JP4243555B2 - Snowplow - Google Patents

Description

  The present invention relates to an improvement of a snowplow that removes snow by scraping snow on a road surface or a runway with a rotating brush.

On airport runways, from the viewpoint of ensuring safety and mobility when taking off and landing aircraft, there should be no snow on the road surface, and snow must be removed until the road surface is exposed. There are strict security standards. The plow snowplow is suitable for snow removal when there is a lot of snow, but it is difficult to avoid a slight amount of snow remaining on the road surface, and the snow cannot be removed until the road surface is exposed. For this reason, a brush type snowplow as shown in Patent Document 1 is used, and the snow remaining thinly on the road surface is scraped off by the rotating brush and swept to the side of the rotating brush.
JP 2002-61139 A

  The snow removal width in the above-described brush-type snowplow is a width that makes the rotary brush less than the length of the rotary brush because the rotary brush is tilted and used. That is, the snow removal width is determined by the inclination angle of the rotating brush with respect to the direction perpendicular to the traveling direction.

  By the way, since the length of the rotating brush is determined for each model, the snow removal width can only be changed by changing the inclination angle of the rotating brush. The smaller the tilt angle of the rotating brush, the wider the snow removal width.

  However, it was difficult to extend the snow removal width to the length of the rotating brush. This is because it is necessary to tilt the rotating brush to sweep the snow picked up by the rotating brush to the side of the rotating brush, but if the rotating brush is tilted greatly in order to improve the ability to sweep the snow, This is because there is a conflicting situation in which the width becomes narrower. In addition, when the inclination angle of the rotating brush is decreased in order to increase the snow removal width, the ability and efficiency of sweeping the snow of the rotating brush are remarkably deteriorated.

  The present invention focuses on the above-mentioned problems, and an object of the present invention is to provide a traveling type snowplow having an increased ability to sweep the snow scraped up by the rotating brush to the side.

The invention according to claim 1 is provided on the traveling vehicle body, and rotates to scrape the snow on the road surface forward and sweep it sideways, and to sweep air along the front surface of the rotating brush. A sweeping nozzle body having a jet nozzle opening for spraying snow in the sweeping direction, which is blown out toward the side, and being swept forward by the rotating brush, and disposed on one side of the traveling vehicle body behind the rotating brush. A rear processing nozzle body having an ejection nozzle port for ejecting air from the one side toward the sweeping side; and an air jetted from the ejection nozzle port of the rear processing nozzle body along the road surface. A snowplow characterized by comprising a guide for blowing air .
The invention according to claim 2, blower and a first air passage into the sweeping nozzle body, and a second blowing path to the backward processing nozzle body, said first air passage and the second The snowplow according to claim 1 , further comprising an air passage switching device capable of selecting either or one of the air passages and connecting to the air blower.

  ADVANTAGE OF THE INVENTION According to this invention, the capability to sweep away the snow scraped up with the rotating brush to a side increases, and it can remove snow efficiently. The consumption of the rotating brush can be reduced. Also, the need to increase the sweeping angle by increasing the tilt angle of the rotating brush is reduced, and if the snow removal width is the same, the length of the rotating brush can be shortened. The width can be increased. For this reason, it is possible to reduce the weight of the machine and to make it compact.

Further, in the present invention , since the rear processing nozzle body is arranged at the rear position of the rotating brush and the air is blown out toward the sweeping side, after the sweeping process is performed by the rotating brush, it temporarily remains on the road surface. than its snow areas it is possible to gather jetted snow to the side of the vehicle body can be skipped Spray snow to the side way.

  A towed snowplow according to an embodiment of the present invention will be described with reference to the drawings. The snowplow in this embodiment performs snow removal as an example of cleaning work, and is a brush type snowplow of the type that is towed by a self-propelled towing vehicle such as a snow plow type snowplow. FIG. 1 (A) is a plan view of the snowplow, FIG. 1 (B) is a side view of the snowplow, and FIG. 2 is a view of arrow A shown in FIG. 1 (A). FIG.

  The snowplow 1 according to this embodiment includes an equipment body 4 equipped with a work engine 2, a blower 3, and the like, and a work part body frame 6 equipped with a rotating brush 5. The working unit body frame 6 is connected to the front end of the equipment body 4. Further, a tow arm 7 is connected to the front end of the working unit body frame 6, and the working unit body frame 6 is connected to the rear part of the self-propelled towing vehicle 8 using the tow arm 7. It has become. The tow arm 7 is pivotally supported by the working body frame 6 so as to be able to change its direction from side to side. Further, a connecting link 9 for connecting to the rear portion of the self-propelled towing vehicle 8 is provided at the tip of the towing arm 7.

  As shown in FIG. 1 (A), the working unit body frame 6 includes a pair of left and right frames 6a and 6b. A plurality of horizontal frames 10 are installed on the pair of left and right frames 6a and 6b, and a caster 11 that supports the working body frame 6 is attached to the lower portion of the horizontal frame 10 positioned at the forefront. The caster 11 is pivotally supported so as to be turnable left and right around the same axis 12 as the pulling arm 7 described above. Therefore, the caster 11 guides the working body frame 6 and the equipment body 4 while changing the direction of traveling following the self-propelled towing vehicle 8. The vehicle body 4 is provided with traveling wheels 15.

  As shown in FIGS. 1 (A) and 1 (B), the horizontal frame 10 located at the intermediate portion of the working body frame 6 is provided with a swing bearing 22 that pivotally supports a swing bracket 21. The swivel bracket 21 is swiveled around a vertical axis by a pair of left and right swivel cylinders 29 laid between the horizontal frame 10 positioned in front of the swivel bracket 21 and the swivel bracket 21.

  As shown in FIGS. 1 (A) and 1 (B), the revolving bracket 21 is provided with an elevating bracket 24 so as to be movable up and down. The lifting bracket 24 is lifted and lowered by a lifting drive cylinder 28. Further, a cushion absorber for preventing vibration received from the road surface of the brush holding frame 26 is provided between the revolving bracket 21 and the brush holding frame 26. A brush holding frame 26 and an auxiliary wheel 27 that hold the rotating brush 5 are attached to the lifting bracket 24. Further, a cover 30 is attached to the brush holding frame 26 so as to cover the back portion of the rotating brush 5 from the top.

  As shown in FIG. 1B, the height positions of the lower surface of the rotating brush 5 and the lower surface of the auxiliary wheel 27 correspond to each other, and the height at which the rotating brush 5 contacts the road surface is regulated by the auxiliary wheel 27 and rotated. The brush 5 is always in contact with the road surface F with an appropriate amount of contact. As shown in FIG. 1B, when the lifting bracket 24 is in the raised position, the rotating brush 5 and the auxiliary wheel 27 are retracted from the road surface F. Further, when the lifting bracket 24 is lowered, the rotating brush 5 and the auxiliary wheel 27 are brought into contact with the road surface F (a state indicated by an imaginary line F ′ in FIG. 1B).

  The rotating brush 5 is rotationally driven by a brush rotation driving motor 31 held by a brush holding frame 26. As the brush rotation drive motor 31, for example, a hydraulic motor that can be driven by using the hydraulic pressure by the hydraulic pump 32 mounted on the above-described equipment body 4 is used. Further, the turning cylinder 29 and the lift drive cylinder 28 described above are also driven using the hydraulic pressure from the hydraulic pump 32.

  The turning cylinder 29, the raising / lowering driving cylinder 28, and the brush rotation driving motor 31 are all operated by an operating panel provided in the equipment body 4 or the like or an operating body installed in another place where it can be easily operated. It is possible.

  The blower 3 and the hydraulic pump 32 mounted on the equipment body 4 are driven by the work engine 2. As shown in FIGS. 1A and 1B, the drive shaft 35 of the working engine 2 is connected to a hydraulic pump 32, and is connected to a blower drive shaft 37 via a drive belt 36.

  As shown in FIG. 1 (A), an air duct (air passage) 42 communicating with a rear processing nozzle body 41 via an air passage switching device 40 which will be described later is provided in the air inlet duct 38 of the blower 3 and the above rotation. A hose 43 as an air duct (air blowing path) guided to the brush 5 side is connected. The air passage switching device 40 includes a switching valve 39, and the switching valve 39 is switched by an operating body (not shown).

  Then, by selecting the rotation position of the switching valve 39, the air passage connected to the air inlet duct 38 of the blower 3 can be switched, and the wind speed and air volume of the air fed into the air passage can be adjusted.

  As shown in FIG. 1 (B), the rear processing nozzle body 41 is installed at a lower part on one side of the above-mentioned equipment vehicle body 4, and an ejection nozzle port 45 that opens in the left-right width direction across the vehicle body 4 is provided. Is provided. The amount of opening of the ejection nozzle port 45 is tapered, and is opened in a long and narrow rectangular shape. For this reason, the width | variety is wide in the direction along the road surface F, and the wind speed increases and a strong wind blows off.

  Then, by switching the switching valve 39 described above to the air duct 42 communicating with the rear processing nozzle body 41, the wind blows out from the ejection nozzle port 45 toward the rear road surface F after the snow removal processing by the rotating brush 5.

  The rear processing nozzle body 41 is disposed at the side position of the snowplow 1 on the same side as the ejection nozzle port 52 of the later-described rotating brush nozzle body, and ejects air from the ejection nozzle port 45 toward the other side. A nozzle port 45 is provided.

  Further, as shown in FIG. 3, guides 46 for guiding the wind blown from the jet nozzle port 45 from one side to the other are arranged on the left and right sides in the lower part of the equipment body 4 of the snowplow 1. Yes. The guide 46 is usually made of a member having a U-shaped cross section opened downward, and the guide 46 is installed so as to face the road surface in the vicinity. Then, the wind blown from the jet nozzle opening 45 is guided from one of the guides 46 into the guide 46, and the wind flows along the road surface F and is blown to the side from the other side of the guide 46. .

  On the other hand, as shown in FIG. 1A, the hose 43 as the air duct is guided to one side of the rotating brush 5. In this case, when the rotary brush 5 is tilted, the side end located in front of the traveling direction of the vehicle body is selected and installed so that the tip of the hose 43 is guided to one side thereof. A front nozzle box 51 as a nozzle body is provided at the tip of the hose 43. The front nozzle box 51 is detachably attached to and held by one side wall portion of the brush holding frame 26. Further, the hose 43 and the front nozzle box 51 are not always installed on one fixed side of the rotating brush 5, but can be installed on the selected one side. The positions where the hose 43 and the front nozzle box 51 are installed can be interchanged. Alternatively, the hose 43 and the front nozzle box 51 may be installed on both the left and right sides of the rotating brush 5 so that one of them can be selected.

  As shown in FIG. 2, the front nozzle box 51 is formed with an ejection nozzle port 52 that opens in the vehicle width direction from one side of the body frame 6 in the region immediately before the rotating brush 5. Then, by switching the switching valve 39 described above to the hose 43 side, air is ejected from the ejection nozzle port 52 and the snow brushed forward by the rotating brush 5 is blown away in the sweeping direction.

  Further, as shown in FIG. 2, the front nozzle box 51 is provided with a valve 55 that adjusts the amount of air ejected from the ejection nozzle port 52 and can open and close the ejection nozzle port 52. The valve 55 is operated by an operation lever 56.

  In addition, you may enable it to change suitably the direction of the ejection nozzle port 52 according to a use condition as a structure which can also change the direction of the part of the ejection nozzle port 52. FIG.

  Next, an effect | action at the time of using the snowplow 1 mentioned above is demonstrated. The snowplow 1 is towed by a self-propelled towing vehicle 8 such as a snow plow snowplow, and on the road surface F after removing the snow accumulated on the road surface F by the preceding snow plow snowplow while traveling. Remove the remaining snow.

  That is, as shown in FIG. 1B and FIG. 2, the rotating brush 5 is lowered to a height in contact with the road surface F, and the rotating brush 5 is rotated while the height of the rotating brush 5 is regulated by the auxiliary wheel 27. The rotating brush 5 rotates in a direction to scoop up snow on the road surface F located in front of it. The snow remaining on the road surface F is scraped off by the rotating brush 5, released from the road surface F, scraped up, and sequentially swept to the side following the inclined rotating brush 5.

  Further, air is ejected from the ejection nozzle port 52 located on the side side preceding the inclined rotating brush 5 and the snow brushed forward by the rotating brush 5 is moved to the side following the inclined rotating brush 5. Blow away. Further, even water that is difficult to remove with the rotating brush 5 can be blown sideways by the air blown from the jet nozzle port 52. That is, snow and water are brought to one side of the rotating brush 5 by the synergistic action of the sweeping force of the inclined rotating brush 5 and the wind force. For this reason, even if it lengthens the length of the rotating brush 5 and enlarges a snow removal width | variety, it can fully respond.

  By the way, the sweeping ability by the rotating brush 5 itself increases as the inclination of the rotating brush 5 becomes steeper, but the snow removal width becomes conversely narrower. Further, if the width (length) of the rotating brush 5 is increased in order to increase the snow removal width, the sweeping ability and sweeping speed are reduced.

  However, since the snow blown forward by the rotary brush 5 is blown away by the air blown from the jet nozzle port 52, the snow removal width can be increased, and the sweeping ability and sweeping speed can be increased.

  On the other hand, when it is desired to process snow or the like mixed in the rear road surface F that has been subjected to snow removal by the rotating brush 5, the air supply is switched to the air duct 42 leading to the rear processing nozzle body 41, or the ejection nozzle port 52 and the rear processing nozzle body. The air supply is switched to both 41. As a result, the flow passes along the road surface F from the ejection nozzle port 45 of the rear processing nozzle body 41, flows along the road surface F, and remains slightly on the rear road surface F subjected to snow removal processing by the rotating brush 5 due to the wind. Snow and moisture can be strongly removed from the road surface F.

  Further, as shown in FIG. 3, the wind blown to the side of the vehicle body 1 from the other side of the guide 46 blows off the snow accumulated on the adjacent road surface F ′ to be removed next to the side as much as possible. Reduce the amount of snow on the adjacent road surface F 'to be removed.

  Next, since the amount of snow on the road surface F ′ to be snow-removed can be reduced in advance, the efficiency of the next snow-removing work can be improved and the efficiency of all snow-removing work can be improved. Moreover, sweeping and blowing off at the final stage of snow removal is effectively performed, and finally the snow can be removed cleanly on the road surface.

  In the above-described embodiment, the description has been made on the towed snowplow, but the present invention can also be applied to a self-propelled snowplow.

(A) is a top view of a snowplow, (B) is a side view of the snowplow. The arrow view of A shown in FIG. 1 (A). The perspective view of the use condition of a snowplow.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Snowplow, 5 ... Rotary brush, 6 ... Body frame, 31 ... Brush rotation drive motor, 32 ... Hydraulic pump, 38 ... Air supply duct, 41 ... Rear processing nozzle body, 45 ... Jet nozzle port, 51 ... front nozzle box, 52 ... jet nozzle port, 46 ... guide, F ... road surface, F '... adjacent road surface.

Claims (2)

A rotating brush which is provided on the traveling vehicle body and which sweeps snow on the road surface forward by sweeping and sweeps it to the side by rotation;
A sweeping nozzle body having an ejection nozzle port for ejecting air toward the sweeping side along the front surface of the rotating brush, and blowing the snow swept forward by the rotating brush in the sweeping direction;
A rear processing nozzle body disposed on one side of the traveling vehicle body behind the rotating brush and having an ejection nozzle port that ejects air from the one side toward the sweeping side;
A blowing guide for guiding the air ejected from the ejection nozzle port of the rear processing nozzle body to the sweeping side along the road surface;
A snowplow characterized by comprising: A blower, a first air passage into the sweeping nozzle body, and a second blowing path to the backward processing nozzle body, both or one of the first blowing path and a second blowing path The snowplow according to claim 1 , further comprising a blower path switching device that can be selected and connected to the blower.

Images