JP4496025B2 - Hydraulic hose retainer for articulated vehicles - Google Patents

Description

  The present invention relates to a hydraulic hose holding device for an articulated vehicle.

  Conventionally, as shown in Patent Documents 1 and 2, in an articulated vehicle such as a motor grader, a technique for intersecting hydraulic hose groups at the center of the articulate is known. FIG. 6 is a plan view showing the arrangement of the hydraulic hose groups 26L and 26R disclosed in Patent Documents 1 and 2, and the prior art will be described below with reference to FIG.

  In FIG. 6, the motor grader includes a front frame 12 and a rear frame 13 that are rotatable about a center pin 14. The left and right hydraulic hose groups 26L, 26R locked to the rear frame 13 by the clamps 28, 28 intersect with each other on the center axis of the center pin 14 and extend along both sides of the front frame 12.

Japanese Utility Model Publication No.59-167858 No. 1-31643

However, the prior art has the following problems.
FIG. 7 is a perspective view of the left and right hydraulic hose groups 26L and 26R in the vicinity of the center pin 14. In many motor graders, the rear frame 13 has a box shape, and an opening 29 is provided at the front. A device 30 such as a transmission is incorporated in the rear frame 13, and it is necessary to access the device 30 by putting a hand in the opening 29 in order to perform maintenance.

  However, in the prior art, as shown in FIG. 7, the left and right hydraulic hose groups 26L and 26R are alternately stacked in front of the opening 29 to form a mesh. Therefore, even if it is going to reach the device 30 from the opening 29, it may be blocked by the hydraulic hose groups 26L and 26R and reach out. As a result, every time maintenance of the device 30 is performed, troubles such as removing the hydraulic hose groups 26L and 26R are required, and there is a problem that work efficiency is lowered.

  In addition, when assembling the hydraulic hose groups 26L and 26R to the vehicle body, the hydraulic hoses must be alternately crossed one by one, which poses a problem of assembling.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide a hydraulic hose holding device for an articulated vehicle in which equipment maintenance is easy and assembly is easy.

In order to achieve the above object, the present invention provides:
In a hydraulic hose holding device for an articulated vehicle, wherein a plurality of hydraulic hoses are disposed between a front frame and a rear frame that are rotatably connected,
The plurality of hydraulic hoses are divided into two hydraulic hose groups,
A first bundling fixing member for bundling one hydraulic hose group and fixing it along a wall on one side of the rear frame;
A second binding fixing member for bundling one hydraulic hose group and fixing it along the other wall of the front frame;
A third bundling fixing member for bundling the other hydraulic hose group and fixing it along the other wall of the rear frame;
A fourth bundling fixing member for bundling the other hydraulic hose group and fixing it along the wall on one side of the front frame;
The front frame and the rear frame are crossed so that the hydraulic hose group on one side passes above the hydraulic hose group on the other side.
In addition, the second invention based on the first invention,
The first to fourth binding fixing members bundle hydraulic hose groups in a line.

According to the first invention, since the hydraulic hose group on one side crosses so as to pass above the hydraulic hose group on the other side, the hydraulic hose groups do not get entangled like a mesh. . Therefore, for example, maintenance of equipment and the like behind the hydraulic hose group is facilitated. In addition, if the hydraulic hose group bundled by the binding fixing member outside the vehicle body is assembled to the vehicle body, the assembly is easy.
According to the second invention, since the hydraulic hoses are bundled in a line, the hydraulic hoses are less likely to get entangled even if the vehicle body is articulated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a side view of a motor grader 11 as an example of an articulated vehicle. In the following description, the traveling direction of the vehicle body is the front-rear direction. The left and right directions are determined when viewed from the rear of the motor grader 11.

  In FIG. 1, the motor grader 11 includes a front frame 12 at the front and a rear frame 13 connected to the front frame 12 by a pair of upper and lower center pins 14 and 14.

  A draw bar 15 is swingably attached to the lower front end of the front frame 12. The draw bar 15 moves up and down in the vertical direction by the synchronized expansion and contraction of the pair of left and right lift cylinders 17 and 17, and tilts in the vertical direction by the different expansion and contraction of the lift cylinders 17 and 17. The draw bar 15 is tilted in the left-right direction by the expansion and contraction of the draw bar shift cylinder 19.

  An annular circle 18 as viewed from above the vehicle body is rotatably attached to the draw bar 15. A blade 16 is attached to the circle 18. When the circle 18 is driven to rotate by a hydraulic motor (not shown), the blade 16 rotates clockwise / counterclockwise as viewed from above the vehicle body. The motor grader 11 performs work such as leveling and snow removal using such a working machine.

  A steerable front wheel 20 is attached to the lower portion of the front frame 12. A driver's cab 23 is mounted on the upper part of the front frame 12. An operation means 24 such as an operation lever for operating the brake pedal and the working machine is built in the cab 23. Further, a middle wheel 21 and a rear wheel 22 are attached to the lower part of the rear frame 13.

  2 is a detailed view of a P portion in FIG. 1, FIG. 3 is a perspective view of the P portion, and FIG. 4 is a plan view of the vicinity of the center pins 14 and 14 (viewed along AA in FIG. 2). The cab 23 is omitted.

  As shown in FIG. 2, the bracket 36 formed in an inverted U shape at the rear portion of the front frame 12 and the bracket 37 formed in a U shape at the front portion of the rear frame 13 are They are connected by a pair of center pins 14, 14. Thereby, the front frame 12 and the rear frame 13 are rotatable about the center pins 14 and 14.

  As shown in FIGS. 3 and 4, pin holes 32 and 33 are provided in the vicinity of the center pins 14 and 14 in the rear portion of the front frame 12 and the front portion of the rear frame 13. For example, when traveling on the road, the fixing pin 31 is passed through the pin holes 32 and 33 so that the front frame 12 and the rear frame 13 are not articulated during traveling.

  The rear frame 13 is formed in a hollow box shape, and an opening 29 is provided in the front portion of the rear frame 13. Inside the rear frame 13, devices 30 such as an engine, a transmission, and a hydraulic pump are housed.

  As shown in FIGS. 2 to 4, hydraulic hose groups 26 </ b> L and 26 </ b> R including a plurality of hydraulic hoses straddle between the front frame 12 and the rear frame 13. These hydraulic hoses are, for example, a brake hydraulic hose that sends operating oil from a brake pedal in the driver's cab to brakes (not shown) of the middle wheel 21 and rear wheel 22, and a pilot hose that sends pilot oil from the hydraulic pump to the operating lever in the driver's cab. Etc.

  The hydraulic hose groups 26L and 26R include a left hydraulic hose group 26L disposed along the left inner wall 39L of the rear frame 13, and a right hydraulic hose group 26R disposed along the right inner wall 39R of the rear frame 13. There is.

  The left and right hydraulic hose groups 26L, 26R are bundled vertically in a row by a plurality or a single front clamps 34L, 34R and rear clamps 35L, 35R. The front clamps 34L and 34R and the rear clamps 35L and 35R are binding fixing members that bind the hydraulic hose and fix it to the wall.

  The rear clamp 35L of the left hydraulic hose group 26L is fixed to the left inner wall 39L of the rear frame 13, and the left hydraulic hose group 26L is along the left inner wall 39L of the rear frame 13. The left hydraulic hose group 26L goes out toward the front frame 12 from the opening 29 at the front part of the rear frame 13. The front clamp 34L of the left hydraulic hose group 26L is fixed to the right outer wall 38R of the front frame 12, and the left hydraulic hose group 26L is along the right outer wall 38R of the front frame 12.

  The rear clamp 35R of the right hydraulic hose group 26R is fixed to the right inner wall 39R of the rear frame 13, and the right hydraulic hose group 26R extends along the right inner wall 39R of the rear frame 13. The right hydraulic hose group 26 </ b> R goes out of the rear frame 13 from the opening 29 at the front of the rear frame 13. The front clamp 34R of the right hydraulic hose group 26R is fixed to the left outer wall 38L of the front frame 12, and the right hydraulic hose group 26R is aligned with the left outer wall 38L of the front frame 12.

  As a result, the left hydraulic hose group 26L and the right hydraulic hose group 26R intersect between the center pins 14 and 14 in the vertical direction and in the vicinity of the center of the center pins 14 and 14 in the horizontal plane. At this time, all the hydraulic hoses in one hydraulic hose group (here, the right hydraulic hose group 26R) pass above the other hydraulic hose group (here, the left hydraulic hose group 26L).

  Next, assembly of the hydraulic hose groups 26L and 26R to the vehicle body will be described. FIG. 5 is a perspective view of the left hydraulic hose group 26L. As shown in FIG. 5, the left hydraulic hose group 26L is bundled in a vertical row by front and rear clamps 34L and 35L in advance outside the vehicle body. Thereby, the left hydraulic hose group 26L can be handled as one component.

  At the time of assembly, the front clamp 34L and the rear clamp 35L are fixed to the front frame 12 and the rear frame 13 with bolts, respectively. Thereby, it can assemble in a short time compared with assembling one hydraulic hose at a time. The same applies to the right hydraulic hose group 26R.

  As described above, according to the present invention, the left and right hydraulic hose groups 26L, 26R are vertically bundled in a row with the clamps 34L, 34R, 35L, 35R, and the clamps 34L, 34R, 35L, 35R are framed 12, 13 It is fixed to.

  Here, in FIG. 5, the hydraulic hose in the range sandwiched between the front clamp 34 </ b> L and the rear clamp 35 </ b> L (the range indicated by B in FIG. 5) is located between the front frame 12 and the rear frame 13. It is a hydraulic hose that moves freely during articulation. The lengths of the hydraulic hoses in this range B are substantially equal and are arranged in a line in the vertical direction. Therefore, when the frames 12 and 13 are articulated, the hydraulic hoses in the range B are arranged in parallel in the vertical direction and move in the same manner, so that they are less likely to be damaged by interference with each other. The same applies to the right hydraulic hose group 26R.

  Further, one of the left and right hydraulic hose groups 26L and 26R is crossed so as to pass above the other. Thereby, the hydraulic hose groups 26L and 26R are less likely to interfere with each other. As shown in FIGS. 2 and 3, the opening 29 is not completely blocked by the hydraulic hose groups 26L and 26R, and a hand is put into the rear frame 13 to maintain the internal equipment 30. It becomes easy.

  In the above description, the left and right hydraulic hose groups 26L and 26R have been described so as to accurately intersect between the center pins 14 and 14 in the horizontal plane, but the present invention is not limited to this, and in the vicinity thereof. Just cross over.

  Further, the hydraulic hose groups 26L and 26R have been described so as to be along the inner walls 39L and 39R of the rear frame and the outer walls 38L and 38R of the front frame. However, the present invention is not limited to this, and is along the walls of the rear frame and the front frame. You can make it. In addition, although the hydraulic hose has been described as being bundled in a vertical row with a clamp, the present invention is not limited to this. However, by bundling in a vertical row, the hydraulic hoses are less likely to be entangled at the intersecting points, and it is optimal to have a vertical row as in the embodiment.

  Moreover, although the motor grader in which the driver's seat is mounted on the front frame has been described, the present invention is not limited to this, and the driver's seat may be mounted on the rear frame. Moreover, the present invention can be applied not only to motor graders but also to other articulated vehicles in general.

  Further, the hydraulic hoses are bound and fixed to the wall by the clamps 34L, 34R, 35L, and 35R. However, for example, the hydraulic hoses are bound by the clamp and fixed to the wall by another fixing member. Good. In such a case, the clamp and the fixing member are combined to form a binding fixing member.

A side view of a motor grader (embodiment). P part detailed drawing of FIG. 1 (embodiment). P section perspective view of FIG. 1 (embodiment). The top view of a center pin vicinity (embodiment). The perspective view of a hydraulic hose group (embodiment). The top view which shows arrangement | positioning of a hydraulic hose group (prior art). The perspective view of the hydraulic hose group in an intersection position (prior art).

Explanation of symbols

  11: Motor grader, 12: Front frame, 13: Rear frame, 14: Center pin, 15: Drawbar, 16: Blade, 17: Lift cylinder, 18: Circle, 19: Drawbar shift cylinder, 20: Front wheel, 21: Middle wheel , 22: rear wheel, 23: cab, 24: operation means, 26L: left hydraulic hose group, 26R: right hydraulic hose group, 28: clamp, 29: opening, 30: equipment, 31: fixing pin, 32: Pin hole, 33: Pin hole, 34L, 34R: Front clamp, 35L, 35R: Rear clamp, 36: Bracket, 37: Bracket, 38L, 38R: Front frame outer wall, 39L, 39R: Rear frame inner wall

Claims (2)

In a hydraulic hose holding device for an articulated vehicle, wherein a plurality of hydraulic hoses are disposed between a front frame and a rear frame that are rotatably connected,
The plurality of hydraulic hoses are divided into two hydraulic hose groups,
A first bundling fixing member for bundling one hydraulic hose group and fixing it along a wall on one side of the rear frame;
A second binding fixing member for bundling one hydraulic hose group and fixing it along the other wall of the front frame;
A third bundling fixing member for bundling the other hydraulic hose group and fixing it along the other wall of the rear frame;
A fourth bundling fixing member for bundling the other hydraulic hose group and fixing it along the wall on one side of the front frame;
A hydraulic hose holding device for an articulated vehicle, wherein a hydraulic hose group on one side crosses between a front frame and a rear frame so that the hydraulic hose group on one side passes above the hydraulic hose group on the other side. In the articulated vehicle hydraulic hose holding device according to claim 1,
The hydraulic hose holding device for an articulated vehicle, wherein the first to fourth binding fixing members bundle hydraulic hose groups in a line.

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