and biased in a state to a closed state or a cutting state by rotating it within a predetermined range. It is an innovative ground leveling machine with excellent workability and practicality, such as simple design and realization without complicated structure, and high productivity.

  Further, in the invention described in claim 2, the structure in which the soil introduction body closes the inlet portion can be easily designed and realized, and the soil introduction body is configured to close a predetermined range of the inlet portion. Therefore, the ground leveling machine has a more excellent practicality. For example, a small soil introduction body can be adopted as compared with the opening range (area) of the inlet portion, and the construction can be made at a low cost.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode of the present invention considered to be suitable (how best to carry out the invention) will be briefly described with reference to the drawings showing the effects of the present invention.

  The soil introduction body 7 is erected in parallel with the inflow portion 5 by a ground state in which the elastic body 8A of the elastic holding mechanism 8 projects from the inflow portion 5 to the lower side of the bucket body 4 and the inflow portion 5 Energized and held in the closed state in which all or a predetermined range is closed.

  In addition, when the soil introduction body 7 is rotated upward by a predetermined range against the holding biasing force of the elastic holding mechanism 8 from the soil cutting state, the biasing force of the elastic holding mechanism 8 is rotated in the direction of the closed state. Since the urging force is urged, the soil introduction body 7 is automatically rotated to the closed state without applying any force, and conversely, the holding urging force of the elastic holding mechanism 8 is changed from the closed state. When the soil introduction body 7 is rotated downward by a predetermined range, the urging force of the elastic holding mechanism 8 becomes a urging force that urges the squeezing state in the direction of the soil cutting state, so no force is applied thereafter. In both cases, the soil introduction body 7 is automatically rotated to the ground state.

  Therefore, the switching operation between the soil removal state and the blockage state of the soil introduction body 7 does not operate the soil introduction body 7 in the entire rotation range from the soil removal state to the blockage state or from the blockage state to the soil removal state. In both cases, the operation is easily performed because the operation is automatically performed only by rotating the predetermined range.

  For example, when the bucket body 4 is provided on the lifting attachment portion 2 of the traveling body 1 such as a tractor or the attachment base 3 attached to the lifting attachment portion 2, the soil is introduced into the bucket body 4 while traveling the traveling body 1. It can be used as a leveling machine that removes soil elsewhere, leveling the soil (or other soil-like material) like a power shovel, or leveling it, and can be used as a large snow removal tool in winter.

  The case where it uses as a leveling machine is demonstrated concretely.

  When the soil introduction body 7 projects from the inlet portion 5 to the lower side of the bucket body 4, the cutting state that projects downward from the bucket body 4 is held and urged by the elastic holding mechanism 8. However, when the traveling body 1 travels on the traveling soil surface 6, the soil introduction body 7 cuts the surface of the traveling soil surface 6 as the traveling body 1 travels, and the cut soil 6 </ b> A serves as the inlet portion 5. It will flow into the bucket body 4 more.

  For example, when the cutting soil 6A that has flowed into the bucket body 4 is moved to a lower position on the soil surface 6 by traveling the traveling body 1, the soil introduction body 7 that is held and urged in the soil cutting state is used. When the predetermined range is turned upward, the urging force of the elastic holding mechanism 8 is turned in the direction in which the soil introduction body 7 is erected substantially parallel to the standing wall portion 40 of the bucket body 4 contrary to the above. The elastic holding mechanism 8 holds and urges the soil introduction body 7 in a closed state that closes all or a predetermined range of the inlet portion 5, and discharges from the inlet portion 5. The soil will be prevented.

  Therefore, as in the prior art, a plate for closing the inlet portion is not necessary, and the inlet portion 5 can be closed simply by turning the soil introduction body 7 to stand upright. Since this closed state is held and urged by the elastic holding mechanism 8, there is no need to carry the closing plate to the site or to remove it in accordance with the work, and it becomes very practical. .

  Moreover, as shown in FIGS. 6 and 7, for example, as shown in FIGS. 6 and 7, the driver of the traveling body 1 performs the switching operation from the soil removal state to the blockage state of the soil introduction body 7 performed when shifting from the soil removal work to the transport work. By simply lowering the lifting attachment 2, the soil introduction body 7 that protrudes downward is brought into contact with the protrusion on the ground and the protrusion on the ground and is rotated more than a predetermined range. In addition, since the soil introduction body 7 automatically returns to the closed state due to the urging force of the elastic holding mechanism 8, the traveling body does not have to be mounted by the driver descending from the traveling body 1 as in the prior art. The above-described switching operation can be performed while the user is on board 1, and the workability is extremely excellent and convenient.

  Further, for example, a base portion of the soil introduction body 7 is pivotally attached to the lower portion of the inlet portion 5, and the soil introduction body 7 is activated and rotated so as to be substantially flush with the standing wall portion 40. If it is configured to be able to prevent the ground 6A once flowing into the bucket body 4 from being discharged from the inlet portion 5 by closing the predetermined range of the inlet portion 5 by standing, The structure in which the introduction body 7 closes the inflow port portion 5 can be easily designed and realized, and the soil introduction body 7 has a structure in which a predetermined range of the inflow port portion 5 is closed. Compared to the case where the soil introduction body 7 is closed, the soil introduction body 7 can be downsized and can be configured at a low cost.

  Further, the elasticity of the elastic holding mechanism 8 can be obtained by rotating the soil introduction body 7 held and urged in the soil cutting state to a substantially horizontal state or to a state inclined upward from the horizontal state. The urging force of the body 8A is configured to generate a urging force that urges the soil introduction body 7 to turn in the closed state, and the soil introduction body 7 that is held and urged in the closed state. A direction in which the urging force of the elastic body 8A of the elastic holding mechanism 8 causes the soil introduction body 7 to be in the cutting state by rotating to a substantially horizontal state or to a state inclined downward from the horizontal state. If it is configured so as to generate a biasing force that pivots to the right, for example, a malfunction in which the soil introduction body 7 in the cut-off state is automatically rotated to the closed state only by rotating slightly upward is prevented. Surely exerts the above-mentioned action and effect. It will be.

  Specific embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the bucket body 4 of the present embodiment is configured in a box shape in which a standing wall portion 40 is erected around the bottom plate portion 4 </ b> A and an upper portion is opened.

  More specifically, a back plate portion 40A as a standing wall portion 40 is erected at the base end portion of the bottom plate portion 4A, and a left and right side plate portion 40B as a standing wall portion 40 is erected at the left and right ends of the bottom plate portion 4A. In addition, a front plate portion 40C as the standing wall portion 40 is provided in a standing state on the distal end side of the bottom plate portion 4A. Further, the front plate portion 4A is provided so as to be detachable, and when the cut soil 6A flows into the bucket body 4 from an inlet portion 5 described later, or when an appropriate transported article is stored and transported to an appropriate place, The front plate portion 40C closes the front end side of the bucket body 4 and can prevent dirt or the like from being discharged from the front end side. When the bucket body 4 is used like a power shovel or a snowplow, By removing the front plate portion 40C, the back plate portion 40A and the left and right side plate portions 40B can support a transported material such as snow and soil introduced from the open introduction portion on the front end side onto the bottom plate portion 4A. .

  In addition, the bucket body 4 is provided with an introductory inclined guide plate 20 having a predetermined protruding length in the left and right direction at the front end portion, and further, the bucket body 4 in a plurality of front and rear directions from the bottom plate portion 4A on the back side of the bucket body 4 to the back plate portion 40A. A plate-shaped reinforcing body 19A is provided so that the reinforcing body 19A becomes the grounding portion 19.

  In the present embodiment, the inflow port portion 5 for allowing the cut soil 6A to flow is formed in the standing wall portion 40 provided in the bucket body 4.

  Specifically, as shown in FIGS. 1 and 2, a substantially rectangular opening window is formed in a substantially intermediate portion in the left-right direction below the middle of the back plate portion 40A. The window is the inflow port portion 5.

  Further, the surface of the traveling soil surface 6 on which the traveling body 1 travels as the traveling body 1 travels is cut by projecting from the inflow section 5 to the lower side of the bucket body 4 at the inflow port portion 5. Then, a soil introduction body 7 for allowing the cut soil 6A to flow into the bucket body 4 from the inlet portion 5 is provided so as to be able to swing up and down, and the soil introduction body 7 is rotated by starting and rotating. By being set up substantially in parallel, the predetermined range of the inflow port portion 5 is closed, and the ground 6A once flowing into the bucket body 4 can be prevented from being discharged from the inflow port portion 5. ing.

  Specifically, the base end portion of the plate-like soil introduction body 7 is pivotally attached to the vicinity of the lower opening edge of the inflow port portion 5 (the shaft 24 is fixed), and the soil introduction body is provided with this pivot attachment portion as a fulcrum. 7 is configured to be freely rotatable up and down.

  More specifically, the soil introduction body 7 is formed in a squirrel plate shape whose tip side is slightly tapered, and a pivotally mounted bearing plate 7A is projected from the base end portion of the soil introduction body 7 in a left-right opposed state. Yes.

  Further, a pair of left and right support plates 25 project rearwardly at the rear end edge of the bottom plate portion 4A of the bucket body 4 that is erected on the lower opening edge of the inflow port portion 5, Each bearing plate 7A of the soil introduction body 7 is superposed, and a bolt 24 as a shaft 24 is fastened to each superposition portion, so that the soil introduction body 7 is provided at the inflow port portion 5 so as to be rotatable up and down.

  Further, the soil introduction body 7 is provided with a rotation restricting structure for restricting the undulating rotation range of the soil introduction body 7.

  Specifically, as shown in FIG. 2, upper limit stopper pieces 7B that rise upward are formed at the left and right edges of the base end side of the soil introduction body 7, and the lower limit stopper pieces are formed at the base end portion of the bearing plate 7A. 7C is formed.

  When the soil introduction body 7 is activated and rotated upward, the upper limit stopper piece 7B comes into contact with the lower opening edge of the inflow port portion 5 so that the soil introduction body 7 can be activated and rotated further. When the soil introduction body 7 is pivoted downward (see FIG. 4), the lower limit stopper piece 7C comes into contact with the lower edge of the opposing support plate 25 so that the soil can be further removed. The introduction body 7 is configured to be prevented from pivoting (see FIGS. 3 and 4).

  More specifically, at the upper limit of activation by the upper limit stopper piece 7B, the soil introduction body 7 is in a closed state in which the predetermined range of the inlet portion 5 is closed by standing upright with the back plate portion 40A (see FIG. 1), and the lower limit of the lowering by the lower limit stopper piece 7C, the soil introduction body 7 protrudes downward from the bottom plate portion 4A of the bucket body 4, and the tip portion is slightly behind the bucket body 4 from the vertical state (see FIG. The traveling ground surface where the traveling body 1 is traveling as the traveling body 1 travels as the traveling body 1 travels in an inclined state (see FIG. 4 and FIG. 5) located on the back plate portion 40 </ b> A side). 6, that is, in a state where the soil introduction body 7 is cutting the soil surface 6, the soil introduction body 7 is moved upward by the pressure of the soil pressed from the surface side of the soil introduction body 7. Constructed to be in a state of cutting that protrudes downward at an oblique angle that does not start to is doing.

  In addition, the soil introduction body 7 in the drawing does not have a shape that closes the entire inlet portion 5, but has a size that closes a wide area with a slight gap left between the upper side portion and the left and right side portions of the inlet portion 5. Adopted. In the case of the soil introduction body 7 of the size shown in the figure, the ground 6A that has flowed into the bucket body 4 once flows from the inlet 5 although the ground 6A may slightly leak from the inlet 5. It has been found that it can be sufficiently prevented from being discharged. Of course, the soil introduction body 7 may be configured to block the entire range of the inlet portion 5, but the configuration of the present embodiment can be configured at a lower cost because the soil introduction body 7 can be made smaller.

  In the present embodiment, the soil introduction body 7 is connected to the bucket body 4 or the inlet portion 5, and the soil introduction body 7 projects from the inlet portion 5 to the lower side of the bucket body 4. An elastic holding mechanism 8 having an elastic body 8A for holding and urging the closed state of the inflow port portion 5 is provided and the urging force of the elastic holding mechanism 8 is held and held in the cutting state. When the energized soil introduction body 7 is rotated upward by a predetermined range, the earth introduction body 7 is turned downward and the soil introduction body 7 held in the occlusion state is turned downward. When it is rotated within a predetermined range, it is configured to turn to an urging force that urges to rotate in the direction of the cutting state.

  Specifically, as shown in FIG. 4, a connecting rod 7 </ b> D that connects one end of the elastic body 8 </ b> A is formed near the lower surface base end of the soil introduction body 7, while the lower edge of the inlet portion 5 on the lower surface of the bucket body 4. A connecting plate portion 27 for connecting the other end of the elastic body 8A is formed at a more distal end side (introduction inclined guide plate 20 side) position.

  And between this connection rod 7D and the connection board part 27, the elastic body 8A which employ | adopted the coil spring which has one tensile elasticity is connected to the installation state.

  Further, the elastic body 8A has a substantially horizontal state in which the soil introduction body 7 is substantially parallel to the bottom plate portion 4A of the bucket body 4 (the front and back surfaces of the soil introduction body 7 are substantially the same as the front and back surfaces of the bottom plate portion 4A of the bucket body 4). In the horizontal installation state, the one end and the other end of the elastic body 8A and the position of the shaft 24 of the soil introduction body 7 are arranged on substantially the same straight line when viewed from the side (in FIG. 4). From this state, when the soil introduction body 7 is started upward, the connecting rod 7D moves upward so that the elastic body 8A is positioned above the shaft 24 and the soil introduction body 7 is lowered downward. When it moves, the connecting rod 7D moves downward so that the elastic body 8A is positioned below the shaft 24.

  Accordingly, in a state where the one end portion and the other end portion of the elastic body 8A and the shaft 24 are substantially on the same straight line when viewed from the side (the soil introduction body 7 is substantially horizontal), the urging force of the elastic body 8A is It becomes difficult to apply a rotational biasing force to the soil introduction body 7. From this state, the soil introduction body 7 is rotated upward or downward so that the elastic body 8A is seen from the side and upward or downward from the position of the shaft 24. When displaced, the soil introduction body 7 is rotated upward or downward with the shaft 24 as a fulcrum by urging the distance between the connection rod 7D and the connection plate portion 27 to be reduced by the tensile elasticity of the elastic body 8A. It is configured to be urged and finally biased and held in the positioning state in the closed state at the upper limit of rotation and the cutting state at the lower limit of rotation.

  The operation of the elastic holding mechanism 8 in the continuous rotation operation of the soil introduction body 7, that is, the switching rotation from the soiled state to the closed state or from the closed state to the ground state will be described. When the soil introduction body 7 that is holding and urging is rotated upward against this holding and urging force, the soil introduction body 7 reaches a state where it is inclined upward from a substantially horizontal state (the position of the elastic body 8A is When a biasing force is generated to rotate in the direction of the closed state (when moved upward from the position of the shaft 24 when viewed from the side), the soil introduction body 7 is automatically rotated to the closed state after that. When the soil introduction body 7 held in the closed state is rotated downward against the holding urging force, the soil introduction body 7 reaches a state where it is inclined downward from the substantially horizontal state ( The position of the elastic body 8A is moved downward from the position of the shaft 24 when viewed from the side. The urging force that urges the rotation in the direction of the soil cutting state is generated, and then the soil introduction body 7 is automatically rotated to the soil cutting state.

  Accordingly, in the present embodiment, the elastic holding mechanism 8 that exhibits the above-described functions and effects is configured by the single elastic body 8A, so that the structure is not complicated and the elastic body holding mechanism 8 is configured simply and at low cost. It becomes possible. Although the structure is slightly more complicated than the present embodiment and the cost is high, the elastic holding mechanism 8 that exhibits the above-described functions and effects may be configured by using a plurality of elastic bodies 8A.

  Further, in this embodiment, in the closed state that is the upper limit of activation, the elastic body 8A near one end comes into contact with the upper base edge of the soil introduction body 7, and one end is bent upward from the contact portion. In the soil cutting state that is the lower limit of the sling, the one end of the elastic body 8A is in contact with the lower limit stopper piece 7C, and one end is bent downward from the contact portion. 8A enters the bucket body 4 from the inflow port portion 5 or protrudes downward from the bucket body 4 so as not to get in the way (see FIG. 4).

  Further, in this embodiment, the bucket body 4 is provided on the attachment base 3 so as to be rotatable, and the attachment base 3 is attached to the elevating attachment portion 2 provided so as to be moved up and down by operation on the traveling body 1. The bucket body 4 is provided so as to be movable up and down with respect to the traveling body 1.

  The operation when specifically used as a leveling machine will be described.

  For example, the soil introduction body 7 standing upright and closing the inflow port portion 5 is kicked out from the inside to the outside of the bucket body 4 with a foot or the like and rotated downward, so that the soil introduction body is rotated. When projecting 7 from the inlet 5 to the lower side of the bucket body 4, the earth cutting state of the soil introduction body 7 projecting downward from the bucket body 4 is held and urged by the elastic holding mechanism 8. When the traveling body 1 travels on the traveling ground surface 6 such as a high area, the soil introduction body 7 cuts the surface of the traveling soil surface 6 as the traveling body 1 travels, and the ground 6A serves as the back plate. It will flow into the bucket body 4 from the inlet portion 5 of the portion 40A.

  For example, when the cutting body 6A that has flowed into the bucket body 4 is moved to a lower portion of the soil surface 6 by traveling the traveling body 1, for example, as shown in FIGS. The driver simply lowers the lifting / lowering mounting portion 2 to bring the soil introduction body 7 projecting downward into contact with a protrusion on the ground, and the urging force of the elastic holding mechanism 8 closes the soil introduction body 7. Then, the soil introduction body 7 is automatically returned to the closed (standing) state by the urging force of the elastic holding mechanism 8 just by rotating to the position where it is urged to rotate. Even if the driver does not get off the traveling body 1 to mount a suitable plate or the like, the switching operation as described above can be performed while riding on the traveling body 1, and the workability is very excellent and convenient. Become.

  Further, for example, by removing the front plate portion 40C, the soil (or other material similar to soil) can be transported or leveled like a power shovel, and can be used as a large snow removal tool in winter.

  At this time, by moving (running) the traveling body 1, a carrying object such as soil or snow is introduced into the bucket body 4, and the traveling body 1 is moved and moved, and the bucket body 4 is rotated. It is comprised so that the conveyed product on the baseplate part 4A can be carried out slidingly from the introduction part of the front end side.

  More specifically, the present embodiment will be described. A mounting base 3 having a bucket body 4 is attached to a lifting / lowering mounting portion 2 of a tractor 1 (hereinafter referred to as a tractor 1) as a traveling body 1.

  That is, an attachment connecting portion is provided at the rear portion of the tractor 1 so as to be movable up and down. In this embodiment, the attachment base 3 can be attached using the attachment connecting portion (three-point mounting portion) as the lifting mounting portion 2. It is configured as follows.

  Further, the bucket body 4 is held substantially horizontally by the rotation lock mechanism 11 when the attachment base 3 is attached to the elevating attachment portion 2, and by operating the release operation portion 13 of the rotation lock mechanism 11, The bucket body 4 is configured to automatically rotate the tip side downward by its own weight.

  The mounting base 3 is constituted by a substantially inverted U-shaped frame, and the bucket body 4 can be mounted on one side surface (left side in FIG. 2) of the mounting base 3 and the lifting mounting portion 2 can be mounted on the other side surface. It is provided as follows.

  Further, as shown in FIG. 2, the lower ends of the free ends of the mounting base 3 are bent to one side of the mounting base 3 so that the mounting base 3 has an L shape when viewed from the side. The rear end of the reinforcing body 19A projecting from the bottom plate portion 4A of the bucket body 4 is pivotally mounted (shaft 12 is fixed) with the respective bent lower end portions as fulcrums 9, and the shaft 12 is fixed. Is located behind the center of gravity of the bucket body 4, and the front of the bucket body 4 (introducing inclined guide plate 20 side) is automatically rotated downward by its own weight with this as a fulcrum. .

  Reference numeral 14 in the figure denotes a chain that connects the attachment base 3 side and the bucket body 4 side so that the bucket body 4 does not excessively rotate downward.

  Further, the rotation lock mechanism 11 is provided on the upper part of the bucket body 4 and the upper part of the mounting base 3, and when the lock is released by the operation of the release operation part 13 of the rotation lock mechanism 11, it is automatically automatically performed. Then, the bucket body 4 is rotated and the front end side is inclined downward, so that transported objects such as snow and soil introduced into the bucket body 4 can be slid and discharged.

  Further, in this embodiment, the bucket body 4 and the traveling body 1 or the lifting attachment portion 2 of the traveling body 1 or the attachment base 3 attached to the elevation attachment portion 2 are connected and returned to the rotated bucket body 4. An elastic body 10 that is urged to rotate is provided.

  Further, when the rotation lock mechanism 11 is unlocked, the elastic body 10 automatically wins against the urging force of the elastic body 10 because the weight of the bucket body 4 including the transported object is won. When the transported material is slid and discharged from the rotated bucket body 4, the weight of the bucket body 4 (the weight of the bucket body 4 itself) becomes substantially empty. The bucket body 4 has a resilience that is strong enough that the return rotation bias wins and the bucket body 4 automatically returns and rotates and the rotation lock mechanism automatically engages and connects.

  Specifically, the elastic body 10 employs a coil spring having tensile elasticity, one end is connected to the mounting base 3, and the other end is connected to the upper part of the bucket body 4 above the fulcrum portion 9. .

  More specifically, one end of the coil spring 10 is connected to a mounting rod 18 projecting outward from the left and right bent portions of the mounting base 3, and the other end is in the middle of the back plate portion 40A of the bucket body 4. The connection piece 21 is provided adjacent to the reinforcing body 19A.

  Further, the mounting structure of the mounting base 3 to the lifting mounting portion 2 will be described. As shown in FIG. 2, two points below the three-point lifting mounting portion 2 are provided on both sides of the middle side of the mounting base 3. Connecting rods 3A and 3B to be connected to (not shown) project, and from the approximate center position of the reinforcing bar 3E installed between the middle ends of the free ends of the mounting base 3 to the outside on the other side. Then, a rod-like connection locking member 3C is provided so as to be pivotable up and down, and the protruding tip side of this connection locking member 3C is detachably locked to one upper point (not shown) of the three-point lifting attachment portion 2. Configure to get.

  That is, the mounting base 3 is connected to the three mounting points 2 of the three-point lifting mounting portion 2 by connecting the three points of the connecting rods 3A and 3B and the connecting locking member 3C. It is configured to be attached to.

  Further, between the upper portion of the mounting base 3 and the projecting tip of the coupling locking member 3C, an expansion / contraction member 3D having a structure that expands and contracts by rotating is installed and fixed, and the expansion / contraction member 3D is adjusted to expand and contract. It is configured such that the mounting angle of the mounting base 3 with respect to the lifting mounting portion 2 can be adjusted (by adjusting the angle of the coupling locking member 3C with respect to the mounting base 3). Therefore, for example, various shapes of the bucket body 4 are implemented, but the bucket body 4 attached to the attachment base 3 is in an appropriate state regardless of the shape of the bucket body 4 applied. The angle can be adjusted (for example, the bottom plate portion 4A is substantially horizontal).

  The connecting rods 3A and 3B are respectively provided on the mounting plate 17, and the respective mounting plates 17 are fixed to both sides of the mounting base 3 so that the connecting rods 3A and 3B are connected to the other side of the mounting base 3. The mounting plate 17 is configured to be fixed to the mounting base 3 via the position changing means 23 so that the positions of the connecting rods 3A and 3B can be changed in the vertical direction of the mounting base 3. ing.

  The position changing means 23 will be described. Each mounting plate 17 is formed with a plurality of stop holes and vertically long stop holes in a vertically aligned state, while each of the free end portions of the attachment base 3 is provided. Fastening tool that forms fastening holes at two locations on the upper and lower sides of the outer side surface, aligns any of the plurality of fastening holes on the upper side of the mounting plate 17 with the upper fastening hole of the mounting base 3, and employs bolts. The attachment plate 17 is attached to the attachment base 3 by fixing the long stop hole on the lower side of the attachment plate 17 to the attachment hole on the lower side of the attachment base 3 and fastening the bolt (fastener). It can be fastened and fixed, and by removing the upper bolt and loosening the lower bolt, the mounting plate 17 can be moved up and down, and the position of the multiple stop holes on the mounting plate 17 can be arbitrarily selected and bolted again Thus, the position of the mounting plate 17 can be changed and fixed.

  Therefore, this allows the manufacturer to use the lifting attachment portion 2 (attachment connection portion) having different vertical distances between the lower two points and the upper one point. In addition, for a case in which the left and right distances of the two lower points are different, for example, by preparing and replacing another mounting plate 17 provided with connecting rods 3A and 3B that can handle this, it is possible to cope with it. Also good.

  In other words, in this embodiment, any type of structure can be provided by including an attachment angle adjustment structure to the lifting attachment portion 2 by the expansion / contraction member 3D and a vertical position adjustment structure (and an exchange structure, for example) of the connecting rods 3A and 3B. Even if it is the bucket body 4, it can apply to the attachment base | substrate 3, and the structure which can attach the bucket body 4 (attachment base | substrate 3) with respect to the tractor (running body 1) of any manufacturer is implement | achieved.

  The present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

  For example, in the present embodiment, the case where the bucket body 4 is provided on the mounting base 3 and the mounting base 3 is attached to the lifting / lowering mounting portion 2 of the traveling body 1 has been described. It is also good.

  In the present embodiment, the elastic body 8A is connected to the bucket body 4 and the soil introduction body 7. However, the elastic body 8A may be connected to the inflow port portion 5 and the soil introduction body 7. .

It is a perspective view which shows the use condition of a present Example. It is a description exploded perspective view of a present Example. It is principal part expansion explanatory drawing which shows the action | operation of the soil introduction body of a present Example. It is principal part expansion explanatory drawing which shows the action | operation of the soil introduction body and elastic holding mechanism of a present Example. It is explanatory drawing which shows the earth cutting work by a present Example. It is explanatory drawing which showed the operation | movement which switches the soil introduction body of a present Example from the cutting state to the obstruction | occlusion state. FIG. 7 is an enlarged explanatory diagram of a main part of FIG. 6.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Lifting attachment part 3 Mounting base 4 Bucket body
4A Bottom plate part 5 Inlet part 6 Soil surface 6A Soil cutting 7 Soil introduction body 8 Elastic holding mechanism 8A Elastic body
24 axes
40 Standing wall

Claims (2)

A leveling machine attached to a traveling body, wherein a bucket body is provided on an elevating attachment part provided to be driven up and down by operation on the traveling body or an attachment base attached to the elevating attachment part. The inlet portion is formed in the standing wall portion provided at the base end portion of the bucket body , and the shaft of the base portion of the soil introduction body is formed below the inlet portion. It is pivotally attached, and the surface of the traveling soil surface on which the traveling body travels is cut as the traveling body travels by projecting downward from the bucket body from the inflow section, and the soil is removed from the inflow section. A soil introduction body to be introduced into the bucket body is provided at the inlet portion so as to be rotatable up and down, and the soil introduction body is activated and rotated so as to stand substantially parallel to the standing wall portion. Close all or a predetermined area of the inlet and It is configured to prevent the cut-in soil that has flowed into the body from being discharged from the inlet, and is connected to the soil inlet and the bucket body, and the soil inlet is connected to the bucket body from the inlet. An elastic holding mechanism is provided that has an elastic body that biases and holds the ground cutting state protruding downward and holds and biases the closed state of the inlet portion, and the elastic holding mechanism has one end of the elastic body connected to the soil introduction body. And the other end at the bottom surface of the bucket body and connected to the position of the bottom edge of the inlet of the standing wall portion of the base end portion of the bucket body, the soil introduction body In the horizontal state in which the front and back surfaces of the soil introduction body are substantially flush with the front and back surfaces of the bottom plate portion of the bucket body, the elastic plate has one end portion and the other end portion in a substantially horizontal state substantially parallel to the bottom plate portion of the bucket body. The position of the base end of the soil introduction body with the axis is substantially the same straight line when viewed from the side. To configure such, the cutting the rotating direction to be closed soil introducer held urged in the soil condition by causing substantially pivoted upward from the parallel substantially horizontal state between the bottom plate portion of said bucket body A direction in which the soil removal state is generated by rotating the soil introduction body that generates the urging force to be urged and is held in the closed state downward from a substantially horizontal state that is substantially parallel to the bottom plate portion of the bucket body. The soil introduction body that is held and urged in the ground state is brought into contact with the protrusion on the ground or the protrusion on the ground from above. When the soil introduction body is rotated upward from a substantially horizontal state substantially parallel to the bottom plate portion of the bucket body, the biasing force of the elastic body of the elastic holding mechanism is This urging force is generated by urging the rotation in the direction of the state. Ground leveling machines, characterized in that the soil introduction body is configured to rotate back to the closed state by.   A base portion of the soil introduction body is pivotally attached to a lower portion of the inlet portion, and the soil introduction body is activated and rotated to stand upright so as to be substantially flush with the standing wall portion. 2. The leveling machine according to claim 1, wherein the ground leveling machine is configured to block a predetermined range of the inlet portion and prevent the soil that has once flowed into the bucket body from being discharged from the inlet portion.

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