JP2016132906A - Snow removal device and snow removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an operator remove snow by advancing a tractor while sitting and viewing forward, without processing or installing a special mechanism on the tractor, thus enhancing operability and workability.SOLUTION: A snow removal device is connected to a tractor T having a connecting part 1 and a PTO shaft 2 in a rear part. A blower 20 for discharging snow and a transmission part 40 are provided in an auger case 14 that covers an auger 10. A forward connecting body 30 is provided that may be connected to the connecting part 1 of the tractor T at a forward position X with the auger 10 exposed in a forward direction of the tractor T. The transmission part 40 includes a connecting shaft 41 connected to a blower shaft 21, and a transmission box 42 disposed at a central part of a main rotary shaft 11 of the auger 10 for transmitting rotation of the connecting shaft 41 to the main rotary shaft 11. A forward connecting part 50 is provided on a side of the transmission box 42, the connecting part being connectable to the PTO shaft 2 through a connecting shaft body 55.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a snow removal device that is one of working machines connected to a tractor, and in particular, a snow removal device that removes snow by obtaining power from a PTO shaft for transmitting engine power provided at the rear of the tractor, and The present invention relates to a snow removal method using this.

In general, as shown in FIG. 7, the tractor T includes a connecting portion 1 for connecting the work implement to the rear portion and a PTO shaft 2 for transmitting engine power to the work implement.
Conventionally, as a snow removal device connected to the tractor T as one of the work machines, for example, utility model registration No. 3137777 (patent document 1), utility model registration No. 2529454 (patent document 2), actual fairness A device described in Japanese Patent Application Laid-Open No. 6-21936 (Patent Document 3) is known. As shown in FIG. 7, the snow removal device Sa includes an auger 100 that rotates and collects snow, and a rotation main shaft 101 of the auger 100 that rotatably supports the horizontal axis that is orthogonal to the rotation main shaft 101 of the auger 100. An auger case 102 that exposes one side in the direction and covers the other side, a blower 104 that is provided in the auger case 102 and that rotates and sucks the snow collected by the auger 100 and sucks it out of the shooter 103; A transmission unit 105 is provided which is connected to the PTO shaft 2 of the tractor T and transmits the rotation of the PTO shaft 2 to the rotation main shaft 101 of the auger 100 and the blower shaft of the blower 104. A connection body 107 connected to the connection portion 1 of the tractor T via a link 106 is provided outside the auger case 102, and a portion corresponding to the blower shaft of the transmission portion 105 is provided on the PTO shaft 2 of the tractor T. There is provided a connecting portion 110 that is connected to each other via a connecting shaft body 108.

  When this snow removal device Sa is connected to the tractor T, the auger 100 exposed from the auger case 102 is arranged at the rear portion of the tractor T so as to be exposed toward the rear of the tractor T, and the tractor T is connected via the link 106. The connecting portion 1 and the connecting body 107 of the auger case 102 are connected, and the PTO shaft 2 and the connecting portion 110 are connected via the connecting shaft body 108. When performing snow removal using the tractor T connected to the snow removal device Sa, the driver moves the tractor T backward while looking backward while facing backward. As a result, the rotation is transmitted from the PTO shaft 2 to the rotation main shaft 101 of the auger 100 and the blower shaft of the blower 104 by the transmission unit 105 via the connecting shaft body 108, snow is collected by the auger 100, and the snow collected by the blower 104 is collected. It is sucked and discharged from the shooter 103.

  Conventionally, as described in, for example, Japanese Utility Model Publication No. 63-19364 (Patent Document 4) and Japanese Patent Application Laid-Open No. 57-104704 (Patent Document 5), the conventional snow removing device is a tractor. It is also used by connecting to the front part of T. As shown in FIG. 8, when the snow removal device Sa is connected to the tractor T, the auger 100 exposed from the auger case 102 is exposed toward the front of the tractor T at the front portion of the tractor T. The connecting portion 112 provided at the front portion of the tractor T and the connecting body 107 of the auger case 102 are connected via the link 111, and the connecting mechanism 113 for taking out the power is attached to the PTO shaft 2, for example. A connecting shaft 114 extending in the longitudinal direction of the vehicle body is connected to the mechanism 113, and the connecting shaft 114 is connected to the connecting portion 110 of the transmission portion 105 through a joint mechanism 115 such as a universal joint. When performing snow removal, the driver advances the tractor T forward while looking forward. Thereby, the rotation is transmitted from the PTO shaft 2 to the rotation main shaft 101 of the auger 100 and the blower shaft of the blower 104 through the connection mechanism 113, the coupling shaft 114, and the joint mechanism 115, and the auger 100 collects snow. Snow collected by the blower 104 is sucked and discharged from the shooter 103.

Utility Model Registration No. 3137777 Utility Model Registration No. 2529454 Japanese Utility Model Publication No. 6-21936 Japanese Utility Model Publication No. 63-19364 JP-A-57-104704

By the way, in the conventional snow removal device Sa, as shown in FIG. 7, when the snow removal is performed by connecting to the rear part of the tractor T, the driver moves the tractor T backward while looking backwards. There is a problem that the workability is poor and the burden on the neck and shoulders is increased, making it difficult to work for a long time and inferior workability.
On the other hand, as shown in FIG. 8, when this conventional snow removal device Sa is connected to the front part of the tractor T to remove snow, the driver moves forward while looking forward and facing forward. Although the operability and workability are improved, the connecting mechanism 113, the connecting shaft 114, and the joint mechanism 115 for connecting the PTO shaft 2 and the connecting portion 110 are separately installed on the tractor T, and the connecting portion 112 is also provided in front of the tractor T. Since it has to be provided separately in the part, there is a problem that the apparatus becomes complicated and the cost increases accordingly.

  The present invention has been made in view of the above-mentioned problems, and without performing special processing or installation of a mechanism on the tractor side, the driver can move forward while looking forward, An object of the present invention is to provide a snow removal device capable of removing snow and improving operability and workability, and a snow removal method using the snow removal device.

In order to achieve the above object, a snow removal device of the present invention includes a rear part of a tractor including a connection part for connecting a work machine to a rear part and a PTO shaft for transmitting engine power to the work machine. A snow removal device connected as one of the work machines to the left and right of the spiral main blade along the width of the tractor. An auger that collects snow toward the center of the rotating main shaft, and rotatably supports both ends of the rotating main shaft of the auger and exposes one side in the horizontal axis direction orthogonal to the rotating main shaft. An auger case that covers the other side, a guide passage that is provided in the auger case and that opens to a portion corresponding to the central portion of the rotation main shaft of the auger and has a suction port and a discharge port for sucking snow, and suction of the guide passage mouth And a blower that sucks and collects concentrated snow from the suction port and discharges it from the discharge port, and is connected to the PTO shaft of the tractor to rotate the PTO shaft and the rotation main shaft and blower of the auger. In a snow removal device comprising a transmission part for transmitting to the blower shaft of
The auger case is provided with a forward-facing connecting body that can be connected to the connecting portion of the tractor at a forward-facing position in which the auger exposed from the auger case is exposed toward the front of the tractor. A connection shaft connected to one end of the blower shaft on one side in the horizontal axis direction orthogonal to the rotation main shaft, and a rotation of the connection shaft provided at the center of the rotation main shaft is relatively transmitted to the rotation main shaft. And a transmission box having a box body that is supported by the auger case and accommodates the transmission mechanism, and the transmission is arranged on one side of the transmission box in the horizontal axis direction perpendicular to the rotation main shaft. A forward-facing connecting portion that can be connected to the PTO shaft via a connecting shaft body in cooperation with the mechanism is provided.

  When this snow removal device is connected to the tractor, the auger exposed from the auger case is placed in the forward position at the rear of the tractor so that it is exposed toward the front of the tractor. The body is connected, and the PTO shaft and the forward coupling portion are coupled via the coupling shaft body. In this case, since the forward connection body and the forward connection portion are used, the connection with the tractor and the connection with the PTO shaft are easily performed. In addition, since it can be connected to the tractor without performing special processing or installation of a mechanism on the tractor side, the cost can be reduced accordingly. Furthermore, since the connecting shaft body is connected to a transmission box provided in the center of the rotation main shaft and the rotation of the PTO shaft is transmitted to the rotation main shaft of the auger and the blower shaft of the blower, the transmission portion need not be provided outside the auger case. Therefore, the apparatus can be made compact.

  And when performing snow removal with the tractor to which this snow removal apparatus is connected, the driver moves forward while looking forward while facing forward. As a result, rotation is transmitted from the PTO shaft to the rotation main shaft of the auger via the forward connection portion and the transmission box of the transmission portion, and rotation is transmitted from the transmission box to the blower shaft of the blower via the connection shaft. Snow is collected and the snow collected by the blower is sucked and discharged. The snow collected by the auger passes under the tractor chassis as the tractor moves forward. Also, some of the snow is stepped on the tractor wheel once, but is concentrated almost without any hindrance to the general capacity of the auger. In this case, the driver moves forward with the tractor facing forward, so that the operability is good, and because it is forward, the workability can be greatly improved without burdening the neck and shoulders.

  And, if necessary, the forward connecting portion is configured to include a linkage shaft that is linked to the transmission mechanism in the transmission box and that is connected to the connecting shaft body at the tip, and the linkage shaft is supported by the auger case. It is set as the structure supported by the bearing member supported via this. Since the linkage shaft is provided, the connecting shaft body can be connected at a position separated from the auger, and accordingly, the interference of the connecting shaft body to the auger can be prevented.

  If necessary, the transmission mechanism of the transmission box includes a main bevel gear provided at an end of the connection shaft and a bevel gear that meshes with the main bevel gear and transmits the rotation to the rotary main shaft. And the connecting shaft is connected to the connecting shaft. Since the bevel gear mechanism is used, the transmission box can be reduced in size, and interference with the blade of the auger can be reliably avoided.

  Further, if necessary, the connecting portion of the tractor is provided on the upper, left and right portions of the PTO shaft, and the forward connecting body is constituted by a frame projecting from the auger case to the auger side, It is set as the structure which provided the attachment part of the link corresponding to each said connection part in the connection body. Since the forward connection body is composed of a frame, the structure can be simplified.

  Further, if necessary, the auger case is provided with a rearward connection body that can be connected to the connecting portion of the tractor at a rearward position in which the auger exposed from the auger case is exposed toward the rear of the tractor, The transmission portion is provided with a rearward connection portion that can be connected to the PTO shaft via a connection shaft body at the rearward position. As a result, the auger exposed from the auger case can be connected in a rearward position where the auger is exposed to the rear of the tractor. The snow can be removed by moving the tractor backward. Therefore, it is possible to select a method for removing snow in the rearward position as in the past according to the depth of snow, the environment of the place to remove snow, etc., making it reversible and increasing versatility accordingly.

  In this case, the rearward connecting portion is provided at the other end portion on the other side of the blower shaft in the horizontal axis direction orthogonal to the rotation main shaft, as necessary. The connection of the PTO shaft through the connecting shaft body can be facilitated.

  Further, if necessary, a scraper plate is provided which is attached to the front portion of the tractor and scrapes snow in front of the front wheel of the tractor toward the center side in the vehicle width direction of the tractor when the tractor moves forward. Since the snow that is about to be stepped on by the wheels of the tractor is brought closer to the center side in the vehicle width direction of the tractor by the scraping plate, it is possible to reliably collect the snow by the auger.

  In order to achieve the above object, the snow removal method of the present invention provides a tractor having a connecting part for connecting a work machine to the rear part and a PTO shaft for transmitting engine power to the work machine. In the snow removal method for removing snow by connecting a snow removal device as one of the work machines to the rear portion, the snow removal device is used and the auger exposed from the auger case at the rear portion of the tractor is used as the snow removal device. The PTO shaft is connected to the transmission portion via a connecting shaft body so as to be exposed toward the front of the tractor, and in this state, the snow removal device removes snow while moving the tractor forward. It is configured. Has the same effects and effects as above.

  According to the present invention, it is possible to connect to the tractor without performing special processing or installation of a mechanism on the tractor side, so that the cost can be reduced accordingly. In addition, when removing snow with a tractor, the driver can move forward while looking forward and looking forward, so it is easy to operate, and because it faces forward, there is no burden on the neck and shoulders. Workability can be greatly improved. Furthermore, since the connecting shaft body is connected to a transmission box provided in the center of the rotation main shaft and the rotation of the PTO shaft is transmitted to the rotation main shaft of the auger and the blower shaft of the blower, the transmission portion need not be provided outside the auger case. Therefore, the apparatus can be made compact.

It is a figure which shows the snow removal apparatus which concerns on embodiment of this invention in the state connected to the tractor in the forward position. It is a top view which shows the effect | action of the snow removal apparatus which concerns on embodiment of this invention. It is a disassembled perspective view which shows the snow removal apparatus which concerns on embodiment of this invention in relation to the connection part of a tractor. It is a perspective view which shows the structure of the transmission box of the snow removal apparatus which concerns on embodiment of this invention. It is side surface partially notched sectional drawing which shows the snow removal apparatus which concerns on embodiment of this invention. It is a figure which shows the snow removal apparatus which concerns on embodiment of this invention in the state connected to the tractor in the backward position. It is a figure which shows the conventional snow removal apparatus in the state connected to the tractor. It is a figure which shows another example of a connection to the tractor of the conventional snow removal apparatus.

Hereinafter, a snow removal device and a snow removal method according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as the above.
As shown in FIGS. 1 to 6, the chassis 3 of the tractor T to which the snow removal device S according to the embodiment is connected is connected to the rear portion of the chassis 1 via the link 4 and the working machine. And a PTO shaft 2 having a tip formed by a spline shaft for transmitting engine power. The connection part 1 of the tractor T is provided in three places, an upper part, a left part, and a right part of the PTO shaft 2. Reference numeral 5 is a seat, 6 is a front wheel, and 7 is a rear wheel. The snow removal device S according to the embodiment is connected to the rear portion of the tractor T as one of the work machines.

  Specifically, the snow removal device S according to the embodiment includes an auger 10 and an auger case 14 covering the auger 10. The auger 10 includes a rotating main shaft 11 along the width direction of the tractor T, and a helical one blade 12 and the other blade 13 fixed to the rotating main shaft 11 on the left and right sides of the central portion thereof. Is rotated in one direction around the center of the snow to collect the snow on the central side of the rotating spindle 11. The auger case 14 includes a case main body 15 that rotatably supports both ends of the rotation main shaft 11 of the auger 10 and exposes one side in the horizontal axis direction orthogonal to the rotation main shaft 11 and covers the other side. Further, the auger case 14 is provided with a guide passage 18 having a suction port 16 and a discharge port 17 which open to a portion corresponding to the central portion of the rotation main shaft 11 of the auger 10 and suck snow. A guide passage 18 is formed in the case body 15, and a shooter 19 that discharges snow having a discharge port 17 at the tip is projected.

  A blower 20 that sucks the collected snow from the suction port 16 and discharges it from the discharge port 17 is rotatably provided in the suction port 16 of the guide passage 18 provided in the case body 15. The blower 20 has a blower shaft 21 that is pivotally supported by the case main body 15, and a blade 22 that takes in snow is provided on one end portion 25 side. Further, the other end 23 on the other side of the blower shaft 21 in the horizontal axis direction orthogonal to the rotation main shaft 11 protrudes to the outside, and the other end 23 is provided with a further extending portion 24. ing. The extended portion 24 is formed with a backward connecting portion 77 described later.

  Further, the auger case 14 has a forward connecting body 30 that can be connected to the connecting portion 1 of the tractor T at the forward position X where the auger 10 exposed from the auger case 14 is exposed toward the front of the tractor T. Is provided. The forward connection body 30 protrudes toward the auger 10 side of the auger case 14 and is connected to the connection portion 1 of the tractor T via the link 4. Specifically, the forward connection body 30 is configured by a frame protruding from the upper portion of the case main body 15 of the auger case 14 toward the auger 10 side, and is spaced apart at a predetermined interval in the axial direction of the rotary main shaft 11 and one end welded to the case main body 15. L-shaped frame main body 31 fixed at the other end and depending on the other end, upper erection rod 32 laid between the frame main bodies 31, and reinforcing ridges obliquely laid between both ends of the L-shaped frame main body 31 33 and a lower erection rod 34 erected between the frame main bodies 31. The forward connection body 30 is provided with attachment portions 35 of the links 4 corresponding to the connection portions 1 of the tractor T. An attachment portion 35 corresponding to the connection portion 1 on the upper part of the PTO shaft 2 is provided at the center of the upper erection rod 32, and the other end of each frame body 31 is respectively connected to the left and right portions of the PTO shaft 2. Corresponding mounting portions 35 are provided. Since the forward connection body 30 is a frame, the structure can be simplified.

  Further, the auger case 14 is provided with a transmission unit 40 that is connected to the PTO shaft 2 of the tractor T and transmits the rotation of the PTO shaft 2 to the rotation main shaft 11 of the auger 10 and the blower shaft 21 of the blower 20. The transmission unit 40 includes a connection shaft 41 connected to one end portion 25 on one side of the horizontal axis direction orthogonal to the rotation main shaft 11 of the blower shaft 21 and extending to a position at the center of the rotation main shaft 11, and a transmission box 42. It is prepared for. As shown in FIG. 4, the transmission box 42 includes a transmission mechanism 43 provided at the center of the rotation main shaft 11 and capable of relatively transmitting the rotation of the connection shaft 41 to the rotation main shaft 11, and a support arm 44 on the auger case 14. And a box main body 44 that accommodates the transmission mechanism 43. The connection shaft 41 and the rotation main shaft 11 pass through the box body 44, and a connection shaft 51 described later is connected to the connection shaft 41. The transmission mechanism 43 includes a main bevel gear 45 provided at an end of the connection shaft 41 in the box main body 44, and a sub-paragraph provided on the rotary rod 46 that meshes with the main bevel gear 45 and is pivotally supported by the box main body 44. It comprises a gear 47, a main spur gear 48 provided on the rotating rod 46, and a slave spur gear 49 provided on the rotating main shaft 11 and meshing with the main spur gear 48, and reduces the rotation of the connecting shaft 41. And transmitted to the rotating spindle 11.

  Further, on one side of the transmission box 42 in the horizontal axis direction orthogonal to the rotation main shaft 11, a forward connection portion 50 is provided that can be connected to the PTO shaft 2 via the connection shaft body 55 in cooperation with the transmission mechanism 43. . The forward connecting portion 50 is configured to include a linkage shaft 51 that is linked to the transmission mechanism 43 in the transmission box 42 and that is connected to the connecting shaft body 55 at the tip. The linking shaft 51 has a proximal end integrally connected to the connection shaft 41 and a distal end side pivotally supported by a bearing member 53 supported by the auger case 14 via a support member 52. The support member 52 includes a lower erection rod 34 that is erected between the frame main bodies 31.

  As shown in FIGS. 3 and 5, the connecting shaft body 55 includes a rotating shaft 56 and universal joints 57 provided at both ends of the rotating shaft 56. The joint portions 57a and 57b of each universal joint 57 are formed by spline holes. One joint portion 57 a meshes with the spline shaft at the tip of the PTO shaft 2. And the front-end | tip 51a of the cooperation axis | shaft 51 is comprised by the spline axis | shaft which meshes with the spline hole of the other joint part 57b.

  Further, the auger case 14 has a rearward position Y (FIG. 6) in which the auger 10 exposed from the auger case 14 is exposed to the rear of the tractor T and can be connected to the connecting portion 1 of the tractor T. A connecting body 70 is provided. The rearward connection body 70 includes a pair of first arms 72 projecting outward from the outer back surface of the auger case 14, and a pair of second arms 73 extending from the tip portions of the first arms 72 and having tips approaching each other. It is configured. One first arm 72 is reinforced by a reinforcing beam 71. The rearward connection body 70 is provided with attachment portions 75 of the links 4 corresponding to the connection portions 1 of the tractor T. An attachment portion 75 corresponding to the left and right portions of the PTO shaft 2 is provided at the distal end portion of the first arm 72, and the connection portion 1 on the upper portion of the PTO shaft 2 is disposed at the distal end portion of the second arm 73. The attachment part 75 corresponding to is provided.

  Further, the transmission unit 40 is provided with a rearward connection portion 77 that can be connected to the PTO shaft 2 via another connection shaft body 76 (FIG. 6) having a different length formed in the rearward position Y in the same manner as described above. ing. The rearward connecting portion 77 is formed in an extending portion 24 that extends to the other end portion 23 of the blower shaft 21 of the blower 20, and is a spline that meshes with a spline hole in the other joint portion of another connecting shaft body 76. It is composed of shafts.

  Furthermore, the snow removal device S according to the embodiment is attached to the front portion of the tractor T, and when the tractor T moves forward, the snow in front of the front wheel 6 of the tractor T is raked toward the vehicle width direction center side of the tractor T. The scraping plate 78 is provided.

  Therefore, when this snow removal device S is connected to the tractor T, the auger 10 exposed from the auger case 14 is set at the forward position X in the rear portion of the tractor T so as to be exposed toward the front of the tractor T. Each connection portion 1 of T and each attachment portion 35 of the forward connection body 30 of the auger case 14 are connected via a link 4. Further, the PTO shaft 2 and the forward connecting portion 50 are connected by a connecting shaft body 55. In this case, since the forward connection body 30 and the forward connection portion 50 are used, the connection with the tractor T and the connection with the PTO shaft 2 are easily performed. In particular, since the connecting shaft body 55 is connected to the tip of the linkage shaft 51 of the forward connecting portion 50, the connecting shaft body 55 can be connected at a position away from the auger 10, and the connection shaft body 55 is connected to the auger accordingly. Interference can be prevented. Furthermore, since it is possible to connect to the tractor T without performing special processing or installation of a mechanism on the tractor T side, the cost can be reduced accordingly. Furthermore, the connecting shaft body 55 is connected to a transmission box 42 provided at the center of the rotating main shaft 11 to transmit the rotation of the PTO shaft 2 to the rotating main shaft 11 of the auger 10 and the blower shaft 21 of the blower 20. 40 does not have to be provided outside the auger case 14, so that the apparatus can be made compact.

  And when performing snow removal with the tractor T to which this snow removal apparatus S is connected, as shown in FIG. 1, the driver advances the tractor T forward while looking forward. Thereby, the rotation is transmitted from the PTO shaft 2 to the blower shaft 21 of the blower 20 through the connection shaft body 55, the forward connection portion 50 and the transmission portion 40, and further, the rotation is transmitted to the rotation main shaft 11 of the auger 10. Therefore, snow is collected by the auger 10, and the snow collected by the blower 20 is sucked and discharged.

In this case, since the scraping plate 78 is provided at the front portion of the tractor T, the snow in front of the front wheel 6 of the tractor T is scraped toward the center side in the vehicle width direction of the tractor T when the tractor T moves forward. Therefore, the snow that is about to be stepped on the wheels 6 and 7 of the tractor T is brought closer to the center side in the vehicle width direction of the tractor T by the scraping plate 78, so that the snow can be reliably collected by the auger 10. . Since the tractor T moves forward, the snow collected by the auger 10 passes under the chassis 3 of the tractor T and reaches the auger 10.
In this snow removal, the driver of the tractor T moves forward while looking forward, so the operability is good, and since it faces forward, there is no burden on the neck and shoulders, greatly improving workability. Can be improved.

  Next, another method of using the snow removal device S will be described. As shown in FIG. 6, the snow removal device S is placed at a rearward position Y in which the auger 10 exposed from the auger case 14 is exposed toward the rear of the tractor T at the rear part of the tractor T. The portion 1 and each attachment portion 75 of the rearward connecting body 70 of the auger case 14 are connected via the link 4. Further, the PTO shaft 2 and the rearward connecting portion 77 are connected by another connecting shaft body 76. In this case, the rearwardly connecting portion 77 is formed in the extending portion 24 extending to the other end portion 23 of the blower shaft 21 of the blower 20, so that the connection of the PTO shaft 2 via the connecting shaft body 76 is performed. Can be easily.

  In this state, the driver removes snow by moving the tractor T backward while looking backward while facing the back, as in the conventional case. Thereby, rotation is transmitted from the PTO shaft 2 to the blower shaft 21 of the blower 20 through the connecting shaft body 76, the rearward connecting portion 77, and the transmission portion 40, and further, rotation is transmitted to the rotating main shaft 11 of the auger 10. Therefore, snow is collected by the auger 10, and the snow collected by the blower 20 is sucked and discharged. In this case, for example, it is extremely useful in situations where snow is deeply accumulated and it is difficult to move the tractor T forward. That is, according to the snow depth or the environment of the place where snow is removed, a method of removing snow at the rearward position Y as in the prior art can be selected, and versatility can be increased accordingly.

  In the embodiment of the present invention, the forward connecting portion 50 includes the linkage shaft 51, but is not necessarily limited thereto, and the connecting shaft body 55 is configured to be directly connected to the transmission box 42. It can be changed as appropriate. In the embodiment of the present invention, the scraping plate 78 is provided at the front portion of the tractor T. However, the present invention is not necessarily limited to this, and may be omitted. In this case, a part of the snow is stepped on the wheels 6 and 7 of the tractor T once, but is collected with almost no trouble in the general ability of the auger 10.

S snow removal device T tractor 1 connecting portion 2 PTO shaft 4 link 10 auger 11 rotating main shaft 14 auger case 15 case main body 16 suction port 17 outlet 18 guide passage 19 shooter 20 blower 21 blower shaft 23 other end 24 extending portion 25 one end Part X Forward position 30 Forward connection body 31 Frame body 32 Upper installation rod 34 Lower installation rod 35 Mounting portion 40 Transmission portion 41 Connection shaft 42 Transmission box 43 Transmission mechanism 44 Box body 50 Forward connection portion 51 Cooperation shaft 51a Tip 52 Support member (Lower erection rod 34)
53 Bearing member 55 Connecting shaft body 56 Rotating shaft 57 Universal joint Y Backward position 70 Backward connecting body 75 Mounting portion 76 Another connecting shaft body 77 Backward connecting portion 78 Scraping plate

Claims (8)

A snow removal device connected as one of the work machines to a rear part of the tractor having a connection part for connecting the work machine to the rear part and a PTO shaft for transmitting engine power to the work machine. ,
The spiral one blade and the other blade are fixed to the left and right, respectively, with the central part of the rotating main shaft along the width direction of the tractor as a boundary, and are rotated in one direction to collect snow toward the central part of the rotating main shaft. An auger, an auger case that rotatably supports both ends of the rotation main shaft of the auger and that exposes one side in the horizontal axis direction orthogonal to the rotation main shaft and covers the other side, and the auger case provided on the auger case. A guide passage having a suction port and a discharge port that opens to a portion corresponding to the central portion of the rotation main shaft and sucks snow, and the concentrated snow that is rotatably provided in the suction port of the guide passage from the suction port. A blower that is sucked and discharged from the discharge port, and a transmission unit that is connected to the PTO shaft of the tractor and transmits the rotation of the PTO shaft to the rotation main shaft of the auger and the blower shaft of the blower. In the device,
The auger case is provided with a forward connection body that can be connected to the connection portion of the tractor at a forward position where the auger exposed from the auger case is exposed toward the front of the tractor,
The transmission portion is connected to one end portion of the blower shaft on one side in the horizontal axis direction orthogonal to the rotation main shaft, and the rotation of the connection shaft provided at the central portion of the rotation main shaft is rotated. A transmission mechanism having a transmission mechanism that can transmit relatively to the main shaft and a transmission box that is supported by the auger case and has a box body that houses the transmission mechanism; and a horizontal axis direction perpendicular to the rotation main shaft of the transmission box A snow removal device characterized in that a forward-facing connecting portion that is connected to the PTO shaft via a connecting shaft body is provided on one side of the PTO shaft in cooperation with the transmission mechanism.   The forward connecting portion is configured to include a connecting shaft that is linked to the transmission mechanism in the transmission box and that is connected to the connecting shaft body at the tip, and the connecting shaft is supported by the auger case via a support member. The snow removal device according to claim 1, wherein the snow removal device is supported by a bearing member.   The transmission mechanism of the transmission box includes a main bevel gear provided at an end of the connection shaft, and a sub bevel gear that meshes with the main bevel gear and transmits rotation to the rotary main shaft. The snow removal device according to claim 1 or 2, wherein the linkage shaft is connected to a shaft.   The connection part of the tractor is provided on the upper, left and right parts of the PTO shaft, and the forward connection body is constituted by a frame protruding from the auger case to the auger side, and each connection to the forward connection body The snow removal device according to claim 1, further comprising a link attachment portion corresponding to the portion.   The auger case is provided with a rearward connection body that can be connected to the connection part of the tractor at a rearward position in which the auger exposed from the auger case is exposed to the rear of the tractor, The snow removal device according to any one of claims 1 to 4, further comprising a rearward connection portion connectable to the PTO shaft via a connection shaft body in a rearward position.   6. The snow removal device according to claim 5, wherein the rearward connection portion is provided at the other end portion on the other side in the horizontal axis direction orthogonal to the rotation main shaft of the blower shaft.   7. A scraping plate attached to a front portion of the tractor and configured to scrape snow in front of the front wheel of the tractor toward the center side in the vehicle width direction of the tractor when the tractor moves forward. The snow removal device according to any one of the above. A snow removal device as one of the work machines is connected to the rear part of the tractor having a connection part for connecting the work machine to the rear part and a PTO shaft for transmitting engine power to the work machine. In the snow removal method for removing snow,
Using the snow removal device according to any one of claims 1 to 7, the snow removal device is arranged and connected so that the auger exposed from the auger case is exposed toward the front of the tractor at the rear of the tractor. In addition, the snow removal method is characterized in that the PTO shaft is coupled to the transmission portion via a coupling shaft body, and in this state, the snow removal device removes snow while moving the tractor forward.

Images