JP6534207B2 - snowblower - Google Patents

Description

  The present invention relates to a snowplow, and more particularly to a snowplow attached to the rear of a tractor or the like.

Conventionally, as shown in FIG. 5 , a snowblower 100 mounted at the rear of a tractor includes an auger 91 for collecting snow in the central direction and a blower 92 for discharging the snow collected by the auger 91 to the outside through a shooter. The drive force from the PTO of the tractor is transmitted to the drive shaft 93 through the universal joint 81, and the auger 91 and the blower 92 can be rotated to remove snow.

  By the way, when attaching such a snow removal machine 100 to the back of a tractor, if the snow removal machine 100 is brought too close to the tractor side, the angle of the universal joint 81 becomes too large to rotate the drive shaft 93 efficiently. In addition, it may lead to breakage of the joint part. On the other hand, when the snow removal machine 100 is separated too much from the tractor, the weight of the snow removal machine 100 acts on a moment centered on the rear wheels, resulting in a problem that the front wheel of the tractor floats.

  Therefore, the snow removal machine 100 is provided as close as possible to the tractor side as much as possible, and the drive shaft 93 is disposed at the upper side so that the angle of the universal joint 81 can be reduced. A snow removal machine has been proposed in which the snow removal machine is made to rotate (Patent Document 1).

On the other hand, when rotating the auger, the mission part is provided in the central part of the auger to rotate the auger, or as shown in FIG. 5 , the side drive is extended from the mission part provided behind, There is a method (Japanese Patent Application Laid-Open No. 2004-101501) of rotationally driving the auger 91 from the end by rotation of the belt, etc., but in order to open the front part of the blower 92 and discharge more snow, Is more efficient.

Utility model registration No. 31 37977 Unexamined-Japanese-Patent No. 2004-352585

  However, when connecting a snow blower of a side drive type to a tractor, the following problems occur.

That is, in the structure using the side drives, it is necessary to place the transmission part on the end side of the drive shaft 93 of the blower 92, when mounting the universal joint 81 to the drive shaft 93, as shown in FIG. 5, further The universal joint 81 must be connected to the drive shaft 93 projecting from the rear end side of the transmission section.

However, when the universal joint 81 is attached to the drive shaft 93 projecting from the rear end side of the transmission unit in this manner, the snow removal machine 100 and the tractor are separated by a distance δ, and the weight of the snow removal machine 100 floats the front wheel of the tractor. There is a problem of

The present invention has been made in view of the above problems, as well as to be provided close to the drive wheel of the tractors, aims to provide a snow blower you allow a smaller angle of the universal joint I assume.

That is, in order to solve the above-mentioned problems, the present invention solves the above-mentioned problems, a drive shaft which is rotated by external drive, a transmission mechanism which transmits the rotational force of the drive shaft to the blower rotation shaft which rotates the blower , and The transmission unit converts the rotational force of the side drive in different directions to rotate the side drive, transmits the rotational force of the side drive by the transmission unit to the end of the auger, rotates the auger, and collects the rotation by the auger. In the snow removal machine that discharges the snow outside by the blower, the transmission mechanism is disposed closer to the blower than the transmission unit , and the drive shaft is provided above the transmission unit .

According to this structure, since it is possible to couple the universal joint above the drive shaft of the position farther than the transmission portion, and a small angle of the universal joint by connection of a driving shaft provided above, the efficiency While being able to transmit driving force well, it becomes possible to reduce breakage of a joint part. Also, the snowplow can be brought closer to the tractor side.

Further, in such an invention, the transmission unit is provided on the end side of the blower rotation shaft .

According to this structure, it is possible to rotate the side drive by utilizing the rotational force of the Bro Wa Rotation axis, it is possible to simplify the structure by reducing the number of parts.

Further, the end of the drive shaft on the connection side with the universal joint is positioned closer to the auger than the end of the transmission unit.

  According to this structure, the end of the drive shaft connected to the universal joint can be provided at a position away from the PTO, and the snow removal machine can be disposed close to the tractor side.

According to the present invention, the drive shaft that is rotated by external drive, the transmission mechanism that transmits the rotational force of the drive shaft to the blower rotational shaft that rotates the blower, and the rotational force from the drive shaft are different. was converted and a transmission unit for rotating the side drives, the rotational force of the side drive according the transmission unit by transmitting the end of the auger to rotate the auger, the snow collected by the rotation of the auger the blower In the snow removal machine to be discharged to the outside, the transmission mechanism is disposed closer to the blower than the transmission unit , and the drive shaft is provided above the transmission unit. Since the universal joint can be connected, the connection with the drive shaft provided at the upper side enables universal joy The angle of the bets and the smaller portions efficiently driving force can be transmitted, it is possible to reduce the damage to the joint. Also, the snowplow can be brought closer to the tractor side.

The figure which connected the snow removal machine in one embodiment of this invention to the tractor Plane schematic view of the snow blower in the same form Side view of the snow blower in the same form The comparison figure which provided the drive shaft in front of the snow blower and the mission part in the same form Diagram showing a conventional example

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

The snow removal machine 1 according to this embodiment is, as shown in FIG. 1, used by being connected to the rear of a tractor 8 and provided with an auger 21 driven by rotation of a side drive 26. And a blower 3 for striking up the snow collected in the central direction by the augers 21 of the snow collecting unit 2 and discharging the snow from the shooter 4 to the outside. Characteristically, as shown in FIG. 2 and the like, the transmission unit 7 is provided on the rear end side of the blower rotation shaft 31 for rotating the blower 3 to rotate the side drive 26 in the left and right direction. The transmission unit 6 is a transmission unit that transmits the rotational drive from the drive shaft 5 to the blower rotation shaft 31 by connecting the universal joint 81 extending from the PTO of the tractor 8 to the drive shaft 5 and rotating the auger 21 from the side. 7 and the blower 3, and the drive shaft 5 is disposed above the transmission unit 7. As shown in FIG. Hereinafter, the structure of the snow removal machine 1 in the present embodiment will be described in detail. For the sake of explanation, when describing the snow removal machine 1, the traveling direction when the tractor 8 is moved backward is referred to as the forward direction, and the reverse direction is referred to as the backward direction.

  First, as shown in FIG. 2 and the like, the snow collecting unit 2 is configured to collect snow in the central direction by rotating the auger 21 having a symmetrical shape, and a housing 20 for covering the auger 21. (Refer to FIG. 3), an auger rotation shaft 22 rotatably supported on both left and right walls of the housing 20, and a spiral auger 21 attached to the auger rotation shaft 22 so as to be symmetrical left and right It is done. One end side of the auger rotation shaft 22 is rotatably attached to one wall surface of the housing 20 via a bearing, and the other end side is attached to the end protruding from the bearing so that the sprocket 23 can be rotationally driven. It has become. Then, by rotating the sprocket 23 with the chain 24, the auger rotation shaft 22 is rotationally driven from the side, whereby the front portion of the blower 3 is largely opened without providing a transmission portion or the like in the front center portion of the auger 21. I am trying to

  On the other hand, the blower 3 is designed to be able to rotate in a blower case 30 provided behind the central portion of the snow collecting unit 2 and has a plurality of blades 33 erected on the surface of the rotating body 32. The snow collected by the auger 21 can be hit upward by the blades 33 by rotating the rotating body 32 at high speed. The snow struck by the blower 3 is discharged to the outside through the shooter 4.

  The blower 3 and the auger 21 configured as described above can be rotated by the mechanism shown below using the driving force from the PTO of the tractor 8.

  First, as shown in FIG. 3 etc., the mechanism for rotating the blower 3 rotates the drive shaft 5 coupled to the universal joint 81 (see FIG. 1) attached to the PTO of the tractor 8 and the blower 3 A blower rotation shaft 31 and a transmission mechanism 6 for transmitting the rotational force of the drive shaft 5 to the lower blower rotation shaft 31 are configured. When transmitting the rotational force of the drive shaft 5 to the blower rotational shaft 31, the blower rotational shaft 31 is rotated from the drive shaft 5 through a plurality of gears, whereby the rotational force of the drive shaft 5 is converted to the blower rotational shaft. It is made to be transmitted to 31. The drive shaft 5 is provided on the upper portion (upper portion of the blower rotation shaft 31 and the transmission unit 7) near the PTO of the tractor 8 so that the bending angle of the universal joint 81 can be reduced as much as possible. Further, by providing the transmission mechanism 6 adjacent to the blower case 30, the snow removal machine 1 can be made as close as possible to the tractor 8 side. Although the blower rotation shaft 31 is rotated using a plurality of gears as the transmission mechanism 6 here, the rotational force may be transmitted by a sprocket, a chain, a belt or the like.

  On the other hand, as shown in FIG. 2, the mechanism for rotating the auger 21 transmits the rotational force of the blower rotation shaft 31 to the side drive 26 in the left and right direction via the transmission unit 7, and the end of the side drive 26. The auger 21 is rotated by rotating the sprocket 25 provided on the The transmission unit 7 provided on the blower rotation shaft 31 is configured by providing a bevel gear inside, and rotates the blower rotation shaft 31 provided in the front-rear direction in the direction along the rotation shaft of the side drive 26 in the left-right direction. Transform the force. The transmission unit 7 is provided on the rear end side of the blower rotation shaft 31. Thus, the order of “blower 3”, “transmission mechanism 6”, and “mission unit 7” from the front side of the blower rotation shaft 31 It arranges with. As a result, the drive shaft 5 protruding from the transmission mechanism 6 is disposed at a distance from the tractor 8 to reduce the angle of the universal joint 81 and to make the snow removal machine 1 as close to the tractor 8 as possible. There is.

On the other hand, it is a different order to this, "blower 3" from the front side, "the transmission section 7", describing the ratio較図when arranged in the order of "transmission mechanism 6 'in FIG.

  As shown in the upper view of FIG. 4, when the transmission mechanism 6 is provided on the end side of the blower rotation shaft 31, the snow removal machine 1 is separated from the tractor 8 by the distance of the transmission unit 7. On the other hand, if the transmission mechanism 6 is arrange | positioned between the mission | transmission part 7 and the blower 3, as shown to the same figure below, the snow removal machine 1 can be brought close to the tractor 8 side as much as possible.

  Then, the side drive 26 is rotated by the mission unit 7 provided on the rear end side of the blower rotation shaft 31 as described above. A sprocket 25 is provided at the end of the side drive 26 extended in the left-right direction, and a chain 24 is provided between the sprocket 25 and a sprocket 23 provided at the end of the auger rotation shaft 22. The auger 21 is rotated by bridging.

  Next, the operation of the snow removal machine 1 configured as described above will be described.

  First, when the snow removal machine 1 is used, the snow removal machine 1 is attached to the top link or lower link of the tractor 8 and the universal joint 81 is connected between the PTO of the tractor 8 and the drive shaft 5. Then, the snow removal machine 1 is lowered to the ground side, and the tractor 8 is moved backward.

  At this time, the drive shaft 5 of the snow removal machine 1 is provided at the upper position, and the end of the drive shaft 5 is provided at a position away from the PTO. The snow removal machine 1 can be brought close to the side of the tractor 8 and the front wheel of the tractor 8 can not be floated by a moment due to its own weight.

  Under such circumstances, when the tractor 8 is moved backward, the drive force of the PTO is transmitted to the drive shaft 5 via the universal joint 81, and the blower rotation shaft 31 is rotated via the gear of the transmission mechanism 6. Further, the side drive 26 rotates via the transmission unit 7 provided on the rear end side of the blower rotation shaft 31, and the auger 21 rotates via the sprocket 25 and the chain 24 provided at the end.

  Then, the snow collected in the housing 20 is collected in the central direction by the auger 21 by the rotation of the auger 21, and the collected snow is guided into the blower 3 by the reverse travel of the tractor 8. Then, the snow is shot upward by the blades 33 of the blower 3 rotating at high speed, and is discharged to the outside through the shooter 4.

As described above, according to the above-described embodiment, the drive shaft 5 is rotated by external drive, the transmission mechanism 6 for transmitting the rotational force of the drive shaft 5 to the blower rotation shaft 31 for rotating the blower 3, and The transmission unit 7 includes: a transmission unit 7 configured to turn the side drive 26 by rotating the rotational force from the drive shaft 5 in the left-right direction; and transmitting the rotational force of the side drive 26 by the transmission unit 7 to the end of the auger 21 to perform the auger 21. the rotated in the snow blower 1 for discharging the snow collected by the rotation of the auger 21 to the outside by the blower 3, as well as arranged on the blower 3 side from the transmission unit 7 the transmission mechanism 6, the drive shaft 5 the so was provided above the transmission portion 7, by connecting the universal joint 81 above the drive shaft 5 of farther than the transmission unit 7 It can, while reducing the angle of the universal joint 81, it is possible to make the snow blower 1 to the tractor 8 side.

Further, since the transmission unit 7 is provided on the end side of the blower rotation shaft 31, the side drive 26 can be rotated using the rotational force of the blower rotation shaft 31, and the number of parts is reduced. It can be simplified.
Furthermore, since the end of the drive shaft 5 on the connection side with the universal joint 81 is positioned closer to the auger 21 than the end of the transmission unit 7 , the end of the drive shaft 5 connected with the universal joint 81 Can be provided at a position away from the PTO, and the snow removal machine 1 can be disposed close to the tractor 8 side.

  The present invention is not limited to the above embodiment, and can be implemented in various aspects.

  For example, although the snow removal machine 1 attached to the rear of the tractor 8 has been described in the above embodiment, the present invention may be applied to other snow removal machines connected to drive shafts of other vehicle bodies via universal joints. it can.

  Further, in the above embodiment, the chain 24 is stretched around the sprockets 23 provided at the end of the side drive 26 or the auger rotation shaft 22 to transmit the rotational force, but the invention is not limited to this, a plurality of gears The rotational force may be transmitted to the auger rotation shaft 22 using

DESCRIPTION OF SYMBOLS 1 ... Snow removing machine 2 ... Snow collecting part 20 ... Housing 21 ... Auger 22 ... Auger rotating shaft 23 ... Sprocket 24 ... Chain 25 ... Sprocket 26 ... Side Drive 3 ... blower 30 ... blower case 31 ... blower rotation shaft 32 ... rotation body 33 ... blade 4 ... shooter 5 ... drive shaft 6 ... transmission mechanism 7 ... · Mission section 8 · · · Tractor 81 · · · universal joint

Claims (3)

A drive shaft that is rotated by an external drive,
A transmission mechanism for transmitting the rotational force of the drive shaft to a blower rotation shaft that rotates the blower ;
And a transmission unit for rotating the side drives the rotational force is converted into a different direction from the drive shaft,
In the snow removal machine, the rotational force of the side drive by the transmission unit is transmitted to the end of the auger to rotate the auger, and the snow collected by the rotation of the auger is discharged to the outside by the blower.
A snow removal machine, wherein the transmission mechanism is disposed closer to the blower than a transmission unit , and the drive shaft is provided above the transmission unit . The snow removal machine according to claim 1, wherein the transmission unit is provided on an end side of the blower rotation shaft . The snow removal machine according to claim 1, wherein the end of the drive shaft on the side of connection with the universal joint is positioned closer to the auger than the end of the transmission unit.

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