JP2006274569A - Snow covered road surface maintenance device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow covered road surface maintenance device capable of improving work efficiency by shortening a working time for compacting snow on the snow covered road surface. <P>SOLUTION: The snow covered road surface maintenance device 1 is towed by a traction vehicle and equipped with a maintenance unit 4 for maintaining the snow covered road surface 2 flat by compacting snow with a snow compacting surface 21. The maintenance unit 4 is provided with a vibration generating means 23 for vertically vibrating the snow compacting surface 21. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a snowy road surface maintenance device that maintains a snowy road surface, and more particularly to a snowy road surface maintenance device that can improve workability when a snowy road surface is maintained.

  For example, as a device for maintaining a snowy road surface when testing a snow tire on the snow, a device has been proposed for maintaining the snowy road surface by flattening the snow by adjusting the snow surface (see, for example, Patent Document 1). The snowy road surface maintenance device is pulled by a towing vehicle, and the snowy road surface is compressed by the snow pressure surface of the maintenance unit loaded with a weight of a predetermined weight, so that the snowy road surface is hardened to a predetermined hardness and becomes a flat surface suitable for testing. It is to be maintained.

However, the above-described snowy road surface maintenance device has a limited load amount of weights loaded on the maintenance unit, and cannot apply a surface pressure exceeding the load amount to the snowy road surface. Therefore, when the snowy road surface is hardened to a predetermined hardness, it is necessary to reciprocate the snowy road surface maintenance device many times on the snowy road surface and repeatedly perform the snow pressure, which causes a problem that the maintenance work takes time.
Japanese Utility Model Publication No. 62-178609

  An object of the present invention is to provide a snowy road surface maintenance device capable of reducing work time for maintaining a snowy road surface and improving workability.

  The snowy road surface maintenance device of the present invention that achieves the above object is a snowy road surface maintenance device that includes a maintenance unit that is pulled by a tow vehicle and that presses the snowy road surface with a pressured snow surface to maintain it flatly. A vibration generating means is provided to vibrate up and down.

  According to the present invention described above, the surface pressure exceeding the load capacity of the weight can be applied to the snow-covered road surface by the pressure-snow surface by the vibration generated by vibrating the pressure-snow surface of the maintenance unit up and down by the vibration generating means. The gap between the snow particles can be further reduced and consolidated. As a result, when the snowy road surface is hardened to a predetermined hardness, the number of snowy road surface maintenance devices that reciprocate on the snowy road surface can be reduced, so the work time required to compress snow on the snowy road surface can be shortened, It becomes possible to improve workability when the road surface is maintained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows an embodiment of a snowy road surface maintenance device according to the present invention. This snowy road surface maintenance device 1 includes a snow digging unit 3 for digging snow on a snowy road surface 2, and a maintenance for flattening a snowy road surface 2 by compressing snow. A unit 4 is provided.

  As shown in FIGS. 2 and 3, the snow digging unit 3 has a fence main body 6 provided with an accommodating portion 5 for accommodating a weight. On both sides in the width direction of the kite body 6, the kite plates 7 for sliding on the snowy road surface 2 are respectively attached. A traction frame 9 is provided in front of the side wall plates 8 of the heel body 6 so as to be connected to the traction vehicle and towed.

  One end of the first arm 10 is pivotally supported by a pin 11 on a bracket B projecting upward on the upper surface of the front portion of each side wall plate 8, and the first arm 10 is a bracket that can pivot about one end as a fulcrum. B is connected. On the other end side of the first arm 10, mounting holes 12 for fixing a second arm 14 described later are formed at a predetermined interval.

  One end side of the second arm 14 is pivotally supported by a pin 13 at the rear part of the both side wall plates 8, and the second arm 14 is pivotally connected to the side wall plate 8 with one end side as a fulcrum. One mounting hole 16 is formed at the other end of the second arm 14, and a bolt (not shown) is inserted into one of the plurality of mounting holes 12 and the mounting hole 16, and the other end of the second arm 14 is connected to the other arm 14. The other end of the first arm 10 can be detachably fixed with a bolt and a nut.

  A blade 17 for digging up snow on the snowy road surface 2 is extended between one end portions of the second arm 14. A blade edge portion 17 a of the blade 17 protrudes downward from the roof plate 7 and extends into the snowy road surface 2. By changing the position of the other end portion of the second arm 14 attached to the attachment hole 12 of the first arm 10, the angle of the blade edge portion 17 a of the blade 17 with respect to the snowy road surface 2 can be changed. A weight is accommodated in the accommodating portion 5 in order to ensure that the edge portion 17a of the blade 17 bites into the snowy road surface 2.

  A connecting bar 18 for connecting the maintenance unit 4 is provided at each rear end of the side wall plates 8. In addition, a pair of left and right blade-shaped travel aids that extend straight in the front-rear direction perpendicular to the width direction of the maintenance unit 3 and project into the snowy road surface 2 on both sides in the width direction of the bottom surface of the kite body 6. S is projected. By this traveling auxiliary body S, straight traveling performance when towing the snowy road surface maintenance device 1 is ensured.

  As shown in FIG. 4, the maintenance unit 4 includes a unit main body 20 including a stacking unit 19 on which a weight for applying a snow pressure force is loaded. The bottom surface of the unit body 20 is formed on a snow pressure surface 21 for compressing snow on the snowy road surface 2. The snow-capped surface 21 has an arcuate curved shape that protrudes toward the snowy road surface 2 in a cross-sectional shape cut along a plane orthogonal to the width direction of the maintenance unit 4. The rear end portions of the connecting bars 18 are connected to the side wall portions 22 on both sides in the width direction of the unit main body 20.

  The maintenance unit 4 is provided with vibration generating means 23 for vibrating the snow-capped surface 21 up and down. As shown in FIG. 4, the vibration generating means 23 includes a pair of left and right eccentric weights 24 for applying vertical vibrations to the snow-snow surface 21, and an operating means 25 that operates the eccentric weights 24 eccentrically. ing.

  Both eccentric weights 24 are fixed to the left and right (in the width direction) of a rotating shaft 27 that is rotatably disposed between support members 26 that are erected on both side wall portions 22 at a predetermined interval. A sprocket 28 for connecting to the actuating means 25 is fixed at the center of the rotating shaft 27.

  The actuating means 25 has a rotation shaft 31 rotatably supported by a pair of left and right support members 29 projecting rearward from the snow digging unit 3 via a bearing 30, and the snow accumulation road surface 2 is provided at both ends of the rotation shaft 31. A tire 32 that can be grounded is attached to each. A sprocket 33 is fixed at the center of the rotating shaft 31, and an endless chain 34 is wound between the sprocket 33 and a sprocket 28 fixed to the rotating shaft 27. The power transmission between the rotary shafts 27 and 31 may be configured using a pulley and a belt.

  When the snowy road surface maintenance device 1 is pulled by the towing vehicle and travels on the snowy road surface 2, the tire 32 that comes in contact with the snowy road surface 2 rotates, whereby the rotation shaft 31 rotates, and the rotation is sprocket 33, chain 34. The eccentric weight 24 fixed to the rotating shaft 27 is eccentrically rotated by transmitting to the rotating shaft 27 via the sprocket 28. Due to the eccentric rotation, the snow pressure surface 21 of the maintenance unit 4 vibrates up and down. An excitation frequency for applying vibration to the snowy road surface 2 is 1 Hz or more in order to compress the snowy road surface 2 in a flat shape.

  According to the above-described present invention, the surface pressure exceeding the load of the weight is applied to the snowy road surface 2 by the snow pressure surface 21 due to the vibration generated by vibrating the snow pressure surface 21 of the maintenance unit 4 up and down by the vibration generating means 23. Since it can be added, the gap between snow particles can be further reduced and compacted. Accordingly, when the snowy road surface 2 is hardened to a predetermined hardness, the number of times of the snowy road surface maintenance device 1 that reciprocates on the snowy road surface 2 is reduced, so that the work time for compressing snow on the snowy road surface 2 is shortened and the snowy road surface 2 is maintained. Working efficiency can be increased.

  Further, by forming the compressed snow surface 2 in the curved surface shape described above, the entire compressed snow surface 21 does not compress the snow road surface 2 and the convex portion of the compressed snow surface 2 partially compresses snow. Can be increased, whereby the snowy road surface 2 can be more effectively pressed.

  In the present invention, the vibration generating means 23 is not limited to the above-described configuration as long as it can vibrate the snow-snow surface 21 up and down. For example, as shown in FIG. 5, a configuration may be adopted in which a rotating shaft 27 having an eccentric weight 24 fixed to an electric motor 35 via a transmission 36 is coupled, and as shown in FIG. The pendulum 38 is connected to a hydraulic circuit mechanism 41 provided with a hydraulic motor 39 and a hydraulic pressure adjusting mechanism 40 for adjusting the pressure of the pressure oil sent from the hydraulic motor 39, and the pendulum 38 is rotated to move the pressure snow surface 21 up and down. It may be configured to vibrate.

  The transmission 36 and the hydraulic pressure adjustment mechanism 40 shown in FIGS. 5 and 6 function as vibration control means for changing the frequency applied to the snow-snow surface 21 and are manually switched. The snowy road surface 2 can be more effectively pressed and solidified by appropriately setting the frequency that the operator imparts to the pressure snow surface 21 in view of the snow quality.

  In the case of providing the vibration control means, preferably, as shown in FIG. 7, it has a snow quality detection means 42 for detecting the snow quality of the snowy road surface 2, and this snow quality detection means 42 is a processing means for processing a detection signal. 43 and the control means 44 for outputting a control signal to the vibration control means 36 (40) in response to an input signal from the processing means 43, and the vibration control means 36 (40) is connected and detected by the snow quality detection means 42. Based on the snow quality, the vibration control means 36 (40) controls the number of vibrations applied to the pressure snow surface 21 (in the transmission 36, the rotational speed transmitted from the electric motor 35 is increased or decreased, and in the hydraulic adjustment mechanism 40, the hydraulic motor 39 is controlled. (The increase or decrease in the amount of pressure oil sent to the hydraulic circuit 41).

  As the snow quality detection means 42, for example, since the running resistance acting on the snowy road surface maintenance device 1 towed by snow quality is different, snow applied to the snowy road surface maintenance device 1 when towing the snowy road surface 2 is used. A load cell for detecting a load can be preferably exemplified. For example, as shown in FIG. 3, the load cell can be installed at the front end of the traveling auxiliary body S protruding into the snowy road surface 2. For example, when the value detected by the load cell is small, the vibration control means is configured to reduce the frequency applied to the snow-capped surface 21 and to increase the frequency applied to the snow-capped surface 21 when the detected value is large. 36 (40) controls the rotational speed of the eccentric weight 24 or the pendulum 38.

  As shown in FIG. 8, the above-described snow-capped surface 21 is preferably a circle having a radius of curvature r smaller than the radius of curvature R of the snow-capped surface 21 in a cross-sectional shape cut along a plane orthogonal to the width direction of the maintenance unit 4. The arc-shaped protrusions 45 are preferably arranged in the width direction of the maintenance unit 4 and in the front-rear direction orthogonal thereto, and the protrusions 45 are shifted in the width direction between adjacent protrusion rows. By disposing such a row of protrusions, the snow pressure per unit area on the snowy road surface 2 can be increased and the snowy road surface 2 can be more effectively pressed.

  The snow pressure surface 21 is not limited to a curved surface shape as in the above-described embodiment, and may be a flat surface. Even when the snow pressure surface 21 is a flat surface, it is preferable to provide the protrusion 45 described above.

  In the above embodiment, the traveling auxiliary body S is attached to the snow digging unit 3, but may be attached to the maintenance unit 4 instead of or in addition to the snow digging unit 3. It can be provided on at least one side.

  In addition, the travel auxiliary body S is preferably configured so that the depth d of the travel auxiliary body S protruding into the snowy road surface 2 can be changed. For example, as illustrated in FIG. It is preferable to attach it to the kite body 6 so as to be slidable up and down by the slide support member 47, and by adjusting the depth of the traveling auxiliary body S in accordance with the snow quality of the snowy road surface 2, a wide range can be obtained. It can easily cope with snowy conditions.

  The snowy road surface maintenance device of the present invention can be preferably used as a snowy road surface maintenance device for maintaining a snowy road surface particularly when testing a snow tire on the snow. , Any of them can be used.

It is a schematic side view which shows one Embodiment of the snowy road surface maintenance apparatus of this invention. It is a top view which shows an example of a snow digging unit. It is a side view of the snow digging unit of FIG. It is a top view which shows an example of a maintenance unit. It is a top view which shows the other example of the maintenance unit. It is explanatory drawing which shows the other example of a vibration generation means. It is block explanatory drawing of the vibration generation means provided with the vibration control means interlocked with a snow quality detection means. The example which provided the processus | protrusion on the snow-crushing surface is shown, (a) is a bottom view, (b) is bb sectional drawing of (a). FIG. 6 is a cross-sectional explanatory view showing a preferable example of a travel auxiliary body S.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow accumulation road surface maintenance device 2 Snow accumulation road surface 3 Snow digging unit 4 Maintenance unit 17 Blade 18 Connection bar 21 Snow pressure surface 23 Vibration generating means 24 Eccentric weight 36 Transmission (vibration control means)
40 Hydraulic adjustment mechanism (vibration control means)
42 Snow quality detection means 45 Projection S Traveling aid

Claims (7)

  In a snowy road surface maintenance device equipped with a maintenance unit that is towed by a towing vehicle and presses the snowy road surface with a pressured snow surface to maintain it flat, the snowy road surface maintenance device is provided with vibration generating means for vibrating the pressured snow surface up and down. apparatus.   2. The snowy road surface maintenance device according to claim 1, wherein the snow pressure surface has an arcuate curved surface shape that protrudes toward the snowy road surface in a cross-sectional shape cut along a plane orthogonal to the width direction of the maintenance unit.   Arranged in the cross-sectional shape cut in a plane perpendicular to the width direction of the maintenance unit on the snow pressure surface, arc-shaped projections are arranged in the width direction of the maintenance unit and in the front-rear direction perpendicular thereto, and between adjacent projection rows in the front-rear direction The snowy road surface maintenance device according to claim 1 or 2, wherein the protrusions are arranged while being shifted in the width direction.   The snowy road surface maintenance device according to any one of claims 1 to 3, wherein the vibration generating unit includes a vibration control unit that changes a frequency applied to the compressed snow surface.   5. A snow quality detecting means for detecting the snow quality of the snowy road surface, wherein the vibration control means controls the frequency applied to the compressed snow surface based on the snow quality detected by the snow quality detecting means. Snowy road surface maintenance device as described in 1.   The snow road surface maintenance according to any one of claims 1 to 5, further comprising a snow digging unit connected to a towing vehicle and provided with a blade for digging snow on the snow road surface, wherein the maintenance unit is connected to the snow digging unit. apparatus. The travel auxiliary body extending in the front-rear direction perpendicular to the width direction of the maintenance unit and projecting into the snowy road surface is provided on at least one of the snow digging unit and the maintenance unit. The snowy road surface maintenance device according to item 1.

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