JP3522718B2 - Mounting structure for tines for turf drilling - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turf surface tine mounting structure used in a grass surface piercing machine.

[0002]

2. Description of the Related Art First, a schematic structure of a lawn surface punching machine using a tine for punching a lawn surface according to the present invention will be described. FIG. 6 is an overall side view showing a state in which the turf surface piercing machine A is towed by a tractor B to perform piercing work, and FIG. 7 is a multiple piercing machine unit A ₁ that constitutes the turf surface piercing machine A _1. FIG. 8 is a plan view of the one disposed at the left end of FIG.
It is a side view for explaining the locus of (T '). The lawn surface drilling machine A is pulled by a tractor B to perform work, and a multiple drilling machine unit A ₁ is mounted on a main frame 31 thereof along the lateral direction.

The punching machine single unit A ₁ has a pair of rotating disks 33a and 33b arranged inside the single frame 32 at predetermined intervals along the lateral direction, and further displaced by a predetermined length along the front-rear direction. Support shafts 34a, 34b on the single frame 32
Crankpins 35a, 35b provided at the same phase position on the outer peripheral portions of the rotary disks 33a, 33b.
In addition, a plurality of (6 in the illustrated example) tine mounting holders H ′ are always horizontally supported via a pair of brackets 36 a and 36 b, and tine T ′ is mounted on the holder H ′. Each of the tine mounting holders H'is arranged along the lateral direction and has a predetermined interval along the longitudinal direction thereof, and a plurality of two tines T'are arranged vertically along the longitudinal direction. Installed. In addition,
Each punch unit A ₁ is urged downward by a compression spring 37 arranged at the rear end thereof, so that the tine T ′ is easily pierced by the turf surface.

Therefore, when the turf surface punching machine A is pulled by the tractor B and travels, one or a plurality of tines T 'located below the piercing machine A ₁ pierce the turf surface. The tine T ′ is attached to the main frame 31
Retreat relative to. As a result, the pair of rotating discs 33a and 33b are rotated in the forward direction (direction of arrow Q in FIG. 8), and the tines T ′ piercing the grass surface come out,
A large number of vent holes are punched in the grass surface by sequentially piercing another tine T'on the grass surface. 6 to 8, R indicates the traveling direction of the lawn surface punching machine A.

And, as one of the conventional mounting structures of the tine T'integrated with the tine mounting holder H ',
Some are shown in FIG. In this mounting structure, the shank 38 at the head of the tine T ′ is provided with a stepped fixing portion 39 having a diameter slightly smaller than other parts, and a tine mounting hole 41 opened on the lower surface of the tine mounting holder H ′. The shank 38 of the tine T'is inserted into the holder and the fixing bolt 42 screwed onto the side surface of the holder H'is pressed and fixed to the outer peripheral surface of the stepped fixing portion 39 of the tine T '. Therefore, each time the tine T ′ is attached to and detached from the tine attachment holder H ′, the fixing bolt 42 must be rotated forward and reverse, which is a troublesome work.

On the other hand, when attaching / detaching the tine T ′ to / from the tine mounting holder H ′, the tine T ′ is not used for a long period of time when the tine T ′ is newly attached, when replacement is performed due to breakage or the like, or when the tine T ′ is attached There is a case where the removed tine T ′ is reattached for cleaning. Further, since each of the multiple punching machine units A ₁ is provided with a large number of tines T ′, the total number thereof is extremely large. As described above, in addition to the opportunity to attach and detach the tines T ′ to and from the tine mounting holder H ′ to some extent, the total number of the tines T ′ is large.

[0007] Further, JP-A-10-33007 and 11-18770.
No. 4, for example, discloses a tine having a split structure in which a hold pin attached to the tine attachment holder and a tine body detachably connected to the hold pin via a connecting pin are divided into two. There is. Unlike the above-mentioned single structure, this split tine has a structure in which the tine main body is attached to and detached from the holder via the connecting pin with respect to the hold pin attached to the holder. Since it does not need to be installed directly,
Attachment and detachment operations become easy. However, in the case of the split-structured tine, the tine body has no choice but to have a cylindrical structure.
There is a problem in that the structural strength is low and the reaction force at the time of perforation acts on the ring-shaped portion of the upper end surface thereof, so that it cannot withstand an excessive reaction force.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a plurality of tines of a single structure used in the above-mentioned lawn surface punching machine, and a single bullet.
The task is to make it possible to attach / detach to / from the tine mounting holder with one touch using the sex set pin .

[0009]

According to a first aspect of the present invention for solving the above-mentioned problems, a shank of the head of the tine is inserted into a tine mounting hole provided vertically in the tine mounting holder, a structure for attaching the tine to the holder via an elastic set pin, the tine mounting holder, set pin insertion hole which intersects perpendicularly to the tine mounting hole plurality are provided, the elastic The set pin is formed in a substantially U shape, and has a linear holder insertion part that is inserted into a set pin insertion hole of the holder, and a locking part that is disposed above the holder and is locked to the holder. And a set pin insertion hole for inserting the holder insertion portion of the elastic set pin in the shank of the tine, the set pin insertion hole being provided in a direction perpendicular to the axis. In a state where the shank is inserted respectively the tine in the tine mounting holes, the set pin insertion hole of the holder, by inserting the holder insertion portion of the elastic set pin, a set pin through the respective tine the holder insertion portion One elastic set by inserting each into the hole and locking the locking part to the holder.
Use the pin to attach multiple tines to the tine mounting holder.
The feature is that it can be attached .

[0010]

According to the invention of claim 1, the tine mounting holder is provided.
The dar has a plurality of ties that are installed vertically on the holder.
Set pin insertion hole
Because they are, by inserting the shank of the head of the tine to each tine mounting holes, a set pin insertion hole formed in the axis-perpendicular direction to the portion of the shank, said tine mounting hole in the tine mounting holder The elastic pin is inserted into the set pin insertion hole of the tine by aligning the set pin insertion hole provided at right angles with each other, and the holder insertion portion of the elastic set pin inserted into the set pin insertion hole is inserted. When the locking part of the pin is placed above the holder and locked to it, one tine setting pin is used by one elastic set pin.
Multiple tines can be attached to the attached holder.

[0012]

[0013]

The invention of claim 2 is based on the invention of claim 1 , wherein the engaging portion of the elastic set pin is bent and formed in a substantially V shape toward the holder inserting portion side.
It is characterized in that the bent portion of the locking portion is inserted and locked in the locking recess formed on the upper surface of the holder. This prevents the upper half of the elastic set pin from protruding from the holder and eliminates interference with peripheral members.The extremely simple structure allows the elastic set pin to be easily removed from the tine mounting holder. , Can be firmly fixed.

Further, the invention of claim 3 is based on the invention of claim 2 , and is characterized in that the locking recess is provided at an end portion on the insertion side of the set pin insertion hole. With this structure, most of the holder insertion part of the elastic set pin is inserted into the set pin insertion hole of the tine mounting holder, and then the locking part is locked in the locking recess provided on the upper surface of the tine mounting holder. Therefore, the work of fixing the elastic set pin to the tine mounting holder becomes easy.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to Examples. FIG. 1 is a perspective view of a plurality of tines T attached to a tine mounting holder H (hereinafter also simply referred to as “holder”) as seen from below, and FIG. 2 is a tine mounting holder. FIG. 4 is a perspective view showing a state where the elastic set pin P is locked and fixed to H, and FIG.
FIG. 4 is a cross-sectional view of the tine mounting holder H, a plurality of tines T, and an elastic set pin P in an exploded state, and FIG. 4 shows a holder insertion portion 21 of the elastic set pin P in the set pin insertion hole 12 of the tine mounting holder H. FIG. 5 is a cross-sectional view during insertion, and FIG. 5 is a cross-sectional view of a state in which a large number of tines T are attached to the tine attachment holder H via elastic set pins P that are half the total number of the tines T.

As shown in FIGS. 1 and 3, the tine T according to the present invention has a cylindrical head portion except the shank 1, which is formed in a cylindrical shape. The sharp piercing part 2 is formed into a tapered cylindrical shape and pierces the turf surface, and on the side surface thereof, a small clod-like core pushed upward through the inside of the piercing part 2. A core discharge hole 3 for discharging the (soil core) is provided except for the piercing portion 2 and the shank 1, and is open to the outer peripheral surface. For this reason, the shank 1 at the head of the tine T has a solid structure, and the set pin insertion hole 4 for inserting a holder insertion portion of an elastic set pin P described later into the shank 1 has a shaft. It is provided so as to penetrate along a perpendicular direction (radial direction in cross-sectional view).

As shown in FIGS. 1 to 3, the tine mounting holder H has a flat rectangular parallelepiped shape and is horizontally long, and both ends of the tine mounting holder H are the pair of rotating disks 33.
It is used by fixing to a and 33b. In the holder H, a plurality of tine mounting holes 11 are provided at regular intervals along the lateral direction, and two tine mounting holes 11 are provided along the front-rear direction (in the state of being mounted on the lawn surface drilling machine A, its traveling direction R). A plurality of tine mounting holes 11 are provided vertically in a state of being opened on the lower surface, and extend along the lateral direction of the plurality of tine mounting holes 11 so as to intersect the two tine mounting holes 11 arranged in the front-rear direction at right angles. The set pin insertion holes 12 of half the total number of the tines T are horizontally penetrating at the same intervals. The inner diameter (d ₁ ) of the set pin insertion hole 12 is the inner diameter (d ₂ ) of the set pin insertion hole 4 provided in the shank 1 of the tine T.
The position of the set pin insertion hole 12 along the vertical direction of the holder H is slightly larger than that of the holder H. When the shank 1 of the tine T is inserted into the tine mounting hole 11 of the holder H, its upper end surface 5 Is set so that the center of the set pin insertion hole 12 and the center of the set pin insertion hole 4 coincide with each other in a state of contacting with the inner wall surface 11a of the ceiling of the tine mounting hole 11. With such a dimensional design, as described later,
Shank 1 of tine T in tine mounting hole 11 of holder H
Is inserted and the tine T is attached to the holder H by the elastic set pin P, the fine movement amount of the tine T with respect to the holder H in the vertical direction is minimized.

Further, at a portion of the upper surface 13 of the holder H close to the front end surface 14 side, at the same position as the set pin insertion hole 12 along the lateral direction, the same number of shallow cones as the set pin insertion hole 12 are provided. A locking recess 15 having a shape is provided. The locking recess 15 has an elastic set pin P, which will be described later.
It is a portion for inserting and locking the locking portion 22 of to lock the entire set pin P to the holder H. Further, the corner portion where the upper surface 13 of the holder H and the front end surface 14 intersect is a chamfered portion 16 which is chamfered to prevent catching when the elastic set pin P is inserted. 1 and 2, reference numeral 17 denotes a lateral direction of the holder H in order to insert a fixing bolt 18 for fixing the holder H into each bracket 36a, 36b of the lawn surface punching machine A. The bolt insertion holes respectively provided at both ends of the.

The elastic set pin P has a substantially U-shape as a whole, and has a straight holder insertion portion 2 which is inserted into the set pin insertion hole 12 of the holder H.
1, a locking portion 22 that is bent and formed in a substantially V shape and is disposed so as to face the holder inserting portion 21, and an elastically deformable portion that connects the holder inserting portion 21 and the locking portion 22. This is a configuration in which three parts including the connecting part 23 are integrated. In addition, the locking portion 22 corresponds to the holder insertion portion 21.
Is arranged at a substantially central portion in the longitudinal direction.

In order to mount a large number of tines T on the tine mounting holder H, as shown in FIGS. 1 and 3 to 5, each of the two tines T provided on the holder H along the front-rear direction. The shank 1 of the tine T is inserted into each of the tine mounting holes 11 so that the set pin insertion hole 4 and the set pin insertion hole 12 provided in the holder H are aligned with each other, and in this state, the holder of the elastic set pin P is inserted. Insertion part 2
1, set pin insertion hole 12 of holder H and tine T
Are inserted into or inserted into the set pin insertion holes 4.

Then, the set pin insertion hole 1 of the holder H
When the holder inserting portion 21 of the elastic set pin P is inserted into the holder 2 by a predetermined length, the connecting portion 23 of the set pin P is elastically deformed, and the locking portion 22 of the connecting portion 23 is held by the holder H, as shown in FIG. When the holder insertion portion 21 is elastically contacted with the chamfered portion 16 and is inserted into the set pin insertion hole 12 of the holder H, the disconnection-deformed connection portion 23 is restored to its original shape, and the upper surface 13 of the holder H is restored. The locking portion 22 is inserted and locked in the locking recess 15 provided, and as shown in FIG. 5, the elastic set pin P is locked to the holder H and the two pieces are locked to the holder H. The tines T are attached at the same time. In this way, all the tines T are attached to the holder H with one touch by the half (5) of the total number (10 in the embodiment) of the elastic set pins P. When the two tines T are attached to the holder H one behind the other as in the embodiment, the two tines T are pushed up through the inside of the piercing part 2 by perforation and the core (earth core) is pushed up. In order to prevent) from staying between the two tines T, it is preferable to arrange the discharge holes 3 so that they are back to back.

Further, as described above, when the tine T is attached to the holder H and the piercing force acts on the tine T, the upper end surface 5 of the solid shank 1 constituting the tine T is Tine mounting hole 11 provided in the holder H
All of the punching load (reaction force) is pressed against the inner wall surface 11a of the ceiling and acts on the inner wall surface 11a of the ceiling, and does not act on the holder insertion portion 21 of the elastic set pin P at all. . In this way, the "piercing load receiving portion", which is the connecting portion with the holder H in the tine T, has the center shaft structure, and moreover, the entire upper end surface 5 of the shank 1 contacts the ceiling inner wall surface 11a of the holder H. Since they are in contact with each other, the structure can sufficiently cope with an excessive drilling force in terms of strength. Therefore, the elastic set pin P only supports the tine T so as not to drop from the holder H, and the load (reaction force) at the time of punching.
Does not suffer at all, so it is sufficient to have the strength to deal with this.

The tine T has the same outer diameter except for the piercing portion 2 at the lower end of the tine T. Therefore, when the tine T is attached to the holder H, the tine T is attached to the holder H. The tine T projecting downward from the lower surface has no stepped portion and no obstacle against the drilling work. Therefore, at the time of punching work, it is possible to punch the lower surface of the holder H as close to the grass surface as possible, and there is no restriction on the depth when punching.

On the other hand, from the tine mounting holder H to the tine T
To remove, simply grasp the connecting portion 23 of the elastic set pin P and pull out the set pin P from the holder H.
The two tines T are simultaneously removed from the holder H.

Thus , according to the present invention, one holder
Two pieces along the front-rear direction (the traveling direction R in the state of being mounted on the lawn surface drilling machine A) with respect to the dar H , or one tine T when more than this is attached at a predetermined interval. A plurality of tines T can be collectively attached and detached by the elastic set pin P of.

Then, in the same manner as described in the section "Prior Art", a holder H having a large number of tines T attached thereto.
Both ends of the bracket are attached to the brackets 36a, 36b of the lawn surface drilling machine A.
A large number of vent holes are punched on the grass surface in the same manner as described above, by fixing it to the turf through the fixing bolts 18.

Further, the elastic set pin P of the above embodiment
Holds the engaging portion 22 bent in a V shape in the holder H.
The entire set pin P is locked in the holder H by being inserted and locked in a locking recess 15 provided in a portion of the upper surface 13 of the upper surface 13 near the insertion side of the set pin insertion hole 12. The stopper 22 is located within the width of the holder H above the holder H and does not project in the front-rear direction. Therefore, the stopper 22 has an advantage of not interfering with peripheral members. However, the locking structure of the elastic set pin P with respect to the holder H is not limited to the above configuration, and for example, the elastic set pin may be locked at a corner portion of the holder H on the side facing the chamfered portion 16.

Further, in the above embodiment, the shank 1 of the head of the tine T is formed in a cylindrical shape for ease of processing, but it may be formed in another shape, for example, a prismatic shape such as a rectangular cross section. Is also possible.

Further, the perforator capable of mounting the tines according to the present invention is limited to the one in which the rotary disk on which the tines are mounted via the holder is driven to rotate as described in the section "Prior Art". Instead, the tine is attached to the lower end of the tine rod that moves up and down by the crank mechanism.
It can also be applied to a self-propelled punch.

[0031]

According to the present invention, there is provided a unitary construction, yet a plurality of tie <br/> emissions of extremely simple structure the shape of the mounting portion, one of the elastic set in a substantially U-shaped It can be attached to the tine mounting holder only by the pin.

[Brief description of drawings]

FIG. 1 is a perspective view of a state in which a large number of tines T are attached to a tine attachment holder H as seen from below.

FIG. 2 is a perspective view showing a state in which an elastic set pin P is locked and fixed to a tine mounting holder H.

FIG. 3 is a sectional view of a tine mounting holder H, a plurality of tines T, and an elastic set pin P in an exploded state.

FIG. 4 is a set pin insertion hole 12 of the tine mounting holder H.
It is sectional drawing in the middle of inserting the holder insertion part 21 of the elastic set pin P in FIG.

FIG. 5 is a cross-sectional view of a state in which a large number of tines T are attached to a tine attachment holder H via elastic set pins P that are half the total number of tines T.

FIG. 6 is an overall side view showing a state in which a turf puncher A is pulled by a tractor B to perform a punching operation.

FIG. 7: Multiple piercing units A ₁ constituting the turf surface piercing machine A
It is a top view of what was arrange | positioned at the left end part.

FIG. 8 is a side view for explaining the locus of the tine T (T ′).

FIG. 9 is a cross-sectional view showing a conventional mounting structure of a tine T ′ having a unitary structure with respect to a tine mounting holder H ′.

[Explanation of symbols]

H: Tine mounting holder P: Elastic set pin T: Tyne 1: Tyne's shank 4: Tine set pin insertion hole 11: Tine mounting hole of holder 12: Set pin insertion hole of holder 15: Locking recess 21: Holder insertion part of elastic set pin 22: Locking part of elastic set pin

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Nagasaki 1 of 87, Kanayama, Komashinmachi, Toyota-shi, Aichi Limited Company President Saki Kogyosho (56) References JP 2001-45807 (JP, A) JP 2000-60214 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A01B 45/00-45/04

Claims (3)

(57) [Claims] 1. A shank of a tine head is inserted into a tine mounting hole provided vertically in the tine mounting holder,
A structure for attaching the tine to the holder via an elastic set pin, the tine mounting holder, set pin insertion hole which intersects perpendicularly to the tine mounting hole plurality are provided, the elastic The set pin is formed in a substantially U shape, and has a linear holder insertion part that is inserted into a set pin insertion hole of the holder, and a locking part that is disposed above the holder and is locked to the holder. And a set pin insertion hole for inserting the holder insertion portion of the elastic set pin is provided in the shank of the tine in a direction perpendicular to the axis, and each tine attachment of the holder is performed. in a state in which the tine shank and inserted into the hole, the set pin insertion hole of the holder, by inserting the holder insertion portion of the elastic set pin, the holder insertion portion The causes are inserted respectively to the set pin insertion holes of the tine, by locking the locking portion to the holder, and one elastic set pin
Allows multiple tines to be attached to the tine mounting holder
A tine mounting structure for turf surface drilling, which is characterized in that 2. The engaging portion of the elastic set pin is bent and formed in a substantially V shape toward the holder insertion portion side.
Mounting structure tine turf surface drilling according to claim 1, wherein the bent portion of the locking portion with the locking recess formed on an upper surface of the holder is configured to be inserted and locked. 3. The mounting structure for a tine for perforating a lawn surface according to claim 2 , wherein the locking recess is provided at an end of the set pin insertion hole on the insertion side.