JP3401595B2 - Support structure for cutting blades in tea cutters - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure which is preferably applied to, for example, a tea mower, and in particular, removal of the cutting blade from the tea mower and attachment of the cutting blade to the tea mower. The present invention relates to a cutting blade support structure for a new tea mower or the like that can be easily and quickly performed.

[0002]

BACKGROUND OF THE INVENTION A tea mower used in a tea field has a drive source mounted on an appropriate frame, and the blade is reciprocally driven by the drive source and the teeth formed on the blade are used for cutting. And a guide plate for guiding the tea leaves to the rear leaf bag, for example. And as a matter of course, since the sharpness of the teeth decreases as they are used, sharpening of the blades is intended to recover the sharpness, and after a few more sharpenings, a new cutting blade will be used. Replacement is required.

When removing the cutting blade from the tea cutting machine during such blade sharpening or replacement, the structure of the conventional tea cutting machine is such that the cutting blade body 10 'supports the cutting blade as shown in FIG. Since it is attached to the guide plate 11 'using the guide pin 13', the guide pin 13 'is released and the reciprocating drive unit 12' is disassembled to connect the drive mechanism and the cutting blade body 10 '. It is necessary to release the parts.

However, since the teeth 102 'formed on the cutting blade body 10' are sharp blades, the operator is required to be careful, and two or more operators perform the above-mentioned work while keeping the left and right balance. I have to do it. This type of work is very cumbersome and takes a long time as a work performed by a tea farmer who is a user in a tea field. In particular, when mounting the sharpened blade 10 ′ on the tea cutting machine C ′, it is necessary to adjust the gap between the pair of upper and lower cutting blades 10 ′, and this gap adjustment work can be performed accurately. Are limited to skilled workers.

For this reason, at present, the manufacturer's service staff who has been requested by the tea farmer goes under the user to perform the above-mentioned troublesome attachment / detachment work. I try to continue the work. On the other hand, a work form is adopted in which the removed cutting blade body is brought back to the work place to grind teeth, and then the work is carried out again under the user to be attached again. Of course, in the case of portable and small-sized inexpensive tea mowers, there is room for tea farmers to use a spare machine to avoid a substantial decrease in operating rate, but the self-propelled type that has become the mainstream these days. It is not practical to provide a spare machine for the maintenance of the cutting blade only because a tea mower such as a rail-run type tea mower is expensive.

On the other hand, the cutting blade of the tea cutting machine has the following unique problems from the technical side of the manufacturing side. That is, the specifications of the tea mower have many common points in that this is a device that acts teeth on tea plants, but a plucking machine, a mower, a shallow mower, a light pruner, and a middle mower Machines, mowers, and other devices that have different mowing forms differ from each other, and require dedicated parts according to their specifications.

Therefore, the manufacturer prepares a prime mover, a main body part including the prime mover, a cutting blade body, a reciprocating drive part, and the like having several specifications, and selects an optimum combination. By selecting, plucking machine, mower,
It comprises a shallow mower, a light pruning machine, a middle mower, a mower, and the like. However, the combination pattern of the cutting blade body and the reciprocating drive part is almost fixed according to the load of each cutting mode, and is rationalized in the manufacturing aspect of the above-mentioned different type of tea cutting machine. If we try to achieve the above, there is room for further improvement.

[0008] Therefore, the present inventor has further clarified the above-mentioned problems concerning maintenance of the cutting blade by the user and problems in manufacturing by the manufacturer, which are seemingly unrelated to each other. Based on the idea that the objectives could be achieved at the same time, we attempted to develop a new mechanism based on this idea. In other words, if the cutting blade and the reciprocating drive unit are integrated and can be replaced, the main body and the peripheral members of the cutting blade can be modularized. The present invention has made it possible to rationally manufacture the product, and has further come to the concrete idea that the cutting blade body can be easily replaced by the user for maintenance.

[0009]

The present invention has been made based on such a background and idea, and it is easy to remove the cutting blade from the tea cutting machine and attach the cutting blade to the tea cutting machine. It is a technical task to develop a support structure for a cutting blade body in a new tea mower or the like, which can be performed quickly and quickly, and the main body part is shared between the tea mowers of different specifications. It was done.

[0010]

[Means for Solving the Problems] That is, a support structure for a cutting blade in a tea cutting machine according to claim 1 comprises a cutting blade unit comprising a cutting blade reciprocated by an appropriate drive source, In a tea mower or the like comprising a main body portion that supports a cutting blade unit, the cutting blade unit includes a cutting blade support guide plate that supports the cutting blade body, and power transmitted from a drive source to the cutting blade body. are those in which the reciprocating unit for converting the reciprocating motion is configured as a set solid, whereas, the drive source is intended to be supported against the main body portion, the cutting blade unit with respect to the main body portion The coupling element formed on the tip portion of the output shaft of the drive source and the coupling element formed on the tip portion of the input shaft of the reciprocating drive unit are coupled to each other in a state of being mounted by , the cutting blade unit in the main body portion Those made as characterized by being configured to mount detachably to. According to the present invention, since the cutting blade body, which has been a troublesome work in the past, can be attached and detached by exchanging the unit, it can be easily and quickly performed by a person who is not a manufacturer who is familiar with handling equipment. Further, the main body part and the peripheral members of the cutting blade can be modularized, and it is possible to more rationally manufacture products having different specifications. Furthermore, the drive source
The formation of the transmission path of the power supplied from the cutting blade to the cutting blade
In the series of operations to attach the unit to the main body,
Since it can be done barely, it is necessary for attaching and detaching the cutting blade
The time can be significantly shortened.

In addition to the above requirements, the support structure for the cutting blade in the tea mower according to claim 2 guides the cutting blade support guide plate in the cutting blade unit and the tea branches and leaves cut by the cutting blade. For this reason, it is characterized in that it can be separated from the guide plate provided on the main body. According to the present invention, the cutting blade can be easily and quickly attached and detached.

The support structure for the cutting blade in the tea cutting machine according to claim 3 is the same as the requirement for claim 1, wherein the cutting blade unit guides the tea leaves cut by the cutting blade. The present invention is characterized in that it includes a guide plate, and the guide plate and the frame member of the main body can be separated. According to the present invention, the cutting blade can be easily and quickly attached and detached.

Furthermore, in addition to the above requirements, the support structure for the cutting blade in the tea mower according to claim 4 further comprises:
The cutting blade unit is provided with a pair of locking mechanisms that can be positioned by engaging with each other. According to the present invention, the work of attaching and detaching the cutting blade can be accurately performed without requiring a particularly delicate work.

In addition to the above requirements, the support structure for the cutting blade in the tea mower according to the fifth aspect is such that the cutting blade unit attached to the main body has a cutting blade type according to the working type. The cutting blade unit is appropriately selected from among different types of cutting blade units. According to the present invention, since a single main body can be used for picking, shallow cutting, middle cutting, etc., a manufacturer can rationally manufacture a tea cutting machine of different specifications. ,
For the user, the initial cost and running cost can be significantly reduced compared to the case where each individual tea mower is purchased as a dedicated machine. The problems can be solved by using the configurations of the invention described in each of these claims.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A support structure for a cutting blade in a tea mower or the like according to the present invention will be specifically described below with reference to the drawings. In the present specification, a pruning machine for the purpose of harvesting tea leaves and a mowing machine used in accordance with each step for mowing and aligning tea ridges for tea garden management, a shallow mowing machine, and a light pruning machine,
The mid-brusher, trimmer, hem-cutter, etc. shall be collectively referred to as a tea-cutter. Further, the tea mower may be basically a portable type, but in accordance with the recent tendency of labor saving, etc., by combining an appropriate traveling mechanism with this, self-propelled type, rail traveling type, riding type etc. It is also possible to adopt various forms of progress. It should be noted that the basic configuration of the tea mower may be a configuration that is already known in the conventional device, or a configuration that will be developed in the future can be partially applied.

In the present embodiment, a riding-type plucking machine C will be used as a tea cutting machine. The riding type plucking machine C is shown in FIG.
As shown in, the tea mower unit U is configured to be detachably attached to the traveling carriage B.
The tea mower unit U is configured such that the cutting blade unit 1 that directly acts on the tea leaves A is detachably attached to the main body 2.

Here, referring to the definitions of the cutting blade unit 1 and the main body portion 2, first, the cutting blade unit 1 directly acts on the tea leaves A,
As defined in claim 1, the power transmitted from the cutting blade body 10, the cutting blade support guide plate 11 that supports the cutting blade body 10, and the drive source 5 is converted into the reciprocating motion of the cutting blade body 10. The reciprocating drive unit 12 for the above is configured as one assembly. Further, the main body 2 serves as a strength member that supports the cutting blade unit 1, and is configured by a member excluding the members included in the cutting blade unit 1 from the tea cutting machine unit U. In the present embodiment, it is composed of members such as the air supply pipe 3 and the drive source 5, and a frame member that supports these members.

The body 2 will be described in detail below.
The frame member of the main body 2 is, for example, an upper frame 2 to which a lightweight member such as an aluminum pipe parallel to the front and rear is appropriately applied.
The side plate 21 and the side plate 22 are provided at both end portions of 0, respectively, and the guide plates 23 are provided at the lower portions of the side plates 21 and 22 so as to have a somewhat rectangular curved opening in a front view. It is something.

On the outside of the side plate 22, there is provided a pin 22a which engages with a slit 16a in the cutting blade unit 1 which will be described later, as shown in FIG. The guide plate 23 is located behind the cutting blade 10, which will be described later. For example, a metal plate made of aluminum or the like is curved toward the arch side, and female screw holes 23a are formed at a plurality of locations along the longitudinal direction. To do.

Next, various members held by such a frame member will be described. The air duct 3 is provided diagonally above and in front of the guide plate 23 in a recumbent state over substantially the entire width of the upper frame 20. A large number of the air ducts 3 are branched so as to be oriented on the guide plate 23. Air supplied from a fan unit 30 driven by a drive source 5 described later is ejected from the formed branch nozzle 3a.

The drive source 5 is mounted so as to be held between the upper frames 20, and a two-cycle engine or the like is applied as an example in the present embodiment, but of course. Any other electric motor, oil motor, or the like may be used as long as it can drive the cutting blade body 10 described later. The output shaft 50 projects from the lower surface of the drive source 5 and penetrates the fan unit 30, and a recess 50A as a coupling element is formed at the lower end of the output shaft 50. The shape of the concave portion 50A is the convex portion 15 described later.
A portion corresponding to the shape of A and divided by two straight lines having the same dimension on both sides from the center line in a circular cross section extends upward from a lower end surface of the output shaft 50 over a certain range. Cut out the shape.

The side plates 21 and 22 located on the left and right of the upper frame 20 are provided with an assembly 6 to which a metal pipe, which is an example of assembly means for the traveling carriage B, is applied.

Next, the cutting blade unit 1 which constitutes the tea mower unit U together with the main body 2 will be described in detail.
This is intended to modularize peripheral members of the cutting blade body 10, and includes a pair of upper and lower cutting blade bodies 10, and a cutting blade support guide plate 11 slidably supporting these cutting blade bodies 10,
The reciprocating drive unit 12 for converting the power transmitted from the drive source 5 into the reciprocating motion of the cutting blade body 10 is configured as one assembly. Then, the pair of upper and lower cutting blades 10
By alternately reciprocating, the tea leaves A are plucked by the hair clipper action of the teeth 102 formed on each cutting blade 10.

The members constituting the cutting blade unit 1 will be described below. First, as shown in the perspective view of FIG. 4, the cutting blade body 10 is formed by processing a stainless material into an L-shape in a plan view as an example.
1, the teeth 102 at appropriate intervals along the longitudinal direction.
And the rectangular eccentric plate receiving portion 103 with rounded corners is formed on the short side portion.

The cutting blade support guide plate 11 is a metal member having a relatively large thickness and sufficient rigidity, and has a curved shape that substantially follows the tea ridge, and the width dimension of the main body 2 is large. It has almost the same width dimension as. Then, a pair of upper and lower cutting blade bodies 10 are slidably attached to the cutting blade support guide plate 11 using guide pins 13. Further, the cutting blade support guide plate 11 has holes 11a formed at a plurality of locations along the longitudinal direction thereof.

The reciprocating drive unit 12 is assembled to one end of the cutting blade support guide plate 11, and the reciprocating drive unit 12 uses a so-called eccentric shaft mechanism. The mechanism for converting the rotational movement of the output shaft 50 into the linear reciprocating movement of the cutting blade 10 is provided.

The specific structure of the reciprocating drive unit 12 is shown in FIG.
As shown in FIG. 1, first, the eccentric plates 14 that are vertically stacked are provided on one end of the input shaft 15 so that the eccentric motion is substantially performed. The two eccentric plates 14 are configured so that their phases are different from each other by 180 °, and needle bearings 14a each having a cage are externally fitted to each eccentric plate 14. Then, the eccentric plates 14 fitted with the needle bearings 14a are positioned inside the eccentric plate receiving portions 103 of the pair of upper and lower cutting blades 10, respectively.
Further, the input shaft 15 is inserted into a bearing 14b fixed to the casing 12A so that the periphery of the eccentric plate receiving portion 103 of the cutting blade body 10 is surrounded by the casing 12.
It is housed in A.

At this time, in the present embodiment, the upper end portion of the input shaft 15 is in a state of protruding from the upper surface of the casing 12A, and the convex portion 15A serving as a coupling element is formed on the upper end portion of the input shaft 15. Further, the shape of the convex portion 15A corresponds to the shape of the concave portion 50A, and the outside of a portion divided by two straight lines having the same size on both sides from the center line in the circular cross section is input. Axis 1
The shape is cut off from the upper end surface of 5 over a certain range.

Further, as shown in FIG. 2, a side plate 16 having a V-shape in plan view is erected on the side surface of the casing 12A on the cutting blade support guide plate 11 side. Pins 22 provided on the side plate 22 of the part 2
A slit 16a that engages with a is formed.

The cutting blade unit 1 has the above-described structure as an example, and when the eccentric plate 14 makes an eccentric movement due to the rotation of the input shaft 15, a pair of upper and lower cutting blade bodies 10 reciprocate in mutually opposite directions. The tooth 102 moves like a hair clipper. In addition to the above-described reciprocating drive unit 12, the cutting blade body 10 is driven by a type that drives only one of the cutting blade bodies 10 or a combination of a bevel gear and a universal joint is used for power transmission. It is possible to adopt various configurations such as a thing.

The cutting blade unit 1 and the main body 2 have the above-mentioned structure as an example, and the tea cutting machine unit U is constructed by assembling them. Specifically, as shown in FIG. 3, the cutting blade support guide plate 11 is placed on the guide plate 23, and the slits 16a formed on the side plate 16 are engaged with the pins 22a provided on the side plate 22. At this time, the convex portion 15A and the concave portion 50A, which are coupling elements, are coupled to each other. The details of the work procedure at this time will be described later.

By mounting the tea mower unit U thus constructed on the traveling carriage B, a riding type plucking machine C, which is an example of the tea mower, is constructed.
Here, the traveling carriage B will be briefly described. The traveling carriage B has a proper frame F as shown in FIG.
It is provided with an endless track 40 which is a traveling body, a leaf collecting container 41 and a duct 45. Further, the inside of the frame F is provided with two rods R serving as a connecting element with the tea mower unit U.

The traveling carriage B is attached to the two assembling bodies 6 provided in the main body 2 of the tea mower unit U.
The rod-type plucking machine C is configured by inserting the rod R included in the above and then appropriately fixing it.

The riding-type plucking machine C, which is an example of a tea mower, has the above-described configuration as an example, and is shipped with an appropriate protective cover attached to the cutting blade 10. In a tea plantation, the cutting blade unit 1 and the main body portion 2 are attached / detached, that is, the cutting blade body 10 is substantially attached / detached to / from the riding-type plucking machine C by the following procedure, quickly and safely. .

(1) Removal of the cutting blade unit When it is necessary to maintain or polish the cutting blade body 10 of the tea cutting machine unit U in the riding type plucking machine C in use, the operator needs to drive the drive source 5 In the state in which the cutting blade unit 1 is stopped, the cutting blade unit 1 is detached in the following procedure after the protective cover is attached to the cutting blade body 10.

[Setting of Coupling Element] First, the operator first inputs the input shaft 15 and the output shaft 5 having the convex portion 15A and the concave portion 50A which are coupling elements in the coupled state.
0 is rotated so that both longitudinal directions are parallel to the side plates 16 and 22 as shown in FIG. If the reciprocating drive unit 12 or the drive source 5 is appropriately marked for positioning, such an operation can be easily performed.

[Release of Locking Mechanism and Coupling Element] After the screw 17 is removed, the cutting element 1 is held and pulled out as shown in FIG. Barrel convex portion 15A and concave portion 50
The connection of A is released, and the engagement of the slit 16a, which is a locking mechanism, with the pin 22a is released. At this time, since the operator handles the cutting blade unit 1 configured as one assembly, the cutting blade from the riding-type plucking machine C can be substantially used without performing a delicate operation such as maintaining left-right balance. Body 1
The removal work of 0 can be easily and safely performed by one person.

(2) Attaching a new cutting blade unit Next, a separately prepared maintenance and polished cutting blade body 10
The cutting blade unit 1 having the above is attached to the main body 2 in the following procedure.

[Setting of Coupling Element] As shown in FIG. 3A, the operator first rotates the input shaft 15 and the output shaft 50 having the convex portion 15A and the concave portion 50A as the coupling element to rotate these. The longitudinal direction is parallel to the side plates 16 and 22, respectively.

[Coupling of Locking Mechanism and Coupling Element] Next, the cutting blade unit 1 is held and the cutting blade support guide plate 1 is held.
1 is placed on the guide plate 23, and in this case, as shown in FIG.
As shown in (b), the cutting blade unit 1 is pushed toward the main body 2 side while the slits 16a formed on the side plate 16 are engaged with the pins 22a provided on the side plate 22, and the end of the slit 16a is pushed. The pin 22a is positioned on the portion. By such a series of operations, the convex portion 15A and the concave portion 50A, which are the coupling elements, are coupled to each other, and the centers of the input shaft 15 and the output shaft 50 overlap. At this time, if the cutting blade unit 1 is suspended from the main body 2 by using a suspension spring or the like, such an operation can be easily performed.

Subsequently, the screw 17 is screwed into the hole 11a formed in the cutting blade support guide plate 11 and the female screw hole 23a formed in the guide plate 23 to fix them. By assembling the cutting blade unit 1 including the cutting blade body 10 to the main body portion 2 fixed to the riding type plucking machine C in this manner, the cutting blade body 10 is substantially attached to the riding type plucking machine C. The work can be easily performed, and in the tea garden, a decrease in the operating rate of the riding-type plucking machine C is suppressed to a minimum, and the tea leaves A can be plucked efficiently.

(3) Regeneration of the cutting blade unit and mounting on the main body section On the other hand, with regard to the cutting blade unit 1 having the blunt cutting blade body 10 that has already been removed, bring this to the work place as appropriate. Releasing the guide pin 13, reciprocating drive unit 1
2 is disassembled and the cutting blade body 10 is attached to the cutting blade support guide plate 1
The tooth 102 is sharpened. Then, the cutting blade body 10 which has been sharpened is again cut by the cutting blade support guide plate 1.
The cutting blade unit 1 which can be used is constructed by assembling the reciprocating drive unit 12 together with the cutting blade unit 1, and stands by for the next use. Then, when the cutting blade body 10 becomes dull, the regenerated cutting blade unit 1 is attached to the main body portion 2 fixed to the riding type plucking machine C in the same manner as described above.

[0043]

Other Embodiments The present invention is based on the above-described embodiments, but the following embodiments can be adopted based on the technical idea of the present invention.

[Embodiment with Different Form of Main Body] First, in the above-described basic embodiment, the traveling carriage B is
On the other hand, the tea mower unit U including the cutting blade unit 1 and the main body 2 is detachably attached.
The form of the main body 2 can be different as follows. That is, the form of the main body 2 in the above-described basic embodiment is such that members such as the air duct 3 and the drive source 5 are held by the frame member of the main body 2. However, in the present embodiment, the main body portion 2 is configured as a part of the duct 45 included in the traveling carriage B, and the blower pipe 3 and the drive unit are driven. Members such as the source 5 are held on the traveling carriage B side. Specifically, as shown in FIG. 7, the introduction portion of the duct 45 of the traveling carriage B is a strength member that can be grasped as a monocoque frame, and the members such as the blower pipe 3 and the drive source 5 are supported on this portion. It is a thing. By attaching the cutting blade support guide plate 11 of the cutting blade unit 1 to the duct 45, the tea cutting machine unit U
Is configured. In other words, in this embodiment,
The main body 2 is configured integrally with the traveling carriage B, and the tea mower unit U is configured when the cutting blade unit 1 is attached to the traveling carriage B.

[Embodiment of Selecting Plural Kinds of Cutting Blade Units According to Working Mode] The above-described basic embodiment is an application of the present invention to a plucking machine which is an example of a tea cutting machine. However, it can also be applied to other tea mowers such as lawnmowers, shallow mowers, light-pruners, medium-cutters and mowers used for managing tea plants, or trimmers used for purposes other than tea garden management. Is.

When the present invention is applied to such various types of tea mowers, the cutting blade unit 1 attached to the main body 2 may have a different cutting blade shape depending on the working style. By preparing multiple types, a single main body 2 is adopted,
Since it can be used for shallow-cutting and medium-cutting, the initial cost and running cost can be significantly reduced as compared with the case where each individual tea cutting machine is purchased as a dedicated machine.

In the above-described basic embodiment, the tea mower is described by taking the riding type plucking machine C constituted by combining the plucking machine unit U with the traveling carriage B as an example. As for the form, a portable type in which a handle is attached to the plucking machine unit U, a self-propelled cart attached to the plucking machine unit U, or a bogie that moves on the management rail is attached to the plucking machine unit U. It can also take the form of a rail running type.

[Embodiment in which the cutting blade unit is provided with a drive source] Further, in the above-described basic embodiment, the drive source 5 is provided in the main body portion 2. This is to reduce the weight of the cutting blade unit 1 in which the peripheral members of the cutting blade body 10 separated from the main body 2 are modularized. Therefore, when a light source such as an oil motor or an electric motor is used as the drive source 5, the drive source 5 should be provided above the reciprocating drive unit 12 in the cutting blade unit 1 as shown in FIG. You can also do it.

When an oil motor is used as the drive source 5, the cutting blade unit 1 and the main body 2 can be separated from each other by detachably attaching one-touch coupling midway in the piping of the hydraulic path. By mounting a hydraulic pump for driving on the traveling carriage B or the like to which 2 is fixed, the weight of the tea mower unit U can be reduced. Further, when an electric motor is used as the drive source 5, the cutting blade unit 1 and the main body 2 can be separated from each other by appropriately attaching / detaching the middle of the power supply wiring with a jack, a plug or the like. Further, the weight of the tea mower unit U can be reduced by mounting a drive generator on the traveling carriage B or the like to which the main body 2 is fixed.

[Other Embodiments of Locking Mechanism] Further, regarding the locking mechanism, in the above-described basic embodiment, this is a linear slit 16 formed on the side plate 16.
Although it is configured by a and the pin 22a provided on the side plate 22, the important point is that the cutting blade unit 1 and the main body portion 2 can be easily positioned, and at this time, coupling elements can be coupled to each other. Since any structure may be adopted, the following embodiments can be adopted.

In the locking mechanism shown in FIG. 7, the slit 16a is L-shaped so that the slit 16a and the pin 22a are engaged with each other in a bayonet manner. With such a structure, when the cutting blade unit 1 is assembled to the main body 2, the guide plate 23 and the cutting blade support guide plate are positioned when the pin 22a is located at the end of the horizontal portion of the slit 16a. 11 is positioned in the front-rear direction, and when the pin 22a is located at the lower end of the vertical portion of the slit 16a, the guide plate 23 and the cutting blade support guide plate 11 are positioned in the vertical direction. .

When the locking mechanism has such a structure, the cutting blade support guide plate 11 should have a stepped horizontal portion as shown in FIGS. 7 (b) and 7 (c). When the guide plate 23 is placed on the horizontal portion at the low position, the upper surface of the horizontal portion at the high position is located above the upper surface of the guide plate 23. Does not interfere with the transfer of.

[Other Embodiments of Coupling Element] Further, regarding the coupling element, in the above-described basic embodiment, the convex portion 15A and the concave portion 50A are coupled by approaching each other in the horizontal direction. However, the structure is such that the input shaft 15 and the output shaft 50 can be easily and surely coupled to each other. Therefore, the following embodiment can be adopted.

First, the coupling element shown in FIG. 8 (a) has a configuration in which the convex portions 15A and the concave portions 50A have a rectangular shape so that they can be coupled only when they approach each other in the vertical direction. .

The coupling element shown in FIG. 8 (b) has a concave portion 50A formed on the input shaft 15 and a convex portion 15A formed on the output shaft 50. Further, in this embodiment, the input shaft 15 is formed. The upper end of the casing does not protrude from the upper surface of the casing 12A.

In the case of adopting the structure of the coupling element like the above-mentioned two forms, the convex portion 15A is formed by using the bayonet type locking mechanism (slit 16a and pin 22a shown in FIG. 7). Also, the recesses 50A can be coupled to each other in the vertical direction. By adopting such a structure of the coupling element, the input shaft 15 and the output shaft 50 cannot be coupled to each other when they are deviated in the front-rear direction, so that the centers of the two are surely aligned with each other. Can be combined.

The coupling element shown in FIG. 8 (c) uses the input shaft 15 and the output shaft 50 themselves as coupling elements, and the shapes of the input shaft 15 and the output shaft 50 are square as an example. It is a thing. Then, the sleeve S is fitted onto the output shaft 50 and the input shaft 15 so as to couple the both.

Furthermore, in addition to the above-mentioned coupling elements, although not shown, a flexible shaft may be used to connect the output shaft 50 and the input shaft 15. Assembling of the blade unit 1 and the main body 2 is performed by using the guide plate 23 and the cutting blade support guide plate 1
Since only the positional relationship with 1 needs to be accurately matched, the assembling work can be further simplified.

[Embodiment with Different Form of Cutting Blade Unit] Further, in the above-described basic embodiment, the frame member of the main body 2 is as shown in FIGS. 1, 2, 3, 5, and 6. In addition, the guide plate 23 located below and facing the upper frame 20 was used as a part of the strength member, and as an example of the strength member of this part, as shown in FIG. Using the lower frame 24 to which the
Rather, 3 may be a part of the cutting blade unit 1.

That is, the cutting blade unit 1 is configured to include the guide plate 23 by integrally fixing the cutting blade support guide plate 11 and the guide plate 23, and the guide plate 23 is detachably attached to the main body 2. Shall be attached to. Guide plate 2 of course
When another member is provided between the duct 3 and the duct 45, even that member may be a constituent member of the cutting blade unit 1.

The cutting blade unit 1 in this embodiment is mounted on the main body 2 as shown in FIG. 9 (a).
By providing the lower surface plate 25 so as to face the lower part of the lower frame 3, the guide plate 23 and the lower surface plate 25 are used to form the lower frame 24.
And the guide plate 23 is fixed to the lower frame 24 by using screws 17 or the like. The lower surface plate 25 also functions as a part of the strength member of the cutting blade unit 1.

Further, as shown in FIG. 9B, the lower surface plate 25 is bent to form a positioning portion 25a which is a surface vertical to the guide plate 23, and the positioning portion 25a and the lower surface of the guide plate 23 are formed. It is also possible to adopt a structure in which the lower frame 24 can be reliably positioned by means of. Further, as shown in FIG. 9C, the positioning portion 25 as described above is used.
By providing a positioning assisting plate 25b facing a,
The lower frame 24 may be fitted between the positioning portion 25a and the positioning assisting plate 25b so that the lower frame 24 can be positioned more reliably.

Further, as shown in FIG. 10, the lower frame 24 may be detachable from the side plates 21 and 22, and mounting brackets 24a are formed at both ends of the lower frame 24. Mounting bracket 24a using buckles 26, bolts 27, etc.
The side plate 21 and the side plate 22 are connected to each other. In this case, the lower frame 24 serves as a constituent member of the cutting blade unit 1, and is fixed to the guide plate 23 by the means shown in FIG. The mounting bracket 24a is raised as high as possible, while the side plate 21 and the side plate 22 to which the mounting bracket 24a is assembled are made as short members as possible, as if the mounting bracket 24a was mounted.
It does not matter if the structure forms the side plate of the main body 2.

[0064]

According to the present invention, the cutting blade 1 from the tea cutting machine is used.
0 removal and attachment of the cutting blade 10 to the tea mower,
The cutting blade body 10, the cutting blade support guide plate 11 that supports the cutting blade body 10, and the power transmitted from the drive source 5 are supplied to the cutting blade body 10.
The cutting blade unit 1 is integrally provided with the reciprocating drive unit 12 for converting into the reciprocating motion of the cutting blade unit 1, and the cutting blade unit 1 is detachably attached to the main body 2 of the tea cutting machine. This can be done easily and quickly. In addition, the main body 2 and the peripheral members of the cutting blade 10 can be modularized, and a tea mower having different specifications can be manufactured more rationally.

[Brief description of drawings]

FIG. 1 is a perspective view showing a riding plucking machine to which a supporting structure for a cutting blade of a tea mower according to the present invention is applied and a perspective view showing an enlarged tea mower unit.

FIG. 2 is an enlarged perspective view showing a part of a cutting blade unit and a main body portion, a coupling element and a locking mechanism.

FIG. 3 is a side view showing a cutting blade unit, a main body, and a tea cutting machine unit configured by these.

FIG. 4 is an exploded perspective view showing a reciprocating drive unit.

FIG. 5 is a perspective view showing an embodiment in which the form of the main body is different.

FIG. 6 is a side view showing an embodiment in which a drive source is provided for the cutting blade unit.

FIG. 7 is a side view showing another embodiment of the locking mechanism.

FIG. 8 is a perspective view and a side view showing another embodiment of the coupling element.

FIG. 9 is a side view showing three types of embodiments in which a guide plate is a constituent member of a cutting blade unit and how the cutting blade unit and the main body are attached and detached.

FIG. 10 is a front view showing an embodiment in which the lower frame is used as a constituent member of the cutting blade unit.

11A and 11B are a vertical sectional side view and a plan view showing a supporting structure of a cutting blade body in a conventional tea mower.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cutting blade unit 2 Main body section 3 Air blow pipe 3a Branch nozzle 5 Drive source 6 Assembly body 10 Cutting blade body 11 Cutting blade support guide plate 11a Hole 12 Reciprocating drive section 12A Casing 13 Guide pin 14 Excene plate 14a Needle bearing 14b Bearing 15 Input shaft 15A Convex part 16 Side plate 16a Slit 17 Screw 20 Upper frame 21 Side plate 22 Side plate 22a Pin 23 Guide plate 23a Female screw hole 24 Lower frame 24a Mounting bracket 25 Lower plate 25a Positioning part 25b Positioning auxiliary plate 26 Buckle 27 Bolt 30 Fan unit 40 Endless Track 41 Leaf-storing Container 45 Duct 50 Output Shaft 50A Recess 101 Sliding Part 102 Teeth 103 Excene Plate Receiving Part A Tea Leaf B Traveling Cart C Riding-type Plucking Machine ( Browner ) F Frame R Rod S Sleeve U Tea Mower unit

Claims (5)

(57) [Claims] 1. A tea cutting machine or the like comprising a cutting blade unit including a cutting blade body which is reciprocally moved by an appropriate drive source, and a main body portion supporting the cutting blade unit. includes a blade guide guide plate for supporting the cutting blade body, and a reciprocating unit for converting a power transmitted to the reciprocation of the cutting blade body from the drive source is configured as a pair stereoscopic
On the other hand, the drive source is supported on the main body, and is formed at the tip of the output shaft of the drive source with the cutting blade unit attached to the main body. So that the coupling element and the coupling element formed at the tip portion of the input shaft of the reciprocating drive unit are coupled to each other.
According to the construction, the cutting blade unit is detachably attached to the main body, and the cutting blade body is supported in a tea cutting machine or the like. 2. The cutting blade support guide plate of the cutting blade unit and a guide plate provided on the main body for guiding the tea leaves cut by the cutting blade body are separable from each other. A support structure for a cutting blade in a tea mower according to claim 1. 3. The cutting blade unit includes a guide plate for guiding the tea leaves cut by the cutting blade body, and the guide plate and the frame member of the main body can be separated from each other. A support structure for a cutting blade in a tea mower according to claim 1. 4. The body and the cutting blade unit are provided with a pair of locking mechanisms that can be positioned by engaging with each other.
A support structure for a cutting blade in the tea mower according to 1, 2, or 3 . 5. The cutting blade unit attached to the main body is appropriately selected from a plurality of types of cutting blade units having different cutting blade types according to a work type. A cutting blade support structure for a tea mower according to claim 1, 2, 3 or 4 .