JP2936313B2 - Rail type double-sided hemming machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tea garden management device that cuts left and right ridges while moving between tea ridges when a tea garden management rail is laid between the tea ridges. The present invention relates to a double-sided hem cutter of a tea ridge, which can easily enter and exit a rail laid in a furrow and can maintain a stable posture when traveling on the rail.

[0002]

BACKGROUND OF THE INVENTION As shown in FIG. 10, a rail-type double-sided hemming machine 1 'has a configuration in which a single wheel 5' with a double-sided flange is provided at the center of two cutting blades 4 '. The wheels 5 'are run on rails R laid therebetween to cut the tea trees on both sides. However, such a conventional rail-type double-sided hem cutter 1 'has various problems as described below due to its structure. First, in order for the rail type double-sided hem cutter 1 'to enter the rail R or to escape from the rail R, it is necessary to lift the body of about 10 kg, which is not only a very difficult task, but also the body. Is equipped with a sharp cutting blade 4 ', so that if it falls down, the operator is at risk.

As shown in FIG. 10 (c), when the free end side of the cutting blade 4 'protrudes forward, the branches and leaves jump upward and reach the cutting edge of the cutting blade 4'. The uncut leaves may be left uncut, or the cut marks may be uneven. To prevent such uncut leaves, see FIG.
The state in which the drive end side of the cutting blade 4 'is inclined forward as shown in (d) is preferable because the branches and leaves reach the blade base without escaping.
As shown in FIG. 10B, it is difficult to maintain a posture in which the drive end side is inclined forward due to the effect of the pitching moment applied to the body due to the resistance of the branches and leaves. Further, as shown in FIG. 10A, it is difficult to maintain the parallel state of the airframe due to the rolling moment applied to the airframe due to the resistance of the branches and leaves. As a result, the posture of the cutting blade 4 'becomes unstable, and the cutting marks are irregular.

[0004]

Under such circumstances, the inventor can easily enter the rail and escape from the rail.
Another technical object of the present invention is to develop a new rail-type double-sided hem cutter capable of trimming the mowing marks.

[0005]

According to a first aspect of the present invention, there is provided a rail-type double-sided hem cutter having a pair of right and left clipper-type cutting blades driven by a prime mover having an upper drive end and a lower free end. In the tea tree management device, wherein the free end side is configured to be freely openable around the drive end side, a front guide wheel rolling on a rail laid between the left and right cutting blades and below the tea ridge. And a rear guide wheel, and a grounding wheel is provided so as to sandwich a track common to the front and rear guide wheels from left and right, and the grounding wheel is in a state where the front guide wheel or the rear guide wheel is engaged with the rail. in a state where the ground almost, further
The grounding wheel is either the front guide wheel or the rear guide wheel.
Or, it is characterized by sharing an axis with both . According to the present invention, at the time of traveling, the body is supported by the rail at the two points of the front guide wheel and the rear guide wheel, so that the body does not lean back and forth under the influence of the pitching moment applied to the body. In addition, since the ground contact wheel almost touches the ground with the front guide wheel or the rear guide wheel engaged with the rail, it does not tilt left and right under the influence of the rolling moment applied to the aircraft,
The posture in which the cutting blade faces the tea ridge can always be kept constant. Further, since the grounding wheel is supported by one or both of the front guide wheel and the rear guide wheel without providing a support rod dedicated to the grounding wheel, the configuration of the entire apparatus can be simplified.

According to a second aspect of the present invention, in addition to the above requirements, in addition to the above requirements, the cutting blade maintains a state where the drive end side is inclined forward. ADVANTAGE OF THE INVENTION According to this invention, a branch leaf does not escape and reaches a cutting edge without escaping upward of a branch leaf.

According to a third aspect of the present invention, in addition to the above requirements, one or both of the front guide wheel and the rear guide wheel are provided so as to be adjustable in height. I do. ADVANTAGE OF THE INVENTION According to this invention, the position of the height direction which a cutting blade faces a branch and the leaf and the forward inclination angle of a cutting blade can be set freely. The object of the present invention is achieved by means of the configuration of the invention described in each of the claims.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on the illustrated embodiments. Reference numeral 1 denotes a rail-type double-sided hem cutter 1 of the present invention, which includes a prime mover 2 serving as a drive source as a main member, and a gear or an eccentric shaft or the like that drives each member by obtaining the output of the prime mover 2. The vehicle comprises a drive unit 3 serving as a main body, a cutting blade 4 extending below the drive unit 3, wheels 5 for entirely supporting the rail type double-sided hem cutter 1, and an operation handle 6.

These are integrally assembled via a frame member. In this embodiment, there is substantially no member that can be individually referred to as a frame member. Rather, for example, a housing or the like of the drive unit 3 is used as a part of a strength member, and a bracket or the like is appropriately connected thereto. Each member is integrally connected.

First, the member which substantially acts as a frame member will be described. The mounting plate 26 is welded to the lower end of the cutting blade rod 7 and the wheel rod 8 is attached to the mounting plate 26.
Is connected. Further, a mounting plate 32 is welded to the wheel rod 8, and the front guide wheel 9 is connected to the mounting plate 32. The members described below are attached to such a member that substantially acts as a frame member.

First, a relay gear box 11 and a main gear box 12, which form an outer shell member of the drive unit 3, are connected in series to a crankcase 10, which is an outer shell member of the prime mover 2, and these are connected in series. It is connected integrally by a bolt or the like as appropriate. A cutting blade support 23 is connected to the main gear box 12, and an L-shaped motor bracket 13 is provided above the driving unit 3. The motor bracket 13 is attached to the upper end of the cutting rod 7. The set position is attached to the slit 15 of the sliding plate 14 by a clamp bolt 16 so as to be adjustable.

On the other hand, a handle bracket 17 having a wing-plate-shaped rising portion is provided at an upper end of the wheel rod 8, and a handle bar 19 is attached via a serration 18 so that a set angle can be adjusted. The handle bar 19 is formed with a guard bar 20 formed on the near side of the pair of left and right square members so as to further connect them, so that various gripping positions during operation can be selected. Further, a clamp release 2 for tightening the serration 18 with a so-called one-touch operation is provided at the serration 18.
1 is provided. Further, a throttle lever 22 is provided for the operation handle 6 to set the rotation of the prime mover 2.

The wheel rod 8 is a mounting plate 2 provided on the cutting blade rod 7.
6 is supported so that the mounting angle can be set freely while being supported by the shaft 6. A bolt protruding from the wheel rod 8 is fitted into an arc-shaped adjustment hole 24 provided in the mounting plate 26. The clamp nut 27 is screwed into the bolt, and the clamp nut 2
7, the wheel rod 8 is fixed.

The cutting blade support 23 has an expansion adjusting portion 28 provided with two plate-shaped members in the middle thereof, and these plate-shaped members have arc-shaped adjustment holes 29, respectively. A bolt protruding from the cutting blade rod 7 is fitted into the adjustment hole 29, the clamp nut 30 is screwed into the bolt, and the clamp nut 30 is tightened in a state where the widening angle is appropriately set. The cutting blade 4 is fixed.

The mounting plate 32 has an arc-shaped adjusting hole 3.
1 and the front guide wheel 9 is supported here.
A bolt protruding from the front guide wheel 9 is fitted into the adjustment hole 31, and the clamp nut 34 is screwed into the bolt. Then, the clamp nut 34 is tightened in a state where the widening angle is appropriately set, and the front guide wheel 9 is fixed.

As shown in FIG. 4 (a), a rear guide arm 35 is telescopically fitted in the wheel rod 8, and a slit 25 provided on one surface of the wheel rod 8 is provided.
The bolt 36 fixed to one surface of the rear guide wheel arm 35 is slid, and the bolt 36 is fixed by tightening the clamp nut 37 to adjust the vertical dimension of the rear guide wheel arm 35. To do. The vertical dimension adjusting mechanism of the rear guide wheel arm 35 is not limited to the stepless type as described above, and may be a wheel rod 8 as shown in an enlarged manner in FIG.
Bolt holes are provided in
It is also possible to adopt a stepped configuration in which the guide wheel arm 35 is fixed after the A is screwed into the wheel rod 8 and the guide wheel arm 35 is fixed.

At the end of the rear guide wheel arm 35, as shown in FIG.
At the left and right of the rear guide wheel 5R.
It supports two ground wheels 5S that share an axis with R. The diameter of the grounding wheel 5S is set such that the rear guide wheel 5R is in contact with the rail R and grounds on the ground surface GL. However, since the distance between the upper surface of the rail R and the ground surface GL is not always constant, the grounding wheel 5S may be in a floating state or the rear guide wheel 5R may not contact the upper surface of the rail R.

As shown in FIG. 4 (a), the front guide wheel 9 is provided with a front guide wheel arm 38 which is extendable and retractable. Slit 3
3, a bolt 39 fixed to one surface of the front guide wheel arm 38 is slid, and the bolt 39 is fixed by tightening a clamp nut 40 to adjust the vertical dimension of the front guide wheel arm 38. It can be so. The vertical dimension adjusting mechanism of the front guide wheel arm 38 is a stepless type as described above, and a bolt hole is provided in the front guide wheel rod 9 stepwise as shown in an enlarged manner in FIG. The front guide wheel arm 38 fitted inside the front guide wheel rod 9 may be fixed in a stepwise manner by screwing the clamp bolt 40A here. A front guide wheel 5F with a double-sided flange is supported at the tip of the front guide wheel arm 38. In the present embodiment, the front guide wheel arm 38 is a so-called cantilever type provided on one side, but may be a fork-like double-support type as appropriate. Further, the rear guide wheel arm 35 is a double-supported type, but may be a cantilever type.

Next, the operation mechanism of the cutting blade 4 supported by the cutting blade support 23 and the cutting blade rod 7 will be described. First, as shown in FIGS. 5 and 6, the crankshaft 50 of the prime mover 2 is connected to a centrifugal clutch 51 housed in the relay gear box 11, and a drive shaft 52 is provided on the output side of the centrifugal clutch 51. With such a configuration,
The centrifugal clutch 51 is actuated and the drive shaft 52 is driven only when the prime mover 2 has reached a certain rotational speed or higher.

On the other hand, a pinion 53 is provided in the main gear box 12 at the tip of the drive shaft 52, and an eccentric driven gear 54 is provided so as to mesh with the pinion 53. This eccentric driven gear 5
An eccentric shaft 55 having a common axis is integrally mounted on the eccentric shaft 4, and an eccentric shaft 55 is provided on the eccentric shaft 55, which is an upper and lower two eccentric plates 56 that substantially perform eccentric movement. The two eccentric plates 56 are configured such that the phases thereof are different from each other by 180 °.
A relay plate 58 provided at the drive-side end of the cutting blade 4 is connected to the free end of the cutting blade 7. When the eccentric plate 56 moves eccentrically, the pair of connecting rods 57 reciprocate in the crossing direction, giving the clipper 4 a clipper-like motion.

An eccentric cover 59 integral with the cutting blade support 23 is provided so as to substantially surround the eccentric shaft 55, and a part thereof extends downward to form a cutting blade guide 60.

Although not described in detail, the cutting blade 4 is slidably supported at an appropriate position with respect to a guide pin protruding from the cutting blade guide portion 60 to perform a so-called clipper motion. . In addition to the drive structure of the cutting blade 4 described above, various configurations such as a configuration in which power is transmitted using a combination of a bevel gear and a universal joint can be employed.

The rail-type double-sided hem cutter 1 of the present invention has the above-described configuration, and the use of the same will be described below. (I) Dimension setting The rail-type double-sided hemming machine 1 has a track surface at the center between the tea ridges L as an example, while traveling on a rail R laid at a height of more than ten centimeters from the ground surface GL. In order to cut the bottom of the tea ridge L, the mounting position of the drive unit 3 and the spread angle of the cutting blade 4 are set according to the shape of the tea ridge L, and the cutting blade 4 is in a state where the driving end side is inclined forward. Next, dimensions of the mounting angle of the wheel rod 8, the mounting angle of the front guide wheel 9, the protruding length of the rear guide wheel arm 35, and the protruding length of the front guide wheel arm 38 are set.

(Ii) Entry into the Rail Next, the motor 2 is driven, the throttle lever 22 is appropriately adjusted, and the cutting blade 4 is given a clipper-like motion. Then, as shown in FIG. 7 (a), the rail-type double-sided hem cutter 1 faces the starting end of the rail R laid between the ridges for cutting. Then, as shown in FIG.
Is lowered, the body tilts rearward with the grounding wheel 5S as a fulcrum, and the front guide wheel 5F rises. At this time, the weight of the rail-type double-sided hem cutter 1 is supported only by the grounding wheel 5S. While maintaining this state, the front guide wheel 5F is moved to the rail R
, The weight of the rail-type double-sided hem cutter 1 is supported by the rail R and the ground surface GL. When the vehicle further advances from this state, the rear guide wheel 5R meshes with the rail R as shown in FIG. 7C, and the rail-type double-sided hem cutter 1 is set on the rail R. Incidentally, in order to smoothly perform the operation of tilting the aircraft rearward with the grounding wheel 5S as a fulcrum, an appropriate brake is provided on the grounding wheel 5S, an appropriate lever is provided on the operation handle 6, and the brake and the lever are connected by a wire. The grounding wheel 5 by operating the lever.
S may be locked.

(Iii) Hem Cutting Work Next, a description will be given of an embodiment in which the hemming of the tea ridge L is performed from this state. In this state, in the rail-type double-sided hem cutter 1, the front guide wheel 5F and the rear guide wheel 5R mesh with the rail R to secure a course. The hemming work can be performed without requiring special considerations such as modifying In addition, since the driving end side of the cutting blade 4 can be kept in a forward tilted state without being tilted back and forth under the influence of the pitching moment applied to the aircraft, the branches and leaves are prevented from jumping up, It is surely taken into the blade edge and cut, so that there is no uncut portion. Further, since the grounding wheels 5S are provided in two rows, the grounding wheels 5S are not inclined left and right under the influence of the rolling moment applied to the machine body, and the posture in which the cutting blade 4 faces the tea ridge can be maintained in a constant state.

(Iv) Escape from Rail Next, the manner of escape from the rail R will be described. The rail-type double-sided hem cutter 1 that has passed the end of the tea ridge L eventually reaches the end of the rail R. Then, as shown in FIG. 7 (d), the operator grasps the operation handle 6, tilts the body forward with the grounding wheel 5S as a fulcrum, lowers the front guide wheel 5F, and makes it contact the ground surface GL. At this time, rail type double-sided hem cutter 1
Is held by the grounding wheel 5S, so that the operator can easily make a pivotal movement about the grounding wheel 5S. When the grounding wheel 5S does not touch the ground surface GL, the body leans forward with the rear guide wheel 5R as a fulcrum. When the vehicle further advances from this state, as shown in FIG. 7 (e), the rear guide wheel 5R comes out of the rail R and enters a free state in which the trajectory is not restricted. .

As shown in FIG. 8A, the front guide wheel 5F
When the grounding wheel 5S is provided, the body is inclined forward with the grounding wheel 5S as a fulcrum, and the rear guide wheel 5R is raised, so that the vehicle can safely and easily enter the rail R without lifting the body. be able to. By tilting the fuselage backward with the grounding wheel 5S as a fulcrum and lowering the rear guide wheel 5R, escape from the rail R can be performed safely and easily without lifting the fuselage.

Further, when the grounding wheels 5S are provided on both the front guide wheel 5F and the rear guide wheel 5R as shown in FIG. The vehicle can enter and can escape from the rail R simply by proceeding as it is.

Further, as shown in FIG.
The ground support wheel 5S may be disposed between the front guide wheel 5F and the rear guide wheel 5R by using a rod that supports S. Even in such a case, the front guide wheel 5F is lifted by tilting the fuselage rearward with the grounding wheel 5S as a fulcrum, so that it is possible to safely and easily enter the rail R without lifting the fuselage.
By tilting the body forward with the grounding wheel 5S as a fulcrum and lowering the front guide wheel 5F, escape from the rail R can be performed safely and easily without lifting the body. Of course, the grounding wheel 5S may be arranged in front of the front guide wheel 5F, or may be arranged behind the rear guide wheel 5R.

Further, as shown in FIG.
It is good also as composition which does not provide S. Even in such a case, the front guide wheel 5F can be raised by tilting the body rearward with the rear guide wheel 5R as a fulcrum, so that entry to the rail R can be performed safely and easily without lifting the body. By tilting the body forward with the grounding wheel 5S as a fulcrum and lowering the front guide wheel 5F, escape from the rail R can be performed safely and easily without lifting the body.

[0031]

[Other embodiments] The rail-type double-sided hem cutter 1 of the present invention comprises:
Although the configuration described above is a preferred embodiment, various configurations can be taken under the same technical idea. First, as the driving mechanism of the cutting blade, as shown in FIG.
The prime mover 2 is provided substantially at the center of the machine, a drive shaft 52 is provided horizontally with respect to the traveling direction, a bevel gear is provided for the drive shaft 52, and an eccentric driven gear 54 meshes with the bevel gear. By connecting the main gearboxes 12 in parallel, the drive may be driven by one prime mover 2. Alternatively, one main gear box 12 may be driven by the prime mover 2, and another main gear box 12 may be driven from the main gear box 12 by using an appropriate transmission means using a flexible shaft or the like.

A so-called self-propelled type in which the wheels 5 are driven by a prime mover 2 for driving the cutting blade 4 or by a separately provided prime mover using appropriate transmission means may be used.

Further, as another mode of use of the rail-type double-sided hem cutter 1, the protrusion length of the front guide wheel 5F, the spread angle of the cutting blade 4 and the like are adjusted to provide a non-rail-type hem cutter. It can also be used by traveling directly on the ground surface GL.

[0034]

According to the first aspect of the present invention, when the vehicle travels, the body is moved relative to the rail R by the front guide wheel 5F and the rear guide wheel 5R.
Because it is supported at two points, it does not tilt back and forth under the influence of the pitching moment applied to the fuselage, and the posture of the cutting blade 4 can be kept constant without special consideration,
The mowing marks can be arranged. Further, since the grounding wheel 5S is substantially in contact with the ground while the front guide wheel 5F or the rear guide wheel 5R is in mesh with the rail R, the grounding wheel 5S does not tilt left and right under the influence of the rolling moment applied to the machine body, and the cutting blade 4 becomes a brown ridge. The posture facing L can be kept constant, and the mowing marks can be arranged. Further , since the grounding wheel 5S is not provided with a supporting rod dedicated to the grounding wheel and the front guide wheel 5F is supported by one or both of the rear guiding wheels 5R, the configuration of the entire apparatus can be simplified. it can.

According to the second aspect of the present invention, the cutting blade 4
Since the drive end side is inclined forward, the upward movement of the branches and leaves is suppressed, and the branches and leaves reach the blade without escaping, leaving no uncut, and the cutting marks can be arranged.

According to the third aspect of the present invention, the position of the cutting blade 4 in the height direction facing the branch and the leaf and the forward inclination angle of the cutting blade 4 can be set freely, and the height of the tea plant and the branch and the leaf can be adjusted. It can be applied to all tea gardens with different growth conditions.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a rail-type double-sided hem cutter of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a rear view showing the same wheel in an enlarged manner.

FIG. 4 is an enlarged perspective view showing a protrusion length adjusting mechanism of a front guide wheel arm and a rear guide wheel arm.

FIG. 5 is an enlarged front view showing the insides of the relay gear box and the main gear box.

FIG. 6 is an exploded perspective view showing the inside of a main gear box in an enlarged manner.

FIG. 7 is an explanatory diagram showing step by step how the rail type double-sided hem cutter enters and exits the rail.

FIG. 8 is four side views showing a configuration in which the location of the grounding wheel is different and a mode in which the grounding wheel is not provided.

FIG. 9 is an exploded front view showing another embodiment of the driving mechanism of the cutting blade.

FIG. 10 is a front view and a side view showing a use state of a conventional rail-type double-sided hem cutter, and a side view showing an unfavorable posture and a preferable posture of the cutting blade.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rail type double-sided hem cutter 2 motor 3 drive unit 4 cutting blade 5 wheel 5F front guide wheel 5R rear guide wheel 5S grounding wheel 6 operation handle 7 cutting blade rod 8 wheel rod 9 front guide wheel rod 10 crankcase 11 relay gear box DESCRIPTION OF SYMBOLS 12 Main gear box 13 Motor bracket 14 Sliding plate 15 Slit 16 Clamp bolt 17 Handle bracket 18 Serration 19 Handlebar 20 Guard bar 21 Clamp release 22 Throttle lever 23 Cutting blade support 24 Adjustment hole 25 Slit 26 Mounting plate 27 Clamp nut 28 Expansion Adjusting part 29 Adjusting hole 30 Clamp nut 31 Adjusting hole 32 Mounting plate 33 Slit 34 Clamp nut 35 Rear guide wheel arm 36 Bolt 37 Clamp nut 37A Clamp bolt 38 Front guide wheel arm 39 Bolt 40 Npunatto 40A clamp bolt 50 crankshaft 51 centrifugal clutch 52 drive shaft 53 pinion 54 eccentric driven gear 55 Eccentric shaft 56 eccentric plate 57 connecting rod 58 relay plate 59 eccentric cover portion 60 cutting blade guide portion L Brown ridge GL surface R rail

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01D 46/04

Claims (3)

(57) [Claims] 1. A pair of right and left clipper-type cutting blades driven by a prime mover having an upper portion as a drive end and a lower portion as a free end, each of which is configured so that the free end side can be opened centering on the drive end side. In the tea tree management device, a front guide wheel and a rear guide wheel that roll on rails laid between tea ridges are provided below the left and right cutting blades. common with orbits provided ground wheels so as to sandwich the left and right, and a state of almost grounded while the ground wheel the front guide wheels or the rear guide wheels are engaged with the rail, further wherein
The grounding wheel is either the front guide wheel or the rear guide wheel or
A rail-type double-sided hemming machine characterized by sharing a shaft with both sides . 2. The rail type double-sided hem cutter according to claim 1, wherein the cutting blade maintains a state in which a driving end side is inclined forward. 3. The rail-type double-sided hemming machine according to claim 1, wherein one or both of the front guide wheel and the rear guide wheel are provided so as to be adjustable in height.