JP4605764B2 - Auxiliary wheel mounting mechanism of management machine - Google Patents

Description

  The present invention relates to an auxiliary wheel mounting mechanism for an agricultural machine capable of mounting an auxiliary wheel on a drive shaft connected to a wheel.

Conventionally, there is a technique of attaching an auxiliary wheel to a drive shaft connected to a wheel of a farm machine such as a management machine. The following Patent Document 1 discloses a technique in which the wheel is removed from the drive shaft connected to the wheel, a drum rotor is provided on the drive shaft to perform a scraping operation, and an auxiliary wheel is provided outside the drum rotor. Has been. This auxiliary wheel is bolted to both ends of the drive shaft or the drum rotor, and gives a propulsive force to the farm work machine. In addition to the case of the drum rotor, an auxiliary wheel such as a cult wheel is attached to the wheel in a case where sufficient propulsive force cannot be obtained only with the wheel originally provided on the agricultural machine due to conditions such as soft farm fields. In some cases, you may get a driving force.
Japanese Utility Model Publication No. 5-7001

  However, since the auxiliary wheel in the above-described conventional configuration is configured to be bolted to the drive shaft or the like, it is necessary to perform an operation of fastening or loosening the bolt when the auxiliary wheel is attached to or removed from the drive shaft or the like. is there. That is, even when it is desired to attach the auxiliary wheel to the drive shaft, it is necessary to use time and labor for the bolt fastening operation and the like, and thus the auxiliary wheel cannot be easily attached to the drive shaft.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, it is an auxiliary wheel attachment mechanism of the management machine (1) which can attach an auxiliary wheel (51) with respect to the drive shaft (20) of a wheel (41), Comprising: This wheel (41) The inner periphery has a circular shape, and the outer periphery is a “rubber lug wheel” provided with a plurality of rubber protrusions (42), which are rubber protrusions. The auxiliary wheel (51) is connected to the wheel (41). “Culti” which is attached to the shaft part from the outside, has a circular iron ring on the outer side of the spoke (59), and a plurality of metal protrusions (51) which are metal protrusions projecting in the radial direction on the outer periphery of the iron ring and wheel ", the center of the wheel (41) via a spoke (49), provided with wheels side Hoirubosu (44) for fitted the drive shaft (20) on the inside, the wheel-side Hoirubosu (44) The drive shaft (20) is inserted into the drive shaft (20) side pin. (20a) is aligned with the pin hole (45) of the wheel side wheel boss (44), penetrates the flat head pin (91), and the drive shaft (20) and the wheel side wheel boss (44) are locked together. and, wherein the center of the auxiliary wheel (51) to form an auxiliary wheel side Hoirubosu (54), and fitted fixably constituting an extension axle (53) to said auxiliary wheel side Hoirubosu (54), the wheel-side the inner diameter of Hoirubosu (44), wherein said extension axle provided in the center of the auxiliary wheel (51) to (53) and fixably structure fitted, is formed on the inner end side of the extension axle (53) The extension axle pin hole (53a) and the wheel side boss pin hole (46) formed on the cylindrical side surface of the wheel side wheel boss (44) are aligned, and the other flat head pin (91a) is passed through. mutually engaging with said extension axle (53) and a wheel-side Hoirubosu (44) In which was made possible.

  As effects of the present invention, the following effects can be obtained.

The auxiliary wheel mounting mechanism of the management machine (1) capable of mounting the auxiliary wheel (51) to the drive shaft (20) of the wheel (41) according to claim 1, wherein the wheel (41) ) Is a “rubber lug wheel” in which the inner periphery has a circular shape and the outer periphery is provided with a plurality of rubber protrusions (42) which are rubber protrusions, and the auxiliary wheel (51) is connected to the wheel (41). On the other hand, it is attached to the shaft portion from the outside, and has a circular iron ring on the outer side of the spoke (59), and a plurality of metal protrusions (51), which are metal protrusions, protrude in the radial direction on the outer periphery of the iron ring. and "row crop wheels", in the center of the wheel (41) via a spoke (49), provided with wheels side Hoirubosu (44) for fitted the drive shaft (20) on the inside, the wheel The drive shaft (20) is inserted into the side wheel boss (44), and the drive shaft (20) side pin is inserted. The position of the hole (20a) and the pin hole (45) of the wheel side wheel boss (44) is aligned, the flat head pin (91) is passed through, and the drive shaft (20) and the wheel side wheel boss (44) are engaged with each other. sealed, the auxiliary wheel (51) center the auxiliary wheel side Hoirubosu (54) is formed of, and fitted fixably constituting an extension axle (53) to said auxiliary wheel side Hoirubosu (54), said wheel the inner diameter side Hoirubosu (44), wherein said extension axle provided in the center of the auxiliary wheel (51) to (53) and fixably structure fitted, formed on the inner end of the extension axle (53) The extended axle pin hole (53a) and the wheel-side boss pin hole (46) formed on the cylindrical side surface of the wheel-side wheel boss (44) are aligned to penetrate the other flat head pin (91a). , the extension axle (53) and the wheel side Hoirubosu (44) and to each other Since the possible stop, it is possible to attach the quick and easy training wheels compared to the structure fixed using conventional as bolts or the like training wheels on Hoiru wheels, also to simplify the structure for fixing be able to.

  In addition, the auxiliary wheel can be fixed to the wheel simply by inserting the stop member into the fixing hole, and the auxiliary wheel can be easily attached to the outside of the wheel with a stop member without using a tool such as a driver. This makes it possible to simplify the work of attaching and removing the auxiliary wheels. Further, by using a flat head pin or the like as the stop member, it is not necessary to perform a fastening operation when fixing with a bolt or the like, and it is possible to easily lock.

  In addition, the extension axle and the auxiliary wheel can be configured separately, and the auxiliary wheel can be easily attached to the outside of the wheel with a stopper member, and the auxiliary wheel can be attached and removed. Can be simplified. Further, a cult wheel or the like can be further attached to the auxiliary wheel side wheel boss, and by changing the attachment position of the extension axle, the vehicle width can be changed in accordance with the work site.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the accompanying drawings for understanding of the present invention.

  The following best mode for carrying out the present invention is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.

  FIG. 1 is a schematic side view showing an outline of a general management machine, FIG. 2 is a perspective view of the vicinity of a wheel showing a situation where auxiliary wheels are attached to the management machine, and FIG. 3 shows a situation where auxiliary wheels are attached to the management machine. It is a schematic diagram of a wheel vicinity.

<Outline configuration>
First, a schematic configuration of a walking-type management machine 1 that is an example of a farm work machine will be described with reference to FIG. In addition, let the direction shown by the white arrow 100 of FIG. An engine 3 is mounted on the engine frame 2 at the front of the management machine 1, and a fuel tank 4 is placed on the upper part of the engine 3. A mission case 5 is fixed to the rear end of the engine frame 2, and a handle base 32 is provided on the top of the mission case 5. A base 31a of the handle 31 is mounted on the handle base 32 so as to be rotatable about a vertical axis, and the handle 31 protrudes upward and backward from the base 31a so that the vertical angle can be adjusted. An input shaft 6 protrudes laterally from the side surface of the mission case 5, and an input pulley 7 is fixed on the input shaft 6. The input pulley 7 and the output shaft 8 of the engine 3 are connected to the input shaft 7. A belt 10 is wound around a fixed output pulley 9. Since it is configured in this manner, the power from the engine 3 is configured to be transmitted from the engine 3 to the transmission case 5. A belt tension type main clutch 11 is disposed between the input pulley 7 and the output pulley 9, and the main clutch 11, the input pulley 7, the output pulley 9, the belt 10, etc. are covered with a transmission case 12. . The main clutch 11 is connected to a tension arm via a main clutch lever 18 provided on the handle side of the handle 31 and a main clutch wire 17. A chain case 19 projects from the transmission case 5 to the front lower side, and a drive shaft 20 for traveling is pivotally supported in the left-right direction below the chain case 19. Wheels 41 are fixed to the drive shaft 20, and are driven to travel by the power from the engine 3 transmitted via the mission case 5. Moreover, the rotary tiller 29 is provided in the rear part of the management machine 1, and is comprised as follows. A tilling case 22 protrudes rearward and downward from the transmission case 5, and a tilling claw shaft 23 is pivotally supported in the left-right direction below the tilling case 22. A plurality of tilling claws 24, 24,... Are planted on the axis of the tilling claw shaft 23, and the top and side of the rotation trajectory of the tips of these tilling claws 24, 24,. It is configured to be covered by a tilling cover 25 attached to the frame 26. The tilling frame 26 is fixed to the upper portion of the tilling case 22 so as to protrude rearward, and a gauge ring 28 is attached to an upper end of the tilling case 22 through a mounting boss 27 fixed to the rear end thereof so that the height can be adjusted. . In this embodiment, the chain case 19 and the tilling case 22 are integrally configured as a drive case 30 bent in a substantially “<” shape when viewed from the side, but the tilling case 22 is configured separately. The rotary tiller can also be configured to be detachable from the machine as a unit. In the vicinity of the left side of the handle base 32, a main transmission lever 33 protrudes so as to be able to change back and forth, and is attached in accordance with the direction of the handle 31. A PTO speed change lever 34 is disposed in the vicinity of the right side of the handle base 32.

<Wheels and auxiliary wheels>
Next, the case where the auxiliary wheel 51 is attached to the management machine 1 having the above-described configuration will be described with reference to FIGS. FIG. 2 shows the situation where the auxiliary wheel 51 is attached to the drive shaft 20 of the management machine 1 and shows the vicinity of the left wheel 41 from the front left side of the management machine 1, and the right wheel 41 is the same. It becomes the composition of. 3A, 3B, and 3C are schematic views schematically showing the wheel-side wheel boss 44 and the auxiliary wheel-side wheel boss 54 when the left-side wheel 41 shown in FIG. 2 is viewed from the front.
In FIG. 3, the symbol “49” means the spoke of the wheel 41, and the symbol “59” means the spoke of the auxiliary wheel 51. FIG. 3A shows a case where the auxiliary wheel 51 and the extension axle 53 are separated. FIG. 3B is a diagram showing a case where the auxiliary wheel 51 and the extension axle 53 are integrated. FIG. 3C is a cross-sectional view showing the internal structure of the wheel side wheel boss 44 and the auxiliary wheel side wheel boss 54 in FIG. 3A.
As shown in FIG. 1 and FIG. 2, the wheel 41 has a circular shape on the inner periphery and a plurality of rubber protrusions 42 that are rubber protrusions on the outer periphery. It is called. A wheel-side wheel boss 44 is provided at the center of the wheel 41 via a spoke 49 (see FIG. 3) and the like, and a wheel-side boss pin hole 45 serving as a fixing hole is provided on the cylindrical side surface. In addition, a drive shaft side pin hole 20 a serving as a fixing hole is also formed in the middle portion of the drive shaft 20. (In FIG. 2 and FIG. 3, the drive shaft side pin hole is hidden inside the wheel side bospin hole 45.) And, as shown in FIG. Is inserted and the positions of the wheel-side boss pin hole 45 and the drive shaft side pin hole 20a are aligned, and the both pin holes (drive shaft side) are fixed by a flat head pin 91 which is an example of a stop member as shown in FIG. By penetrating the pin hole 20a and the wheel side boss pin hole 45), the drive shaft 20 and the wheel side wheel boss 44 can be locked to each other. Further, after penetration by the flat head pin 91, the flat head pin 91 is retained by inserting a pine needle pin 93 or the like into a small hole 92 formed at the tip of the flat head pin 91. In the following description, when the flat head pins 91a and 91b are penetrated, the pine needle pins 93 and the like are inserted into the small holes 92a and 92b to be retained. Further, here, an example of locking using the flat head pin 91 and the pine needle pin 93 has been described. However, the pin is not limited to the flat head pin 91 or the pine needle pin 93 as long as it has a similar locking function. The above-described locking can also be performed using other members. Next, as shown in FIGS. 2 and 3, the auxiliary wheel 51 is attached to the shaft portion from the outside with respect to the wheel 41, and has a circular iron wheel on the outer side of the spoke 59. A metal protrusion 52, which is a metal protrusion, is provided on the outer periphery so as to protrude in a plurality of radial directions. The auxiliary wheel 51 is commonly referred to as “cult wheel” and is used for middle tillage. In this embodiment, the auxiliary wheel 51 is used to increase the gripping force. Therefore, the outer peripheral shape of the auxiliary wheel 51 is not limited as long as the outer diameter is substantially the same as that of the wheel 41 and the grip force is increased. An auxiliary wheel side wheel boss 54 is provided at the center of the auxiliary wheel 51 via a spoke 59 (see FIG. 3) or the like, and an extension axle 53 for connecting to the drive shaft 20 is provided on the auxiliary wheel side wheel boss 54. It is inserted. Such an attachment mechanism between the auxiliary wheel 51 and the wheel 41 will be described in more detail with reference to the schematic diagram of FIG.

<Extension axle and auxiliary wheel boss>
As shown in FIG. 3A, an auxiliary wheel side bospin hole 56 and an auxiliary wheel side bospin hole 55 that are fixed holes are formed on the cylindrical side surfaces of both ends of the auxiliary wheel side wheel boss 54. Further, extension axle pin holes 53a and 53c serving as fixing holes are also formed on both ends of the extension axle 53. (The extension axle pin holes 53a and 53c are hidden inside the auxiliary wheel side bospin hole 56 and the wheel side bospin hole 46 in FIG. 3A.) One end side is inserted into the auxiliary wheel side wheel boss 54, aligned with the auxiliary wheel side bospin hole 56, and passed through both pin holes (the auxiliary wheel side bospin hole 56 and the extension axle pin hole 53c) with the flat head pin 91. Thus, the extension axle 53 and the auxiliary wheel side wheel boss 54 can be easily locked together. Further, when the pin hole formed in the extension axle 53 is formed closer to the center, the position of the extension axle pin hole 53b and the auxiliary wheel side bospin hole 55 is matched, and the flat head pin is the same as described above. The extension axle 53 and the auxiliary wheel side wheel boss 54 can be locked with each other. With this configuration, the extension axle 53 can be attached to the auxiliary wheel 51.

<Extension axle and wheel side wheel boss>
Further, the other end side of the extension axle 53 is inserted into the wheel side wheel boss 44 from the opposite side to the insertion direction of the drive shaft 20. Then, the extension axle pin hole 53a formed on the other end side of the extension axle 53 and the wheel side bospin hole 46 formed on the cylindrical side surface of the wheel side wheel boss 44 are aligned and penetrated by the flat head pin 91. Thus, the extension axle 53 and the wheel side wheel boss 44 can be easily locked to each other. By connecting the other end side of the extension axle 53 and the wheel side wheel boss 44 in this way, the auxiliary wheel 51 can be attached to the outside of the wheel 41 as shown in FIGS. In this configuration, a tool such as a screwdriver used for conventional bolting is not required, and the auxiliary wheel 51 can be easily attached to the outside of the wheel by one touch using the flat head pin 91. The installation work and the removal work can be simplified.

<Without auxiliary wheel side wheel boss 54>
Next, the case where the auxiliary wheel side wheel boss 54 is not provided at the center of the auxiliary wheel 51 will be described with reference to FIG. In this case, one end side of the extension axle 53 is directly fixed to the spoke 59 of the auxiliary wheel 51 and the like. On the other hand, the other end side of the extension axle 53 is formed with an extension axle pin hole 53a in the same manner as in the case of FIG. 3A described above, and is aligned with the wheel side boss pin hole 46 and penetrates with the flat head pin 91. Thus, the extension axle 53 and the wheel-side wheel boss 44 are locked together. With this configuration, as in the case described above, there is no need for a tool such as a screwdriver used in conventional bolting, and the auxiliary wheel 51 can be easily attached to the outside of the wheel with a single touch using the flat head pin 91. Since the auxiliary wheel side wheel boss 54 is omitted, the configuration is simplified and the weight can be reduced. In addition, the diameter of the flat head pin is set to a size that can be accommodated in the pin hole, so that all kinds of parts do not increase. Moreover, although the position of the wheel-side bospin hole 46 for attaching the extension axle 53 to the wheel-side wheel boss 44 is arranged inside the spoke 49, it can be arranged outside the spoke 49. Further, the drive shaft side pin hole 20a of the drive shaft 20, the wheel side boss pin hole 45 of the wheel side wheel boss 44, and the extension axle pin holes 53a to 53c of the extension axle 53 are further spaced apart in a plurality of axial directions. By opening, the tread (the left and right positions of the wheel 41 and the auxiliary wheel 51) can be changed.

The schematic block diagram which shows the outline of a general management machine. The schematic block diagram of the wheel vicinity which shows the condition which attached the auxiliary wheel to the management machine. The schematic diagram of the wheel vicinity which shows the condition which attached the auxiliary wheel to the management machine.

DESCRIPTION OF SYMBOLS 1 Management machine 20 Drive shaft 41 Wheel 44 Wheel side wheel boss 51 Auxiliary wheel 53 Axle for extension 54 Auxiliary wheel side wheel boss

Claims (1)

An auxiliary wheel mounting mechanism of a management machine (1) capable of mounting an auxiliary wheel (51) to a drive shaft (20) of a wheel (41), the wheel (41) having a circular inner periphery The outer periphery is a “rubber lug wheel” provided with a plurality of rubber protrusions (42) which are rubber protrusions, and the auxiliary wheel (51) is attached to the shaft portion from the outside with respect to the wheel (41). The wheel has a circular iron ring on the outer side of the spoke (59), and a “cultural wheel” in which a plurality of metal protrusions (51), which are metal protrusions, project in the radial direction on the outer periphery of the iron ring, A wheel side wheel boss (44) for fitting the drive shaft (20) inside is provided through a spoke (49) at the center of (41), and the wheel side wheel boss (44) is provided with the wheel side wheel boss (44). The drive shaft (20) is inserted, the pin hole (20a) on the drive shaft (20) side and the wheel side Align the pin holes (45) of Irubosu (44), the flat through the head pin (91), engages said drive shaft (20) and a wheel-side Hoirubosu (44) to each other, wherein the auxiliary wheel ( center auxiliary wheel side Hoirubosu (54) is formed of 51), and fitted fixably constituting an extension axle (53) to said auxiliary wheel side Hoirubosu (54), the inner diameter of the wheel-side Hoirubosu (44) the center the extended axle (53) and fixably structure fitted provided on the unit, the extension axle pin holes formed in the inner end of the extension axle (53) of the auxiliary wheel (51) (53a) and the wheel-side boss pin hole (46) formed on the cylindrical side surface of the wheel-side wheel boss (44) are aligned with each other, penetrate the other flat head pin (91a), and extend the axle (53 ) and especially that the wheel-side Hoirubosu (44) and lockable with one another Management unit of the auxiliary wheel attachment mechanism to be.

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