JP5049936B2 - Walking type mobile farm machine - Google Patents

Description

  The present invention relates to a walking-type mobile agricultural machine such as a management machine that plows while running with a rotary member.

  2. Description of the Related Art Conventionally, a fender (main fender) disposed so as to cover an upper portion of a rotary member (cultivation rotor) attached to a tilling shaft (output shaft) of a transmission case, and the rear end of which protects the rear of the rotary member. A walking-type mobile agricultural machine (small management machine) has been devised in which a fender (auxiliary fender) is attached and the mounting height of the rear fender is adjustable (see Patent Document 1).

  The fender is a plate-like member that covers the upper part of the rotary member below the engine, and its front and rear ends are slightly bent downward, and a mounting bolt projects from the rear end. A rear fender is suspended from the rear end of the fender by the mounting bolt.

  At the upper end of the rear fender, a hole through which the mounting bolt is inserted is formed vertically long with a certain length toward the lower end, and the mounting position of the rear fender is adjusted by adjusting the mounting position in the longitudinal direction of the hole. The height is adjusted.

Japanese Utility Model Publication No. 58-163372

  However, the walking-type mobile agricultural machine described in Patent Document 1 has a rear fender formed over the entire rear end of the fender, and only the height position of the rear fender can be adjusted. And the rear fender may interfere with each other.

  Therefore, by configuring the rear fender so that it can be switched between a rotatable allowable position and a fixed position fixed on the rotational end side, various mounted members can be attached, and work efficiency can be improved. The purpose is to provide a good walking-type mobile agricultural machine.

With the present invention transmits power from the engine (32) to the rotary member (33), and a below the engine (33), provided fender (50) above the rotary member (33), said fender In the walking-type mobile agricultural machine (30) provided with the rear fender (1) covering the rear of (50) , the left fender plate (3) is sandwiched between the rear fender (1) and the rear part of the rear hitch (5). The rear hitch (5) is provided with a through hole (5a), and the connecting shaft (4) is inserted through the through hole (5a). The left fender plate (3) and the right fender plate (2) are fixed to both ends of the connecting shaft (4), and the left side (X1 direction) of the rear hitch (5) sandwiches the spring ( 6) The left fender plate (3) and the rear The spring (6) protrudes to the left side of the fuselage from the end face of the attachment part of the left fender plate (3) and the through hole (5a) of the rear hitch (5). Abutting against the projecting end face of the bearing (9), the rear fender (1) is always urged to the left side, and the positioning plate ( 7 ′) is fixed to the right end surface of the rear hitch (5), and the rotation pin (7a) protrudes from the attachment part (2a) of the right fender plate (2) toward the inside of the machine body (X1 direction). By inserting the rotation pin (7a) into the recesses (7c, 7d, 7e) of the positioning plate (7 '), the rear fender (1) can be moved to the rotation allowable position (cd) and below. And a lower limit fixing position (b) that can be fixed with a switching member (7) that switches to The walking-type mobile agricultural machine is characterized in that the position (b) is positioned in front of the lower position (d) of the rotation allowable position.

  In addition, although the code | symbol etc. in a parenthesis is for contrast with drawing, it does not have any influence on a claim by this.

  According to the present invention, a walking-type mobile agricultural machine includes a rear fender that transmits power from an engine to a rotary member, provides a fender below the engine and above the rotary member, and covers the rear of the fender. A switching member that switches the rear fender between a pivotable rotation allowable position and a lower limit fixed position that can be fixed below, and the lower limit fixed position is located on the front side of the lower position of the rotation allowable position. By changing the position of the rear fender according to the situation, it is possible to attach various mounted members with the rear fender mounted, and the work width of the walking type mobile farm machine is widened. Can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 3 (a) and 3 (b), a management machine 30 as a walking-type mobile farm machine according to the present invention is rotated by a mission case 31, an engine 32, and a driving force of the engine 32 that are elongated vertically. Thus, a rotary claw (rotary member) 33 for plowing and a fender 50 for preventing the mud and stones from jumping upward are provided.

  The mission case 31 configured as a machine body frame is a vertically long, substantially rectangular member, and is inclined obliquely in the vertical direction. An engine 32 is mounted on the upper part of the transmission case 31, and a tillage shaft 33a extends in the left-right direction of the machine body at the lower end portion. A rotary claw 33 is provided on the tillage shaft 33a.

  A fuel tank 35 having a large-diameter fuel cap 34 is disposed above the engine 32, and a recoil rope 38 and a muffler 37 are disposed on the sides thereof. Since the fuel tank 35 is covered with a tank cover 36, even if fuel is spilled during refueling, the fuel tank 35 does not drop onto the high-temperature muffler 37.

  A handle frame 40 is provided at the upper end of the mission case 31 toward the upper rear part of the fuselage, and left and right handles 41L, 41R are extended from the handle frame 40. The management machine 30 is operated by the left and right handles 41L and 41R, the main handle clutch lever 42 including a deadman clutch is disposed on the left handle 41L, and the accelerator lever 43 is disposed on the right handle 41R. It is installed.

  On the other hand, a front hitch 51 and a rear hitch 5 are provided in the middle of the mission case 31, and a fender 50 is fixed by the upper part thereof. The fender 50 made of a single plate-like member is positioned below the engine 32 to support the engine 32, and covers the upper portion of the rotary claw 33 provided so as to protrude in the left-right direction of the machine body. Is prevented from scattering upward.

  Next, the rear fender which is the main part of the present invention will be described.

  As shown in FIGS. 1A and 1B, the rear fender 1 is disposed at the rear part of the rear hitch 5 and includes left and right fender plates 2 and 3, a switching member 7, a spring 6, and a connecting shaft 4. The left and right fender plates 2 and 3 are both made of a substantially rectangular plate-like member, and are provided with shaft attachment portions 2a and 3a formed in a cylindrical shape from the inner side to the middle of the upper end portion thereof. . The inner diameters of the shaft mounting portions 2a and 3a are substantially the same as the outer diameter of the connecting shaft 4, and the inserted connecting shaft 4 can be fixed by clevis pins 8 and 8 and snap pins.

  The rear hitch 5 is provided with a through hole 5 a, and the connecting shaft 4 is inserted through the through hole 5 a through a bearing 9. The left and right fender plates 2 and 3 are fixed to both ends of the connecting shaft 4, and the spring 6 is connected to the left fender plate 3 and the rear hitch 5 on the left side (X1 direction) when the rear hitch 5 is sandwiched. Between the two. The spring 6 abuts against the end face of the mounting portion 3a of the left fender plate 3 and the end face on the protruding side of the bearing 9 that protrudes from the through hole 5a of the rear hitch 5 to the left side of the machine body (X1 direction). Is always energized in the X1 direction.

  In addition, on the right side (X2 direction) of the aircraft rear view across the rear hitch 5, the positioning plate 7 'is fixed to the right end surface of the rear hitch 5, and the inner side of the right fender plate 2 from the attachment portion 2a (X1 direction). ) Is provided with a projecting pin 7a. The rotation pin 7a is inserted into recesses 7c, 7d and 7e of a positioning plate 7 'which will be described later, and constitutes a switching member 7 for positioning the rear fender 1 therewith.

  As shown in FIGS. 2 (a) and 2 (b), the positioning plate 7 ′ described above is a plate-like member having an insertion hole 7b through which the connecting shaft 4 is inserted at the center. It has a plurality of recesses 7c, 7d, 7e to be inserted. The recesses 7c, 7d, and 7e are provided on the left and right sides and the lower part of the outer periphery of the positioning plate 7 '. The left and right recesses 7c and 7d are formed in substantially the same shape as the rotation pin 7a. The lower recess 7e formed between the recesses 7c and 7d is formed with a certain width. The rotation pin 7a is fixed so as not to rotate in the left and right concave portions 7c and 7d, and is rotatable within a range of a certain width in the lower concave portion 7e.

  The rear fender 1 becomes the upper limit fixed position a when the rotation pin 7a is inserted into the right recess 7d, and becomes the lower limit fixing position b when it is inserted into the left recess 7c. Further, when the rotation pin 7a is inserted into the lower recess 7e, the rear fender 1 becomes the rotation allowable positions c to d, and when the rotation pin 7a is positioned at the right end of the lower recess 7e, the rear fender 1 is at the upper position c. When the rotation pin 7a is positioned at the left end, the rear fender 1 is in the lower position d.

  On the other hand, a mounting cylinder 5b formed in a cylindrical shape is provided at the rear part of the rear hitch 5. In the mounting cylinder 5b, a working machine such as a resistance bar 52a or a moving tail wheel 10 or a soil cultivator that suppresses inadvertent movement of the machine body by immersing it in the soil and enables stable operation of the machine body. (Attached member) is attached.

  For example, the moving tail wheel 10 shown in FIG. 1B includes a wheel 18, a resistance rod 52b, and an attachment base 12, and is composed of three layers of an upper plate 12a, an intermediate plate 12b, and a lower plate 12c. An insertion rod 16 extending from the middle plate 12b of the base 12 is attached to the rear hitch 5 by being inserted into and fixed to the attachment cylinder 5b.

  A rotating shaft 13 is provided at the center of the mounting base 12, and the upper plate 12a is configured to be rotatable about the rotating shaft 13 with respect to the middle plate 12b and the lower plate 12c to which the rotating shaft 13 is fixed. Has been. The resistance rod 52b and the wheel 18 described above are mounted on the upper and lower ends of the upper plate 12a via the connecting members 14 and 15, and the positions can be switched by reversing the upper plate 12a.

  Hereinafter, the operation of the management machine according to the present embodiment will be described.

  When an operator performs operations such as tilling and soiling using the management machine 30, he or she attaches various working machines or resistance bars 52 a to the mounting cylinder 5 b of the rear hitch 5 according to the purpose. When performing normal tillage work, the operator attaches the resistance rod 52a to the mounting cylinder 5b, sets the rear fender 1 to the rotation allowable position cd, pulls the recoil rope 38, and starts the engine 32. Let

  When the engine 32 is started, the operator grasps the left and right handles 41L and 41R, sinks the resistance bar 52a into the field, grasps the main transmission clutch lever 42 provided on the left handle 41L, and is provided on the tilling shaft 33a. The rotary claw 33 is rotationally driven to perform the tilling work.

  In addition, the operator can fix the rear fender 1 to the fixed positions a and b by rotating the rear fender 1 to the fixed positions a and b while pressing the rear fender 1 in the X2 direction. The rotary claw 33 is submerged deeply in the soil by setting the fender 1 to the upper limit fixing position a.

  The operator also rotates the rear fender 1 to the upper limit fixed position a when attaching the cultivator or when using the moving tail wheel 10 by inverting it. The rear fender 1 rotates to the upper limit fixing position a and does not come into contact with a farm scene, a cultivator or the like by storing the left and right fender plates 2 and 3 upward.

  On the other hand, when moving on asphalt or the like, the operator rotates the rear fender 1 to the lower limit fixing position b, and attaches the moving tail wheel 10 to the mounting cylinder 5 b of the rear hitch 5. Since the rear fender 1 is at the lower limit fixed position b, the rear fender 1 does not interfere with the moving tail wheel 10 and does not come into contact with the farm scene, so that the operator can easily hold the management machine 30 even on hard asphalt or the like. Can be moved to.

  By configuring the management machine 30 as described above, the rear fender 1 can be switched to the upper limit fixed position a, the lower limit fixed position b, and the rotation allowable positions cd, and at the normal rotation allowable positions cd. In addition to preventing muddy soil or stones from flying backwards, it is possible to attach various working machines such as the moving tail wheel 10 and the cultivator without interfering with the rear fender 1 attached at the fixed positions a and b. It becomes possible.

  In addition, at the lower limit fixed position b, the work machine such as the moving tail wheel 10 can be used while preventing the mud or stone from scattering backward by the rear fender 1, and at the upper limit fixed position a, the rear fender 1 is stored upward. As a result, it is possible to cultivate soil deeper than usual, and the range of work of the management machine 30 is widened, and work efficiency can be improved.

(A) The top view of the back fender from the airframe back. (B) The side view around the back hitch which shows the fixed position and rotation permission position of a back fender. (A) Left side view around the through hole of the rear hitch. (B) A right side view of the rear hitch. (C) Top view of the rear hitch. (A) The top view of the management machine which concerns on this Embodiment. (B) The side view of the management machine which concerns on this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rear fender 7 Switching member 7 'Positioning plate 7a Rotating pin 10 Mounted member (moving tail wheel, working machine)
32 Engine 33 Rotary member (rotary claw)
50 Fenders a and b fixed position a upper limit fixed position b lower limit fixed position cd rotation allowable position

Claims (1)

Transmits power from the engine (32) to the rotary member (33), and a below the engine (33), provided with a fender (50) above the rotary member (33), said fender (50) In the walking type mobile agricultural machine (30) provided with the rear fender (1) covering the rear , the left fender plate (3) and the right fender plate ( 2), the rear hitch (5) is provided with a through hole (5a), the connecting shaft (4) is inserted into the through hole (5a), and the connecting shaft ( 4) The left fender plate (3) and the right fender plate (2) are fixed to both ends of the body 4), and the spring (6) is left on the left side (X1 direction) when viewed from the rear of the aircraft with the rear hitch (5) interposed therebetween. Fender plate (3) and rear hitch (5) The spring (6) is disposed between the end face of the attachment portion of the left fender plate (3) and the bearing (9) protruding leftward from the through hole (5a) of the rear hitch (5). Abutting against the projecting end face, the rear fender (1) is always urged to the left side, and the positioning plate (7 ′) is rearward on the right side (X2 direction) of the aircraft rearward with the rear hitch (5) interposed therebetween. While being fixed to the right end surface of the hitch (5), a rotating pin (7a) is projected from the mounting portion (2a) of the right fender plate (2) toward the inside of the fuselage (X1 direction). By fitting the pin (7a) into the recesses (7c, 7d, 7e) of the positioning plate (7 ′) , the lower limit that allows the rear fender (1) to be fixed to the rotation allowable position (cd) and below. A switching position (7) for switching between the fixed position (b) and the lower limit fixed position (b) A walking type mobile agricultural machine characterized in that is positioned in front of a lower position (d) of the rotation allowable position.

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