JP2009035957A - Work vehicle earth removal equipment - Google Patents

Abstract

An object of the present invention is to increase the rigidity of a soil removal device with a reinforcing member and make it difficult for soil to collect in the reinforcing member.
In a soil removal device (6) for a work vehicle in which a soil removal plate (50) is attached to a traveling device (2) with a pair of left and right attachment frames (41), the attachment frame (41) protrudes from the center of the left and right of the attachment surface of the soil removal plate (50). The reinforcing member 55 bulges from the upper part to the lower part of the attachment surface of the earth removing plate 50 between the two attachment frames 41 and between the left and right attachment frames 41 and the left and right ends of the earth removing plate 50. The inclined surface 55e which inclines below toward the crawler type traveling device 2 is formed on the upper surface of the reinforcing member 55.
[Selection] Figure 2

Description

  The present invention relates to a soil removal device attached to a work vehicle such as an excavation turning work vehicle.

2. Description of the Related Art Conventionally, a work vehicle soil removal device in which a soil removal plate is attached to a traveling device with a pair of left and right attachment frames is known (see, for example, Patent Document 1). Such a soil removal device has a mounting frame projecting from the soil removal plate and pivotally supporting its protruding end on the traveling device, and a cylinder is disposed between both frames, The earth removal plate can be moved up and down by lifting and lowering the cylinder. And while providing the reinforcement member between the right and left attachment frames, the reinforcement member was provided in the attachment surface which faces the traveling apparatus of the earth removal board, and the said earth removal apparatus was reinforced.
JP 2005-214008 A

  However, in the earth removal device for a work vehicle as described above, the reinforcing member is disposed between the left and right mounting frames and fixed to the mounting surface of the earth discharging plate. Was not reinforced. In addition, the upper surface of the reinforcing member may be formed in a substantially flat surface. In such a case, soil or the like that has climbed over the soil removal plate tends to accumulate on the upper surface of the reinforcing member during leveling work using the soil removal device. It was. For this reason, when the accumulated soil falls as a lump after leveling, the finish is deteriorated, and the soil must be removed for maintenance and the like, so it is necessary to perform troublesome work.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, in the soil removal device for a work vehicle in which the soil removal plate is attached to the traveling device with a pair of left and right attachment frames, the attachment frame protrudes from the left and right center portion of the attachment surface of the soil removal plate, A reinforcing member is fixed between the two mounting frames and between each of the left and right mounting frames and the left and right ends of the soil discharging plate so as to bulge from the upper part to the lower part of the mounting surface of the soil discharging plate. The inclined surface which inclines below toward the said traveling apparatus is formed in the upper surface of this reinforcement member.

  According to a second aspect of the present invention, the earth discharging plate, the reinforcing member, and the mounting frame are integrally fixed.

  According to a third aspect of the present invention, the reinforcing member is formed in a substantially square shape in a side sectional view and is formed in a trapezoidal shape in plan view.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, the rigidity of the earth removing device can be increased by reinforcing the vicinity of the earth removing plate. In addition, during leveling work using the earth removal device, it is possible to make it difficult for soil or the like that has climbed over the upper end of the earth removal plate to accumulate on the upper surface of the reinforcing member.

  In Claim 2, the rigidity of a soil removal apparatus can further be improved.

  According to the third aspect of the present invention, it is possible to fix the reinforcing member and the mounting frame by securing a large fixing portion, thereby further improving the rigidity of the earth removing device.

  Next, embodiments of the invention will be described.

  1 is a side view showing the overall configuration of a turning work vehicle to which a soil removal device according to an embodiment of the present invention is applied, FIG. 2 is a perspective view of the soil removal device, FIG. 3 is a plan view of the soil removal device, FIG. 4 is a cross-sectional view taken along the line XX in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line YY in FIG.

  First, a schematic configuration of a turning work vehicle 1 to which a soil removal apparatus according to an embodiment of the present invention is applied will be described. Note that the direction of arrow A in FIG.

  As shown in FIG. 1, the turning work vehicle 1 includes a crawler type traveling device 2, a revolving body 3 that is supported at the upper center of the crawler type traveling device 2 so as to be able to turn left and right, and front left and right sides of the revolving body 3. An excavation work device 4 mounted at the center is provided. In the crawler type traveling device 2, a soil removal device 6 is attached to one side of the front and back so as to be able to rotate up and down, and the soil removal device 6 can perform leveling work accompanying excavation work.

  In the revolving structure 3, the engine 8 is provided in the rear part of the swivel base 7, and it is covered with the bonnet 11 from the back and both right and left sides. A step-like support base is supported from the left front part to the rear part of the swivel base 7, and the engine 8 is disposed below the support base, while a driving operation unit is provided above the support base with a driver seat and various operations. It is configured with a tool and is covered with a cabin 18.

  The excavation work device 4 includes a boom 21, an arm 22, and a bucket 23. The boom 21, the arm 22, and the bucket 23 are connected to one end of each of the cylinders 24, 25, and 26, respectively, and can be rotated by extending and contracting driving thereof. And each of these members is comprised so that it may rotate by operation of the operation tool of a driving | operation operation part, and excavation work, loading work, etc. can be performed with the excavation work apparatus 4. FIG.

  Next, the configuration of the earth removal device 6 will be described in detail.

  In the crawler type traveling device 2 to which the earth removing device 6 is attached, side frames 32 are respectively connected to the left and right side portions of the track frame 31 that supports the swivel base 7 so as to be capable of turning, and the track frame is interposed between the left and right side frames 32. A support bracket 33 and a pair of left and right support side brackets 34 are provided at the rear portion of 31.

  The support bracket 33 is disposed at the rear left and right center of the track frame 31 and protrudes rearward from the track frame 31. The left and right support side brackets 34 are disposed on the left and right sides of the support bracket 33 at the rear portion of the track frame 31, and protrude rearward from the track frame 31 in the same manner as the support bracket 33.

  A mounting frame 41 is disposed behind the left and right support side brackets 34 so as to extend in the front-rear direction, and the front end of the mounting frame 41 is pivoted to the support side bracket 34 by a pivot shaft 42 so as to be vertically rotatable. It is supported. An elevating cylinder 43 is disposed between the left and right mounting frames 41, and a cylinder rod 43a of the elevating cylinder 43 is pivotally supported on the support bracket 33 by a pivot shaft 44 so as to be rotatable up and down.

  The earth removal plate 50 is disposed behind the left and right mounting frames 41 and the elevating cylinder 43 so as to extend in the left-right direction, and the base end portion of the elevating cylinder 43 is the left and right central portion of the front surface (rear surface) of the earth removal plate 50. Is pivotally supported by a pivot shaft 52 so as to be vertically rotatable. Further, the rear end of the mounting frame 41 is fixed to the left and right sides of the bracket 51 on the front surface of the earth discharging plate 50. In other words, the mounting frame 41 protrudes forward (in the vehicle front-rear central direction) from the left and right central portion of the front surface (back surface) of the earth discharging plate 50.

  Thus, the left and right mounting frames 41 are rotated in the vertical direction by the expansion and contraction operation of the elevating cylinder 43 so that the earth removing plate 50 is raised and lowered. That is, when the elevating cylinder 43 is contracted, the attachment frame 41 is rotated upward, and the earth discharging plate 50 is raised. On the other hand, when the elevating cylinder 43 is extended, the attachment frame 41 is rotated downward, and the earth removal plate 50 is lowered.

  In such a soil removal device 6, reinforcing members 53 and 55 that reinforce the soil removal device 6 are provided on the left and right mounting frames 41 and the soil removal board 50. One reinforcing member 53 is composed of a rod-shaped frame, and is provided horizontally between the front and rear middle portions of both mounting frames 41. Thereby, the left and right mounting frames 41 are connected, and reinforcement in the vicinity of the mounting frames 41 is performed.

  The other reinforcing member 55 is composed of left and right reinforcing plates 55a and 55b and left and right central reinforcing plates 55c. The vertical and horizontal widths of the reinforcing plates 55a, 55b, and 55c are substantially the same as those of the earth removing plate 50. Are provided on the mounting surface (front surface) of the earth discharging plate 50 on the side facing the track frame 31 so as to extend laterally across the left and right ends. That is, the left reinforcing plate 55a, the central reinforcing plate 55c, and the right reinforcing plate 55b are fixed in order between the left end and the right end of the earth discharging plate 50.

  The left, right, and center reinforcing plates 55a, 55b, and 55c are bent so as to bulge toward the track frame 31 in the middle of the upper and lower sides, and are formed in a substantially letter shape in side view. Further, in a plan view, it is swelled to the track frame 31 side by a predetermined front and rear width, and the front and rear widths of the left and right reinforcing plates 55a and 55b increase from the left and right end sides of the earth discharging plate 50 toward the center. Is formed.

  On the mounting surface of the earth removing plate 50, the left and right reinforcing plates 55a and 55b are disposed between the left and right attaching frames 41 and the side plates 58 respectively fixed to the left and right ends of the earth removing plate 50, The outer peripheral edge is integrally fixed to the mounting frame 41 and the side plate 58 by means such as welding, and is also fixed integrally to the upper and lower portions of the earth removing plate 50 by means such as welding.

  The left and right central reinforcing plates 55c are disposed between the left and right mounting frames 41, and are integrally fixed to the both mounting frames 41 by means of welding or the like at the outer peripheral edges thereof. And are integrally fixed by means such as welding.

  In the present embodiment, the vertical reinforcing plate 55c is provided with a vertical slit 55d, and the bracket 51 protrudes from the rear surface of the earth discharging plate 50 toward the track frame 31 through the slit 55d. Yes. The central reinforcing plate 55c is integrally fixed to the bracket 51 by means of welding or the like at the slit surface.

  In this way, the earth removing plate 50, the reinforcing member 55 including the reinforcing plates 55a, 55b, and 55c, and the left and right attachment frames 41 are integrally fixed by the earth removing device 6. The reinforcing plates 55a and 55b are formed in a substantially square shape in a side sectional view as described above, and are configured in a trapezoidal shape in plan view, so that the fixing portion with the mounting frame 41 is as large as possible and is strong. It is fixed.

  Further, the reinforcing member 55 is fixed to the mounting surface of the earth discharging plate 50 so as to bulge forward at the upper and lower central portions, and the upper surface thereof is an inclined surface 55e inclined downward toward the track frame 31 side. Yes. As a result, when leveling work is performed with the soil removal device 6, soil or the like over the upper end of the soil removal plate 50 can easily slide off from the upper surface of the reinforcing member 55.

  As described above, in the earth removal device 6 of the turning work vehicle 1 in which the earth removal plate 50 is attached to the crawler type traveling device 2 with the pair of left and right attachment frames 41, the left and right central portions of the attachment surface of the earth removal plate 50 are The mounting frame 41 protrudes toward the track frame 31, and the reinforcing plates 55a and 55b are provided between the mounting frames 41 and between the left and right mounting frames 41 and the left and right end portions of the earth discharging plate 50. A reinforcing member 55 made of 55c is fixed so as to bulge from the upper part to the lower part of the mounting surface of the earth discharging plate 50, and is inclined downward toward the crawler type traveling device 2 on the upper surface of the reinforcing member 55. By forming the inclined surface 55e, it is possible to reinforce the vicinity of the earth removing plate 50 and increase the rigidity of the earth removing device 6. Further, when leveling work using the soil removal device 6, soil or the like over the upper end of the soil removal plate 50 can be made difficult to accumulate on the upper surface of the reinforcing member 55.

  Further, in the earth removing device 6 of the turning work vehicle 1, the earth removing plate 50, the reinforcing member 55, and the mounting frame 41 are integrally fixed to further increase the rigidity of the earth removing device 6. be able to.

  Further, in the earth removal device 6 of the turning work vehicle 1, the reinforcing member 55 is formed in a substantially square shape in a side sectional view, and is configured in a trapezoidal shape in a plan view, whereby the reinforcing member 55 and the mounting frame 41 are arranged. It is possible to fix each other by taking a large fixing portion, and the rigidity of the earth removing device 6 can be further increased.

The side view which showed the whole structure of the turning working vehicle to which the earth removal apparatus which concerns on one Example of this invention was applied. The perspective view of a soil removal apparatus. The top view of a soil removal apparatus. XX arrow sectional drawing in FIG. FIG. 4 is a cross-sectional view taken along line YY in FIG. 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Turning work vehicle 2 Traveling apparatus 6 Earth removal apparatus 41 Mounting frame 50 Earth removal board 55 Reinforcement member 55a Reinforcement board 55b Reinforcement board 55c Reinforcement board 55e Inclined surface

Claims (3)

  In a work vehicle earthing device for attaching a earthing plate to a traveling device with a pair of left and right mounting frames, the mounting frame projects from the left and right center part of the mounting surface of the earthing plate, and between the both mounting frames, and A reinforcing member is fixed between each of the left and right mounting frames and the left and right ends of the earth discharging plate so as to bulge from the upper part to the lower part of the mounting surface of the earth discharging plate. An earthing device for a work vehicle, wherein an inclined surface that is inclined downward toward a traveling device is formed.   The earth removal device for a work vehicle according to claim 1, wherein the earth removal plate, the reinforcing member, and the mounting frame are integrally fixed.   The earth removing device for a work vehicle according to claim 1 or 2, wherein the reinforcing member is formed in a substantially square shape in a side cross-sectional view and configured in a trapezoidal shape in a plan view.

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