JPS59154909A - Cultivating part mounting apparatus in walking type agricultural machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilling section mounting device (related to this) which is configured to drive the rotary shaft of the tilling section of a walk-behind agricultural vehicle using a shaft drive system. The vehicle body is configured so that the rotary shaft can be driven even when the machine is set in a horizontal or inclined position and fixed, and the tilling section configured in this manner can be removed from the vehicle body. Then, attach another work machine to the pitch (when attaching it to the machine, open the central vertical hole drilled in the pitch so that the hitch pin can be inserted from above), which improves work efficiency and also keeps the center of gravity of the machine The purpose of the invention is to propose an agricultural vehicle that is low in height and has good maneuverability. A rear cover is fixed to the upper rear surface of the transmission case, and a short shaft is supported rearward on the rear cover. The PTO shaft extends rearward so that the centers are aligned, and the rear part of the short shaft has a pawl or a shaped hole, and the front part of the PTO shaft (this part has a pawl or a hole that engages with the pawl). A special shaped part is provided which is wedged into the special shaped hole Q, and a drive shaft is suspended from the rear part of the PTO shaft via a bevel gear transmission, and these short shafts are connected to the PTO shaft and the drive shaft. The shaft centers are aligned with the left and right center lines of the aircraft, and the PTO shaft and drive shaft are connected at the bottom of the drive shaft via a bevel gear transmission so that the rotary shaft is driven at right angles to the drive shaft. The shaft and the rotary shaft are each supported by a bevel gear case, and the front end of the bevel gear case is located on a circumference centered on the axis of the PTO shaft (through the long hole mounting hole A drilled in this hole). The flange of the bevel gear case is fixedly installed in the mounting hole AG, and the bevel gear case can be rotated around the axis of the PTO shaft with respect to the rear cover. At the same time, the hanging part of the bevel gear case penetrates the rotary frame, and the front end of the rotary frame (here, PT
A front plate having an elongated mounting hole B drilled on the circumference Q centering on the axis of the O axis is fixed, and a fastening AB that is inserted into the mounting hole B allows the rotary to be mounted. The frame is fixed to the hitch so that it can swing left and right around the axis of the PTO shaft, and the fixing device is configured so that the rotary shaft can be driven in horizontal and inclined positions. A and fastening tool B allow the tilling section to be attached to the machine (the attached walking agricultural vehicle). (When inserting this hole, the hitch pin passes through the space behind the short shaft and is located in front of the central vertical hole.) It is obvious that it is arranged in such a way.

In the following, the present invention will be specifically explained based on the illustrative drawings.
), a handle (27), a hitch (23), etc. It is a walking agricultural vehicle. The power of the prime mover (1) is transmitted via the engine pulley (b), the bell seat (29), the input pulley, etc. to the input shaft. )(
This is transmitted. Input shaft -) (This is fixed gear □) , (
84) is fixed, and the fixed gear (34) is in mesh with the intermediate gear), and the fixed gear (&) is fixed and the sliding gear (86) is in mesh with the fixed gear (&) in a sliding manner. It is wedge-fitted into the intermediate shaft (b) so that it can slide. The wheel axle (40) is driven via a transmission device (not shown) that meshes with the transmission gear 09) fixed to the intermediate shaft (b) and the transmission gear (3g), The left and right running wheels (2) and (2)' are driven in the direction of arrow (a) or arrow (b) to move the agricultural vehicle forward or backward.

In addition, the input shaft G32) is a sliding gear (41) for transmitting power to the rotary shaft (4) of the tilling section (3).
b) is slidably wedge-fitted into the fixed gears (14) and (+5) to which the intermediate shaft fg3at is fixed, and meshes with the fixed gears (14) and (+5) by sliding against each other.

A rear cover (6) is fixed to the upper rear surface (bolt 06) of the transmission case (5), and a short shaft (6) is attached to the rear cover (6).
7) is supported toward the rear, and the PTO shaft (8) is supported so that the axial center of the PTO shaft (8) is aligned with the extension line of the axial center of the short shaft (7).
The TO axis (8) extends rearward, and the short axis (7
) is provided with a claw (9) and a claw (river) that engage with each other.In addition, there are two other examples in place of the claw (9) and claw (11), which will be described later in No. 8. A bevel gear A (47) is fixed to the front end Q of the short shaft (7), and the bevel gear A (47) meshes with the bevel gear B (48) fixed to the intermediate shaft (43). The rear end (bevel gear C09) of the PTO shaft (8) is fixed, and the bevel gear C09) is connected to the upper end G2 of the drive shaft (13) to drive the short shaft (7). It meshes with DH and drives the drive shaft (13). Drive shaft (13) is PTO
The rear part of the shaft (8) (bevel gear C09 placed above),
It hangs downward via a bevel gear transmission device consisting of a bevel gear D (50) and the like. And the short axis (7)
The PTO shaft (8) and drive shaft (13) are connected to the bevel gear case (+4) so that the axes of the PTO shaft (8) and drive shaft (13) are aligned with the left and right center line X-XI of the aircraft.
The small bevel gear (51) is wedge-fitted into the lower part of the drive shaft (13).
), the large bevel gear (52) meshing with the rotary shaft (4
) Q is fixedly installed so that the rotary shaft (4) is driven at right angles to the drive shaft (13) G2 (this rotary shaft (
4) is supported at the bottom of the bevel gear case (14). In this way, the bevel gear case (14) supports the PTO shaft (8), the drive shaft (13), and the rotary shaft (4), respectively.
) A flange (16) having an elongated mounting hole A (15) drilled on the circumference centered on the axis of the PTO shaft (8) is fixed to the front end of the PTO shaft (8). Mounting hole A (15)
The bevel gear case (14) is fixed to the rear cover (6) by the fastening device A (17) which is engaged so as to be rotatable around the axis of the PTO shaft (8).

The hanging part (1 → of the bevel gear case (14) passes through the rotary frame (19), and the rotary frame (19)
) (this is on the circumference of the radius R centered on the axis of the PTO shaft (8) (this is the mounting hole B (20
) is fixed to the mounting hole B, and the rotary frame (19) is fixed to the mounting hole B by the fastening AB (22) which is inserted into the mounting hole B. Around the axis of the PTO shaft (8) (this is fixed so that it can swing left and right) and the rotary shaft (
4) is configured so that it can be driven in both horizontal and inclined positions. This is what is attached to it. Hituchini)) is Pol) (53)
The rear of the transmission case (5) is fixed to the rear of the transmission case (5), and the hole (54) into which the fixing device B is screwed is bored, and the vertical hole (54) in the center is bored. b)) Both sides (
Vertical holes (60) and (60)' are drilled here. A mounting bracket (55) is fixed to the rear of the lower frame (19), and the mounting bracket (55) is attached to the tail wheel. The supporting column (57) is fixedly attached thereto. rotary l order 4
Various working machines such as tiller claws are attached to the left and right sides of ) depending on the purpose of the work, and tasks such as tilling, intertilling, cultivating soil, and ridge forming are performed. -) is a row recovery cover, -) is a hitch pin for attaching various types of work equipment, (6]) is a pear, ←2) is a field surface, -)
indicates the ridge, (64) indicates the pin hole of the pear (61), and the arrow (c) indicates the direction of rotation of the tiller claws.

FIG. 8 is a cross-sectional view of the main parts explaining another example of the short shaft (7) and the PTO shaft (8), and (10) is the rear part (10) of the short shaft (7).
The irregularly shaped hole (12) carved here is the irregularly shaped part formed by the front end of the PTO shaft (8), and the irregularly shaped hole (10)
It is configured such that the irregularly shaped portion (12) is wedged in and the rotation of the short shaft (7) is transmitted to the PTO shaft (8).

In this specification, the tilling section (3) refers to the aforementioned bevel gear case (14) & the built-in PTO shaft (
8), a power transmission device including a drive shaft (13), a rotary shaft (4), etc., a tilling claw (58) attached to the rotary shaft (4), a rotary frame 09), a rotary cover-), a tail wheel- ) and other major members.

Next, the operating state of the present invention will be explained. First, during normal tillage work, the rotary shaft (4) is rotated so that it is in a horizontal position with respect to the left and right running wheels (2), (2)'. In other words, fastening tool A (17) and fastening tool B@2
) on the hanging part (18) of the bevel gear (14) that can be swung left and right around the axis of the PTO shaft (8).
) hang down, and tighten the fastening tool A (17) and fastening tool B (goods) at the position where the axis of the drive shaft (18) matches the left-right center line x-x3 of the fuselage as shown in Figure 5. The tilling section (3) is fixed in a horizontal position to the traveling vehicle body. And the rotary shaft (4) also has left and right running wheels (2), (2)
It has a horizontal attitude with respect to ′. This state is set in the same posture as a normal walk-behind agricultural vehicle.

Next, operate the transmission mechanism (not shown) to move the sliding gear (2) to the fixed gear (2) and the left and right running wheels (2), (2).
' is set so that it rotates in the direction of arrow (a).Meanwhile, slide gears 01 and (!2) are changed to fixed gears (44) and (b) by operating a transmission mechanism (not shown). After bending and engaging, set the rotary shaft (4) to the desired rotational speed Q, operate the main rotary shaft lever 0, and connect the power of the prime mover (1) via a power connection/disconnection mechanism (not shown). plowing work is carried out.

Next (this), tilt the tilling part (3) and
) are tilted against the left and right running wheels (2), (2 white),
The case of performing ridge cutting work will be explained. As mentioned above, when the fastening tool A (17) and the fastening tool B (22) are loosened and the bevel gear case (14) is rotated to the left around the axis of the PTO shaft (8), The rotary frame (19) through which the hanging part (18) passes also moves two times to the left (at the same time). Then, by tilting the required angle of inclination and tightening the fastening tool A (17) and the mower fastening tool B (22), the tilling section (3) will move against the traveling vehicle body as shown in Figure 9G. Angle I!5 in Figure 4
Tilt to the left by an angle corresponding to I (
2), t2j'G In contrast, the rotary shaft (4) also has an angle θ
Can only be tilted. In this state, if you perform the ridge cutting operation by changing the speed in the same manner as in the normal tilling work described above, the ridge (68) will be removed diagonally Q as shown in Fig. 9 (Fig. 9). There is no need for a special working machine to scrape off diagonally.In this way, the left and right running wheels (2), (2+'
4), the rotary shaft (4) can be tilted while maintaining its axial center line parallel to the axial center line of the wheel axle (40) in plan view Q. Therefore, it does not impede the straightness of agricultural vehicles.

Next, we will explain the case where the tilling section (3) is removed and another working machine is attached to the pitch. First, fastening tool A (
17) and fastening tool B (a), remove the tilling part (3) from the machine body, and attach it to the pear (61), for example, at the pitch), as shown in Figure 6. 6 pin holes ←) facing the vertical hole (25) in the center of the hitch (23), pass the hitch pin (24) through the space behind the short axis (7), and insert it from above the pitch (23). Center vertical hole (25)
All you have to do is insert it, so you can easily attach the pear width and perform the rice cake making work.

Originally, at the time of designing a walk-behind agricultural vehicle, the setting position of Q was set so that various commercially available working machines could be installed and their working performance could be fully demonstrated. Care has been taken to set the position of the central vertical hole (25) and the vertical hole (60) (60) in which the wheel axle (4) is set. The rear dimension (a) and upper dimension (b) (Fig. 6) are dimensions within a certain range (this is customary and is 1.
, specific dimensions [this cannot be set].

Furthermore, the height of the transmission case (5) should be designed to be as low as possible in order to lower the center of gravity of the machine and make the agricultural vehicle easy to maneuver.

Therefore, in the agricultural vehicle according to the present invention in which the rotary shaft (4) of the tilling section (3) is driven by a shaft drive method)
(In this case, the position (C) from the wheel axle (4) of the short shaft (7) that transmits power to the PTO shaft (8) (Fig. 6) is also set to the lowest possible position. What must be done.

When I removed the tiller (3) from the machine and attached another working machine, I found that the hitch pin (2)
)) from above the vertical hole (5) in the center of the pitch (23).
The rear end is located in front of the center vertical hole),
It is important to set the head pin so that it does not interfere with the rear end of the short shaft (7). If short axis (7)
(The rear end is near the center vertical hole (25) or in the center vertical hole)
If it is located further back than the hitch pin (2
4) cannot be inserted from above the pitch, so the hitch pin ring must be inserted from below the pitch upwards, which extremely hinders the ease of attaching and detaching the work equipment. However, the purpose of the present invention is not achieved; instead, the upper position dimension of the short axis (7) (increasing C1 and inserting the hinochi pin below the short axis (7)) G short axis (7
) is set high, the height of the transmission case (5) becomes large, and the center of gravity of the machine becomes high, which impedes the maneuverability of the agricultural vehicle.This is also an object of the present invention. It is not achieved.

As described in detail above, the device for mounting the tiller part in a walk-behind agricultural vehicle according to the present invention (in this case, the tiller part is swung from side to side and G, is set to any position, fixed, and attached to the rotary shaft). Since the rotary shaft is configured so that it can be driven horizontally and in an inclined position, it is of course possible to set the rotary axis horizontally and use it in the same form as a normal walk-behind agricultural vehicle. In fact, if the tilling part is tilted and fixed, the rotary shaft can be tilted relative to the left and right running wheels, so special work such as ridge shaving can be done using ordinary tilling claws without having to prepare a dedicated axoment. It can be done without obstructing the straightness of the hitch, and when the tilling section is removed from the machine and another working machine is attached to the hitch, the hitch pin can be inserted from above the hitch. (This means that it is extremely easy to attach and detach the working equipment, and the workability is good. Also, the center of gravity of the machine body is low, making it easy to maneuver.)

[Brief explanation of drawings]

The attached drawings are drawings illustrating embodiments of the present invention, in which FIG. 1 is a side view of a walk-behind agricultural vehicle, and FIG. 2 is a side view of a walking agricultural vehicle.
Fig. 5 is a plane sectional view of the main part in Fig. Q -
A side cross-sectional view of the main part in the X-ray, Figure 4 is Z- in Figure 6.
Z line (cross-sectional view of the main part in this section, Figure 5 is along Y-Y in Figure 2)
Figure 6 is a side cross-sectional view of the main part explaining the case where the tiller is removed and the pear is attached. Figure 7 is a side cross-sectional view of the main part of the Figure 8 is a cross-sectional view of the main part explaining the distinction between the short axis and the PTO axis, and Figure 9 is a cross-sectional view explaining the operation when the tilling part is rotated to the left by an angle θ. In the drawing, (1) is the prime mover, (2), (
2)' is the left and right running wheels, (3) is the tiller, (4) is the rotary shaft, (5) is the transmission case, (6) is the rear hole bar, (7) is the short shaft, (8) is the PTO axis, (9) and (11
) is the claw, (10) is the irregularly shaped hole, (12) is the irregularly shaped part, (13
) is the drive shaft, (14) is the bevel gear case, (15)
is mounting hole A, (+6) is flange, (17) is fastener A, (18) is hanging part, (19) is rotary frame, (E) is mounting hole B, (2 is front plate, ( 22) is the fastening device B, J) is the pitch, extension) is the hitch pin, and ni) is the central vertical hole. Patent Applicant Representative Patent Attorney Manseki Ike 3 Figure Z Procedural Amendment (Spontaneous) January 19, 1980 Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of Case 1989 Patent Application No. 29961 2, Invention Name of the installation device for the tilling part of a walking type & tiller 3, Relationship with the case of the person making the amendment Patent applicant address 144-2-4 Gomen Fq, Nankoku City, Kochi Prefecture
Address: 2551 Keraotsu, Kochi City, Kochi Prefecture Name (6
253) Patent land Complaint 5, Subject of amendment 6, Contents of amendment (1) In the second line from the end of specification box 5, "than the central vertical hole" is replaced with "it is not possible to insert it from above the central vertical hole." Correct it so that it is better than the vertical hole in the center. (2) On page 7 of the specification, line 8 G, the claw (lO) that engages with the claw (9) is replaced by "the claw (9) is engraved and the PTO shaft (
The front part of 8) has a claw (9) and a claw that engages with the other (+1) J! correct. (3) "Wheel axle (4)" on page 16, line 16 and page 14, line 5 of the specification is replaced with "wheel axle (40) J" respectively.
Correct.

Claims (1)

[Claims] The power of the prime mover (1) is transmitted to the left and right running wheels (2), (2)' and the rotary shaft (4) of the tiller (3) via the transmission case (5), and the power is transmitted to the rotary shaft (4) of the tilling section (3). The Q hitch (23) is fixed and the upper rear surface G of the transmission case (5)
This rear force/% -F6+ is fixed, and the rear cover (6
) has a short shaft (7) supported toward the rear, and the short shaft (7)
The Q-PTO shaft (8) is extended rearward so that the axis of the Q-PJO-axis (8) coincides with the extension of the axis of the short shaft (7), and a claw ( 9) or irregularly shaped holes (10
) is engraved on the front G of the PTO shaft (8).
A claw (11) that engages with this or a shaped hole (10) and a shaped part (12) that is wedged are provided, and the PTO shaft (8
) is connected to the drive shaft (
13) are hanging down, and the axes of these short shafts (7), PTO shaft (8), and drive shaft (+3) all coincide with the left-right center line X-XQ of the aircraft, and the drive shaft (13)
The lower part of the rotary shaft (4
) is driven in a right-angled attitude to the drive shaft (+a) & .
The front end of the bevel gear case (14) has an elongated mounting hole A (15) drilled on the circumference centered on the axis of the PTO shaft (8). A flange (16) is fixedly attached to the mounting hole A (+5), and the bevel gear case (14) is attached to the rear cover +61 ) is rotatable around the axis of the bevel gear case (14), and the hanging part (18) of the bevel gear case (14) is attached to the roke frame (19).
) The front end of the rotary frame (19) has an elongated mounting hole B-) drilled on the circumference centered on the axis of the PTO shaft (8). front plate (2)
1) is fixedly installed and is inserted into the mounting hole BH).
The rotary frame (19) is attached to the rotary frame (19) so that it can swing left and right around the axis of the PTO shaft (8), and the rotary frame (19) is attached to the shaft (4) horizontally and tilted. It is configured so that it can be driven in the posture, and the fastening tool A (
17) and the fastening tool -13022) to which the tilling part (3) is attached to the machine body. To attach another work machine, when inserting the hitch pin (211) into the central vertical hole (c) drilled at the pitch (2B), the hitch pin (■) should be inserted into the short shaft (7). The rear end of the short shaft (7) is located in front of the central vertical hole (G) so that it can be inserted from above the central vertical hole (-) through the space behind the central vertical hole (G). A device for mounting a tiller on a walk-behind agricultural vehicle, characterized in that it is arranged as follows.