JP4382270B2 - Snow throwing chute extender for walking type snow blower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a snow throwing chute extender for a walking type snowplow that can extend and retract a telescopic chute manually with respect to a fixed chute.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is known a walking type snow remover equipped with a snow throwing chute that blows up snow scraped in a snow removing portion by a blower and adjusts the snow throwing direction through the chute. In addition, a technique is also known in which a snow chute is prepared in advance by replacing a short chute and a long chute that can be replaced and replaced as necessary.
[0003]
When using this type of walk-behind snow remover to remove snow inside a vinyl house with only vinyl (struts) with no vinyl attached or outside of a vinyl house with vinyl attached, only vinyl with a frame (posts) In the house, if the length of the snow throwing chute is long, the chute comes into contact with the framework (post), so it is necessary to replace it with a short chute. In addition, when snow is removed from outside the greenhouse (between the greenhouses), snow cannot be thrown beyond the greenhouse unless a long chute is used.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional walking type snowplow, in order to change the snow throwing height of the snow chute, prepare a short chute and a long chute that can be replaced in advance and replace them as necessary. I am trying to use it. For this reason, the extra expense which prepares both a short chute and a long chute, the effort and time for replacing | exchanging a chute were required. On the other hand, some large snowplows of the passenger type have a snow throwing chute double structure and can be expanded and contracted using a hydraulic cylinder or an electric cylinder. It could not be applied to a snowplow.
The present invention has been made to solve the above problems.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
A. In a walk-type snow remover equipped with a snow throwing chute that blows up the snow scraped in the snow removing part with a blower and throws snow through the chute, a fixed chute having a predetermined length is provided on the base end side of the snow throwing chute. On the other hand, a telescopic chute that is slidable within the length range is provided, and a fixing means for fixing and releasing the fixing at an arbitrary position in the telescopic range of the telescopic chute is provided.
[0006]
B. The fixing means is characterized in that a band for tightening the fixed chute and the telescopic chute is tightened with a manual knob screw to fix the telescopic chute to the fixed chute, and the tightening is released so that the telescopic chute can be slid.
[0007]
C. The telescopic chute is characterized in that it can be expanded and contracted steplessly within the length range of the fixed chute.
[0008]
D. The fixed chute and the telescopic chute are characterized in that they are closely attached and overlapped.
[0009]
[Action]
With the above configuration, the snow throwing chute expansion device of the walking snowplow of the present invention performs the following actions.
(1). A. above. With this configuration, the telescopic chute can be expanded and contracted in the range of its length with respect to the fixed chute, and is fixed and released by the fixing means at an arbitrary position in the telescopic range. Different operations can be easily selected.
[0010]
(2). B. above. With this configuration, the operation of fixing and releasing when the telescopic chute is expanded and contracted is performed by a manual knob screw, and the operation is simple. In addition, since only one telescopic chute is required, the cost burden on the user is reduced.
[0011]
(3). C. above. With this configuration, the telescopic chute can be expanded and contracted steplessly, and can be easily and easily adjusted to a desired snow throwing height. In addition, the telescopic chute can be easily stored.
(4). D. above. With this configuration, the fixed chute and the telescopic chute are closely attached to each other so that the fixed chute and the telescopic chute complement each other's strength and can be firmly fixed. The telescopic chute can be configured to be lightweight.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
3 and 4, reference numeral 1 denotes a self-propelled walking type snowplow. The snowplow 1 is equipped with a pair of left and right crawler travel devices 3 below the base 2, and an engine on the base 2. A transmission (transmission mechanism) 5 equipped with a hydraulic continuously variable transmission (HST) (not shown) is mounted on the lower part of the base 2 behind the engine unit 4 and mounted on the upper side thereof. The steering handle 6 and the operation unit 7 are provided. On the front side of the base 2, a snow removal part (auger part) 8 capable of floating and rolling control, and snow that extends upward from the snow removal part 8, is scraped into the snow removal part 8 and blown up by the blower 9. A snow throwing chute 10 for changing the snow throwing direction for throwing, and a snow throwing angle adjusting cylinder 11 for adjusting the snow throwing angle by the snow throwing angle adjusting cylinder 11a above the snow throwing chute 10 are provided. The snow removal work is performed as the aircraft moves forward.
[0013]
As shown in detail in FIGS. 1 (a), 1 (b) and 2, the snow throwing chute 10 has a fixed chute 12 of a predetermined length fixed to the base end side of the snow throwing chute 10, and this fixed chute. A telescopic chute 13 slidable within the length range is closely attached to the outside of 12. The telescopic chute 13 is fixed and released by a fixing means at an arbitrary position in the expansion / contraction range. The fixing means is provided with a pair of upper and lower band guides / reinforcement ribs 14 on the outer side of the lower end of the telescopic chute 13, and the tip is bent between the band guides / reinforcement ribs 14, 14 and locked to the inner end edge of the fixed chute 12. A pair of tightening bands 15, 15 are wound, a manual knob screw 16 is inserted between the base ends of the tightening bands 15, 15 opposed to each other with a predetermined interval, and the tightening band 15 is tightened by tightening the knob screw 16. , 15 to fasten the expansion chute 13 to the fixed chute 12 and loosen the knob screw 16 to release the tightening bands 15 and 15 so that the expansion chute 13 can slide (expand). Yes. A stopper 12 a that prevents the telescopic chute 13 from coming off is provided inside the upper end of the fixed chute 12.
[0014]
Therefore, the telescopic chute 13 can be expanded and contracted steplessly within the length range of the fixed chute 12 by tightening and releasing the tightening bands 15 and 15 with the knob screw 16. Further, the snow throwing direction of the snow throwing chute 10 is adjusted by turning by a turning mechanism provided on the base end side of the fixed chute 12. The snow throwing angle of the snow throwing chute 10 is adjusted by changing the angle of the snow throwing angle adjusting cylinder 11 by the snow throwing angle adjusting cylinder 11a. Here, the expansion / contraction width of the snow throwing chute 10 in this embodiment is 989 cm in height to the tip in the state where the expansion / contraction chute 13 of FIG. 1 (a) and FIG. 3 is most contracted, FIG. In the state where the telescopic chute 13 of FIG. 4 is most extended, the height to the tip is 1298 mm, and the telescopic chute 13 can expand and contract within a range of about 300 mm. Further, it is 53 degrees in the state where the snow throwing angle of the snow throwing angle adjusting cylinder 11 is maximized (the state shown in FIGS. 1, 3 and 4).
[0015]
The rear left and right central part of the snow removal part 8 is supported by the left and right central part of the front end of the base 2 so as to be able to turn left and right, and power is transmitted from the base 2 side to the snow removal part 8 through the rotation support part. Part 8 is driven. A hydraulic cylinder (not shown) is interposed between the rotation support portion and the base 2 in the lateral direction, and the snow removal portion 8 and the snow throwing chute 10 are controlled to rotate left and right (rolling) by the expansion and contraction operation of the hydraulic cylinder. . The expansion / contraction operation of the hydraulic cylinder is performed by switching a solenoid valve (not shown) by a snow removal unit rolling operation lever disposed in the operation unit 7.
[0016]
The expansion / contraction and free switching of the hydraulic cylinder that rotates the snow removal unit 8 left and right is switched between automatic and manual rolling by the automatic / manual switching lever. Then, when the rolling of the snow removal unit 8 is switched to manual, the snow removal unit rolling manual operation lever is tilted in the left-right direction to control the rolling of the snow removal unit 8. Further, even when the rolling control of the snow removal unit 8 is in the automatic horizontal state, manual operation by the snow removal unit rolling control dial is possible. When the manual operation is canceled, the snow removal unit 8 returns to the automatic horizontal state, and the snow removal unit 8 There is provided an automatic horizontal control device capable of performing automatic horizontal control even when the rolling control is controlled to be inclined. These controls are all performed in conjunction with an electronic control circuit.
[0017]
The snow removing portion 8 includes a lower auger 8a and an upper auger 8b, and scrapes the accumulated snow facing each other with the advance of the machine body and collects it from the left and right sides to the center, and a blower 9 provided at the rear of the left and right middle portion of the lower auger 8a. The snow is blown upward and is snowed through a snow throwing chute 10 and a snow throwing angle adjusting cylinder 11. Further, the snow throwing chute 10 rotates the chute rotating part to change the snow throwing direction, adjust the height of the telescopic chute 13, and adjust the vertical angle of the snow throwing angle adjusting cylinder 11 to the snow throwing angle adjusting cylinder 11a. Adjust the snow throwing distance by changing. Grounding sledges (not shown) are provided at both left and right ends of the snow removal unit 7, and when the snow removal unit 7 is automatically rolled, the snow removal unit 7 moves in a grounded or snow-contacted state.
[0018]
The snow turning chute 10 and the snow throwing angle adjusting cylinder 11 are operated by a snow throwing distance / direction adjusting switch provided at the top of the snow removing part lifting / lowering / horizontal turning lever (or the vicinity thereof). Thus, the snow throwing angle adjusting cylinder 11 is actuated when tilted in the left / right direction, and the snow throwing distance is actuated. Each direction is adjusted. The height of the snow throwing chute 10 is adjusted by extending and fixing the telescopic chute 13 steplessly within the length range of the fixed chute 12 by tightening and releasing the tightening bands 15 and 15 with the knob screw 16.
[0019]
The operation unit 7 includes a snow removal clutch that connects and disconnects power to the lower auger 8a, the upper auger 8b, and the blower 9 of the snow removal unit 8, a throttle lever that controls the rotational speed of the engine unit 4, and a transmission from the engine unit 4 to the transmission. There is a travel clutch that connects and disconnects the power to 5 and turns the crawlers 3 and 3 on and off, a speed adjustment lever that switches the rotational speed of the forward / reverse of the fuselage, and the snow removal part at a continuously variable speed, an emergency stop switch It has been. An emergency stop lever is provided below the steering handle 6, and a light 17 is provided above the center of the fuselage.
[0020]
In the walking type snowplow 1 having such a configuration, power from the engine unit 4 is transmitted to the transmission 5, the snow removal unit 8 and the like by operation of various operation devices in the operation unit 7, and two hydraulic cylinders, The chute rotating unit, the snow throwing angle adjusting cylinder 11a and the like are controlled. Then, the crawler 3 is driven and the machine body travels, and snow removal / snowing work is performed by the snow removal portion 8, the snow throwing chute 10 whose height is adjusted, and the snow throwing angle adjustment cylinder 11 whose angle is adjusted. During such snow removal work, the airframe is traveling at a low speed, and the belief turn or the super belief turn is performed at a low speed.
[0021]
【The invention's effect】
As described above, according to the snow throwing chute expansion device of the walking type snowplow of the present invention, the following effects can be obtained.
[0022]
(1). A fixed-length chute is provided on the base end side of the snow throwing chute with a slidable telescopic chute that can be slid within its length range, and fixed at any position within the telescopic chute's telescopic range. Since the means is provided, the telescopic chute can be expanded and contracted in the range of its length with respect to the fixed chute, and it is fixed and released by the fixing means at an arbitrary position in the expansion and contraction range. Operations with different heights can be easily performed. The length of the snow throwing chute in a greenhouse with only a framework (posts) that is not covered with vinyl, or when removing snow outside the greenhouse with vinyl attached, is used in a greenhouse with only frames (posts). By shortening the length, work can be performed without the upper end of the chute coming into contact with the framework (support). Further, when snow removal between the greenhouses is performed outside the vinyl-tipped greenhouse, the snow throwing work beyond the greenhouse can be performed by increasing the length of the snow throwing chute. Therefore, it is not necessary to prepare a short chute and a long chute in advance and replace them, and the cost burden can be reduced.
[0023]
(2). The fixing means is to tighten the fixed chute and the telescopic chute with the manual knob screw to fix the telescopic chute to the fixed chute and release the tightening so that the telescopic chute can slide. The fixing / unfixing operation is easily performed by manually tightening and releasing the knob screw, and the telescopic chute can be easily expanded and contracted. In addition, only one telescopic chute is required, and it is possible to reduce the time and cost burden on the user without the need for troublesome work as in the case of replacing the short chute and the long chute. it can.
[0024]
(3). Since the telescopic chute can be expanded and contracted steplessly within the length range of the fixed chute, the telescopic chute can expand and contract steplessly and can be easily and easily adjusted to a desired snow throwing height. Further, the telescopic chute can be easily stored, and can be easily stored in a hangar with a low ceiling.
[0025]
(4). Since the fixed chute and the telescopic chute are closely attached and overlapped, the fixed chute and the telescopic chute can complement each other and be firmly fixed by closely attaching the fixed chute and the telescopic chute. it can. In addition, there is no snow blowing from the gap between the two chutes, and the fixed chute and the telescopic chute can be made lightweight.
[Brief description of the drawings]
1A and 1B show a snow throwing chute according to the present invention, in which FIG. 1A is a side view of a state in which the telescopic chute is most contracted, and FIG.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a side view of the entire snowplow with the snow throwing chute according to the present invention most contracted.
FIG. 4 is a side view of the entire snowplow in a state where the snow throwing chute according to the present invention is most extended.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Walking type snow remover 2 Base 3 Crawler traveling device 4 Engine part 5 Transmission 6 Steering handle 7 Operation part 8 Snow removal part (auger part)
9 Blower 10 Snow throwing chute 11 Snow throwing angle adjusting cylinder 11a Snow throwing angle adjusting cylinder 12 Fixed chute 12a Stopper 13 Telescopic chute 14 Band guide / reinforcing rib 15 Tightening band 16 Knob screw 17 Light

Claims (1)

In a walking type snow remover equipped with a snow throwing chute (10) that blows up the snow scraped in the snow removing portion by a blower and throws snow through the chute, a predetermined distance is provided on the base end side of the snow throwing chute (10). A fixed chute (12) having a length is fixed, and a telescopic chute (13) slidable within the range of the length of the fixed chute (12) is closely attached to the outside of the fixed chute (12). A pair of upper and lower band guide / reinforcement ribs (14), (14) is provided outside the lower end of the extension chute (13), and the extension chute (13) between the band guide / reinforcement ribs (14), (14) is provided. ) Is wound around a pair of fastening bands (15), (15) which are bent at the front end side and locked to the inner end edge of the fixed chute (12), and the pair of fastening bands (15), (15) ), Given A manual knob screw (16) is inserted between the base ends facing each other with a gap, and by tightening the knob screw (16), the telescopic chute (12) is attached to the fixed chute (12) via the fastening bands (15) and (15). 13) and clamping the clamping slide (stretch release to stretch chute (13) of Nobuneji (16) tightening loosening by tightening band (15)) can and then walking type you characterized in that the Snow throwing chute expansion device for snowplows.

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