JP2000050720A - Tread width varying mechanism of tea plantation managing machine traveling on rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tread width varying mechanism of a new tea plantation managing machine furnished with grooved wheels, traveling on rail, capable of adjusting the spacing between wheels in lateral direction, i.e., the tread width of the tea plantation managing machine traveling on rail in high accuracy without causing backlash and enabling the stable management of tea plantation without generating e.g. the strain of the machine body even on a slope. SOLUTION: A leg post frame 5 supporting a rail R is rotatably attached to a bestriding frame 4 positioned on a tea ridge A in a manner to enable the change of the lower end of the leg post frame 5 according to the width of the rails. The bestriding frame 4 is provided on the upper face with an equalizer ring 11 attached in a state rotatable on a vertical axis. The tops of the right and left leg post frames 5 are connected to the right and left ends of the equalizer ring 11 through a connection rod 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail running type tea garden management system, and more particularly to a tread size changing mechanism for changing a wheel interval width according to a difference in rail width.

[0002]

BACKGROUND OF THE INVENTION As a means for streamlining tea garden management work, there is a rail-running tea garden management device. This method enables automatic running and automatic return, etc., due to the stability of the running track, and also brings about stability of the cut surface. By the way, the rail width of the rails laid on both sides of the tea ridge is slightly different not only for each tea plantation but also for each tea ridge. Therefore, the tread of the rail traveling type tea plantation management device must be adjusted to that. Conventionally, as this method, one was a grooved wheel holding the rail and the other was just a wide roller, but this method works smoothly in a flat tea garden, but running on slopes is stable. There was a drawback of lack of sex.

For this reason, the left and right wheels are provided with grooves,
It has been proposed that an equalizer mechanism is used to evenly open a pillar frame on which wheels are mounted so that the wheels can cope with a change in rail width.
No. -40778. However, the equalizer mechanism in this case employs a vertical slide type equalizer, and the slider in the equalizer is designed with some clearance in order to allow its smooth movement. For this reason, rattling in the slider portion cannot be prevented, and in particular, in the case of a sloping land, the aircraft has a disadvantage that the entire body is greatly inclined and distorted toward the valley side, and a stable plucking operation is sufficiently performed on the sloping land. There is no problem.

[0004]

[Technical Problems Attempted to Be Developed] The present invention has been made in view of such a background, and the wheel spacing in the width direction, that is, the tread size in a rail-running tea plantation management device provided with grooved wheels can be reduced without rattling. An attempt was made to develop a tread size variable mechanism in a novel rail-running tea garden management device that can be adjusted with high accuracy and can perform stable tea garden management work without causing distortion of the aircraft even on an inclined ground.

[0005]

In other words, the tread size variable mechanism in the rail traveling type tea garden management device according to the first aspect of the present invention is a work vehicle that runs across a rail laid on both sides of a tea ridge. A rail-running tea garden comprising a tea garden management machine mounted on the work cart, wherein the wheels of the work cart are configured to be evenly spread left and right according to the difference in rail width dimension. In the management device,
The pillar frame supporting the rail is rotatably attached to a straddling frame located on a tea ridge so that its lower end can be changed according to the rail width, while the upper surface of the straddling frame is An equalizer link rotatably mounted around a vertical direction is provided, and an upper part of the left and right pillar frames and left and right ends of the equalizer link are connected via a connecting rod. is there. According to the present invention, since the sliding member is not used in the tread size variable mechanism, there is no backlash on the whole, and even on an inclined ground, the aircraft does not tilt toward the valley side and the frame operates without any trouble without being distorted. In addition, the accuracy of the tea garden management work such as the plucking work is increased, the number of leaks is reduced, and the efficiency of the work can be improved.

The tread size variable mechanism in the rail running tea garden management device according to the second aspect is characterized in that, in addition to the above requirements, two sets of the equalizer link and the connecting rod are provided. According to the present invention, as compared with the case where the set of the equalizer link and the connecting rod is configured as one set, the pillar frame is more firmly supported, and the strength of the device is increased.

According to a third aspect of the present invention, the tread size variable mechanism in the rail traveling type tea garden management device further includes a requirement that the two sets of equalizer links have a common rotation axis and the right and left pillar frames have a common rotation axis. It is characterized in that it intersects the X shape at the intermediate position. According to the present invention, the layout of the equalizer link and the connecting rod is simple and symmetric, and a balanced aspect is obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. The reference numeral 1 in FIG. 1 denotes a rail traveling type tea garden management device to which the present invention is applied. The traveling vehicle 2 travels on a rail R laid on the side of a tea ridge A, and the traveling vehicle 2 includes: And a tea garden management machine 3 which is installed and performs a tea garden management operation. The work cart 2 is provided with a tread size varying mechanism 10 according to the present invention. In the present embodiment, the tea garden management machine 3 employs a full-scale plucking machine that plucks the tea ridge A at once over the entire area in the width direction. Of course, in addition to the above, a spraying machine for chemicals, a furrowing machine for tea ridges, a cultivator, a fertilizer, and the like may be mounted on the work cart 2 and may be implemented. The device indicated by the reference numeral is a laterally movable cart D, which sends out the rail traveling tea garden management device 1 onto the rail R while sequentially moving laterally on the headland.

First, the work cart 2 will be described. The work cart 2 includes a gate-shaped straddling frame 4 straddling the upper part of the tea ridge A,
A pillar frame 5 rotatably connected to the left and right ends,
Adjust the left and right widening angle of the pillar frame 5 to adjust the rail R
And a tread size changing mechanism 10 that changes the tread size according to the width of the tread.

Next, the straddling frame 4 will be described. The straddle frame 4 supports the tea garden management machine 3 and, as an example, places a fresh tea leaf storage bag S for accommodating plucked fresh tea leaves, and is formed in a gate shape as a whole, and a lower rear side. A panel material is stretched over the frame portion of the above, and a mounting table 7 for mounting the green tea leaf storing bag S is formed.

Next, the pillar frame 5 will be described. The pillar frame 5 is for supporting the wheels 52A rolling on the rail R, and is rotatable in the left-right width direction by the rotating shaft 4a at the intermediate height position on both sides of the straddling frame 4. And the lower end can be adjusted according to the rail width. The left and right pedestal frames 5 are roughly divided into a pedestal main frame 51, and a wheel frame 52 fixedly provided at a lower end of the pedestal main frame 51;
A connecting frame 53 is fitted to the pillar main frame 51 so as to be slidable up and down and is rotatably attached to the straddle frame 4.

Specifically, the pillar main frame 51 has a gate shape, and a wheel frame 52 is fixedly provided at the lower end thereof. The wheel frame 52 has wheels 52A with rail grooves.
Are provided one by one in front and back, and as an example, one drive motor 52 is provided for each of the left and right wheel frames 52.
B is provided. The connection frame 53 includes an outer slide holding frame 55 and an inner rotating connection frame 54. The rotation connection frame 54 has a rectangular shape as a whole, has a horizontal bar 54A and a vertical bar 54B, and is rotatably connected to the straddle frame 4 at a substantially intermediate position of the vertical bar 54B. A slide holding frame 55 is fixedly provided outside the vertical bar 54B in the rotation connection frame 54. Slide holding frame 5
5 is slidably fitted to the vertical bar 54B, so that the connecting frame 53 is vertically movable.
As a result, the straddling frame 4 that is rotatably supported by the connecting frame 53 is also capable of moving up and down.

The height position of the straddle frame 4 is adjusted by a height adjustment handle 6A having a ball screw mechanism. Specifically, the upper horizontal frame portion of the pillar main frame 51 and the lower horizontal bar 54A of the rotary connection frame 54 are connected by a ball screw 6B. As a result, by turning the height adjustment handle 6A, The height of the straddling frame 4 from the rail R is adjusted, and the working height position of the tea garden management machine 3 can be changed.

Next, the tread size changing mechanism 10 which is a feature of the present invention will be described. Tread size variable mechanism 10
Is composed of a structure in which the pillar frame 5 and the straddling frame 4 are rotatably connected, an equalizer link 11, and a connecting rod 12.

The equalizer link 11 is a flat rod-shaped member. As shown in the plan view of FIG. 3, the two equalizer links 11 intersect at the center of the equalizer link 11 substantially at the center of the upper surface of the straddle frame 4 in an X-shape. It is rotatably connected by one driving shaft 13. One end of a linear rod-shaped connecting rod 12 is rotatably connected to the left and right ends of these two equalizer links 11, and the other end of this connecting rod 12 is turned to the upper end of a connecting frame 53 in the pillar frame 5. It is connected freely. The length of these four connecting rods 12 is the same, so that when the equalizer link 11 is connected at the center and one of the pillar frames 5 is opened and closed, the other pillar is responded to it. Frame 5
Also open and close at the same angle, and the left and right pedestal frames 5 always open uniformly to the left and right.

The rail-running tea garden management apparatus 1 having the tread size variable mechanism 10 according to the present invention has the above-described specific form, and this operation mode will be described below.

(1) At the time of preparation for carrying in to the tea ridge FIG. 4A shows a preparation state for carrying in to the tea ridge where the rail traveling type tea garden management device 1 is mounted on the upper surface of the laterally moving cart D. is there. When sending out the rail traveling type tea garden management device 1 onto the rail R, first, the rail width of the bogie rail D1 on the upper surface of the laterally moving bogie D is adjusted and fixed to the rail width laid on the side of the tea ridge side. At this time, in the rail-traveling tea garden management device 1, since the pillar frame 5 can be freely expanded by the tread size variable mechanism 10, the pillar frame 5 is adjusted to the rail interval of the bogie rail D1 supported by the wheels 52A. It turns in the direction perpendicular to R and opens and closes equally on the left and right. In addition, the installation height of the tea garden management machine 3 is adjusted in accordance with the height of the tea ridge A by rotating the height adjustment handle 6A.

(2) At the time of traveling on a rail While the rail traveling tea garden management device 1 is traveling on the rail R, even if the rail width is slightly widened or narrowed, the rail traveling tea garden management is performed accordingly. The pillar frame 5 supporting the rail R of the device 1 opens and closes, and the tread size is constantly adjusted. Since the tread size changing mechanism 10 of the rail traveling tea garden management device 1 does not have a structure having a sliding member or the like, there is no backlash in the entire device, and the rotating shaft 13 of the equalizer link 11 is always at the center of the pillar frame 5. Located in the department. Therefore, even on a slope, the railroad-type tea garden management device 1 is not distorted as a whole because the machine body is tilted to the valley side, and stable running and plucking work can be performed.

[0019]

Other Embodiments Although the basic embodiment of the present invention is as described above, various other modifications can be made. FIG. 5 shows an embodiment in which a set of an equalizer link 11 and a connecting rod 12 of a tread size variable mechanism 10 is provided at a distance from each other. In addition, it is also possible to carry out with three sets of before, after, and after, or with another number, for example, one set or four sets.

[0020]

According to the tread dimension variable mechanism in the rail traveling tea garden management device according to the first aspect, the pillar frame 5 supporting the rail R is configured such that the lower end thereof can be changed according to the rail width. Straddling frame 4 located on A
On the other hand, the upper surface of the straddling frame 4 is provided with an equalizer link 11 rotatably mounted on the upper surface of the straddle frame 4 so as to be rotatable about a vertical direction. Is connected to the left and right ends via the connecting rod 12, the tread size variable mechanism 10 has no rattling, and the rail running tea garden management device 1 tilts the body toward the valley side and the frame is distorted even on the sloped ground. It works without any problems. The precision of the tea garden management work such as plucking work is increased, the number of leaks is reduced, and the improvement of work efficiency can be expected.

According to the tread size variable mechanism in the rail-running tea garden management device according to the second aspect, since the set of the equalizer link 11 and the connecting rod 12 is two sets, the pillar frame 5 is firmly supported. The device has excellent strength.

According to the tread size variable mechanism in the rail running tea garden management device according to the third aspect, since the rotating shafts 13 of the two sets of equalizer links 11 are common and intersect in the X-shape, the equalizer links 11 And connecting rod 12
Is simple and symmetrical, and a balanced aspect is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which tea leaves are plucked by a rail-running tea garden management device provided with a tread size variable mechanism according to the present invention.

FIG. 2 is a side view of a rail traveling tea plantation management device provided with a tread size variable mechanism according to the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is a rear view showing the operation mode according to the first embodiment;

FIG. 5 is a plan view showing another embodiment of the tread size variable mechanism according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rail traveling type tea garden management device 2 work cart 3 tea garden management machine 4 straddling frame 4 a rotating shaft 5 pedestal frame 6 A height adjustment handle 6 B ball screw 7 mounting table 10 tread size variable mechanism 11 equalizer link 12 connecting rod 13 rotation Shaft 51 Pillar main frame 52 Wheel frame 52A Wheel 52B Drive motor 53 Connecting frame 54 Rotating connecting frame 54A Horizontal bar 54B Vertical bar 55 Slide holding frame A Tea ridge D Horizontally moving cart D1 Dolly rail R rail S

Claims (3)

[Claims] 1. A work cart that runs across rails laid on both sides of a tea ridge, and a tea garden management machine mounted on the work cart. In a rail-traveling tea garden management device configured to be evenly spread left and right according to a difference in dimensions of a rail width, a pillar frame supporting the rail has its lower end changed according to the rail width. An equalizer link rotatably mounted on the top of the overlying frame so as to be rotatable about a vertical direction on the upper surface of the overlying frame, and A tread size variable mechanism in a rail-running tea garden management device, wherein an upper portion of a pillar frame and left and right ends of an equalizer link are connected via connecting rods. 2. The tread size varying mechanism in the rail traveling type tea garden management device according to claim 1, wherein two sets of the equalizer link and the connecting rod are provided. 3. The rail-running tea garden management device according to claim 2, wherein the two sets of equalizer links have a common rotation axis and cross in an X-shape at an intermediate position between the left and right pillar frames. Tread size variable mechanism.