JP2006115851A - Tail wheel-attaching device of small movable farm machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small movable farm machine which is equipped with a rotary apparatus behind a machine frame and to or from which only the necessary portion of a tail wheel for movement can quickly be attached or detached to simplify treatments, thus improving the efficiency of works. <P>SOLUTION: The tail wheel 22 for the movement can be attached to the lower portion of a tilling depth-adjusting stay 16 disposed on the rotary apparatus 4. The tail wheel 22 for the movement is small and can simply be attached or detached. The conventional troublesome replacement works between the tilling depth-adjusting stay and a stay for the tail wheel on the repeating of machine frame movements and rotary works are not needed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a mounting device for a moving tail wheel of a small mobile agricultural machine.

Conventionally, in this type of small mobile farmer equipped with a rotary device at the rear of the machine body, when using the tail wheel body, the attachment device of the tillage adjustment stay is removed and the whole is pulled out, and then the stay for the tail wheel body is removed. Repeated operations such as changing and fixing again every time. (For example, see Patent Document 1)
JP-A-8-317703 (page 2-3, FIG. 2, FIG. 8)

  Therefore, in the structure of the above prior art, a long tail wheel support shaft (stay) requires a sturdy support portion to be supported by this machine, and each time the movement of the machine and the rotary work are repeated, The work of replacing the entire tail wheel device and the tilling depth adjusting stay is complicated and troublesome, and the work efficiency is inconvenient and inconvenient. An object of the present invention is to improve the above-described conventional problems.

  In order to achieve the above object, in the present invention, in a tail wheel body mounting device of a small mobile farm machine having a rotary device at the rear of the body, a tail wheel for movement can be mounted on a tilling depth adjusting stay provided in the rotary device. The configuration is the first feature.

  A second feature is that the moving tail wheel body can be attached to the stabilizing plate below the tilling depth adjusting stay.

  The present invention is configured so that the moving tail wheel can be attached to the working depth adjusting stay provided in the rotary device, so that it is possible to use the moving tail wheel when traveling on the road. The operator only needs to attach the tail wheel to the working depth adjusting stay of the rotary device, and there is no need to remove the long working depth adjusting stay and replace it with the stay for the tail wheel body as in the prior art.

  Further, since the moving tail wheel body can be mounted on the stabilizing plate below the tilling depth adjusting stay, handling of the moving tail wheel body can be easily handled.

  An example of an embodiment of the present invention will be described with reference to the following drawings. FIG. 1 is an overall schematic side view of a mobile farm machine equipped with the apparatus of the present invention in a working state. Reference numeral 1 is a body of a walking-type management machine which is a small mobile farm machine. The traveling wheel 3 is driven with the power of 2, and the power is transmitted to the rotary device 4 which is a working machine set at the rear to perform farm work and the like. Here, 5 is a speed change lever, 6 is a driving handle, and the handle 6 includes a main clutch lever 7, an engine control lever 8, a differential lock lever 9 for maintaining straightness during operation, and the like. The driving operation device is provided.

  Further, the rotary device 4 is configured such that a plurality of tilling claws 12... Mounted around the rotation of the tilling shaft 11 at the center rotate to perform tilling work and the like. Reference numeral 14 denotes a resistance rod having a resistance plate 13 attached to the tip thereof for preventing tilling reaction force. Reference numeral 16 denotes a resistance rod immediately after that, and a hook-like stabilization plate 15 is attached to the tip to stabilize the tilling depth. The plowing depth adjusting stay can be adjusted and fixed at the vertical position as will be described later.

  In addition, an arcuate rotary cover 17 covers the upper surface and both side surfaces including the front surface, and the rear cover 18 also has a proximal end (reference numeral 45 described later) on the rear surface so as not to scatter mud or the like outside. It is mounted so that it can rotate up and down around the center. Further, 19 is a bracket for fixing the plowing depth adjusting stay 16, 20 is a stay for attaching a tail wheel body that is welded upward and rearward at an upper portion thereof, and 22 is a tail wheel body for movement. The thickness of the stay 20 is substantially the same as the thickness of the stabilizing plate 15, and the attachment / detachment of the tail wheel body 22 will be described later.

  2 and 3 show the main part of the tail wheel mounting part, FIG. 2 (a) is a side view, FIG. 2 (b) is an explanatory view of the operation of the one-touch lever device part, and FIG. 3 is a plan view of the main part. . That is, the tail wheel body mounting stay 20 is formed with a hole 21 for mounting the tail wheel body 22 in a plane portion thereof. On the other hand, a short inverted U-shaped plate 24 on the upper side is welded to the upper part of a long inverted U-shaped plate 25 on the lower side. A space 26 is provided in the space so that the tip of the stay 20 can be inserted. On the top side of the long inverted U-shaped plate 25 on the lower side, an interference preventing stopper 25a of the rear cover 18 is integrally welded when the tail wheel body 22 is mounted on the stabilizer plate 15. The distal end side of the stopper 25a is slightly bent downward.

  Further, a support shaft 27 is provided at the distal end side of the long inverted U-shaped plate 25, and the tail wheel 28 is supported by the support shaft 27. Therefore, with these configurations, even when the working depth adjusting stay 16 is adjusted and moved to the up and down position, the rear cover 18 has a length that abuts against the distal end side of the stopper 25a and directly interferes with the tail wheel 28 on which the rear cover 18 rotates. Or the rear cover 18 is prevented from being caught in the tail wheel 28 and damaged. Reference numeral 29 denotes a pin inserted at the end of the support shaft 27 to prevent the tail wheel 28 from coming off.

  Further, the short inverted U-shaped plate 24 on the upper side includes the one-touch lever device M for attaching / detaching the tail wheel body 22 on the upper surface side, and the tail wheel body 22 can be easily attached / detached with only one hand of the operator. It is like that. That is, the configuration of the one-touch lever device M is such that an inverted U-shaped plate 31 is welded to the upper part of a short inverted U-shaped plate 24 as shown in FIGS. A hole 33 through which the pin 32 passes is provided. A locking portion 35 is provided above the pin 32 via a constricted portion 34, and on the lower side of the pin 32, the pin 32 is connected to the hole 23 of the short inverted U-shaped plate 24 and the hole 21 of the stay. An E-ring 36 is provided at a position which becomes a lower limit stopper when inserted into the pin 32, and a compression spring 38 is interposed between the pin 32 and a periphery of the hole 33 of the plate 31 via a washer 37 at the lower end. Has been.

  Further, a clevis pin 39 is fixed to one side of the upper side of the plate 31, and an L-shaped lever 40 inserted into the constricted portion 34 of the pin 32 from both sides is fitted between the clevis pin 39. It is. Therefore, when the tail wheel body 22 is removed, the lever 40 is attached by attaching four fingers other than the thumb from the lower side to the stopper 25a and holding the upper inner side of the lever 40 with the thumb each time. According to the lever principle, the compression spring 38 is further compressed to raise the pin 32 as shown in FIG. 2 (b), so that the tip end side of the pin 32 is disengaged from the stay hole 21 to be removed from the stay 20. Is possible.

  Next, FIG. 4 is an enlarged view of the plowing depth adjusting stay portion, where (a) is a side view and (b) is a bottom view. That is, at the center of the flat plate portion of the stabilizing plate 15 below the tilling depth adjusting stay 16, a hole 42 having the same size as the hole 21 of the stay 20 and the hole 23 of the short inverted U-shaped plate 24 is formed. When the machine body 1 of the mobile agricultural machine is transported on the road, only the tail wheel body 22 part is one-touch with the one hand length from the stay 20 above the rotary device 4. And can be reattached to this portion with a single touch to obtain the mounted state of FIG. In addition, the code | symbol 43 ... of FIG. 4 is a latching | locking part for setting a position, when adjusting a tilling depth.

  Further, since the tail wheel body 22 is small and easily attachable / detachable, a stay for attachment is provided on a portion other than the stay 20 provided on the bracket 19 of the rotary device 4 when working in a field where the tail wheel body 22 is not used. It can also be installed. That is, as shown in FIG. 6, when the tail wheel body 22 attached to the tiller shaft 11 by welding the stay 20a for attaching the tail wheel body 22 is mounted on the tiller shaft 11 at the substantially top portion of the rotary cover 17 in a side view. Then, the rotary cover 17 is moved forward and the rear cover 18 is pivoted upward with the pivoting fulcrum 45 as a fulcrum to open the rear side, and the tilling claws 12... When the car is washed or other maintenance is performed, the rear cover 18 is on the front side of the vertical line DD passing through the rotation fulcrum 45, so that the open state is maintained, and these operations are performed. It is easy to do and convenient.

  Further, when moving the airframe 1, when going down a steep slope or the like, as shown in FIG. 7, a stay 20 b for attaching the tail wheel body 22 is welded to the upper center of the airframe width of the balance weight 46 at the front. When the removed tail wheel body 22 is attached to the portion, the balance weight 46 is positioned above the line EE connecting the tail wheel 28 and the traveling wheel 3, so that the balance weight 46 even when traveling on a steep slope. In addition, it is easy to travel on a steep slope, and even when it hits the bank in front of the aircraft 1 while traveling on a flat ground, Therefore, this serves as a cushion to soften the impact at the time of collision and protect the engine 2, muffler 47, bonnet 48 and the like in front of the airframe 1.

  Furthermore, when the tail wheel body 22 is housed in an inconspicuous position when not in use and it is desired to improve the appearance, the air cleaner 49 and the transmission panel 50 of the engine 2 are located on the side of the body 1 as shown in FIG. And an L-shaped stay 20c in which a hole 21a of a pin 32 is provided in a horizontal projecting portion at a lower portion surrounded by the mounting portion 51 of the handle 6 as shown in FIG. Is used to attach the projecting portion of the stay 20c into the space 26 of the tail wheel body 22 from the lever 40 of the one-touch lever device M. When the thumb is released, the pin 32 enters the hole 21a and the tail wheel body 22 is mounted. In this case, it is not so conspicuous and looks good, and since it is arranged near the position of the center of gravity of the body 1, the balance of the body 1 during work and turning is good.

  Next, FIGS. 9 and 10 show examples in which the moving tail wheel 22 is used for other than moving. That is, it is also possible to work by attaching the bent stay 20d to the side surface of the rotary cover 17 and mounting the tail wheel body 22 to this portion. Especially in areas such as paddy fields with high water content, several drainage grooves 54 are cut in order to dry the soil. An operator's foot is taken in the groove 54, and straight tilling is difficult. In such a case, the straw 55 made of concrete or the like serves as a guide, and the straight tilling work can be easily performed.

  It is also possible to work by attaching the bent stays 20d to both side surfaces of the rotary covers 17 and 17 and mounting the two tail wheel bodies 22 and 22 on these portions. In other words, in areas where plates 56, 56 are placed on the left and right sides of the machine body 1 to make vegetables by making straw, farming straight along the tail wheel body 22 on the side of the board 56 will allow direct cultivation. Can be easily done. In addition, in this case, since the width is restricted by the tail wheel bodies 22 and 22 and the plates 56 and 56, there is little vibration in the lateral direction due to tillage.

  The tail wheel mounting apparatus of the small mobile agricultural machine of the present invention has the above-described configuration, and these functions will be described below. First, the operator drives the engine 2 to drive the speed change lever 5 and the engine in the state shown in FIG. 5, that is, in a state where the tail wheel body 22 is mounted on the stabilizing plate 15 below the tilling depth adjusting stay 16 and the rotary device 4 is lifted. The control lever 8 or the like is operated to move to the working field. When the rotary device 4 is driven to perform tillage work or the like, it is necessary to remove the tail wheel body 22 from the stabilizing plate 15. At this time, the driving of the traveling wheel 3 and the rotary device 4 is stopped (engine In order to operate the one-touch lever device M, the rear cover 18 is rotated around the rotation fulcrum 45 and lifted upward, and one hand is put into the rotary device 4 from the rear. When the four fingers are attached to the stopper 25a of the tail wheel body 22 and the thumb is placed on the lever 40 and gripped firmly (see FIG. 2B), the pin 32 rises and comes out of the hole 42 of the stabilizing plate 15. .

  Next, the removed tail wheel body 22 is mounted on the stay 20 above the tail wheel body 22. That is, when the tip end side of the stay 20 is inserted into the space 26 and the thumb 32 is released from the lever 40 when the pin 32 is positioned above the hole 21 of the stay 20, the pin 32 is lowered downward by the spring pressure of the compression spring 38. The tip end side of the pin 32 enters the hole 21 of the stay 20 and the tail wheel body 22 is attached. In this state, the shift lever 5 is operated to advance the machine body 1 and rotate the tillage shaft 11 to perform tillage work and the like. When the work is performed in this way and the work is completed and the vehicle travels on the road, the tail wheel body 22 is again laid on one hand in the same manner as described above to release the lock with the stay 20, and the original stabilizer 15 or It is only necessary to attach this to the resistance plate 13 and travel on the road.

  That is, as in the prior art, the operator can detach only the small moving tail wheel body 22 having no long support shaft with one hand and easily remove it with a single touch at the bottom of the tilling depth adjusting stay 16 of the rotary device 4. A simple operation of the mounting length is sufficient, and since it is compact but securely attached by the urging force of the compression spring 38, it does not easily fall off due to vibration of the airframe 1 or the like. In addition, since it is not necessary to replace the entire plowing depth adjusting stay 16 to which the tail wheel body 22 is attached when traveling on the road, the handling of the attaching / detaching operation becomes simple and the tail wheel body for movement is provided. Even when 22 is not in use, a small moving tail wheel body 22 partial height is mounted on the upper side of the airframe 1, and even though it is a small management machine, There will be no hindrance during driving or damage to the center of gravity of the fuselage 1.

  Further, since the tail wheel body 22 is attached / detached by the one-touch lever device M, the operator can perform it quickly and easily by only one-touch operation of one hand, and the operation load is reduced by the lever principle of the lever 40. . Furthermore, due to the presence of the stopper 25a of the tail wheel body 22, even if the rear cover 18 is moved up and down, it does not come into contact with the rotating tail wheel 28, or it can be caught and damaged. The stopper 25a is also used as a handle for the one-touch lever device M.

It is a whole schematic side view in the operation state of a mobile agricultural machine. The principal part of a tail wheel mounting part is shown, (a) is a side view, (b) is an operation explanatory view of the one-touch lever device part. It is a top view of a principal part same as the above. It is an enlarged view of a tilling depth adjustment stay part, (a) is a side view, (b) is a bottom view. It is a whole schematic side view in the run state of a mobile agricultural machine. It is a side view of 2nd Example which attached the removed tail wheel body above the rotary apparatus. It is a side view when the removed tail wheel body is mounted in front of the airframe. The example which mounted | wore the side part of the body with the removed tail wheel body is shown, (a) is a side view, (b) is a perspective view of a stay. It is a top view of the principal part when the removed tail wheel body is mounted to the side part of the rotary device. It is a top view of the principal part of another example same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Airframe 4 Rotary apparatus 13 Resistance board 14 Resistance rod 15 Stabilizing board 16 Plowing depth adjustment stay 18 Rear cover 19 Fixing bracket 20, 20a Stay 21, 23, 33, 42 Hole 22 Tail body 25a Stopper 26 Space part 28 Tail 31 Plate 32 Pin 38 Compression spring 40 Lever M One-touch lever device

Claims (2)

  In a tail wheel body mounting device for a small mobile farm machine having a rotary device (4) at the rear of the machine body, the tail wheel body for movement (22) can be mounted on the tilling depth adjusting stay (16) provided in the rotary device (4). A tail wheel mounting device for a small mobile agricultural machine, characterized in that it is configured.   The tail wheel body mounting device for a small mobile farm machine according to claim 1, wherein the tail wheel body for movement (22) can be mounted on the stabilizer plate (15) below the plowing depth adjusting stay (16).

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