JP6128582B2 - Walking blade snow blower - Google Patents

Description

  The present invention relates to a traveling unit that moves forward and backward by a traveling crawler belt, and a snow removal machine that includes a snow removal blade at a front portion of the traveling unit and operates a handle provided at the rear to perform a snow removal operation.

  Conventionally, a walking type snowplow having a snow removal blade is disclosed in, for example, Japanese Patent No. 4516189 in which a snow removal blade provided at a front portion of a vehicle body frame moves up and down together with the vehicle body frame when the handle is turned up and down. Prior art 1) “snow remover with snow removal plate” or Japanese Patent No. 45528294 in which only the snow removal blade connected to the handle is turned up and down with the shaft provided on the body frame as a fulcrum when the handle is turned up and down. A “traveling dozer snowplow” described in the publication (prior art 2) is known.

Japanese Patent No. 4516189 (prior art 1) Japanese Patent No. 4528294 (prior art 2)

  When removing snow by pushing the snow with a snow removal blade, it is necessary to push the scraper at the lower end of the snow removal blade against the snow surface while pushing it. For this reason, it is advantageous to make the snow removal blade portion heavy so that a force is applied downward to the scraper portion. In addition, it is advantageous that the crawler belt portion for traveling for pushing snow acting on the snow removal blade portion is heavier in weight in order to sufficiently exert the traction force. However, if the overall weight increases, it becomes disadvantageous for handling during transportation and work. In general, snowplows equipped only with a blade for snow removal are mostly used when there is little snow accumulation compared to large snowplows equipped with an auger or a chute that blows snow into the snow removal part. There has been a demand for a walk-type blade snow remover that is lightweight and compact with good handling and good snow removal performance. The present invention has been made to solve such problems.

In order to solve the above-mentioned problem, a snowplow according to claim 1 is provided with a traveling frame having a traveling unit including a traveling crawler belt, a snow removal blade provided in front of the traveling frame, and a rear of the traveling frame. An operation handle, the operation handle is connected to the blade, and by rotating the operation handle up and down with respect to the traveling frame, the snow removal machine capable of rotating the blade up and down,
The electric motor for driving the traveling crawler belt is provided with a rotational axis to the rotation axis coaxial with the driving wheel of the traveling crawler belt, and, viewed from the right and left traveling crawlers belt width wherein with the center of gravity of the electric motor is arranged to be positioned respectively, have been arranged driven wheel behind the drive wheel is disposed on the front side of the traveling crawler belt within,
The rotation fulcrum for rotating the blade up and down by rotating the operation handle up and down with respect to the traveling frame is the rotation of the driving wheel and the driven wheel disposed before and after the traveling crawler belt in a side view. Located between the axes,
A snowplow characterized in that a center of gravity of a battery that drives the electric motor is positioned between the rotation shafts of the driving wheel and the driven wheel, as viewed from the side, disposed in front and rear of the traveling crawler belt. It is.

  According to the first aspect of the present invention, the electric motor for driving the traveling crawler belt includes the rotational axis coaxial with the rotational axis of the driving wheel of the traveling crawler belt, and is used for traveling in a plan view. By being configured so that the center of gravity of the electric motor is positioned within the width of the crawler belt, the center of gravity of the heavy electric motor acts directly on the grounding portion of the crawler belt, and the driving force is efficiently secured, Since the center of gravity can be kept low, there is little change in the driving force of the left and right crawler belts even when tilted to the left and right, and the handling is improved with little risk of falling.

In addition , the rotation fulcrum for rotating the snow removal blade up and down is located between the rotation shafts of the driving wheel and the driven wheel disposed before and after the traveling crawler belt in a side view, so that the blade portion If the handle part is pushed down when snow accumulates on the crawler belt and the handle part is pushed down, the pushing force and the snow weight of the blade part act equally on the grounding part of the crawler belt, reducing the crawler belt slip and increasing the driving force. In addition, snow can be pushed out and the performance is improved. Even if the whole is configured to be lightweight, since it is configured such that the weight acts on the necessary part when necessary, it is possible to provide a snow remover that is easy to handle and has good performance.

In addition , the driving wheel of the traveling crawler belt is arranged in the front and the driven wheel is arranged in the rear, so that when the snow is pushed forward by the front blade, there is no difference between the slack side of the crawler belt and the slack side. It is hard to come out and the driving force acts on the ground surface effectively.

In addition , since the center of gravity of the battery that drives the electric motor is positioned between the drive wheel and the driven shaft disposed on the front and back of the traveling crawler belt, the weight of the battery is reduced. Acts evenly and effectively on the ground plane to improve driving force.

It is a principal part left view of the walking type blade snow remover of this invention. It is a principal part left view of the state which raised the braid | blade of the walk type | mold blade snow remover of this invention. It is the top view which carried out the partial cross section of the walk type blade snow remover of this invention. It is the front view which cut the drive wheel part. It is the front view which carried out the cross section of the up-and-down rotation fulcrum shaft part of a blade. It is a wiring diagram of the walking blade snowplow of the present invention.

  One embodiment will be described with reference to FIGS.

  FIG. 1 is a left side view of a walking blade snowplow showing an example of the present invention. FIG. 2 is a left side view of the main part in a state where the operation handle 30 on the rear side is pushed down and the blade 20 part located at the front, which is a snow removal working part, is raised. The walking blade snowplow of the present invention is provided with crawler belts 12 on the left and right for running, and drives the crawler belt 12 with the driving wheel 13 and the rear driven wheel 14 positioned at the front part. The front part of the crawler belt 12 is provided with a snow removal blade 20 having a width wider than that of the left and right crawler belts 12, and the rear part is provided with a grip 302 that the operator grips and operates on the right and left sides. A handle 30 is provided. On the rear end side of the operation handle 30, a switching lever 300 that switches the traveling direction back and forth and a traveling lever 301 that turns the traveling on and off are provided in the grip 302 portion.

  The operation handle 30 is fixed to the blade 20 positioned at the front, extends rearwardly through the inner left and right sides of the left and right crawler belts 12, and includes driving wheels 13 and driven wheels 14 disposed in front and rear of the side view crawler belt 12. The rotary frame 11 is provided so as to be pivotable up and down around a rotary fulcrum shaft 110 that is a horizontal axis that is orthogonal to the advancing direction located at a substantially central portion between the rotary shafts. When the grip 302 of the operation handle 30 is gripped and pushed downward, the rotating frame 11 rotates about the rotation fulcrum shaft 110 and the blade 20 fixed to the front portion rotates upward as shown in FIG. Let

  FIG. 3 is a partial cross-sectional plan view of the walking blade snowplow of the present invention. A crawler belt 12 is provided on the left and right of the traveling frame 10 located in the center. A battery 40 for driving the traveling electric motor 60 and a control for controlling the electric motor 60 are provided in the middle of the left and right crawler belts 12. A portion 50 is provided. From the traveling frame 10, drive shafts 13 and driven wheels 14 for driving the clay label 12 are provided extending in the left-right direction. The crawler belt 12 for traveling is wound around a driving wheel 13 provided at the front and a driven wheel 14 at the rear part, and is driven by rotating the electric motor 60 provided at the driving wheel 13 part forward and backward. The operating parts of the left and right crawler belts 12 have a symmetrical structure.

  Between the crawler belt 12 and the traveling frame 10, the rotating frame 11 formed of a round pipe extends in the front-rear direction, and the traveling frame 10 is provided between the driving wheel 13 and the driven wheel 14 in the left-right direction. A rotation fulcrum portion of the rotation frame 11 is inserted into a protruding rotation fulcrum shaft 110, and a blade 20 is fixed to the front portion and an operation handle 30 is fixed to the rear portion.

  FIG. 4 is a front view of the drive wheel 13 section. The drive wheel 13 has a symmetrical structure, and only one side will be described. The electric motor 60 is provided integrally with the drive wheel 13, and the motor case 603 covering the outer periphery of the electric motor 60 is fixed integrally with the drive wheel 13, and the stator 600 and the rotor of the electric motor 60 are installed in the motor case 603. When the electric motor 60 rotates around the rotating shaft 130 of the rotating shaft that protrudes horizontally from the traveling frame 10, the driving wheel 13 also rotates on the same axis. Since the electric motor 60 portion is located substantially within the width of the crawler belt 12, the center of gravity is located within the width of the crawler belt 12, and the weight of the electric motor 60, which is relatively heavy among the components, is directly equal to the crawler belt. Acts on the contact pressure of 12 to improve the driving force. In addition, since the electric motor 60 that is relatively heavy compared to other components is positioned in the drive wheel 13 portion, the center of gravity of the entire blade snowplow can be kept low. A change in the driving force of the belt is small, and there is little risk of falling, and a structure with good handleability can be obtained. Furthermore, since the electric motor 60 is located in the crawler belt 12, the entire configuration can be made compact.

  The traveling crawler belt 12 has a driving wheel 13 forward and a driven wheel 14 disposed behind, and is driven by rotating the electric motor 60 provided on the driving wheel 13 forward and backward. The wheel 13 is rotated and driven. When the snow is pushed by the blade 20, the drive wheel 13 rotates forward toward the front. By rotating forward, the upper surface side which is the grounded surface of the crawler belt 12 is pulled forward. Since the rear driven wheel 14 is in an idle state, the grounding surface side of the crawler belt 12 is also stretched, and the entire grounding surface of the crawler belt 12 uniformly presses the ground to effectively exert a driving force. On the other hand, when the driving wheel is located on the rear side, the upper portion of the crawler belt 12 can be easily slackened, and the ground contact surface portion is less likely to be in a tension state, so that it is difficult to effectively transmit the driving force. Is advantageous in terms of traction performance.

  FIG. 5 is a front view of an essential part of a section of the pivot fulcrum shaft 110 of the pivot frame 11 for pivoting the blade 20 up and down. The pivot fulcrum shaft 110 is horizontally inserted in the lower part of the traveling frame 10 so as to protrude from the traveling frame 10 at both ends in the left-right direction. A moving boss 111 is fitted so as to be rotatable. The battery 40 is located at the center of the traveling frame 10, and the outer periphery thereof is covered and protected by the cover 15 together with the control unit 50. The battery 40 is positioned so that the center of gravity of the battery 40 is located between the rotation shafts of the drive wheel 13 and the driven wheel 14 disposed in front of and behind the traveling crawler belt 12 in a side view. As a result, the weight of the battery 40 effectively acts on the ground contact surface of the crawler belt 12 to improve the driving force.

  The blade 20 located at the front part is a main snow removing plate 202 for extruding snow, a scraper 200 located at the lower end thereof, and the snow pushed out by the snow removing plate 202 located on the left and right side portions. It is comprised with the side plate 201 for not letting it escape. The snow drain plate 202 is concave toward the front and is wider than the outer ends of the left and right crawler belts 12. A scraper 200 is attached to the lower end of the snow discharge plate 202 over the entire width of the snow discharge plate 202. The scraper 200 is inclined at an acute angle from the front end to the rear, and pushes the blade 20 against the snow surface so that the blade 20 moves forward, and guides the snow along the concave surface on the front surface of the snow discharge plate 202 by moving forward. Then, it is raised and sequentially dropped from the upper part curved forward.

  FIG. 6 is a wiring diagram of the walking blade snowplow of the present invention. The control unit 50 is wired with the battery 40, the power switch 303, the switching lever switch 304, the travel lever switch 305, and the left and right electric motors 60, and the control unit 50 operates the electric motor 60 by operating each switch. A panel in the vicinity of the operation handle 30 is provided with a power switch 303 and a switching lever 300 for switching between forward and backward movements. A grip lever 301 is provided on a grip 302 on the left side of the operation handle 30. The travel lever switch 305 provided at the base of 301 is turned on, and the control unit 50 rotates the electric motor 60 to travel. The power switch 303 is for turning on / off the power from the battery 40. When the power switch 303 is turned on, the control unit 50 and the electric motor 60 can be operated. When the switching lever 300 is tilted forward, the electric motor 60 rotates in the forward direction, and when tilted backward, the electric motor 60 rotates in the reverse direction. A switching lever switch 304 is provided at the base of the switching lever 300 and operates in conjunction with it. The control unit 50 is switched.

  In order to perform snow removal work with the walking blade snow remover of the present invention, the power switch 303 provided on the panel in the vicinity of the operation handle 30 is turned ON, the switching lever 300 is switched forward or backward, and the left and right of the operation handle 30 are switched. When the grip 302 is gripped and the travel lever 301 provided on the left grip 302 is further gripped, the control unit 50 rotates the electric motor 60 that drives the drive wheels 13 of the left and right crawler belts 12 to drive the crawler belt 12. Then move the blade snowplow. At the time of movement, the grip 302 part is pushed down a little to raise the front blade 20 from the ground and move it.

  Move to the target snow removal location, switch the switching lever 300 to the forward direction, ground the front blade 20 to the ground, grip the left and right grips 302 and move the traveling lever 301 forward. As the vehicle moves forward, the scraper 200 at the lower end of the waste snow plate 202 bites into the forward snow and sequentially raises the snow along the front surface of the waste snow plate 202 of the blade 20 and sequentially drops it forward from the upper curved portion. When the snow gradually accumulates on the blade 20 part, the operation handle 30 is pushed down to raise the blade 20 and raise the snow forward. Or prodigal. At this time, when the traveling lever 301 is opened, the rotation of the electric motor 60 is stopped and the traveling is stopped. This operation is repeated to perform snow removal work. When snow is accumulated on the blade 20 part and the operation handle 30 is pushed down, the weight of the snow applied to the blade 20 part and the push-down force applied to the operation handle 30 are the rotation fulcrum shafts located between the rotation axes of the drive wheel 13 and the driven wheel 14. It acts on 110 part, presses the ground-contact surface of the crawler belt 12, reduces a slip etc., and improves advancing force.

  The present invention can be applied to a snowplow having a traveling unit such as a crawler belt on the left and right sides and a snow removing unit on the front.

DESCRIPTION OF SYMBOLS 10 Traveling frame 11 Rotating frame 110 Rotating fulcrum shaft 111 Rotating boss 12 Crawler belt 13 Drive wheel 130 Rotating shaft core 14 Driven wheel 15 Cover 20 Blade 200 Scraper 201 Side plate 202 Snow removing plate 30 Operation handle 300 Switching lever 301 Traveling lever 302 Grip 303 Power Switch 304 Switching Lever Switch 305 Traveling Lever Switch 40 Battery 50 Control Unit 60 Electric Motor 600 Stator 601 Rotor 602 Deceleration Unit 603 Motor Case

Claims (1)

A traveling frame having a traveling portion having a traveling crawler belt; a snow removal blade provided in front of the traveling frame; and an operation handle provided at the rear of the traveling frame, the operation handle being connected to the blade. In the snowplow capable of rotating the blade up and down by rotating the operation handle up and down with respect to the traveling frame,
The electric motor for driving the traveling crawler belt is provided with a rotational axis to the rotation axis coaxial with the driving wheel of the traveling crawler belt, and, viewed from the right and left traveling crawlers belt width wherein with the center of gravity of the electric motor is arranged to be positioned respectively, have been arranged driven wheel behind the drive wheel is disposed on the front side of the traveling crawler belt within,
The rotation fulcrum for rotating the blade up and down by rotating the operation handle up and down with respect to the traveling frame is the rotation of the driving wheel and the driven wheel disposed before and after the traveling crawler belt in a side view. Located between the axes,
A snowplow characterized in that a center of gravity of a battery that drives the electric motor is positioned between the rotation shafts of the driving wheel and the driven wheel, as viewed from the side, disposed in front and rear of the traveling crawler belt. .