JP2004084297A - Combined support mechanism for snow removal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, because the rear wheels of a vehicle of the type steering front wheels cannot pass within an operational track during the operation of removing snow with the minimum turn of a snow-removal brush disposed on the vehicle, snow accumulated in an unremoved snow part outside of the operational track is compacted by the rear wheels and cannot be removed by subsequent brushing operation. <P>SOLUTION: A support frame is rotatably joined via a swing bracket, a vertical center support and hinges to the front of a mounting plate secured to the vehicle. A brush support frame is slidably joined to the support frame. During the operation of removing snow with a minimum turn, the rear wheels of the vehicle are allowed to pass within the operational track of the brush by the expansions and contractions of right and left swing cylinders, right and left angling cylinders, and shift cylinders. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism that allows a rear wheel of a vehicle to pass through a work track during a minimum turning snow removal operation by a snow removal brush provided on the vehicle.
[0002]
[Prior art]
In the operation of the conventional snow removing brush, a straight running operation and a normal turning snow removing operation are mainly performed, and no mechanism is considered in which the rear wheel of the vehicle can pass through the work path during the minimum turning snow removing operation.
Japanese Patent Application Laid-Open No. 2002-61139 states that the wheels on the vehicle body side fall within the sweeping width of the brush body even when the brush body is turned. However, since this is a straight traveling state and the wheels are front wheels, front wheel steering is performed. The mechanism for passing the rear wheel of the vehicle in the work track at the time of the minimum turning snow removal work in the type vehicle is not considered.
[0003]
[Problems to be solved by the invention]
Conventional snow removing brushes are equipped with an elevating mechanism and an angling mechanism for changing the angle of the brush from side to side. there were.
Therefore, since the snow in the unsnow-removed area outside the work locus is squeezed with the rear wheel to make the snow compact, it is impossible to remove the compact snow in the subsequent brush work.
Further, in order to satisfy the above conditions, it is necessary to increase the length of the brush body. However, as the length of the brush body increases, the brush cover and the like also increase in size and weight. According to the mounting method, the front overhang is extended because the mounting position is also in the forward direction. Therefore, the load on the front axle of the vehicle increases, which adversely affects the steering stability.
[0004]
The present invention has been made in view of such problems of the conventional technology, and an object of the present invention is to provide a device that can solve the above-described problems.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is as follows.
A swing bracket is rotatably connected to the front of the mounting plate fixed to the front frame of the vehicle by a vertical axis, and the upper center support and the lower center support are provided at the top and bottom of the front of the swing bracket by horizontal pins. Each of the front portions of the upper and lower center supports is rotatably connected to a hinge by a horizontal pin, and the hinge is rotatably connected to a support frame by a vertical axis, The support frame is slidably connected to the brush support frame via a shift guide.
The trunnions of the swing cylinder are rotatably connected to the front left and right brackets of the mounting plate, respectively, and the ends of the piston rods of the swing cylinder are rotatably connected to the swing bracket by vertical pins, respectively. The upper and lower center support swings right and left by alternately expanding and contracting the swing cylinder.
The clevis of the left angling cylinder and the clevis of the right angling cylinder are rotatably connected to each other by vertical pins at the rear of the hinge. The brush cover and the brush are tangled to the left and right via the brush support frame by the left and right angling cylinders being alternately extended and contracted by the left and right angling cylinders.
The clevis of the shift cylinder is rotatably connected to the right bracket of the support frame by a vertical pin, and the end of the piston rod of the shift cylinder is rotatably connected to the horizontal axis. As a result, the brush support frame, the brush cover, and the brush shift left and right based on the support frame.
A trunnion of a lifting cylinder is rotatably connected to a bracket in front of the swing bracket, and an end of a piston rod of the lifting cylinder is connected to a lower center support by a horizontal pin. The support is raised and lowered, and the brush is raised and lowered by moving the upper center support up and down in conjunction therewith.
With the configuration described above, the rear wheel of the vehicle can pass through the work locus of the brush even during the minimum turning snow removal work.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings based on examples.
The composite support mechanism for a snow removal device of the present invention is configured as follows.
In a support mechanism for supporting a snow removal brush provided at the front of a front-wheel steering vehicle, a swing bracket is attached to the front of a mounting plate 1 fixed to a front frame of a vehicle A by a vertical axis 5. The upper center support 3 and the rear portion of the lower center support 4 are respectively connected to the upper and lower surfaces of the swing bracket by horizontal pins 7 so as to be freely rotatable. Is connected to a hinge 12 by a horizontal pin 7 so as to be rotatable. The hinge 12 is rotatably connected to a support frame 13 by a longitudinal axis 6, and the support frame 13 is connected to a shift guide 14. The brush support frame 18 is fixed to a brush cover 23, and the brush B is rotatably supported by the brush cover 23.
[0007]
The trunnions of the left swing cylinder 8 and the right swing cylinder 9 are rotatably connected to the front left and right brackets 1A of the mounting plate 1 respectively. The ends of the piston rods of the left and right swing cylinders 8 and 9 are vertically aligned. Each of the left and right swing cylinders 8 and 9 is alternately extended and contracted by the right and left swing cylinders 8 and 9 to swing the upper and lower center supports 3 and 4 left and right.
The clevises of the left and right angling cylinders 15 and 16 are rotatably connected to the rear of the hinge 12 by vertical pins 24, respectively, and the ends of the piston rods of the left and right angling cylinders 15 and 16 are supported. The brush cover 23 and the brush B are connected to the left and right brackets on the back of the frame 13 by a vertical pin 17 so as to be freely rotatable, and the left and right angling cylinders 15 and 16 alternately expand and contract by the brush support frame 18. Angling left and right.
[0008]
The clevis of the shift cylinder 20 is rotatably connected to the right bracket of the support frame 13 by a vertical pin 22, and the end of the piston rod of the shift cylinder 20 is rotatably connected to the horizontal shaft 21. The brush support frame 18, the brush cover 23, and the brush B shift left and right based on the support frame 13 by the expansion and contraction operation of the shift cylinder 20.
A trunnion of an elevating cylinder 10 is rotatably connected to a bracket 2A in front of the swing bracket 2, and an end of a piston rod of the elevating cylinder 10 is connected to a lower center support 4 by a horizontal pin 11, and the elevating cylinder The lower center support 4 is moved up and down by the extension and contraction operation of 10, and the brush B is moved up and down by moving the upper center support 3 up and down in conjunction with the lower center support 4.
[0009]
The details will be described below.
FIG. 1 is a plan view of the brush B of the present invention in a minimum turning state during snow removal work.
FIG. 2 is an enlarged plan view of a main part in the same state, in which the shortening of the left swing cylinder 8 and the extension of the right swing cylinder 9 are simultaneously operated, and the swing bracket 2 swings to the left with the vertical axis 5 as an axis.
Therefore, the upper center support 3 and the lower center support 4 which are respectively connected to the swing bracket 2 by the horizontal pins 7 so as to be freely rotatable also swing to the left.
Further, the left and right angling cylinders 15 and 16 respectively expand and contract as appropriate, so that the advancing angle of the brush B is maintained at an appropriate angle with the longitudinal axis 6 as an axis, and the shift cylinder 20 is extended to shift the brush B to the left. Thus, the rear wheel of the vehicle can pass through the work locus of the brush B as shown in FIG.
FIG. 3 is a plan view of the straight snow removal state during the snow removal operation using the brush B, and the upper and lower center supports 3, 4 together with the swing bracket 2 along with the swing bracket 2 are moved in the traveling direction by the uniform expansion and contraction of the left and right swing cylinders 8, 9. The shift cylinder 20 is in a straight-ahead state, and a proper working width on the left and right is maintained by an appropriate expansion and contraction operation of the shift cylinder 20.
[0010]
FIG. 4 is a plan view of the intermediate position of the advancing angle of the brush B in the left and right freely changing angles. The left and right swing cylinders 8 and 9 are respectively intermediate positions of expansion and contraction, and the left and right angling cylinders 15 and 16 are also respectively. Since the intermediate position of the expansion and contraction is maintained, the brush B is in a direction perpendicular to the traveling direction of the vehicle, and the width of the brush B is equal to the left and right with respect to the center of the vehicle due to the appropriate expansion and contraction position of the shift cylinder 20.
FIG. 5 is a left side view of an intermediate position of the brush advancing angle when the brush is freely adjustable. The intermediate position of the left and right swing cylinders 8 and 9 and the left and right angling cylinders 15 and 16 is maintained. The lower part is formed by a telescopic operation of an elevating cylinder 10 rotatably connected to a bracket 2A in front of the swing bracket 2 by a trunnion so as to be rotatable in a direction perpendicular to the traveling direction of the vehicle, via a piston rod and a horizontal pin 11. As the center support 4 moves up and down, the upper center support 3 and the brush B move up and down at the same time. By adjusting the caster wheel 25 at the time of descending, a proper ground contact state of the brush is maintained.
[0011]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
1. During snow removal work with a minimum turning with a brush, the rear wheel of the vehicle does not pass outside the work track, so the snow on the unsnow-removed part will not be pressed by the rear wheel to make snow compaction, and the brush will not leave snow accumulation even afterwards, making it efficient A great deal of snow removal work is possible.
2. Since it is not necessary to increase the front overhang, steering stability is not impaired, and further, it is possible to prevent an increase in front wheel load.
3. In addition, it has the effects of being inexpensive to manufacture, easy to assemble since the number of parts is small, and economical.
[Brief description of the drawings]
FIG. 1 is a plan view of a minimum left turning state during a snow removal operation using a brush.
FIG. 2 is an enlarged plan view of a main part in a minimum left turning state during a snow removing operation by a brush.
FIG. 3 is a plan view of a straight snow removal state during a snow removal operation using a brush.
FIG. 4 is a plan view of an intermediate position in a horizontal movement of the brush advancing angle.
FIG. 5 is a left side view of an intermediate position when the brush advancing angle is freely variable.
[Explanation of symbols]
A Vehicle B Brush 1 Mounting plate 1A, 2A Bracket 2 Swing bracket 3 Upper center support 4 Lower center support 5, 6 Vertical axis 7, 11 Horizontal pin 8 Left swing cylinder 9 Right swing cylinder 10 Lifting cylinder 12 Hinge 13 Support frame 14 Shift Guide 15 Left angling cylinder 16 Right angling cylinder 17, 19, 22, 24 Vertical pin 18 Brush support frame 20 Shift cylinder 21 Horizontal axis 23 Brush cover 25 Caster wheel

Claims (1)

In a supporting mechanism for supporting a snow removing brush, a swing bracket (2) is rotatably connected to a front portion of a mounting plate (1) fixed to a front frame of a vehicle (A) by a vertical axis (5). The upper center support (3) and the rear part of the lower center support (4) are rotatably connected to the upper and lower surfaces of the swing bracket by horizontal pins (7), respectively. ) Are connected to a hinge (12) rotatably by a horizontal pin (7), and the hinge (12) is rotatably connected to a support frame (13) by a longitudinal axis (6). The support frame (13) is slidably connected to the brush support frame (18) via a shift guide (14), and a left swing cylinder is mounted on the left and right brackets (1A) at the front of the mounting plate (1). (8) and right swing cylinder (9 Of the piston rods of the left and right swing cylinders (8, 9) are rotatably connected to the swing bracket (2) by vertical pins (19). At the rear of the hinge (12), clevises of a left angle cylinder (15) and a right angle cylinder (16) are rotatably connected by vertical pins (24), respectively. , 16), the ends of the piston rods are rotatably connected to the left and right brackets on the back of the support frame (13) by vertical pins (17), respectively. ), The clevis of the shift cylinder (20) is rotatably connected, and the end of the piston rod of the shift cylinder (20) is rotatably connected to the horizontal shaft (21). A trunnion of a lifting cylinder (10) is rotatably connected to a bracket (2A) in front of the lifting bracket (2), and an end of a piston rod of the lifting cylinder (10) is lowered by a horizontal pin (11). A compound for a snow removal device, wherein the rear wheel of the vehicle (A) is configured to be able to pass through the work path of the brush (B) during snow removal work by minimum turning, which is provided continuously with the center support (4). Shape support mechanism.

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