JP2006193953A - Snowplow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in a traveling drive mechanism of a conventional snowplow wherein since its structure is so formed that an output from an engine is branched into two systems, the structure of the mechanism itself is complicated, and therefore, the weight of the mechanism itself becomes large, and since the number of parts is large, manufacturing cost is increased, and also though some of the snowplows are of manual pushing types in each of which a traveling drive mechanism is eliminated to lower the weight and manufacturing cost of the snowplow, work efficiency may be lowered since labor for moving the snowplow to a worker is increased. <P>SOLUTION: In this snowplow, a snow removal part 11 is disposed in front of a frame, an operation control part 14 is disposed at the rear part of the frame, and a rotatable wheel for traveling or a sleigh 71 is disposed at the longitudinal center lower part of the frame. An auxiliary wheel 51 driven by its rotation in an auger housing is installed at the rear lower part of the auger housing 18 of the snow removal part 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hand-push type snow remover configured to drive auxiliary wheels using the power of an auger.

Conventional snow blowers are generally operated by transmitting power from an engine to a travel drive mechanism via a friction plate clutch, gear, HST, or the like.
In many of these cases, the output of the engine is branched into two systems for snow removal (for driving an auger or the like) and for traveling (for driving a wheel or the like) to perform deceleration or forward / reverse switching.
An example of such a snowplow is shown in Patent Document 1 below.
JP 2003-213642 A

By the way, the traveling drive mechanism of the conventional snow remover has a structure in which the output of the engine is branched into two systems as described above, so that the structure of the mechanism itself becomes complicated.
For this reason, there are problems that the weight of the mechanism itself is increased and the manufacturing cost is increased due to the large number of parts.
There are also hand-push type snowplows that eliminate the travel drive mechanism in order to reduce the weight and manufacturing costs of snowplows. There are concerns.
Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a snow remover that is light in weight and inexpensive and that does not reduce work efficiency.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  In claim 1, in the snowplow with a snow removing part disposed at the front part of the fuselage, a driving operation part at the rear part of the fuselage, and a traveling wheel provided on the center lower part of the front and rear of the fuselage, or a cage. An auxiliary wheel driven by rotation in the auger housing is provided at the rear lower part of the auger housing of the snow removal portion.

  According to a second aspect of the present invention, the height of the auxiliary wheel is adjustable.

  According to a third aspect of the present invention, a clutch for turning on and off the power is provided between the auxiliary wheel and the auger shaft of the auger.

  As effects of the present invention, the following effects can be obtained.

  Unlike the conventional configuration in which the output of the engine is branched into two systems for removing snow and traveling, the configuration of claim 1 is simply configured to rotationally drive the auger. Can be simplified, and the weight of the entire snowplow can be reduced, thereby improving operability. Further, during snow removal work, the pushing force in the forward direction can be reduced by turning the auxiliary wheel, and workability can be improved.

  According to the configuration of the second aspect, the height of the auger from the ground can be set to a height desired by the user, and a height setting warp or the like can be omitted.

  According to the configuration of claim 3, for example, when the snowplow is simply moved by hand or during reverse travel, wasteful energy can be prevented from being wasted without rotating the auger, and the steering operation can be easily performed. Is possible.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The following best mode for carrying out the present invention is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.
FIG. 1 is a schematic configuration diagram (side view) of the snowplow of the present invention, FIG. 2 is a schematic configuration diagram (plan view) of the snowplow of the present invention, and FIG. 3 is a schematic configuration diagram of a pawl clutch of an auxiliary wheel 51. is there.

First, the overall configuration of the snowplow 1 will be described below.
In the following, for the sake of convenience, it is assumed that the traveling direction of the snowplow 1 is the front, and the left and right are determined in the traveling direction.
As shown in FIG. 1 or FIG. 2, the snow removal machine 1 includes a snow removal unit 11 disposed at the front of the machine body, a drive unit 12 disposed behind the snow removal unit 11, and a rear of the drive unit 12. And a driving operation unit 14 disposed at the rear of the machine body.

A blower housing 16 of the snow removal unit 11 is connected to the front portion of the drive unit 12, and an auger housing 18 is connected to the front of the blower housing 16.
A blower 17 is provided in the blower housing 16, and the blower 17 is fixed to the middle part of the blower shaft 41.
The auger housing 18 is provided with a scraping auger 19, and an auger shaft 42, which is a rotation axis of the scraping auger 19, is pivotally supported so as to be in the left-right direction of the auger housing 18.

On the upper surface of the blower housing 16, a pipe-like discharge port 16 a is formed so as to be eccentric from one side of the left and right center and project upward. It is fitted so that it can turn freely.
The snow throwing shooter 21 is engaged with a holding mechanism (not shown) on the swivel seat 20 so that the snow throwing shooter 21 can be held at an arbitrary position, and the shooter handle 37 provided on the rear surface of the snow throwing shooter 21 is turned left and right. It is configured to change the snow direction.
In the snow removal portion 11 configured as described above, the snow that has been scraped by the scraping auger 19 in the substantially right and left central direction of the auger housing 18 is splashed upward by the blower 17,
The direction is guided by the snow throwing shooter 21 so that it can be discharged in any direction.
Further, a cap 21a is provided at the upper end of the snow throwing shooter 21 so that the snow throwing distance can be adjusted by turning the shooter handle 37 up and down. Thus, the shooter handle 37 also serves as means for changing the snow throwing direction and the snow throwing distance.

The power transmission configuration of the engine 22 is as follows.
An output pulley 27 is fixed to the output shaft 22 a of the engine 22, and a snow removal input pulley 28 is fixed to the rear end side of the blower shaft 41 that is the input shaft of the snow removal unit 11. The output pulley 27 and the snow removal input pulley 28 are in a vertical positional relationship with each other and are wound around a belt 29. A belt tension type clutch is provided between the output pulley 27 and the snow removal input pulley 28.
On the front end side of the blower shaft 41, an auger gear box 25 for transmitting the power of the blower shaft 41 that is rotationally driven to the auger shaft 42 is provided.
Since it is configured in this way, the output of the engine 22 is transmitted to the snow removal unit 11 side via the two pulleys, the blower shaft 41 and the like, and the blower 17 and the take-in auger 19 can be driven. Become.

Further, the steering handle 32 is provided so as to protrude obliquely upward from the lower side of the engine 22. The shape of the steering handle 32 is substantially U-shaped in a plan view and is formed in a “h” shape in a side view. Also serves as an engine frame.
Further, the steering handle 32 is provided with a snow removal clutch lever 39 so that the power transmission from the engine 22 to the snow removal portion 11 can be turned on and off.
Further, one end of a snow removal clutch wire 39a is connected to the lower end side of the snow removal clutch lever 39, and the other end side is connected to the tension arm of the belt tension clutch. Is being energized.

Also, frames 4 and 4 that protrude rearward are fixedly provided on both side surfaces of the rear portion of the pulley housing 3 that is provided in front of the engine 22 and covers the snow removal input pulley 28.
An axle 5 is pivotally supported at the rear portion of the frame 4, and tire or iron wheels 6, 6 are fixed to both ends of the axle 5. The wheels 6 and 6 are used for traveling, and on the road or the like, the rear portion of the steering handle 32 is pushed downward to lift the snow removal portion 11 so that the operator can push it to travel.
In addition, a flange 71 is provided at a substantially central portion on the left and right sides of the frame 4 and the axle 5.
One end (front end) of the flange 71 is attached below the rear portion of the blower housing 16 so that the angle can be adjusted.
Thus, since the eaves 71 are provided, it is possible to perform snow removal work even if the amount of snow accumulation is large, even if the wheels 6 and 6 are buried in snow and cannot travel.
Further, in the above description, the case where the two wheels 6 and 6 are provided at both ends of the axle 5 has been described. For example, without providing the flange 71, the single wheel 6 is provided at the substantially right and left central portions, and the both sides thereof are provided. It is good also as a structure which provides a collar. Moreover, even if it is the structure which provides only the wheel 6 for weight reduction or cost reduction, the structure which provides only the collar 71 may be sufficient.
This is because by using a single traveling wheel in this way, the steering operation can be performed easily, and the snowplow can be reduced in weight.

<Auxiliary wheel>
The left and right end sides (left side in the case of FIGS. 1 and 2) of the auger shaft 42 protrude, for example, to the outside (left side) of the auger housing 18, and an auxiliary wheel driving pulley 43 is fixed to the protruding portion. One end of the arm 44 is provided through the loose fit.
As another example, the auxiliary wheel driving pulley 43 may be fixed to the auger shaft 42 on the inner side of the auger housing 18 (center side of the machine body). In this case, the arm 44 is also provided on the inner side (center side of the machine body). In order to project the arm 44 to the rear part of the machine body as in the case of FIG. By configuring in this way, the front part of the fuselage can be configured more compactly compared to the case where the auxiliary wheel driving pulley 43 and the arm 44 are provided on the outside side, and resistance such as wind and snow can be reduced. .
On the other hand, the other end side of the arm 44 is provided to be freely fitted by an auxiliary wheel shaft 52 of an auxiliary wheel (or gauge wheel) 51. One side (right side) of the auxiliary wheel shaft 52 is supported by a side support 46 protruding rearward from the right side surface of the auger housing 18, and the auxiliary wheel shaft 52 is disposed in the left-right direction below the blower housing 16.
One end side (left side in the case of FIGS. 1 and 2) of the auxiliary wheel shaft 52 protrudes to the outside (left side) of the auxiliary wheel 51, and an auxiliary wheel side pulley 53 is fixed to the protruding portion.
The auxiliary wheel driving pulley 43 and the auxiliary wheel side pulley 53 are wound around a belt 45. It is also possible to use sprockets and chains instead of pulleys and belts.
Further, in consideration of easy viewing of the drawing, the auxiliary wheel 51 may be supported by the belt case 47 (or chain case) instead of the arm 44 as shown by a two-dot chain line only in FIG. it can.
As described above, the auxiliary wheels 51 and 51 interlocked with the drive of the take-in auger 19 are arranged on the left and right sides of the rear lower portion of the auger housing 18, and the auger shaft 42 is connected via the power transmission means arranged on the left and right sides. Therefore, when the auger shaft 42 is rotationally driven by the operation of the engine 22, the auxiliary wheel 51 is also rotationally driven.
That is, it can be said that the above-described configuration is an example of a configuration in which the auxiliary wheel is driven using the power of the take-up auger 19.
This configuration is different from the conventional configuration in which the output of the engine is branched into two systems for snow removal and traveling, and is simply configured to rotationally drive the auger, thus simplifying the configuration for running the snow removal machine In addition, it is possible to reduce the weight of the snowplow as a whole and to improve operability. Further, when the auxiliary wheel 51 is driven at the time of snow removal work, a forward pressing force is added, and the labor of the snow removal work can be reduced as compared with the work of only manual pushing.

<Height adjustable>
Further, in the above-described configuration, the arm 44 and the side support 46 are merely loosely inserted into the auger shaft 42, so that when the snowplow is used in this state, the scraping auger 19 is grounded to the ground. A problem occurs.
Therefore, the auxiliary wheel 51 is grounded, but the configuration in which the take-up auger 19 is lifted from the ground, that is, the configuration in which the relative height between the auxiliary wheel 51 and the take-up auger 19 is adjustable, The snow removal height can be adjusted. The configuration will be described.
For example, a crescent-shaped fixing member 61 as shown in FIG. 1 is fixed below the both side surfaces of the blower housing 16 with bolts or welding.
A long hole 62 is formed in the fixing member 61. The long hole 62 is, for example, an arc of a concentric circle centered on the auger shaft 42.
Further, on the arm 44, a bolt hole is formed at a position coinciding with the long hole 62 of the fixing member 61 in a state where the arm 44 and the side support 46 are attached to the auger shaft 42, and the arm 44 is fixed using the bolt 63. The long hole 62 of the member 61 is fastened.
With this configuration, it is possible to adjust and fix the angles of the arm 44 and the side support 46 and the body of the snowplow 1 so that the user can set the height of the take-in auger 19 from the ground. It is possible to set the height to be performed.

<Clutch>
By the way, even when trying to change the direction while rotating the scraping auger 19 when changing the snow removal position or the like at the time of snow removal work, a large force is required for the steering operation because the auxiliary wheel 51 is rotating forward. Necessary. If the engine 22 is stopped or the snow removal clutch lever 39 is turned off when the vehicle wants to move backward, the auxiliary wheel 51 cannot be idle when it is interlocked with the scraping auger 19 and is pulled backward as it is. Will also become resistance.
Therefore, by providing an auxiliary wheel clutch 80 on the auxiliary wheel 51 side for turning on and off the power from the take-in auger 19 so that the driving operation unit 14 can perform “on” and “off” operations, The effort to steer and reverse can be reduced. This configuration will be described with reference to FIG. FIG. 3 shows a cross section near the auxiliary wheel 51 as viewed from above.
Here, an example in which the above-described auxiliary wheel side pulley 53 provided with the pulley side pawl 54 is newly used as the auxiliary wheel side pulley 53a and a pawl clutch (also known as a meshing clutch) is employed will be described. A clutch or the like can be used, and is not limited.
A plurality of pulley-side claws 54 are provided on the left and right center side (auxiliary wheel 51 side) surface of the auxiliary wheel-side pulley 53 a, and the auxiliary wheel-side pulley 53 a is provided so as to be loosely fitted to the auxiliary wheel shaft 52.
Further, a sliding body 81 that is spline-fitted to the auxiliary wheel shaft 52 is provided on the inner side of the auxiliary wheel side pulley 53a. On the outer side (auxiliary wheel side pulley 53a side) surface of the sliding body 81, A plurality of receiving claws 82 that mesh with the pulley side claws 54 are provided.
Further, an engagement groove is formed on the outer periphery of the sliding body 81, and a slide fork 83 is fitted into the engagement groove, and the slide fork 83 is connected to operation means provided in the driving operation unit 14 via a wire or the like. Then, by operating the operating means, the sliding body 81 is slid so that the auxiliary wheel clutch 80 can be operated “ON” and “OFF”.
Since it is configured in this way, it is possible to prevent the rotation of the auxiliary wheel 51 from being transmitted to the take-in auger 19 by sliding the sliding body 81 toward the auxiliary wheel 51 side. When the snowplow 1 is moved or when moving backward, the scraping auger 19 is not rotated, so that wasteful energy can be prevented from being wasted.

The schematic block diagram (side view) of the snow remover of this invention. The schematic block diagram (plan view) of the snowplow of the present invention. The schematic block diagram of the nail | claw type | mold clutch of the auxiliary wheel 51. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow remover 6 Wheel 19 Stuck auger 42 Auger shaft 43 Pulley for driving auxiliary wheel 44 Arm 45 Belt 51 Auxiliary wheel 52 Auxiliary wheel shaft 53 Auxiliary wheel side pulley

Claims (3)

In the snow removal machine where the snow removal part is arranged in the front part of the fuselage, the driving operation part is arranged in the rear part of the fuselage, and the traveling wheel provided in the center lower part of the fuselage, or the dredge is arranged,
A snow remover characterized in that an auxiliary wheel driven by rotation in the auger housing is provided at the rear lower portion of the auger housing of the snow removal portion.   The snowplow according to claim 1, wherein the height of the auxiliary wheel is adjustable. The snow remover according to any one of claims 1 and 2, further comprising a clutch for turning power on and off between the auxiliary wheel and an auger shaft of the auger.

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