JP2534333Y2 - Transport claw mounting device - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a mounting device for a transport claw that can be used in a chain stem raising device for a combine, a binder or the like, or a chain used in another transport device. The present invention relates to a transport claw mounting device for mounting a transport claw to a chain via a mounting pin.

(Prior art)

Harvesters for combine harvesters, binders, etc. are equipped with a raising device for raising the pilgrimage stem, and this raising device is a transport claw that can be raised and lowered on a chain wound between upper and lower sprockets. Are mounted with a predetermined pitch.

The transport claws are attached, for example, as shown in FIGS. 8A to 8B in the drawings described in Japanese Utility Model Laid-Open No. 63-186222. That is, the transport claw 2 is provided with a through hole 1b of a chain plate 1a provided above and below the chain 1, and the chain plate 1a
And a rotatable attachment to the chain 1 via an attachment pin 4 inserted into an insertion hole 2c of an attachment portion 2a provided above and below.

The mounting pin 4 is provided with a projection 4a which pushes through the insertion hole 2c of the transfer claw 2 made of synthetic resin and does not pass through the through hole 1b of the chain plate 1a made of a steel plate. The attached mounting pin 4 is structured so that it cannot be driven any further at the position where the projection 4a contacts the end face of the chain plate 1a.

The mounting pin 4 has a short piece 4b on one side and a long piece 4c on the other side around the projection 4a.
When removing, a long piece protruding long from the end face of the mounting part 2a
The short piece is pulled out from the 4c side toward the short piece 4b side.

[Problems to be solved by the invention]

By the way, in the above-mentioned conventional structure, when the mounting pin 4 is driven too much, the protrusion is formed on the end face of the through hole 1b of the chain plate 1a.
4a is deformed and the driving depth of the mounting pin 4 is deepened, and the through hole 1b of the chain plate 1a may be damaged, which makes it difficult to visually confirm the driving depth of the mounting pin 4 during assembly. Atsuta.

In addition, at the time of disassembly, if a problem occurs that the removal direction cannot be visually judged and the protrusion 4a that contacts the chain plate 1a is further driven, the protrusion 4a is formed in the through hole 1b of the chain plate 1a as described above. There has been a problem that it is damaged or the through hole 1b of the chain plate 1a is damaged.

Therefore, the present invention has been made in view of the above-described conventional circumstances to solve the problem, and by providing a large-diameter portion at the short-diameter side end of the mounting pin, the driving depth of the mounting pin is reduced. An object of the present invention is to provide a mounting device for a transport claw which can be visually confirmed and a direction in which a mounting pin is pulled out can be easily known visually.

[Means for solving the problem]

In order to achieve the above object, the present invention is configured such that a chain can be freely rotated through a mounting pin inserted into a through hole of a chain plate provided at the top and bottom and an insertion hole of a mounting portion provided at the top and bottom of the transport claw over the plate. In the claw to be attached to the pin, a circumferential projection is provided at a position defined by the long piece and the short piece of the pin, and a large-diameter portion having a diameter larger than the diameter of the mounting pin is provided at the end of the short piece. When the mounting pin is driven into the insertion hole and the through-hole, the lower surface of the large diameter portion on the short side and the end surface of the mounting portion substantially abut at the position where the projection abuts the end surface of the insertion hole of the plate. It is configured in length.

[Action]

Therefore, the through holes of the chain plate 1a provided at the top and bottom
1b, and the transport claw 2 rotatably mounted on the chain 1 via the mounting pin 4 inserted into the insertion hole 2c of the mounting portion 2a provided vertically above and below the plate 1a of the transport claw 2. A circumferential projection 4a is provided at a position defined by the long piece 4c and the short piece 4b of the pin 4, and a mounting pin 4 is provided at the end on the short piece 4b side.
When the mounting pin 4 is driven into the insertion hole 2c and the through hole 1b, the projection 4a is provided.
At the position where the end faces the end surface of the through hole 1b of the chain plate 1a, the lower surface of the large-diameter portion 4d on the short piece 4b side substantially contacts the end surface of the mounting portion 2a. It is possible to know the driving depth in contact with the end face.

As a result, it is possible to prevent the protrusion 4a from being deformed due to excessive driving of the mounting pin 4 as in the prior art, thereby preventing the mounting pin 4 from being driven deeper or damaging the through hole 1b of the chain plate 1a.

A large-diameter portion on the driving side of the mounting pin 4 for closing the insertion hole 2c.
It is visually determined that 4d is positioned and is not the pull-out side, and the mounting pin 4 may be pulled out from the long piece 4c on the side opposite to the large-diameter portion 4d side. The protrusion 4a on the mounting pin side, which is generated by further driving of the protrusion 4a in contact with the shaft, and the through-hole 1b on the chain plate 1a side are prevented from being damaged.

〔Example〕

Hereinafter, drawings illustrating the present invention as an embodiment will be described.

As shown in FIGS. 6A and 6B, the binder 10 is constituted as follows.

In other words, the left divider 11 and the right divider 12 are disposed opposite to each other at a predetermined cutting width on both left and right sides in front of the fuselage.
A front end of a left cover 13 extending obliquely rearward is connected and fixed to the rear of the unit 11, and a front end of a right cover 14 extending obliquely rearward and upward is connected and fixed to the rear of the right divider 12.

A raising case 15 extending diagonally rearward is disposed between the left and right dividers 11 and 12.
A lower sprocket (not shown) and an upper sprocket (not shown) are rotatably supported on both upper and lower sides, and a chain 1 shown in FIG. 3 is wrapped around both sprockets. A plurality of transport claws 2 are pivotally connected to the chain 1 so as to be freely rotatable.

A guide case 16 extending diagonally rearward at a predetermined interval is disposed on the left side of the raising case 15.
A raising path 17 is formed between the raising case 15 and the raising shaft. Behind the dividers 11 and 12, a clipper-type cutting blade 19 is disposed in a lateral direction, and the right side of the cutting blade 19 is connected to a deck 20 for transporting the cut stems to the binding position. I have.

The deck 20 is provided with a binding portion 21 that binds the cut stems and discharges them in the right lateral direction. Since the upper portion of the binding portion 21 is located at a position covered by the right cover 14 extending obliquely rearward, the right cover 14 is formed of a transparent plate material such as synthetic resin, so that the fixed handle 22 extending rearward of the fuselage. The operating state of the binding unit 21 can be visually confirmed from the visual position O of the operator who operates the vehicle, and the front view of the right divider 12 can also be visually confirmed.

Below the combing case 15, a leaning guide plate 23 whose base end is fixed to the case 16 and extends under the guide case 16 and extends toward the binding portion 21 is provided obliquely rearward and inclined. Guide the stalk culm from the path 17 in the lateral direction and move it
Behind the leaning guide plate 23, a one-wheel type traveling wheel located approximately at the center of the width of the fuselage is provided.
24 are provided, and the traveling wheels 24 are attached to wheels 26 that protrude rightward from a left-sided Mitsui case 25, but the Mission case 25 extends obliquely rearward. I have. An engine E located behind the traveling wheels 24 is fixed to the upper left side of the mission case 25. In FIG. 6, reference numeral 27 denotes a sweeper of the binding unit 21.

The running wheels 24 are configured as shown in FIG. In other words, the traveling wheels 24 are mounted on an axle 26 projecting rightward from the mission case 25.
Outer disk 29 that can be mounted on 26 via mounting pins
And an inner disk 30 which is fitted to a spline provided on the axle 26 and is slidable along the axis of the axle 26 at a predetermined interval, facing each other. The low-pressure tire 31 is mounted, but the tube 32 provided inside the low-pressure tire 31 has an air-pressure adjusting tube 34 that is narrower than the width located inside the low-pressure tire 31 and extends toward the center. The adjusting tube 34 is formed integrally with a bottom portion 34a having a diameter larger than the outer diameter of the axle 26 at the center thereof.

A boss 30a is formed integrally with the inner disk 30, and a concave groove 30b formed integrally with the boss 30a is provided with a shiftable swingable left and right centering on a fulcrum shaft 33a on the fuselage side. One end of the arm 33 is connected. Further, the body is provided with an operation lever 35 which can swing and fix in the left-right direction about a fulcrum shaft 35a. One end of the operation lever 35 and the other end of the shift arm 33 are pivotally connected via a rod 36. Are linked.

Therefore, when the mowing work is performed in the field, the traveling wheels 24 return the operation lever 35 to the “low” side shown by the solid line, and move the disc 30 with respect to the disc 29 to the right side in the figure, so that the two discs 29 and 30 are moved. Is widened, the air moves to the side of the tube 32 and the air pressure adjusting tube 34,
As shown in FIG. 6B, the running wheel 24 has a contact length N depending on the weight of the fuselage.
As the contact area becomes large, the vehicle can run without slip.

However, when traveling on the road with this large contact area,
Rolling resistance and sliding resistance increase and loss occurs, but when traveling on this road, the operating lever 35 is set to the “high” position indicated by the two-dot chain line.
When the disc 30 is moved to the left side of the figure with respect to the disc 29, and the distance T between the discs 29 and 30 is reduced, the air on the air pressure adjusting tube 34 moves to the tube 32, and the traveling wheel Since the contact area of 34 is small, it is possible to drive on the road without any loss.

Although not shown, the air pressure can be adjusted at the intermediate position between the heights by using the air pressure adjustment tube 34 in the same manner as described above.

Next, FIGS. 1 to 5 will be described. The above-described chain 1 is provided with upper and lower chain plates 1a at predetermined intervals, each of the chain plates 1a is provided with a projection 1c having a through hole 1b, and a through tube 1d is formed in the through hole 1b. It is fitted and fixed.

The transport claw 2 having the mounting portions 2a formed above and below the chain plate 1a is formed from a synthetic resin material.
2a is provided with cam portions 2b, 2b at the front and rear positions which are guided in contact with the guide plate 3 fixed to the raising path 17 side of the chain case 15, so that the raising path 17 stands up on the ascending stroke. , And in a descending stroke, it moves in a lying posture. The transport claw 2 has an insertion hole 2c formed through a concave portion 2e provided in the mounting portion 2a, and each upper and lower chain plate is provided inside the mounting portion 2a having a U-shaped cross section.
1a is inserted, the protrusion 4a is formed with a gap H
A space 2d for insertion is formed.

The mounting pin 4 for attaching the transport claw 2 to the chain plate 1a is formed of a round bar as shown in FIG. 2, but is larger than the diameter of the insertion hole 2c provided in the transport claw 2 and the diameter of the through hole 1b provided in the chain 1. The peripheral surface is biased to one side in the longitudinal direction, and a protrusion 4a having a diameter slightly larger than the diameter of the insertion hole 2c is extruded in the circumferential direction and an appropriate number is formed by an automatic processing machine. Individually formed.

The projections 4a are formed by disposing discontinuous projections in an annular shape as shown in FIGS. 2A and 2B or continuously formed as shown in FIG. 2C. The protruding portion 4a is provided at a position partitioned into a long piece 4c having a length L and a short piece 4d having a length S. When attaching the transport claw 2 to the chain 1, the tip of the long piece 4c side is inserted into the insertion hole 2c and inserted. However, the projection 4a is attached to the short piece 4d side end of the mounting pin 4.
The diameter is larger than the diameter of the mounting pin 4, so that a large-diameter portion 4d larger than the diameter of the mounting pin 4 is integrally formed.

When the mounting pin 4 is inserted, as shown in FIGS. 1 and 3, the insertion hole 2c on the side where the mounting pin 4 is inserted is the first insertion hole 2f, and the side where the long piece 4c of the mounting pin 4 protrudes. Is referred to as a second insertion hole 2g. Therefore, when the mounting pin 4 is inserted through the lower insertion hole 2g, the insertion hole 2g is interpreted as the first insertion hole.

Similarly, the surface adjacent to the chain plate 1a on the first insertion hole 2f side is defined as a first contact surface 2h, and the other surface facing the contact surface 2h is defined as a second contact surface 2i. Therefore, when the mounting pin 4 is inserted through the second insertion hole 2g, the first contact surface is 2i and the second contact surface is 2h.

Now, in the present invention, the dimensions between the insertion hole 2c and the mounting pin 4 have the following relationship.

The length L of the long piece 4c of the mounting pin 4 is larger than the distance l between the entrance of the first insertion hole 2f and the second contact surface 2i. That is, before the mounting pin 4 is driven into the insertion hole 2c of the transport claw 2 as shown in FIG.
The tip is inserted and held in 2g. And the first
As shown in the figure, the first contact surface is configured such that the distance 1 between 2h and the outlet of the second insertion hole 2g is shorter than the length L of the long piece 4c. The long piece 4c of the mounting pin 4 is protected in the concave portion 2e formed on the back surface of the cam portion 2b when it is driven into the transport claw 2 as shown in FIG. 1, and does not protrude from the end surface of the cam portion 2b. It has a length.

The structure of the projection 4a may be indicated by a dotted line in FIG. 2B or may be annularly protruded all around as shown in FIG. 2C. It can also be formed.

The length S of the short piece 4b is equal to the first insertion hole 2f as shown in FIG.
Plate on the side close to the entrance of the first and the first insertion hole 2f
1a is longer than the distance n between the first
As shown in the figure, the mounting pins 4 are driven into the chain plate 1a.
When the protruding portion 4a comes into contact with the first insertion hole 2f, the entrance end surface of the first insertion hole 2f and the lower surface of the large diameter portion 4d are substantially brought into contact with each other. A gap s is formed between the lower surface of the diameter portion 4d and the transport claw 2 so that the conveyance claw 2 can be pivotally positioned without pressing the first insertion hole 2f side of the mounting portion 2a with the large diameter portion 4d.

Therefore, when assembling the transport claw 2 as shown in FIG. 1, the long knit 4c of the mounting pin 4 is inserted into the first insertion hole 2f until the annular projection 4a comes out of the first contact surface 2h. Tap or push in from above to remove the annular projection 4a.
To the gap H between the first contact surface 2h and the chain plate 1a.
And the distal end of the long piece 4c of the mounting pin 4 is inserted into the insertion hole 2c of the mounting portion 2a located below, and is housed with the distal end protruding into the recess 2e.

In this way, the mounting pin 4 resists the elasticity of the inner wall surface of the insertion hole 2c (first insertion hole 2f) of the transfer claw 2 made of synthetic resin, and after passing through the inner wall surface while slightly damaging it, Since the diameter of the protrusion 4a returns to the diameter, the protrusion 4a arriving at the gap H between the first contact surface 2h and the chain plate 1a can be easily assembled without falling upward and downward in use. it can.

When replacing the transport claw 2, the first insertion hole 2f
Since it is visually determined that the large-diameter portion 4d that closes the entrance side is not located in the removing direction, hit or press the end of the long piece 4c protruding into the recess 2e on the second insertion hole 2g side. become.
In this case, the length L of the long piece 4c is larger than the distance l between the first contact surface 2h and the second insertion hole 2g, and there is no large diameter portion 4d. 4 can be easily determined, the long piece 4c is easily hit, and the mounting pin 4 can be easily removed by passing the projection 4a through the first insertion hole 2f again. Can be used again.

In the above, an example has been described in which the transport claw is raised via the mounting pin and attached to the chain of the apparatus. However, this transport claw can be attached to the chain used for another transport apparatus via the mounting pin.

[Effect of the invention]

As described above, according to the present invention, the chain is turned to the chain via the mounting pins inserted into the through holes of the chain plate provided vertically and the insertion holes of the mounting portions provided above and below the plate of the transport claw. For the transport claw that can be movably mounted, a circumferential projection is provided at a position where the pin is partitioned into the long piece and the short piece, and the end of the short piece has a diameter larger than the diameter of the mounting pin. By providing the large-diameter portion, when the mounting pin is driven into the insertion hole and the through-hole, the projection comes into contact with the end surface of the through-hole of the chain plate. And the projection depth of the mounting pin is in contact with the end surface of the chain plate.

As a result, it is possible to prevent the protrusions from being deformed due to excessive driving of the mounting pin and the driving depth of the mounting pin from being deepened and the through hole of the chain plate from being damaged as in the related art.

Further, it is visually determined that the large-diameter portion that closes the insertion hole is located on the driving side of the mounting pin and is not in the removing direction, and the mounting pin may be pulled out from the long side opposite to the side where the large-diameter portion is located. Therefore, the trouble of pulling out from the opposite direction is resolved, and the protrusion on the mounting pin side, which is caused by further driving of the protrusion in contact with the chain plate, and the through hole on the chain plate side are damaged. Can be prevented.

[Brief description of the drawings]

1 to 7 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional side view of a main part showing a completed state of attachment of a transport claw, FIG.
Is a side view of the mounting pin, FIG. 2B is a plan view of the mounting pin, FIG. 2C is a side view of the mounting pin showing a different type, and FIG. FIG. 4 is a perspective view showing a state in which a conveying claw is attached to a chain, and FIG.
The figure is a cross-sectional front view of the stem raising case, FIG. 6A is a plan view of a binder embodying the present invention, FIG. 6B is a side view of FIG. 6A, and FIG. It is. FIG. 8 shows a conventional example, FIG. 8A is a longitudinal sectional side view of a main part showing a completed state of attachment of a transport claw, and FIG. 8B is a perspective view of an attachment pin. 1 ... chain, 1a ... chain plate, 1b ... through-hole,
1c: Projecting portion, 1d: Through hole, 2: Transport claw, 2a: Mounting portion, 2b: Cam portion, 2c: Insertion hole, 2d: Space, 2e
... recess, 2f ... first insertion hole, 2g ... second insertion hole, 2h
... First contact surface, 2i Second contact surface, 4 Mounting pin, 4a Projection, 4b Short piece, 4c Long piece, 4d Large diameter section, H Gap, s ... Gap.

Claims (1)

(57) [Scope of request for utility model registration] 1. A through hole of a chain plate provided on the upper and lower sides,
In a transport claw that is rotatably attached to a chain via an attachment pin inserted into an insertion hole of an attachment portion provided vertically above and below the plate of the transport claw, at a position defined by a long piece and a short piece of the pin, Along with providing a circumferential projection, providing a large diameter portion larger than the diameter of the mounting pin at the end of the short piece,
When the mounting pin is driven into the insertion hole and the through-hole, the projecting portion is in contact with the end surface of the through-hole of the plate, and the lower surface of the large-diameter portion of the short side substantially contacts the end surface of the mounting portion. A transport claw mounting device configured as described above.