JP2016121491A - Snow remover and snow removal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability and workability by making it possible to remove snow by an operator moving a tractor forward while looking forward, without providing special processing or mechanism on the tractor side.SOLUTION: A snow remover to be connected to a tractor T with a connection unit 1 and a PTO shaft 2 on the rear part includes an auger case 14 that covers an auger 10 while rotatably supporting the auger 10. The auger case 14 has: a blower 20 for discharging snow; a power transmission unit 40 for transmitting rotation to a rotary main shaft 11 of the auger 10 and a blower shaft 21 of the blower 20 when being coupled with the PTO shaft 2; and a forward connection body 30 capable of being connected to the connection unit 1 of the tractor T in a forward position X state in which the auger 10 is arranged to be exposed in the tractor T's front direction. The power transmission unit 40 has a forward coupling unit 45 capable of being coupled with the PTO shaft 2 through a coupling shaft body 41 from the outside of the auger 10 in the forward position X state.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. 9, 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. 9, 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. 10, 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. 9, when performing snow removal by connecting to the rear portion of the tractor T, the driver moves the tractor T backward while looking backward, 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. 10, 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 removing device connected as one of the work machines to the auger that is rotated and collects snow, and a horizontal axis that rotatably supports the rotation main shaft of the auger and is orthogonal to the rotation main shaft of the auger An auger case that exposes one side of the direction and covers the other side, a blower that is provided on the auger case and rotates and discharges the snow collected by the auger, and a PTO shaft of the tractor provided on the auger case. A snow removal device comprising a transmission unit coupled to transmit the rotation of the PTO shaft to the rotation main shaft of the auger and the blower shaft of the blower. A forward connecting body that can be connected to the connecting portion of the tractor at a forward facing position that is disposed so that the auger exposed from the front is exposed toward the front of the tractor, and the transmission portion from the outside of the auger at the forward facing position. A forward connecting portion that can be connected to the PTO shaft via a connecting shaft body 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. Connect the body and connect the PTO shaft and the forward link. 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. Further, since the connecting shaft body is connected to the forward connecting portion from the outside of the auger, it is possible to reliably avoid interference with the blade of the auger. Furthermore, since it can be connected to the tractor without performing any special processing or mechanism installation on the tractor side, the cost can be reduced accordingly.

  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. Thereby, rotation is transmitted from the PTO shaft to the rotation main shaft of the auger and the blower shaft of the blower via the forward connecting portion and the transmission portion, the snow is collected by the auger, 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.

  More specifically, the present invention relates to a tractor having a connecting portion for connecting a work implement to the rear portion and a PTO shaft for transmitting engine power to the work implement. The snow removal device is connected as a screw, and is rotated in one direction by fixing the spiral one blade and the other blade to the rotation main shaft to the left and right with the center of the rotation main shaft along the width direction of the tractor as a boundary. An auger that collects snow in the center of the rotating spindle; an auger case that rotatably supports both ends of the rotating spindle and that exposes one side in the horizontal axis direction perpendicular to the rotating spindle and covers the other side; A guide passage provided in the auger case and opening at a portion corresponding to the center of the rotation main shaft of the auger and having a suction port and a discharge port for sucking snow, and a collection passage rotatably provided in the suction port of the guide passage. A blower that sucks the snow from the suction port and discharges it from the discharge port, and is connected to the PTO shaft of the tractor provided in the auger case so that the rotation of the PTO shaft is connected to the rotation main shaft and the blower of the auger. In the snow removal device having a transmission portion that transmits to the blower shaft, the auger case exposed to the auger case is disposed so as to be exposed toward the front of the tractor. A connectable forward connection body is provided, and the transmission portion is provided with a forward connection portion connectable to the PTO shaft from the outside of the auger via the connection shaft body at the forward position.

  And it is set as the structure which located the said forward connection part in the upper side of the said auger case as needed. Desirably, the upper axis of the auger case and the vertical axis intersecting with the axial direction of the PTO axis are preferable. As a result, the forward connecting portion is positioned on the upper side of the auger case, so that the connection with the PTO shaft can be easily performed and the interference with the blade of the auger can be avoided reliably.

  Further, if necessary, the transmission unit transmits a rotation to the blower shaft of the blower, and a second transmission mechanism transmits the rotation transmitted from the first transmission mechanism to the rotation main shaft of the auger. And the first transmission mechanism is provided between a main rotary shaft having the forward connecting portion at a tip portion, and a rear end portion of the main rotary shaft and a rear end portion of the blower shaft. And a blower shaft secondary transmission mechanism including at least one of a belt transmission mechanism, a chain transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism, and the first transmission mechanism is attached to the outside of the auger case. Yes. Since the forward connecting portion is provided at the tip of the main rotating shaft, the connecting shaft body can be supported by the main rotating shaft, and the support can be made strong and reliable. Moreover, since the first transmission mechanism is attached to the outside of the auger case, it can be made compact.

  Further, if necessary, the second transmission mechanism is connected to the main rotation shaft of the first transmission mechanism with one end connected to the main rotation shaft via the rotation axis direction conversion mechanism to transmit the rotation of the main rotation shaft. And a secondary transmission of the main shaft including at least one of a belt transmission mechanism, a chain transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism provided between the rear end portion of the secondary rotation shaft and the end portion of the rotation main shaft of the auger. The secondary rotating shaft is provided in the upper part of the auger case in parallel with the main spindle of rotation of the auger, and the secondary transmission mechanism of the main spindle is provided along one side wall of the auger case. Since the rotation of the secondary rotating shaft is obtained from the main rotating shaft, the rotation can be reliably transmitted. Further, since the second transmission mechanism can be attached to the upper part and the side part of the auger case, it can be made compact.

  Furthermore, if necessary, the connecting part of the tractor is provided at the upper part, the left part and the right part of the PTO shaft, and the forward connecting body is constituted by a frame protruding 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 forward 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, if necessary, the rearward connecting portion is formed in an extending portion that extends to the rear end portion of the blower shaft of the blower. 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.

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. 1 is a perspective view showing a snow removal device according to an embodiment of the present 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 shown in the state which connected the snow removal apparatus which concerns on another embodiment of this invention to the tractor in the front-facing position. It is a perspective view which shows the snow removal apparatus which concerns on another embodiment of this invention. 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 rotation main shaft 11 along the width direction of the tractor T, and a spiral one blade 12 and the other blade 13 fixed to the rotation main shaft 11 on the left and right sides of the center thereof. It is rotated in one direction around the center and collects snow in the center 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 that open to a portion corresponding to the center 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 body 15, and a blade 22 that takes in snow is provided on the tip side. The rear end portion 23 of the blower shaft 21 protrudes outward, and the rear end portion 23 is provided with an extended portion 24 that extends further. 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 that protrudes from the upper portion of the case body 15 of the auger case 14 toward the auger 10 side, and is spaced apart at a predetermined interval in the direction of the rotation main shaft 11 and one end thereof is welded to the case body 15. An L-shaped frame main body 31 that is fixed and the other end is suspended; an upper erection rod 32 that is laid between the frame main bodies 31; and a reinforcing ridge 33 that is obliquely laid between both ends of the L-shaped frame main body 31. It has. 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 portion 40 is provided with a forward connection portion 45 that can be connected to the PTO shaft 2 from the outside of the auger 10 via the connection shaft body 41 at the forward position X. The connecting shaft body 41 includes a rotating shaft 42 and universal joints 43 provided at both ends of the rotating shaft 42. The joint portions 43a and 43b of each universal joint 43 are formed by spline holes. One joint portion 43 a meshes with the spline shaft at the tip of the PTO shaft 2. The forward connecting portion 45 is positioned on the upper side of the auger case 14. In the embodiment, the forward connecting portion 45 faces substantially the center upper side in the width direction of the auger case 14 and is in the axial direction of the PTO shaft 2. And a vertical axis that intersects the axial direction of the blower shaft 21. Further, the forward connecting portion 45 is formed of a spline shaft that is formed at the tip of a main rotating shaft 51 described later and meshes with a spline hole of the other joint portion 43b.

  The transmission unit 40 includes a first transmission mechanism 50 that transmits rotation to the blower shaft 21 of the blower 20, and a second transmission mechanism 60 that transmits rotation transmitted from the first transmission mechanism 50 to the rotation main shaft 11 of the auger 10. It is prepared for. The first transmission mechanism 50 is attached to the outside of the auger case 14 and includes a main rotating shaft 51 having a forward connecting portion 45 at the tip. A support base 52 is provided substantially outside the center of the auger case 14, and the main rotating shaft 51 is disposed on the upper part of the auger case 14 and the upper part of the support base 52 so that the axis is parallel to the blower shaft 21. A pair of bearing portions 53 provided are rotatably supported. The first transmission mechanism 50 is provided between the rear end portion 51a of the main rotary shaft 51 and the rear end portion 23 of the blower shaft 21, and includes at least a belt transmission mechanism, a chain transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism. A blower shaft secondary transmission mechanism 54 including any of them is provided. In the embodiment, a chain transmission mechanism is employed. The support base 52 is provided with a vertical plate 55 through which the main rotary shaft 51 and the blower shaft 21 can rotate, and a chain transmission mechanism is provided outside the vertical plate 55. A blower shaft secondary transmission mechanism 54 comprising a chain transmission mechanism is wound between a pair of sprockets 56 provided at the rear end portion 51 a of the main rotary shaft 51 and the rear end portion 23 of the blower shaft 21, and the sprocket 56. And an endless chain 57. The main rotating shaft 51 is covered with a first cover 58 fixed to the upper portion of the support base 52 with screws (not shown), and the blower shaft secondary transmission mechanism 54 composed of a chain transmission mechanism is connected to the vertical plate 55 with screws ( It is covered with a second cover 59 which is fastened with a not-shown).

  The second transmission mechanism 60 has one end portion linked to the rear end portion 23 of the blower shaft 21 via a rotation shaft direction conversion mechanism 61 such as a bevel gear, and a rotation shaft 62 to which the rotation of the blower shaft 21 is transmitted. The main shaft secondary transmission mechanism 63 is constituted by, for example, a gear belt transmission mechanism or the like provided between the other end portion of the secondary rotation shaft 62 and the end portion of the rotation main shaft 11 of the auger 10. The sub-rotating shaft is provided on the outer back surface of the auger case 14 so as to be parallel to the rotation main shaft 11 of the auger 10 and covered with a cover 64, and the main shaft secondary transmission mechanism 63 is covered with a cover 65 along one side wall of the auger case 14. Is provided.

  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 is integrally extended with the rear end portion 23 of the blower shaft 21 of the blower 20, and meshes with a spline hole of the other joint portion of another connecting shaft body 76. It consists of spline shafts. The connecting shaft body 76 is connected to the rearward connecting portion 77 through the notch 59 a of the second cover 59.

  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 45 are connected by a connecting shaft body 41. In this case, since the forward connection body 30 and the forward connection portion 45 are used, the connection with the tractor T and the connection with the PTO shaft 2 are easily performed. In particular, since the forward connection portion 45 is provided on the upper side of the center of the auger case 14, the connection is facilitated accordingly. Further, since the connecting shaft body 41 is connected to the forward connecting portion 45 from the outside of the auger 10, it is possible to reliably avoid interference with the blades 12 and 13 of the auger 10. 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.

  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 41, the forward connection portion 45 and the transmission portion 40, and further, the rotation is transmitted to the rotation main shaft 11 of the auger 10. Therefore, the snow is collected by the auger 10, and the snow collected by the blower 20 is sucked and discharged from the shooter 19.

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 that extends to the rear 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, the snow is collected by the auger 10, and the snow collected by the blower 20 is sucked and discharged from the shooter 19. 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.

  7 and 8 show a snow removal device S according to another embodiment of the present invention. The snow removal device S according to another embodiment is configured in substantially the same manner as described above, but differs from the above in the configuration of the second transmission mechanism of the transmission unit 40. The second transmission mechanism 80 is connected to the main rotation shaft 51 of the first transmission mechanism 50 through one end portion of the first transmission mechanism 50 via a rotation axis direction conversion mechanism 81 such as a bevel gear mechanism to transmit the rotation of the main rotation shaft 51. The rotary shaft 82 is provided between the rear end portion of the secondary rotary shaft 82 and the end portion of the rotary main shaft 11 of the auger 10 and includes at least one of a belt transmission mechanism, a chain transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism. The main shaft secondary transmission mechanism 83 is used. In the embodiment, a chain transmission mechanism is employed. The subrotation shaft 82 is pivotally supported on the upper portion of the auger case 14 by a bearing portion 84, and is provided in parallel with the rotation main shaft 11 of the auger 10. The main shaft secondary transmission mechanism 83 is provided along one side wall of the auger case 14. The sub-rotating shaft 82 is provided so as to be covered with a cover (not shown), and the main shaft secondary transmission mechanism 83 is covered with a cover 85. According to the snow removal device S according to this embodiment, since the rotation of the secondary rotation shaft 82 is obtained from the main rotation shaft 51, the rotation can be reliably transmitted. Moreover, since the 2nd transmission mechanism 60 can be attached to the upper part and side part of the auger case 14, the outer back surface side of the auger case 14 is neat, and it can make it compact so much. Other actions and effects are the same as described above.

  In the embodiment of the present invention, the position of the forward connecting portion 45 is provided at the approximate center of the upper portion of the auger case 14, but the present invention is not necessarily limited to this, and may be located at another part. In other words, the forward-facing position X may be set to any position as long as the connecting shaft body 41 is connected from the outside of the auger 10. 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 Connection portion 2 PTO shaft 4 Link 10 Auger 11 Rotating main shaft 14 Auger case 15 Case body 16 Suction port 17 Discharge port 18 Guide passage 19 Shutter 20 Blower 21 Blower shaft 24 Extension portion X Forward position 30 Forward connection Body 35 Mounting portion 40 Transmission portion 41 Connection shaft body 45 Forward connection portion 50 First transmission mechanism 51 Main rotation shaft 52 Support base 54 Blower shaft secondary transmission mechanism (chain transmission mechanism)
60 Second transmission mechanism 61 Rotating shaft direction converting mechanism 62 Subrotating shaft 63 Main shaft secondary transmission mechanism Y Backward position 70 Backward connecting body 75 Mounting portion 76 Connecting shaft body 77 Backward connecting portion 78 Scavenging plate 80 Second transmission mechanism 81 Rotation Axial direction conversion mechanism 82 Subrotation shaft 83 Main shaft secondary transmission mechanism

Claims (10)

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. ,
An auger that is rotated to collect snow, an auger case that rotatably supports the rotation main shaft of the auger and that exposes one side in the horizontal axis direction perpendicular to the rotation main shaft of the auger and covers the other side; A blower provided in the auger case for rotating and discharging the snow collected by the auger, and connected to a PTO shaft of the tractor provided in the auger case to rotate the PTO shaft; In a snow removal device comprising a transmission portion that transmits to a blower shaft of a blower,
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. A snow removal device comprising a forward connecting portion connectable to the PTO shaft from the outside of the auger via a connecting shaft body in a forward position. 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. ,
An auger that collects snow at the center of the rotating main shaft by fixing one blade and the other blade that are spiral to the left and right to the rotating main shaft and rotating in one direction with the center of the rotating main shaft along the width direction of the tractor as a boundary. 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 rotation of the auger provided on the auger case A guide passage having a suction opening and a discharge opening that opens to a portion corresponding to the center of the main shaft and sucks snow, and the snow that is rotatably provided in the suction opening of the guide passage is sucked from the suction opening. A blower to be discharged from the discharge port, and connected to the PTO shaft of the tractor provided in the auger case and transmitting the rotation of the PTO shaft to the rotation main shaft of the auger and the blower shaft of the blower In snow removal device including a that transmission unit,
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. A snow removal device comprising a forward connecting portion connectable to the PTO shaft from the outside of the auger via a connecting shaft body in a forward position.   The snow removal device according to claim 1, wherein the forward connecting portion is positioned above the auger case.   The transmission section includes a first transmission mechanism that transmits rotation to the blower shaft of the blower, and a second transmission mechanism that transmits rotation transmitted from the first transmission mechanism to the rotation main shaft of the auger. The first transmission mechanism is provided between the main rotary shaft having the forward connecting portion at the tip, and the rear end portion of the main rotary shaft and the rear end portion of the blower shaft. 4. A blower shaft secondary transmission mechanism including at least one of a transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism, wherein the first transmission mechanism is attached to the outside of the auger case. The snow removal device described.   The secondary transmission mechanism includes a secondary rotary shaft in which one end of the secondary transmission mechanism is linked to the primary rotary shaft of the first transmission mechanism via a rotary axis direction conversion mechanism and the rotation of the primary rotary shaft is transmitted, and the secondary rotary shaft A main shaft secondary transmission mechanism that is provided between the rear end portion of the auger and the end portion of the rotating main shaft of the auger and includes at least one of a belt transmission mechanism, a chain transmission mechanism, a friction transmission mechanism, and a gear transmission mechanism; 5. The snow removal device according to claim 4, wherein the sub-rotating shaft is provided in an upper part of the auger case in parallel with the main axis of rotation of the auger, and the secondary transmission mechanism of the main shaft is provided along one side wall of the auger case. apparatus.   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 6, further comprising a rearward connection portion connectable to the PTO shaft via a connection shaft body in a rearward position.   The snow removal device according to claim 7, wherein the rearwardly connecting portion is formed in an extending portion extending at a rear end portion of the blower shaft of the blower.   9. A scraping plate attached to a front portion of the tractor and configured to scrape snow in front of a 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,
The snow removal device according to any one of claims 1 to 9, wherein the snow removal device is arranged and connected so that an auger exposed from the auger case is exposed toward the front of the tractor at a rear portion 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.

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