JP7034058B2 - jig - Google Patents

Description

The present invention relates to a jig used when attaching and detaching a transport member to and from a chain.

Patent Document 1 describes an ordinary combine equipped with a feeder. The feeder includes a pair of chains wound around a sprocket and a drum, a plurality of transport members spanned over the pair of chains, and a case for accommodating the chain and the transport members. The transport member is fixed to the flange portion provided on each of the chains by a plurality of bolts. The feeder transports all the culms of the harvested crops put into the case by means of transport members.

Japanese Unexamined Patent Publication No. 2017-153413

When manufacturing or maintaining the feeder, it is necessary to attach / detach the transport member to / from the chain, and at that time, a plurality of bolts must be tightened / loosened. Conventional tools such as spanners, wrenches, and screwdrivers tighten, loosen, and prevent rotation of only one bolt. Therefore, in order to attach / detach the transport member, it is necessary to perform the work many times with one tool or to use a plurality of tools. In addition, it is necessary to support the tool by hand so that it will not fall off. In these respects, there was room for improvement in the work of attaching and detaching the transport member to the chain.
was there.

An object of the present invention is to provide a means for improving the work efficiency of the work of attaching / detaching a transport member to a chain.

The jig of the present invention has a plurality of endless chains wound around a driving wheel body and a driven wheel body in a state parallel to each other, and the chains are arranged at intervals along the extending direction of the chains. It has a plurality of transport members spanned over the plurality of chains in a state orthogonal to the extending direction of the chain, and a case for accommodating the plurality of chains and the transport members, and the transport members are each provided. A jig for a transport device that is fixed to a flange portion provided on the chain of the above chain by a plurality of bolts and that transports all the harvested crops put into the case by the transport member. It is used when the transport member is attached to and detached from the chain, and in each of the transport members, a holding portion that holds the plurality of bolts in a state of being prevented from rotating at the same time, and at least one of the flange portion and the transport member. It is characterized by comprising a connecting portion connected to the above.

According to the above-mentioned feature configuration, since the holding portion holds a plurality of bolts in a state of being detented at the same time, the work of attaching and detaching the plurality of bolts fixing the transport member to the flange portion can be efficiently performed. .. Further, since the connecting portion is connected to at least one of the flange portion and the transport member, it is not necessary for the jig to be supported by the flange portion or the transport member and supported by hand, which facilitates the work. Therefore, it is possible to improve the work efficiency of the work of attaching and detaching the transport member to the chain.

In the present invention, it is preferable that the connecting portion includes a magnet, and the connecting portion is connected to at least one of the flange portion and the transport member by the magnetic force of the magnet.

According to this characteristic configuration, the jig can be supported by the flange portion or the transport member with a simple configuration, and in addition, the jig can be easily attached to and detached from the flange portion or the transport member. Therefore, the work efficiency of the work of attaching and detaching the transport member to the chain can be further improved.

In the present invention, the holding portion and the connecting portion are provided on the same surface side, and the connecting portion protrudes larger than the thickness of the flange portion with respect to the holding portion, and the connecting portion and the holding portion are provided. It is preferable that the flange portion can be fitted into the step portion formed by the above.

According to this characteristic configuration, even when the flange portion is fitted in the stepped portion, the connecting portion protruding from the holding portion can come into contact with the transport member, so that the jig can be reliably used. It is supported, and the work efficiency of the work of attaching and detaching the transport member to the chain can be further improved.

In the present invention, the flange portion is used for a transport device provided on both the left and right sides of the chain, and the chain is sandwiched when the connecting portion is connected to at least one of the flange portion and the transport member. A right unit and a left unit provided so as to be separated from each other to the left and right, and a support unit for connecting and supporting the right unit and the left unit are provided. It is preferable to have the connecting portion.

According to this feature configuration, the right unit holds the bolt on the right side of the chain and connects it to the flange or transport member, and the left unit holds the bolt on the left side of the chain and connects it to the flange or transport member. be able to. That is, while the jig is reliably supported, the bolts can be attached to and detached from the flanges on the left and right sides of the chain with one jig, further improving the work efficiency of attaching and detaching the transport member to the chain. be able to.

It is a left side view of the combine. It is a left side view sectional view of a feeder. It is a top view sectional view of a feeder. It is a top view of the bolt holder. It is a right side view of a bolt holder. It is a rear view of a bolt holder. It is a figure which shows the assembly procedure of a feeder chain. It is a figure which shows the assembly procedure of a feeder chain. It is a figure which shows the assembly procedure of a feeder chain.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The bolt holder A (an example of a “jig”) according to the present invention is a jig for a feeder 6 (an example of a “conveyor”) of a harvester, and a transport member 43 is attached to and detached from a chain 42. Used when. The feeder 6 includes a plurality of endless chains 42 wound around a sprocket 39 (an example of a “driving wheel”) and a drum 41 (an example of a “driven wheel”) in a state parallel to each other, and a chain 42. Accommodates a plurality of transport members 43, which are arranged at intervals along the extension direction and are bridged over a plurality of chains 42 in a state orthogonal to the extension direction of the chain 42, and a plurality of chains 42 and transport members 43. The case 37 is provided, and the transport member 43 is fixed to the flange portion f provided on each chain 42 by a plurality of hexagonal bolts B (an example of a “bolt”), and is attached to the case 37. All the introduced harvested crops are transported by the transport member 43.

First, the harvester will be described. FIG. 1 shows an ordinary combine that is an example of a harvester. In a normal combine, an axial flow type threshing device 3 and a grain tank 4 for storing grains are arranged side by side on a traveling machine 2 provided with a pair of left and right crawler traveling devices 1.

An operation unit 5 is provided in front of the grain tank 4.
A feeder 6 for transporting a cutting grain culm is connected to the front portion of the threshing device 3 so as to swing up and down around the horizontal axis core, and a cutting portion 7 having a cutting width substantially equivalent to the width of the machine body is connected to the front end of the feeder 6. It is connected. The feeder 6 conveys all the culms of the harvested crops cut by the cutting unit 7 to the threshing device 3.

Above the front part of the cutting part 7, a rotary reel 8 for scraping the planted crop to the rear is equipped. Further, a grain discharging device 9 for discharging the grains stored in the grain tank 4 to the outside is provided.

The engine 11 is mounted below the driver's seat 10 in the driver's unit 5, and the mission case 12 is provided below the front of the machine body. Further, a main transmission (not shown) composed of a hydrostatic continuously variable transmission is provided on the upper lateral side of the mission case 12.

The cutting section 7 is a cutting section frame 27 formed by connecting a square pipe, an angle member having an L-shaped cross section, and the like, a back plate 28 forming a back surface, a transport deck 29 forming a bottom surface, and left and right forming left and right side surfaces. Each of the pair of side plates 30 is connected to form a frame structure to be attached and fixed.
A clipper-type cutting device 32 is deployed along the front end of the transport deck 29 over the left and right side plates 30. Further, a lateral feed auger 33 for collecting and transporting the cut grain culms toward the middle side in the width direction of the machine body is erected over the left and right side plates 30 so that the cut grain culms can be supplied to the front end entrance of the feeder 6. ing.

As shown in FIGS. 1 to 3, the feeder 6 is formed in a square tubular case 37, and inside the case 37, along the left-right direction of the traveling machine body 2 toward the rear end portion in the transport direction. A drive shaft 38 provided so as to be rotatable around the horizontal axis X1, a pair of sprockets 39 provided on the drive shaft 38 at intervals in the horizontal axis X1 direction, and a case 37 in the transport direction. On the front end side, the tension of the drum 41 that is rotatably supported around the horizontal axis X2, the feeder chain F that is hung between each sprocket 39 and the drum 41, and the feeder chain F is applied. It is provided with an adjustable tension adjusting mechanism 44.

The feeder chain F includes a pair of endless chains 42 and a plurality of transport members 43. The chain 42 is wound around the sprocket 39 and the drum 41 in a state parallel to each other. The transport members 43 are arranged at intervals along the extending direction of the chain 42, and are bridged over the pair of chains 42 in a state orthogonal to the extending direction (front-back direction) of the chain 42. The transport member 43 is an iron long plate-shaped member having a U-shaped cross section.

The transport member 43 is fixed to the flange portion f provided on each chain 42 by a plurality of hexagon bolts B. In the present embodiment, the flange portions f are provided on both the left and right sides of the chain 42. The flange portion f is provided with one bolt hole. On the right side of the chain 42, the flange portion f and the transport member 43 are fixed by one hexagon bolt B and a nut, and on the left side of the chain 42, the flange portion f and the transport member 43 are fixed by one hexagon bolt B and a nut. Will be done. That is, one transport member 43 is fixed to the flange portion f by two hexagon bolts B and two nuts.

The power from the engine 11 is transmitted to the drive shaft 38, and the pair of sprockets 39 rotate together with the drive shaft 38 to rotate the chain 42. With the rotation of the chain 42, the transport member 43 moves along the transport direction, and the cut grain culm can be transported.

[Bolt holder]
As shown in FIGS. 4, 5 and 6, the bolt holder A includes a right unit 51, a left unit 52, and a support unit 53. The right unit 51 and the left unit 52 each include a holding portion 61, a handle 62, and a connecting portion 63. The connecting portion 63 includes a magnet 64. Hereinafter, the direction of [F] shown in FIG. 4-6 is the “front side” of the bolt holder A, the direction of [B] is the “rear side” of the bolt holder A, and the direction of [L] is the direction of the bolt holder A. The direction of "left side" and [R] is defined as the [right side] of the bolt holder A.

The right unit 51 and the left unit 52 are provided in a state of being separated from each other to the left and right so as to sandwich the chain 42 when the transport member 43 is attached to and detached from the chain 42 by using the bolt holder A. The right unit 51 and the left unit 52 are connected by a support unit 53 in a state where a space S is provided between them and separated from each other. The support unit 53 is a round bar-shaped member. The right end of the support unit 53 is fixed to the rear surface of the right unit 51, and the left end of the support unit 53 is fixed to the rear surface of the left unit 52. The intermediate portion of the support unit 53 is curved upward and diagonally backward.

The right unit 51 and the left unit 52 are hollow square cylinder-shaped members, and are arranged in a posture in which the central axis faces the left-right direction. One holding portion 61 is arranged on the left side portion of the right unit 51 in a state where it can rotate and swing around an axis extending in the vertical direction. The handle 62 is fixed to the holding portion 61. The handle 62 can rotate and swing with respect to the right unit 51 together with the holding portion 61. One connecting portion 63 is arranged on the right side portion of the right unit 51. The holding portion 61 and the connecting portion 63 are supported by the right unit 51 in a state of being arranged in the left-right direction.

The left unit 52 has a symmetrical shape with the right unit 51. That is, one holding portion 61 is arranged on the right side portion of the left unit 52. One connecting portion 63 is arranged on the left side portion of the left unit 52.

The holding portion 61 is a cylindrical member, and is arranged in a posture in which the central axis faces in the vertical direction. A hexagonal columnar insertion port 61a into which the head of the hexagon bolt B can be inserted is formed on the upper surface of the holding portion 61. That is, one holding portion 61 holds one hexagon bolt B in a derotated state.

The connecting portion 63 is formed by screwing bolts and nuts with the upper wall portion of the right unit 51 (or the left unit 52) interposed therebetween. A magnet 64 is embedded in the upper surface of the connecting portion 63. The connecting portion 63 is configured to be attractable to the iron transport member 43 by the magnetic force of the magnet 64. That is, the connecting portion 63 is connected to the conveying member 43 by the magnetic force of the magnet 64.

The insertion port 61a of the holding portion 61 and the magnet 64 of the connecting portion 63 are both provided on the upper surface side of the right unit 51 and the left unit 52. The upper surface of the connecting portion 63 is located above the upper surface of the holding portion 61. The distance between the upper surface of the connecting portion 63 and the upper surface of the holding portion 61 is larger than the thickness of the flange portion f of the feeder chain F. That is, the connecting portion 63 projects more than the thickness of the flange portion f with respect to the holding portion 61. As a result, as shown in FIG. 9, the flange portion f can be fitted into the step portion D formed by the upper surface of the connecting portion 63 and the upper surface of the holding portion 61. Further, the width of the holding portion 61 in the left-right direction is larger than the width of the flange portion f.

[Assembly of feeder chain]
A procedure for assembling the feeder chain F using the bolt holder A will be described with reference to FIGS. 7, 8 and 9. For assembly, a chain holder C is used in addition to the bolt holder A. The chain holder C comprises a pair of sprockets 72 supported by a rotatable shaft 71.

First, the chain holder C holds the pair of chains 42. Specifically, the chain 42 is held by the pair of sprockets 72 in a state where the flange portions f are aligned between the pair of chains 42.

Next, as shown in FIG. 8, the transport member 43 is placed on the flange portion f of the chain 42. The two hexagon bolts B are held by the two holding portions 61 of the bolt holder A.

Subsequently, holding the handle 62, the bolt holder A is brought closer to the flange portion f from below, and the hexagon bolt B is inserted into the flange portion f and the bolt hole of the transport member 43. When the bolt holder A approaches the transport member 43, the magnet 64 of the connecting portion 63 magnetically attracts the transport member 43, and the two connecting portions 63 are connected to the transport member 43. As a result, the bolt holder A is attracted to the flange portion f and the lower surface of the transport member 43 in a state where the two hexagon bolts B are prevented from rotating. Even if the operator releases his hand from the handle 62, the hexagon bolt B does not fall out of the flange portion f and the hole of the transport member 43 because the bolt holder A is supported by the transport member 43 by the magnetic force of the magnet 64. .. As shown in FIG. 8, the right unit 51 is located on the right side of the chain 42, and the left unit 52 is located on the left side of the chain 42. In other words, the right unit 51 and the left unit 52 are arranged so as to sandwich the chain 42, and the chain 42 is located in the space S.

Then, a nut is screwed into the threaded portion of the hexagon bolt B from above the transport member 43 to fix the transport member 43 to the flange portion f. Hold the handle 62 and pull the bolt holder A downward to separate it from the transport member 43.

By the above steps, the transport member 43 is attached to the chain 42. By repeating these steps, a plurality of transport members 43 are attached to the chain 42, and the feeder chain F is assembled. The transport member 43 can be removed from the chain 42 by the reverse procedure.

The attachment and detachment of the transport member 43 to the chain 42 using the bolt holder A and the chain holder C described above are performed not only at the time of manufacturing the feeder 6 but also at the time of maintenance of the feeder 6. During maintenance of the feeder 6, the feeder chain F is taken out from the inspection port provided on the top plate of the case 37 of the feeder 6 to perform the work.

[Other embodiments]
[1] In the above embodiment, an example in which the feeder chain F is assembled using the chain holder C outside the feeder 6 has been described. It is also possible to attach / detach the transport member 43 to / from the chain 42 by using the bolt holder A with respect to the feeder chain F attached to the feeder 6, that is, the state inside the case 37. At that time, the bolt holder A is inserted from the inspection port provided on the top plate of the case 37 of the feeder 6 to remove and attach the transport member 43.

[2] In the above embodiment, an example has been described in which the holding portion 61 includes a hexagonal columnar insertion port 61a into which the head of the hexagon bolt B can be inserted. The holding portion 61 may be configured to hold the head of a bolt having another shape. For example, the holding portion 61 may be configured to hold the heads of a hexagon socket head cap screw, a Phillips screw, and a minus screw.

[3] In the above embodiment, an example in which the connecting portion 63 includes a magnet 64 and is connected to the transport member 43 by magnetic force has been described. The connecting portion 63 may be connected to the transport member 43 by another method. For example, the connecting portion 63 may be connected to the transport member 43 by a suction cup or an engaging member such as a hook.

[4] In the above embodiment, the connecting portion 63 projects more than the thickness of the flange portion f with respect to the holding portion 61, and is formed on the step portion D formed by the upper surface of the connecting portion 63 and the upper surface of the holding portion 61. An example in which the flange portion f can be fitted has been described. The positional relationship between the upper surface of the connecting portion 63 and the upper surface of the holding portion 61 is not limited to this, and both may be flush with each other, or the holding portion 61 may protrude with respect to the connecting portion 63.

[5] In the above embodiment, an example has been described in which the right unit 51 and the left unit 52 are provided with one holding portion 61 and one connecting portion 63, respectively. The right unit 51 and the left unit 52 may include two or more holding portions 61 and connecting portions 63. Further, the number of holding portions 61 and connecting portions 63 does not have to be the same.

[6] In the above embodiment, an example has been described in which the bolt holder A includes a right unit 51 and a left unit 52, and the right unit 51 and the left unit 52 are arranged so as to sandwich the chain 42. The bolt holder A may consist of a single unit and may be located on the right or left side of the chain 42.

[7] In the above embodiment, an example in which the feeder chain F includes a pair of chains 42 has been described, but the number of chains 42 may be three or more.

6: Feeder (conveyor)
37: Case 39: Sprocket (driving wheel)
41: Drum (driving wheel)
42: Chain 43: Conveying member 51: Right unit 52: Left unit 53: Support unit 61: Holding part 63: Connecting part 64: Magnet A: Bolt holder (jig)
B: Hexagon bolt (bolt)
D: Step portion f: Flange portion

Claims (4)

A plurality of endless chains wound around a driving wheel body and a driven wheel body in a state parallel to each other, and a state in which the chains are arranged at intervals along the extending direction of the chains and orthogonal to the extending direction of the chains. It has a plurality of transport members spanned over the plurality of chains, and a case for accommodating the plurality of chains and the transport members, and the transport members are provided in each of the chains. A jig for a transport device that is fixed to the flange portion by a plurality of bolts and that transports all the chains of the harvested crops put into the case by the transport member.
Used when attaching and detaching the transport member to the chain,
In each of the transport members, a holding portion that holds the plurality of bolts in a state of being prevented from rotating at the same time, and a holding portion.
A jig including a flange portion and a connecting portion connected to at least one of the transport members. The connecting portion includes a magnet and
The jig according to claim 1, wherein the connecting portion is connected to at least one of the flange portion and the transport member by the magnetic force of the magnet. The holding portion and the connecting portion are provided on the same surface side.
The connecting portion protrudes from the holding portion more than the thickness of the flange portion.
The jig according to claim 1 or 2, wherein the flange portion can be fitted into the step portion formed by the connecting portion and the holding portion. The flange portion is used for a transport device provided on both the left and right sides of the chain.
A right unit and a left unit provided so as to sandwich the chain when the connecting portion is connected to at least one of the flange portion and the transport member.
A support unit that connects and supports the right unit and the left unit is provided.
The jig according to any one of claims 1 to 3, wherein each of the right unit and the left unit includes the holding portion and the connecting portion.

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