JPH071Y2 - Tiller mounting device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for mounting a plowing claw which is mounted for performing plowing work.

[Problems to be Solved by Prior Art and Invention] In general, this seed tilling claw is fitted with a claw holder protruding from the tilling shaft, and using a mounting pin that is retained by a retaining pin. It is supposed to be installed. However, conventionally, the mounting pin has been loose in the axial direction of the mounting pin so that the retaining pin can be easily inserted and removed. For this reason, there is a problem in that the retaining pin is unintentionally pulled out during the tilling work and the tilling claw comes off, resulting in lack of reliability, which is a problem.

[Means for Solving the Problem] The present invention has been made in view of the above circumstances, and was devised with the object of providing a device for mounting a tilling claw capable of eliminating these drawbacks. What is claimed is: 1. A mounting device for a tilling claw, wherein a mating tilling claw is attached by using a mounting pin that is retained by a retaining pin, comprising: a penetrating portion that penetrates the mounting pin and an R-shaped portion that follows the outer periphery of the mounting pin. It is interposed between the R-shaped retainer pin having the and the mounting pin head and one side surface of the claw holder, and the mounting pin is urged toward the head to cause the retaining pin to move to the other side surface of the claw holder. And a pressing body that elastically deforms so as to come into close contact with the other side surface portion of the claw holder, and the R-shaped portion of the retaining pin that closely contacts the other side surface portion of the claw holder fits in the retaining shape. Separated from the penetrating mounting pin and It is characterized in that it comprises a retaining body which is set so that the amount of protrusion from the other side surface of the holder is smaller than the amount of movement of the mounting pin head in the direction of the tip end against the pressing body.

Further, the present invention is capable of reliably preventing the retaining pin from being accidentally pulled out by eliminating the play of the mounting pin by this configuration.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a tubular cultivating shaft which is mounted on a cultivator, and a plurality of claw holders 2 are provided on the cultivating shaft 1 so as to project in the radial direction. The claw holder 2 of this embodiment has a rectangular tube shape in a plan view, and the base end portion of the tilling claw 3 can be loosely fitted therein with the wide portion corresponding to the wide portion of the claw holder 2. It is becoming like this. When the plowing load is applied to the plowing claws 3 as the plowing shaft 1 rotates, the plowing claws 3 are
It swings back and forth with a mounting pin 4 as a fulcrum described later, so that the wide portions of the fitting back end side and the fitting starting end side on both sides of the mounting pin 4 penetrating portion of the claw base end part move forward and backward of the claw holder 3. It bites into the narrow portion and is sandwiched in a close-fitting manner, whereby it is firmly fixed.

The mounting pin 4 penetrates the mounting holes 2a, 3a formed in the claw holder 2 and the tilling claw 3 from one side to the other side, and the R-shaped retaining pin 5 is inserted into the penetrating tip. The hole 4a is provided. A pressing body 6 is interposed between the claw holder 2 and the mounting pin head 4b, and the pressing body 6 is formed by a leaf spring having a curved surface shape. When the mounting pin 4 is retained by the retaining pin 5 and is pushed in the penetrating direction as shown in FIG. 4 to forcibly elastically deform to the deepest penetrating state, the retaining pin 4 5 is spaced from the claw holder 2 with a space L, and the retaining pin 5 can be inserted and removed as necessary, but when the pushing of the mounting pin 4 is stopped and the pressing body 6 is elastically restored as shown in FIG. The retaining pin 5 comes into close contact with the pin hole 4a when the retaining pin 5 comes into contact with the claw holder 2, whereby the looseness of the mounting pin 4 is absorbed and the retaining pin 5 is restricted from coming off. Has been done. Further, in this embodiment, a retaining body 7 is provided so as to protrude from the retaining side of the retaining pin 5 of the claw holder 2. In other words, the retaining body 7 has a protruding amount that is substantially the same as or lower than the position of the retaining pin 5 in the state where the mounting pin 4 is pushed deepest, and the state where it is pushed deepest. Then
The retaining pin 5 is configured to freely rotate without the interference of the retaining body 7 with the portion penetrating the retaining hole 4a as a spindle, but the R portion faces the retaining body 7. When the pushing of the mounting pin 4 is stopped in the squeezed state, the R portion is fitted to the R-shaped stop surface 7a of the retaining body 7 to further prevent inadvertent retaining of the retaining pin 5. It is becoming like this.

Further, this is a pad member made of a rubber elastic material for preventing the front and rear end portions of the tilling claw 3 fitted and attached to the claw holder 2 from directly contacting the front and rear surfaces of the inner cylinder of the claw holder 2. 8
To the front in the rotational direction, and when the base end of the tilling claw 3 is broken, the debris 3b remaining in the claw holder 2 is rotated around the axis of the mounting pin to release the clamping by the claw holder 2. The protruding hole 2b is formed in the front and back so that

In the embodiment of the present invention constructed as described above, the tilling claw 3 is detachably attached to the claw holder 2 by using the mounting pin 4. In this case, the pressing body 5 is attached to the mounting pin 4. It is provided and absorbs the play, and the retaining pin 5
Are getting closer. As a result, the retaining pin 5
Therefore, it is possible to reliably prevent the problem that the retaining pin 5 comes off during the tilling work and the tilling claw 3 falls off during the tilling work.

Moreover, since this retainer retains the retainer pin 5 more completely by using the retainer body 7, it is possible to further prevent the tiller claw 3 from falling off. It is convenient.

Further, in the embodiment, the contact member 8 provided on the front side in the rotational direction of the claw holder 2 can greatly reduce the intrusion of mud into the gap between the claw holder 2 and the tilling claw 3, whereby the tilling claw 3 can be removed. In the case of replacement, there is an advantage that the detaching work of the tilling claw 3 with respect to the claw holder 2 becomes easy, and unpleasant interference sound between the tilling claw 3 and the claw holder 2 generated during idling can be significantly reduced. . Of course, in this case, the padding member 8 may be provided on the side of the tilling claw 3.

Further, this is the remaining debris when the base end of the tilling claw 3 is damaged and the debris 3b remains in the claw holder 3.
The 3b bites strongly into the claw holder 2 and is often very difficult to remove, but in such a case, a suitable rod may be pierced through the projecting hole 2b to strike or smash the fragment 3b. Conveniently, the bite 3b can be easily taken out by removing the bite sandwiching by the claw holder 2. It goes without saying that only one such hole may be provided.

The present invention is not limited to the above-mentioned embodiment, and for example, a substantially U-shaped pawl holder 2 as shown in FIGS. It is also possible to fit the base end of the above. Further, the pressing body may be elastically deformable, and accordingly, an object such as a disc spring can be used.

[Effects] In summary, since the present invention is configured as described above, the attachment pin for attaching the plowing pawl to the pawl holder has an elastically deformable pressing body for attaching / detaching the retaining pin. This will absorb the backlash necessary for sewage, and the retaining pin will be in close contact, so it is possible to reliably prevent the retaining pin from accidentally coming off and the plowing claws falling out during cultivating work. As a result, it is possible to attach the claw with extremely high reliability.

In addition, since the retaining pin R-shaped portion is fitted into the retaining body in the closely contacted state and is in the retaining state, there is no problem that the retaining pin accidentally comes off and the mounting pin falls off. Reliable mounting of the plowing claw can be done easily. Moreover,
With this retaining pin, as the mounting pin head is moved toward the tip end side against the pressing body, the retaining pin R-shaped portion is in a state where the engagement with the retaining body is released. In this pressing movement state, the retaining pin can be attached / detached, and as a result, the R-shaped portion fits into the retaining body, so that the retaining pin can be surely retained. There is almost no fear that workability will decrease.

[Brief description of drawings]

The drawings show an embodiment of a tiller attachment device according to the present invention. Fig. 1 is a side view of the tiller attachment part, and Figs. 2A and 2B are cutaway views of the tiller attachment part. Sectional view, transverse sectional view, FIG. 3 is a sectional view showing a mounted state, FIG. 4 is a sectional view showing a pushed-in state, FIG. 5 is an exploded sectional view of a mounting portion,
6A, 6B, 6C, and 6C are operation explanatory views showing a broken state, and FIGS. 7A, 7B, 8A and 8B are operation explanatory views showing a mounting portion of the tilling claw showing the second embodiment. In the figure, 2 is a claw holder, 3 is a plowing claw, 4 is a mounting pin, 5
Is a retaining pin, 6 is a pressing body, and 7 is a retaining body.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A tilling claw mounting device for mounting a tilling claw fitted in a claw holder using a mounting pin that is retained by a retaining pin. It is interposed between the R-shaped retaining pin having an R-shaped portion along the outer periphery of the mounting pin, the mounting pin head and one side surface of the claw holder, and urges the mounting pin toward the head. The pressing body that elastically deforms so as to bring the retaining pin into close contact with the other side surface of the claw holder and the R-shaped portion of the retaining pin that is integrally projectingly provided on the other side surface of the claw holder and that closely contacts the other side surface of the claw holder. It is separated from the penetrating mounting pin so that it fits in a retaining shape, and the amount of protrusion from the other side surface of the claw holder is set smaller than the amount of movement of the mounting pin head in the direction of the tip end against the pressing body. Mounting of a plowing claw characterized by consisting of a stopper Apparatus.