JP2514729Y2 - Working unit traction device - Google Patents

Description

[Detailed Description of the Invention] (b) Industrial field of application The present invention relates to a working part towing device of a riding work machine such as a riding rice transplanter. More specifically, the working part attached to the riding work machine is removed. The present invention relates to a work unit traction device for towing.

(B) Conventional technology In recent years, a riding rice transplanter, especially a riding rice transplanter for multi-row planting, is used for rice planting work in a vast field, but the planting part for multi-row planting has an extremely wide width. Therefore, it was difficult for the passenger rice transplanter with the planting part to be mounted on the general road. Therefore, casters are attached to the left and right sides of the planting section, removed from the body of the passenger rice transplanter, remounted in the longitudinal direction, and transported and stored by a towing device.

(C) Problems to be solved by the invention However, due to the mounting structure of the riding rice transplanter with the machine body, the power transmission case that drives the planting claws etc. is installed unevenly on either the left or right side. Therefore, the center of gravity of the planting part will also be biased to the left or right side, and the caster on the side with uneven center of gravity will be more heavy than the casters on the other side and will not rotate easily. It required sufficient traction on the side of the rice transplanter.

Therefore, an object of the present invention is to provide a working unit traction device capable of reducing the traction force of a riding rice transplanter.

(D) Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances. For example, referring to FIGS. 1 and 6, a lifting link is provided at the rear of the traveling vehicle body (5). A work unit towing device in which a work unit (19), which is detachably mounted via a device (18), is connected to the machine body (5) in a detached state, and a plurality of pneumatic tires (31) are provided. And a caster device (40) having a wheel (41) and rotatable in a horizontal plane, within a width of the working portion in the front-rear direction during towing. Further, the caster device is located in front of the center of gravity of the working part and the wheel device is located in the rear of the working part so that the wheel device is detachably attached, and the wheel device (30) is closer to the center of gravity of the working part (19). In addition, the caster device (40) is arranged at a distant position. Located in the business unit traction device.

(E) Action Based on the above configuration, the wheel device (30) having a plurality of pneumatic tires (31) is attached to the working unit (19) in order to remove the working unit (19) from the machine body (5) and transport it by towing. The wheel device having the pneumatic tire (31) when mounted on the side closer to the center of gravity of the vehicle, and further mounted on the caster device (40) at a position farther from the center of gravity, and connecting the working unit (19) to the machine body (5) in this state. The working part (19) is heavier on the side of (30), the working part (19) is smoothly towed, and the load on the caster device (40) side is smaller, so the direction can be changed to the left and right. It will be easy.

In addition, the wheel device (30) and the caster device (40) have different work loads (1
It is located within the width in the front-rear direction of 9) so that the wheel device and caster device do not get in the way.

(F) Effects of the Invention As described above, according to the present invention, the wheel device (30) made of a pneumatic tire bears a large amount of weight, and the caster device (40) side bears a small amount of weight. Towing by the machine body (5) can be smoothly and reliably performed with a small amount of power, and the towing and pushing operations can be relatively easily performed by input even when storing in a barn, etc. and stored at a desired location. You can

The working unit (19) can be used even when stored in a barn or the like.
The wheel device (30) and the caster device (40) do not project outward, and the work unit (19) can be easily stored in a small space while being supported by the wheel device and the caster device. If you can also hang the seat cover,
It can be done easily and accurately.

The reference numerals in parentheses refer to the drawings and do not limit the configuration in any way.

(G) Embodiment An embodiment of the present invention will be described below with reference to the drawings.

The riding rice transplanter 1 has a traveling machine body 5 supported by front wheels 2, 2 and rear wheels 3, 3 as shown in FIG. Engine 6
Is installed. Further, fertilizer tanks 7, 7 are arranged on the left and right sides of the engine 6, and a suction hose 9 is connected to the fertilizer tank 7. The suction hose 9 is extended to the rear of the machine body 5 and communicates with and is connected to a fertilizer pump 10 arranged at the center of the machine body 5.

A driver's seat 11, a steering handle 12, an operating lever 13 and the like are arranged in the upper center of the aircraft body 5, and the side steps 16, 16 located on the left and right sides of the driver's seat 11 are arranged. A wheel device 30 and a caster device 40, which will be described later, are detachably stored and stored (see FIG. 7).

A planting section 19 is supported on the rear side of the machine body 5 so as to be vertically movable and detachable via a lifting link device 18 composed of a top link 17a and a lower link 17b.
20 rotary type planting claws, 20 floats, fertilizer nozzle
22 and a seedling stand 23 are provided (see FIGS. 1 and 7). Further, after the operation seat 11, an auxiliary seedling stand 14 is arranged extending to the left and right sides of the machine body 5.

On the other hand, when pulling the planting section 19, as shown in FIG. 1, the wheel device 30 and the caster device 40 are attached to the horizontal shaft 27 of the planting section 19. As shown in detail in FIG. 2, the wheel device 30 is provided with pneumatic tires 31, 31 that are pivotally fixed in a horizontal plane on both ends of a shaft 32. A holding member 33 made of a square pipe material is fixed, and a connecting member 35 made of a square pipe material is also mounted on the holding member 33. Also, the left and right tires 3
Arms 36, 36 are attached to the shaft 32 adjacent to the inside of the attachment positions of 1, 31, and a fixing plate 37 is fixed to the tip ends of these arms 36, 36. In addition, the caster device 40
As shown in detail in FIG. 3, casters 41, 41 that are rotatable in a horizontal plane are attached to both ends of the shaft 42. Further, as in the case of the wheel device 30, the shaft 42 has a central upper portion thereof. A holding member 43 made of a square pipe material is provided on the above, and a connecting member 45 made of a square pipe material is also mounted on the holding member 43. Further, arms 46, 46 are attached to the shaft 42 adjacent to the inside of the attachment positions of the left and right casters 41, 41,
A fixing plate 47 is fixed to the tips of the arms 46, 46.

The caster device 40 and the wheel device 30 are, as shown in FIG. 1, the wheel mark erasing devices 26, 26 of the horizontal shaft 27 of the working unit 19.
The stay 24 is attached at a position substantially the same as the position where is attached. In this case, the weight arrangement of the working unit 19 will be offset to either one due to the positional relationship of the transmission case 25 or the like, so the wheel device 30 is arranged at the wheel position where more weight is added, The caster device 40 is arranged at a wheel position where a small amount of force is applied, and the towing is performed with the caster device 40 arranged in front. The wheel mark erasing device 26 is shown in FIG.
As shown in (b), it has a generally scoop-like shape and functions to even out the unevenness of the field formed by the wheels 2 and 3.

Further, the pulling rod 28 made of a square pipe material is inserted into the holding member 43 of the caster device 40, and the end of the rod 28 is fixed so as not to come off from the holding member 43. Also,
A U-shaped hitch member 29 is attached to the tip of the rod 28 so as to be rotatable in the front-rear direction (in the pulling direction). A hole 29a is provided in the U-shaped bottom portion of the hitch member 29, and the pin 51 (see FIG. 10) of the attachment portion 50 of the lift device 18 provided at the rear portion of the machine body 5 is provided in the hole 29a. The work part traction device is connected to the machine body 5 by inserting a coil spring (not shown) into the pin 51 and inserting a retaining pin into a hole 51a provided near the tip of the pin 51. It In this case, if the lift device 18 is lowered to the maximum,
The pin 51 is just fitted into the hole 29a of the hitch member 29.

Since the present embodiment has the above-mentioned configuration, the planting part
When towing 19, first wheel device 30 and caster device
40 is attached to the horizontal axis 27 of the planting section 19. Then, the pulling rod 28 is connected to the holding member 43 of the caster device 40, and the lift device of the machine body 5 is further lowered to the maximum so that the pin of the attaching portion 50 is
51 is passed through the hole 29a of the hitch member 29 at the tip of the rod 28, a spring is put on the hole 29a, and the retaining pin is inserted into the hole 51a of the pin 51 to prevent the retaining. Is completed.

When the airframe 5 is moved forward, the pneumatic tire is used on the side where the weight of the planting portion 19 is offset, so that the airframe is smoothly towed. Therefore, the towing torque of the airframe during towing is small, and As is clear from FIGS. 4 and 9, since the caster device 40 side is slightly higher and the wheel device 30 side is lower, the weight of the caster device 40 is further reduced, which makes it easier to change the direction. There is.

In addition, since the hitch member 29 is rotatable frontward, rearward, leftward and rightward with respect to the machine body 5 as described above, even when the working portion 19 is towed, it can be smoothly towed as shown in FIG. It also follows lateral movement.

In addition, when the working unit is stored in a warehouse after towing,
When the hitch member 29 is detached from the attachment part 50 of the lift device 18 and the tow rod 28 is pushed into the working part 19, the rod 28 slides in the holding member 43 of the caster device 40 and its end. Is held by the holding member 33 of the wheel device 30 and stops. Therefore, when not pulling, pull the tow rod.
The 28 can be pushed into the working section 19 so that it does not get in the way and can be pulled out and used whenever necessary.

Further, during towing, a connecting pipe 49 as shown in FIGS. 4 and 9 may be provided between the connecting members 35 and 45 provided on the wheel device 30 and the caster device 40 to strengthen the towing device. it can.

Further, when the working unit 19 is pulled to the field and the working unit 19 is attached to the lift device, the wheel device 30 and the caster device 40 that have been removed are, as shown in FIG. 6 to FIG. Side steps 16,1 located on the left and right sides of the driver's seat 11
It can be stored and stored by screwing it to 6, which also serves as a guard when seedlings are supplied, and it is convenient because there is no need to consider other storage locations.

Furthermore, by using the wheel device 30, the caster device 40, the towing rod 28, etc., in addition to the towing of the planting section 19 of the riding rice transplanter 1, a handy device for carrying a device on which other fertilizers or seedlings are placed. It can also be used as a trailer.

In the eight-row planting rice transplanter 1 according to this embodiment, it is difficult to hang the storage seat cover when the working unit 19 is still attached to the lift device 18, but if the separation unit is separated by the towing device, the planting unit is not installed. The seat cover can be hung separately for 19 and for the main body of the machine body 5, and the attachment / detachment can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view of a work unit traction device according to the present invention mounted on a work unit, FIG. 2 is a view showing a wheel device, and FIG. 3 is a view showing a caster device. FIG. 4 is a side view of the working unit towing device, FIG. 5 (a) is a front view of the wheel mark erasing device, and FIG.
Figure (b) is a side view thereof. FIG. 6 is a side view of the riding work machine, FIG. 7 is a plan view thereof, and FIG. 8 (a) is a front view of the wheel device and the side steps of the machine body stored and stored,
Figure (b) is a side view thereof. FIG. 9 is a side view showing a state in which the towing device is connected to the machine body, FIG. 10 (a) is a front view of the attachment portion, and FIG. 10 (b) is a side view thereof. 1 ... Riding work machine (passenger rice transplanter), 5 ... Traveling machine (machine), 18 ... Lifting link device, 19 ... Working part (planting part), 30 ... Wheel device, 31 ... Tire, 40 …… Caster device, 41 …… Caster.

Claims (1)

(57) [Scope of utility model registration request] 1. A working unit towing device comprising a working unit attached to the rear part of a traveling machine body via an elevating link device so as to be attachable / detachable to and from the traveling machine body in a retractable manner. A wheel device having a pneumatic tire, which is rotationally fixed in a horizontal plane, and a caster device having wheels, which can be rotated in a horizontal plane, are provided within the width of the working unit in the front-rear direction at the time of towing and the position of the center of gravity of the working unit. The caster device is located on the front side with the wheel device positioned on the rear side so as to be attachable and detachable, and the wheel device is arranged at a position close to the center of gravity of the working part and the caster device is arranged at a position distant from the center of gravity of the working unit. A working unit traction device characterized in that