JP2011205903A - Spindle-supporting structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spindle-supporting structure of a combine harvester, which is hardly loosened to a case of a bearing.SOLUTION: The combine harvester is obtained by fixing the bearing 36 for freely rotatably supporting the spindle 53B of a rotating wheel body 33 to the sheet metal case 30 having the rotating wheel body and an endless turning chain 34 wound on the rotating wheel body, installed therein. The bearing is held by a cast-metal holder 38, and a fixing part 40 for fixing the holder has a mutually facing pair of cut and raised parts 70 formed by cutting and raising a plate material forming the case to the outside of the case, and an opening part 71 formed at the cut and raised site. The holder is fixed while being fitted in the opening part with a bolt 77 passed through over the holder and the pair of the cut and raised parts.

Description

  In the present invention, a bearing for rotatably supporting a support shaft of the rotating ring body is fixed to a case made of a sheet metal in which the rotating ring body and an endless rotating chain wound around the rotating ring body are housed. The present invention relates to a support structure for a combined combine.

Prior art document information relating to the above-described combiner support structure for the combine cannot be disclosed. For example, in the pulling device for cereals shown in FIG. 12, conventionally, an endless rotating chain 58B for driving and rotating the raising claw, and endless rotation A drive sprocket 54B around which a chain 58B is wound, and an output sprocket 33 as a rotating wheel for transmitting power to the drive sprocket 54B, and an endless rotation for transmission for transmitting power to the output sprocket 33 The chain 34 is housed in a case 52B, 30 made of sheet metal.
Then, the drive sprocket 54B and the output sprocket 33 are fixed to the rotation support shaft 53B, and one of the pair of bearings 36, 37 that rotatably supports the rotation support shaft 53B is supported by the case 30. For this purpose, the outer race 36 a of the bearing 36 is fitted in the through hole 90 formed in the case 30, and the retaining ring 91 prevents the outer race 36 a from coming off.

For this reason, there is a possibility that the fitting between the outer race and the through hole is loosened over a long period of time, and the bearing is rattled against the case.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a combiner support structure for a combine that is less likely to be rattled against the case of the bearing.

A first characteristic configuration of the present invention is a sheet metal case in which a rotating ring body and an endless rotating chain wound around the rotating ring body are housed, and a support shaft of the rotating ring body is rotatably supported. A supporting shaft support structure for a combine in which a bearing to be fixed is fixed,
The bearing is held by a cast holder, a fixing portion for fixing the holder is provided in the case, and the fixing portion is provided by cutting and raising the plate material forming the case toward the outside of the case. The holder has a pair of opposed raised parts, and an opening formed in the cut and raised traces, and the holder is fitted into the opened part, and the holder and the pair of raised parts are It is in the point fixed with the bolt penetrated over.

In this configuration, when the bearing is fixed to the case, a bolt inserted between the holder and the pair of cut and raised portions in a state where the cast holder holding the bearing is fitted in the opening. It is fixed with.
For this reason, the holder is firmly fixed to the case by the fitting between the holder and the opening and the bolt fixing between the holder and the pair of cut and raised portions, and the holder is less likely to rattle against the case.
Therefore, with the combine support structure of the combine having this configuration, the bearing held by the holder is unlikely to rattle.
When fixing the holder to the case, by using a part of the case (a pair of raised parts) that is an existing member, the holder can be easily fixed to the case without requiring a special fixing member. Can do.
Moreover, when providing a pair of cut-and-raised part, since the board | plate material which forms the case is cut and raised toward the case outer side, it is easy to fix a holder with respect to a case from the outer side.

  According to a second characteristic configuration of the present invention, the holder is provided with a flange that is locked to an edge of the opening.

  If it is this structure, it will be easy to position the fixing position with respect to the case in the fitting direction with respect to the opening part of a holder by latching a flange to the edge part of an opening part.

It is a left view which shows the whole combine. It is a top view which shows the whole combine. It is a right view which shows the whole combine. It is a front view which shows the whole combine. It is sectional drawing which shows the principal part back surface of a pre-cutting process part. It is a partial cross section figure which shows the principal part of a pulling apparatus. It is an expanded sectional view which shows the principal part of a pulling apparatus. (A)-(d) shows the principal part of an auxiliary transmission case, (a) is a cross-sectional view, (b) is a rear view, (c) is a side cross-sectional view. (D) is a top view which shows the preparation methods of a cut and raised part. It is a front view which shows the inside of a pulling apparatus. It is a side view which shows the connection part of a raising / lowering cylinder and a transmission case. It is a disassembled perspective view of a descent | fall prevention tool. It is a partial cross section figure explaining a prior art.

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the parts indicated by the same reference numerals as those in the conventional example indicate the same or corresponding parts.
1 to 4 show a combine for performing harvesting work such as rice and wheat according to an embodiment of the present invention.
The combine includes a traveling machine equipped with a pair of left and right crawler traveling devices 1L and 1R, a pre-cutting processing unit 10 connected to the front end of the machine frame 2 of the traveling machine, and a lateral side of the traveling machine on the rear side of the machine frame 2. A threshing device 3 and a grain bag packing unit 4 provided side by side in the direction and a waste straw processing device 7 disposed on the rear end side of the machine body frame 2 are provided.

  The traveling machine body includes an engine 5 provided at a right end portion on the front end side of the body frame 2, and the crawler traveling devices 1 </ b> L and 1 </ b> R are driven by the output of the engine 5 to self-run. The traveling machine body includes a boarding type driving unit 20 equipped with a driving seat 21 provided above the engine 5.

  The pre-processing unit frame 11 of the pre-cutting processing unit 10 is supported by a connecting member 51 which is fixed to the body frame 2 and which is directed to the left and right of the body so as to be swingable up and down around an axis P which is lateral to the traveling body.

  The pre-cutting processing unit 10 has three weeding tools 12L arranged in parallel to the traveling machine body in the front end portion of the pre-cutting processing unit 10 when the pre-processing unit frame 11 is swung by the elevating cylinder 6. , 12C, 12R are moved up and down to a lowered working position where the grass cutters 12L, 12C, 12R are raised from the ground.

  When the pre-cutting processing unit 10 is lowered to the lowering work position and the traveling machine body is caused to travel, the pre-cutting processing unit 10 causes a planted culm and also cuts the chopped culm and starts the threshing feed chain 3a of the threshing device 3. Supply to the department. The threshing device 3 sandwiches the stock side of the harvested cereal meal by the threshing feed chain 3a and conveys it to the rear side of the traveling machine, thereby supplying the tip side of the harvested grain meal to the handling room (not shown). To process.

  The waste straw processing apparatus 7 receives the waste straw transported by the feed chain 3a from the threshing apparatus 3 by the waste straw transport mechanism 7a provided in the upper part thereof and transports it backward. And although illustration is abbreviate | omitted, the long straw discharge state which discharges | emits a waste straw outside a vehicle with the length, and the shredded discharge state which discharges outside after performing the shredding process which shreds a waste straw with a disk cutter In addition, it is configured to be able to switch the waste wall discharge form. The waste straw transporting mechanism 7a and the disc cutter are operated by power from the engine 5.

The pre-cutting processing unit 10 will be described in detail.
As shown in FIGS. 1 to 4, the pre-processing unit frame 11 of the pre-cutting processing unit 10 includes a transmission case 11 a that also serves as a main frame.
By swinging the transmission case 11a with the elevating cylinder 6, the pre-cutting processing unit 10 moves up and down to the lowering work position and the non-working position.

  The transmission case 11a is formed of a square pipe or the like, and an intermediate transmission case 19 along the lateral direction of the traveling machine body is connected to the tip. Three intermediate weeding tool support rods 11b extending in the forward direction of the traveling machine body are attached to the intermediate transmission case 19 at a predetermined interval in the lateral direction of the traveling machine body, and a pair of adjacent weeding tool support rods 11b, One raising path 13 is formed between 11b, and two raising paths 13 and 13 are formed as a whole.

  The pre-cutting processing unit 10 includes the three weeding tools 12L, 12C, and 12R, the pulling devices 8 and 9 provided in the respective raising paths 13 behind the weeding tools 12L, 12C, and 12R, and the pulling device 8 9, a clipper-shaped cutting device 15 provided behind the lower end side, a pair of left and right scraping wheels 16a, 16b and a pair of left and right scraping endless belts 17a, 17b provided on the upper side of the cutting device 15, And a feeding device 18 having a conveying start end positioned above the pair of scraped ring bodies 16a, 16b. And supply to.

  That is, as shown in FIG. 4, the interval W1 between the front and rear ends 12c and 12b of the middle weeding tool 12C located at the center and the outer weeding tool 12R located on the operating unit 20 side is opposite to the operating unit 20 side. The interval W2 between the tips 12a and 12c of the outer weeding tool 12L and the middle weeding tool 12C located on the side is set to an interval in which two rows of planted culm a can be introduced.

  As shown in FIG. 2, when the pre-cutting processing unit 10 performs the work in the middle cutting mode, the planted cereal of two rows is formed by the outer weeding tool 12R and the middle weeding tool 12C on the operation unit 20 side, as shown in FIG. a is introduced into the raising path 13 on the driving unit 20 side, and two planted cereals a are fed to the driving unit 20 side by the outer weeding tool 12L and the middle weeding tool 12C opposite to the driving unit 20 side. Introducing into the raising path 13 on the opposite side, a total of 4 planted cereals are harvested.

  As shown in FIG. 5, an intermediate transmission case 19 is connected to the extended end of the transmission case 11 a via a connection case 14. The intermediate transmission case 19 includes an intermediate transmission shaft 23 for power distribution. A transmission shaft 22 to which power from the engine 5 is transmitted is built in the transmission case 11a. The connection case 14 includes a relay transmission shaft 24 that interlocks with the transmission shaft 22 via a bevel gear, and this relay transmission shaft 24 is interlocked with the intermediate transmission shaft 23 via the bevel gear.

FIG. 9 is a front view showing the inside of the pulling devices 8 and 9. The left and right pulling devices 8 and 9 are configured symmetrically.
The left and right pulling devices 8 and 9 are provided with input shafts 53A and 53B above the pulling cases 52A and 52B made of sheet metal. In each of the pulling cases 52A and 52B, there are driving sprockets 54A and 54B rotating integrally with the input shafts 53A and 53B, tension sprockets 55A and 55B adjacent to the lateral sides of the driving sprockets 54A and 54B, and the pulling cases 52A and 52B. The first guide rollers 56A and 56B and the second guide rollers 57A and 57B arranged at the lower portion, and endless chains 58A and 58B that hang around the first guide rollers 56A and 56B are provided.

  Each endless chain 58A, 58B is provided with a plurality of raising claws 59A, 59B arranged at a constant pitch. Each pulling claw 59A, 59B has a retracted position in which the free ends thereof are located inside the pulling cases 52A, 52B, and an action position that extends outward from the pulling cases 52A, 52B and acts on the planted culm a. Further, it swings with the connecting pins 60A, 60B connecting them to the endless chains 58A, 58B as fulcrums.

  Between the first guide rollers 56A and 56B and the second guide rollers 57A and 57B, first guide rails 61A and 61B for holding the pulling claws 59A and 59B in a downward acting posture are provided. Between the second guide rollers 57A and 57B and the drive sprockets 54A and 54B, second guide rails 62A and 62B for holding the raising claws 59A and 59B in a laterally acting posture are provided.

  The second guide rails 62A and 62B include a lower guide rail 63 that holds the pulling claws 59A and 59B immediately after passing through the second guide rollers 57A and 57B in a lateral action posture, and a pulling claw 59A that has passed through the lower guide rail 63. , 59B are divided into long upper guide rails 64 that hold the laterally acting posture, and bolts are separately fixed to the pulling cases 52A, 52B.

Since the second guide rails 62A and 62B hold the pulling claws 59A and 59B having a large pulling load immediately after the start of pulling in the lower end portions thereof in the lateral action posture, they are worn by contact with the pulling claws 59A and 59B. easy.
In the present embodiment, the second guide rails 62A and 62B are divided into a lower guide rail 63 that is easily worn and an upper guide rail 64 that is relatively hard to be worn, and are respectively bolted to the raising cases 52A and 52B. Therefore, it is easy to replace the lower guide rail 63 that is easily worn as necessary.

  As shown in FIG. 5, the intermediate transmission case 19 includes a right transmission shaft 25 that transmits power to the input shaft 53B of the right pulling device 9 located on the operating unit 20 side, a pair of left and right scraping wheels 16a and 16b, and left and right A cylindrical shaft 26 that transmits power to the pair of scraping endless belts 17a and 17b is provided. Further, a left pulling transmission case 28 is connected, which includes a left transmission shaft 27 that transmits power to the input shaft 53A of the left pulling device 8 located on the side opposite to the operation unit 20 side.

  As shown in FIG. 6, the auxiliary transmission case 30 made of sheet metal is provided with a chain transmission mechanism 29 for transmitting power from the right transmission shaft 25 to the input shaft 53 </ b> B on the back side of the pulling case 52 </ b> B of the right pulling device 9. Is fixed.

The chain transmission mechanism 29 wraps an endless rotating chain 34 over an input sprocket 32 fixed to the input transmission shaft 31 and an output sprocket 33 as a rotating ring body fixed to the input shaft 53B concentrically. is there. The right transmission shaft 25 is interlocked with the input transmission shaft 31 via a bevel gear, and the power is transmitted to the input shaft 53B by the drive rotation of the right transmission shaft 25.
The rotational driving force of the right transmission shaft 25 is transmitted to the cylindrical shaft 26 via the speed reduction mechanism 35. By the driving rotation of the cylindrical shaft 26, the pair of left and right scraping wheels 16a and 16b and the pair of left and right scraping endless belts 17a. , 17b are driven.

An input shaft 53B that is a support shaft of the output sprocket 33 is rotatably supported by a first bearing 36 fixed to the auxiliary transmission case 30 and a second bearing 37 fixed to the back side of the pulling case 52B. .
The first bearing 36 is held by a cast first holder 38 that is bolted to the fixing portion 40 of the auxiliary transmission case 30, and the second bearing 37 is a cast second holder that is bolted to the pulling case 52B. 39.

As shown in FIG. 8, the fixing portion 40 for fixing the first holder 38 to the auxiliary transmission case 30 is formed by cutting and raising the plate material forming the auxiliary transmission case 30 toward the outer side of the case. And a pair of cut-and-raised portions 70 and an opening 71 formed in the cut-and-raised traces.
Bolt holes 74 are formed in each of the cut-and-raised portions 70, and nuts 75 are welded and fixed to the outer surface side of one cut-and-raised portion 70 so as to surround the bolt holes 74 concentrically.

As shown in FIGS. 7 and 8A to 8C, the first holder 38 is formed in a shape having a circular outer peripheral portion as viewed in the axial direction of the input shaft 53B, and the opening 71 A flange 72 that is locked to the edge portion is provided, and a boss 76 that forms a bolt insertion hole 73 along a direction orthogonal to the axial direction of the input shaft 53B is formed.
On both the left and right sides of the boss 76, vertical contact support surfaces 76 </ b> A that contact and support the left and right cut and raised portions 70 are formed.

  The first holder 38 is positioned between the pair of cut-and-raised portions 70 with the flange 72 fitted into the opening 71 such that the flange 72 is locked to the edge of the opening 71. The auxiliary transmission case 30 is fixed with bolts 77 inserted from the side across the boss 76 and the pair of cut and raised portions 70.

  The bearing that rotatably supports the input shaft 53A of the left pulling device 8 is also held by a cast holder similar to the first holder 38 that holds the first bearing 36, and a fixing portion that fixes the holder is provided in the first portion. The pulling case 52 </ b> A may be provided by the same structure as the fixing portion 40 of the one holder 38.

FIG. 10 is a side view showing a connecting portion between the elevating cylinder 6 and the transmission case 11a.
A bracket 78 having a U-shaped cross-section is welded and fixed to the transmission case 11a, and the piston of the lifting cylinder 6 is connected by a connecting pin 79 inserted through the bracket 78 so that the lifting cylinder 6 and the transmission case 11a are connected to each other. Are coupled so as to be relatively swingable.

  This connection portion is provided with a lowering prevention tool 80 for preventing the lowering of the pre-cutting processing unit 10 from being lowered when the pre-cutting processing unit 10 is held at the non-lifting non-working position and maintenance work is performed. It is.

As shown in FIG. 11, the lowering prevention tool 80 has a U-shaped member 81 having a U-shaped cross-sectional shape in which the piston of the elevating cylinder 6 can enter inside, and both the outer sides of the U-shaped member 81. And a pair of plate-like arm members 82 fixed by welding.
Each of the pair of arm members 82 is supported on the bracket 78 by a connecting pin 79 so as to be swingable up and down, and has a bolt insertion hole 84 for a fixing bolt 83 for fixing the lowering prevention tool 80 to the bracket 78.

  When the pre-cutting processing unit 10 is lowered to the lowering work position, as shown in FIG. 10A, the U-shaped member 81 is swung upward, and the bolt insertion hole 84 and the bracket 78 are swung. The lowering prevention tool 80 is fixed to the bracket 78 by the fixing bolt 83 inserted through the bolt insertion hole 85 formed in the above and is held in the blocking release state.

  When holding the pre-cutting processing unit 10 in the raised non-working position, the lowering prevention tool 80 is removed from the bracket 78, and the piston is inserted inside the U-shaped member 81 as shown in FIG. The U-shaped member 81 is brought into contact with the end of the cylinder case 86 to switch to a blocking state that prevents the pre-cutting processing unit 10 from being lowered.

  When switching to the blocking state, the fixing bolt 83 that has fixed the lowering prevention tool 80 to the bracket 78 is reattached to the bolt insertion hole 85 of the bracket 78, so that the lowering prevention tool 80 swings to the blocking release side. Even if trying to do so, the contact between the arm member 82 and the fixing bolt 83 can prevent the lowering prevention tool 80 from swinging, and the fixing bolt 83 is less likely to be lost.

[Another embodiment]
(1) In the above embodiment, the auxiliary transmission case 30 has the structure in which the input shaft 53B of the endless rotating chain 34 is supported by the first holder 38 and the cut-and-raised portion 70. However, the raising case 52A as a case, You may employ | adopt the structure supported by 52B with the same structure.
(2) In the above embodiment, an example in which the pair of cut-and-raised portions 70 facing the auxiliary transmission case 30 in the left-right direction is shown, but the pair of cut-and-raised portions 70 facing the auxiliary transmission case 30 in the vertical direction is shown. You may form, and you may form a pair of cut-and-raised part 70 which opposes in a diagonal diagonal position.
(3) In the above embodiment, the structure in which the input shaft 53B of the endless rotating chain 34 is supported by the auxiliary transmission case 30 and the cut-and-raised portion 70 is shown as an example. However, the drive sprockets 54A and 54B as rotating wheel bodies, A configuration in which the first guide rollers 56A and 56B, the second guide rollers 57A and 57B, the input sprocket 32, and the like are supported by the auxiliary transmission case 30 or the raising cases 52A and 52B may be employed.

  The present invention provides a sheet metal case in which a transmission mechanism for transmitting power to a waste wall treatment apparatus includes a rotating ring body and an endless rotating chain wound around the rotating ring body, and the transmission mechanism is internally provided. In addition, the present invention can also be used in a combine support structure for a combine in which a bearing that rotatably supports a support shaft of a rotating ring body is fixed.

30 Case 33 Rotating wheel 34 Endless rotating chain 36 Bearing 38 Holder 40 Fixing portion 53B Support shaft 70 Cut-and-raising portion 71 Opening portion 72 Flange 77 Bolt

Claims (2)

A combined support in which a bearing that rotatably supports a support shaft of the rotating ring body is fixed to a case made of sheet metal that includes a rotating ring body and an endless rotating chain wound around the rotating ring body. A shaft support structure,
The bearing is held by a cast holder,
A fixing portion for fixing the holder is provided in the case,
The fixing portion has a pair of cut and raised portions facing each other provided by cutting and raising the plate material forming the case toward the outside of the case, and an opening formed in the cut and raised marks,
The combiner support structure for the combine, in which the holder is fixed by a bolt inserted through the holder and the pair of cut-and-raised portions in a state of being fitted into the opening.   The combiner support structure for a combine according to claim 1, wherein the holder is provided with a flange that is engaged with an edge of the opening.

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