JP2003147739A - Ground contact body of walk behind type snow removing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ground contact part formed by integrating a sled and a roller on a lower side of an auger housing capable of floating so as to adjust up and down parts thereof. SOLUTION: The auger housing 8a storing augers 8b, 8c shoveling snow is provided in a front part of a machine body and is supported by a hand guide so as to enable rolling and floating, and a ground contact body 12 adjusting a height of snow to be removed is provided on the lower side of the auger housing 8a to constitute a walking type snow removing machine. (1) The ground contact body 12 is formed by integrating the sled 13 and the roller 14. (2) The sled 13 and the roller 14 are constituted in such a way that the roller 14 protrudes downward from a lower face of the sled 13. (3) The sled 13 and the roller 14 are provided so as to adjust up and down parts for the auger housing 8a. Consequently, snow removing work can be performed by utilizing advantages of the sled and the roller and eliminating their disadvantages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grounding body for a walk-type hand-guided snowplow in which a grounding part formed by integrally forming a sled and a roller is provided on the lower side of a rolling and floating auger housing so as to be vertically adjustable. .

[0002]

2. Description of the Related Art Conventionally, an auger housing accommodating an auger for scraping snow is provided in the front part of a machine body, and the auger housing is supported by a hand guide so that it can be rolled and floated. A walk-behind snow remover provided with a grounding body for adjusting the snow is known. And, as the above-mentioned grounding body, "sled" or "roller = wheel" is used.

[0003]

In the above conventional sled, when the ground is asphalt or concrete,
There is a problem in that the road surface is easily damaged, and the sled itself is heavily worn and needs to be replaced when worn, and the frequency is high. Further, in the above-mentioned conventional roller, when the ground is soft, or when two-step cutting work is performed due to a large amount of snow, the surface pressure of the ground (snow) surface with which the roller comes into contact is low. There was a problem that it got stuck and did not rotate (useless). The present invention has been made in order to solve the above-mentioned problems and to utilize the advantages (advantages) of the warp and the roller.

[0004]

In order to achieve the above object, the present invention is characterized by having the following configuration. A. An auger housing accommodating an auger for scraping snow is provided in the front part of the machine body, and this auger housing is supported by a hand guide so as to be capable of rolling and floating, and a grounding body for adjusting the snow removal height is provided under the auger housing. In the provided walk-type snow remover, the grounding body was formed by integrating the sled and the roller.

B. The warp and the roller are configured so that the roller projects downward from the lower surface of the warp.

C. The warp and the roller are provided so as to be vertically adjustable with respect to the auger housing.

[0007]

[Operation] The above A. ~ C. By having the structure of (Claims 1 to 3), the grounding body of the walk-type hand-guided snowplow of the present invention performs the following actions. ． By forming the grounding body by integrating the warp and the roller, when the ground is hard like asphalt or concrete, the roller comes into contact with the ground and moves the auger housing while rotating, and when the ground is soft, In the case of performing double-step snow removal work, even if the roller digs into the ground or snow surface, the sled moves the auger housing in contact with the ground or snow surface.

[0008] By constructing the sled and the roller so that the roller projects downward from the lower surface of the sled, when the ground is hard like asphalt or concrete, first the roller comes into contact with the ground and moves the auger housing while rotating. . In addition, when the ground is soft or when two-step snow removal work is performed, even if the roller digs into the ground or the snow surface, the sled comes in contact with the ground or the snow surface and slides the auger housing.

[0009]. By providing the sled and the roller so as to be adjustable up and down with respect to the auger housing, the sled and the roller (grounding body) can be moved up and down according to the snow condition and the nature of the snow to perform appropriate snow removal work.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3
In FIG. 1, reference numeral 1 is a self-propelled walking type snow remover, and this snow remover 1 includes a pair of left and right crawler traveling devices 3 below a base 2.
Equipped with the engine part 4 and the hydraulic device on the base 2, and at the bottom of the base 2 behind the engine part 4,
A transmission (transmission mechanism) 5 including a hydraulic continuously variable transmission (HST) (not shown) is mounted, and a bar-type steering handle 6 and an operating portion 7 are provided on the upper side thereof. Base 2
Floating and rolling control (hand guide) is possible on the front side of the snow removal part (auger part) 8
And a snow throw chute 10 that extends upward from the snow remover 8 and is thrown into the snow remover 8 and throws up the snow blown up by the blower 9, and a direction in which the snow throwing direction can be changed, and the upper side of the snow throw chute 10. For snow throwing angle adjustment 11
Snow throwing angle adjusting cylinder 11 whose snow throwing angle can be adjusted by a.
Is provided, and snow removal work is performed as the aircraft travels forward.

The rear left and right central portions of the snow removing portion 8 are rotatably supported on the front left and right central portions of the base 2, and the power is transmitted from the base 2 side to the snow removing portion 8 side through the pivotal support portion. Then, the snow removal unit 8 is driven. A hydraulic cylinder (not shown) is laterally interposed between the rotation support portion and the base 2, and the snow removing portion 8 and the snow chute 10 are extended and contracted by the hydraulic cylinder.
Is controlled to rotate left and right (rolling). The expansion / contraction operation of the hydraulic cylinder is performed by switching a solenoid valve (not shown) with a snow removal section rolling operation lever provided in the operation section 7. Further, the rolling can be switched between a control state and a free (automatic) state. For floating of the snow removal unit 8 and the snow throw chute 10,
Similarly, vertical movement control and switching to a free state can be performed.

The expansion / contraction and free switching of the hydraulic cylinder for rotating the snow removing section 8 to the left and right are switched by automatic / manual switching levers, with the rolling of the snow removing section 8 being guided automatically and manually. Then, when the rolling of the snow removal section 8 is switched to manual, the rolling of the snow removal section 8 is controlled by tilting the snow removal section rolling manual operation lever in the left-right direction. Further, even when the rolling control of the snow removal section 8 is set to the automatic horizontal state, the snow removal section rolling control dial can be manually operated. When the manual operation is released, the snow removal section 8 returns to the automatic horizontal state, and the snow removal section 8 is removed. An automatic horizontal control device is provided which enables automatic horizontal control even when the rolling control is controlled to an inclined state. All of these controls are linked to an electronic control circuit.

The snow removing section 8 pivotally supports a lower auger 8b and an upper auger 8c in an auger housing 8a which is open to the front, scrapes opposing snowfall as the machine advances, and collects it from the left and right sides to the center. A blower 9 provided at the rear of the right and left middle portion of the lower auger 8 blows it up to throw snow through a snow throw chute 10 and a snow throw angle adjusting cylinder 11. In addition, the snow throwing chute 10 changes the snow throwing direction by rotating the chute rotating portion, and changes the vertical angle of the snow throwing angle adjusting cylinder 11 by the snow throwing angle adjusting cylinder 11a to adjust the snow throwing distance. Under the right and left ends of the auger housing 8a of the snow removal unit 8, a grounding body 12 according to the present invention is provided to control rolling and floating of the snow removal unit 8 and to bring the grounding or snow contacting state into an automatic state. Then, the snow removal section 8 is moved.

As shown in FIGS. 4 and 5, the grounding body 12 is formed by integrally forming the sled 13 and the roller 14. That is, the sled 13 is formed by bending the lower end portion of the sled support portion 13a, and the roller 14 is formed at the center portion in the width direction thereof.
Is axially supported by protruding 5-10 mm below the lower surface of the sled 13. The rollers 14 are roller support frames 14a, 14a attached to both end portions of the sled support portion 13a.
A rotary shaft 14b provided between the rollers 14 is axially supported at the central portion in the longitudinal direction, and a sled 13 is provided on both sides of the roller 14. Further, the sled support portion 13a is provided with a vertical adjustment mounting hole 13b which is vertically adjustable to be mounted on the auger housing 8a.

The snow throwing chute 10 has a fixed chute having a predetermined length fixed to the base end side thereof, and a telescopic chute slidable within the length range of the fixed chute is closely adhered to the outer side of the fixed chute. Are piled up. This telescopic chute
The fixing means fixes and releases the fixing at any position within the range of expansion and contraction. The fixing means is provided with a pair of upper and lower band guides / reinforcing ribs on the outside of the lower end of the telescopic chute, and a pair of tightening bands which are bent at their tips and locked to the inner edge of the fixing chute are provided between the band guide / reinforcing ribs. Insert a manual knob screw between the base ends of the tightening bands that are wound and opposed at a predetermined interval. By loosening the tightening of, the tightening of the tightening band is released and the expandable chute can slide (expand and contract).

Therefore, the snow throw chute 10 is tightened and released by tightening the tightening band with the knob screw.
It can be expanded and contracted infinitely within the length of the fixed chute. 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. The snow throwing angle of the snow throwing shoot 10 is
The snow throwing angle adjusting cylinder 11 is adjusted by changing the angle by the snow throwing angle adjusting cylinder 11a. Here, the expansion and contraction width of the snow throw chute 10 in this embodiment can be expanded and contracted within a range of approximately 300 mm. Further, it is 53 degrees when the snow throwing angle of the snow throwing angle adjusting cylinder 11 is maximized.

The chute rotating part of the snow throw chute 10 and the snow throwing angle adjusting cylinder 11 are operated by a snow throwing distance provided at the top of the snow removing part elevating / lowering / left / right turning lever of the body (or in the vicinity thereof). The direction adjusting switch operates the snow throwing angle adjusting cylinder 11 when tilted in one of the left and right directions, and the snow throwing distance operates when tilted in the other of the left and right directions. The left and right snow throwing directions are adjusted respectively. The height of the snow throw chute 10 is adjusted by continuously expanding and contracting and fixing the telescopic chute within the length range of the fixed chute by tightening and unfastening the tightening band with the knob screw.

Further, the operation section 7 includes a snow removal clutch for connecting and disconnecting power to the lower auger 8b, the upper auger 8c and the blower 9 of the snow removal section 8, a throttle lever for controlling the rotation speed of the engine section 4, an engine section. 4 A transmission clutch that connects and disconnects power from the transmission 5 to turn on / off the travel by the crawlers 3, 3, a speed adjustment lever that switches the forward / backward movement of the machine body, and the rotation speed of the snow removal section by continuously variable transmission, an emergency stop switch Etc. are provided. An emergency stop lever is provided on the lower side of the control handle 6, and lights are provided above the center of the machine body and on the snow throw chute 10.

In the walk-behind snow remover 1 having such a structure, the power from the engine portion 4 is operated by various operating devices in the operating portion 7 so that the transmission 5 and the snow removing portion 8 can be operated.
And the like, and the two hydraulic cylinders, the chute rotating portion, the snow throwing angle adjusting cylinder 11a, and the like are controlled. Then, the crawler 3 is driven to run the machine body, and the snow removing section 8, the height of the snow throw chute 10, and the angle of the snow throw angle adjusting cylinder 11 perform snow removing and snow throwing work. During such snow removal work, the aircraft is traveling at a low speed, and the turning or super turning is performed at a low speed.

Since the auger housing 8a of the snow removing section 8 is provided with the grounding section 12 having the sled 13 and the roller 14 which are enlarged and shown in FIGS. 4 and 5, the ground is like asphalt or concrete. When it is hard, the roller 14 comes into contact with the ground and rotates to move the auger housing 8a without difficulty, and when the ground is soft or when two-step snow removal work is performed, the roller 14 is Even if the user slides into the snow surface, the sled 13 comes into contact with the ground or the snow surface to move the auger housing 8a without difficulty. When the ground is hard like asphalt or concrete, the roller 14 first contacts the ground and moves the auger housing 8a while rotating. In addition, when the ground is soft or when performing double-step snow removal work,
Even if the roller 14 digs into the ground or snow surface, the sled 13 comes into contact with the ground or snow surface and moves the auger housing 8a while sliding. In addition, the grounding body 12 is vertically moved and adjusted according to the snowfall state and the nature of snow, and appropriate snow removal work is performed.

[0021]

As described above, according to the grounding body of the walk-type hand-guided snow remover of the present invention, by virtue of the constitutions of claims 1 to 3, the following operational effects are exhibited.

.. Since the grounding body is formed by integrating the sled and the roller, when the ground is hard like asphalt or concrete, the roller comes into contact with the ground and moves the auger housing while rotating, and when the ground is soft,
For example, when performing a two-step cutting snow removal work, even if the roller digs into the ground or snow surface, the sled can contact the ground or snow surface and move the auger housing smoothly. Therefore, unlike the conventional case, the road surface is not damaged and the sleds are not abraded to a great extent, and it can be used naturally even on a soft road surface or when performing two-step snow removal work.

.. Since the sled and roller are configured so that the roller projects below the lower surface of the sled, if the ground is hard like asphalt or concrete, first move the auger housing while the roller touches the ground and rotates. You can Also, if the ground is soft,
When performing the snow-cutting work in steps, even if the roller digs into the ground or the snow surface, the sled can contact the ground or the snow surface and slide the auger housing smoothly.

[0024]. Since the sled and rollers are provided so that they can be adjusted up and down with respect to the auger housing, the sled and rollers (grounding body) can be moved up and down according to the snow cover and snow properties
Appropriate snow removal work can be performed.

[Brief description of drawings]

FIG. 1 is a side view of the entire walk-behind snow remover according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of a warp and a roller according to the present invention.

FIG. 5 is a front view showing a cross section of the same portion.

[Explanation of symbols]

1 walking type snow remover 2 base 3 crawler traveling device 4 engine section 5 transmission 6 steering handle 7 operation section 8 snow removing section (auger section) 8a auger housing 8b lower auger 8c upper auger 9 blower 10 snow throw chute 11 snow throwing angle adjustment Cylinder 11a Snowfall angle adjusting cylinder 12 Grounding portion 13 Sledge 13a Sledge support portion 13b Vertical adjustment mounting hole 14 Roller 14a Roller support frame 14b
Axis of rotation

Claims (3)

[Claims] 1. An auger housing accommodating an auger for scraping snow is provided at a front portion of the machine body, and the auger housing is supported by a hand guide so as to be capable of rolling and floating, and the height of snow removal is adjusted below the auger housing. A walk-behind snow remover provided with a grounding body for carrying out the above, wherein the grounding body is formed by integrally forming a sled and a roller. 2. The grounding body for a walk-type hand-guided snowplow according to claim 1, wherein the warp and the roller are configured such that the roller projects downward from a lower surface of the warp. 3. The grounding body of the walk-type hand-guided snowplow according to claim 1, wherein the warp and the roller are provided so as to be vertically adjustable with respect to the auger housing.