JP2021171011A - Lifting conveyor for thresher - Google Patents

Abstract

To provide a lifting conveyor for thresher, capable of avoiding trouble following to adhesion of admixture in tailings, efficiently scooping up and lifting the tailings, and capable of being used for long term.SOLUTION: A support bracket 35 of a lifting body 25 fitted to a conveyor chain 24 has a notch part which is cut into a recess state, from a lower end, the notch part being formed on a lateral center position of a fitting piece part 35a, and the notch part 35c is provided to face a roller interval hole 33r formed between vertical rollers 33c, and a fitting recess part 37a which is cut into a recess state from a base end part, is formed on a lateral center position of a lifting plate 37 which is fitted and supported to the support bracket 35, and the fitting recess part 37a is inserted into a chain body 33.SELECTED DRAWING: Figure 7

Description

The present invention relates to a unloading conveyor of a threshing device that unloads a second product in a state in which impurities such as straw waste are mixed in grains.

Conventionally, a feeder house, which is a transport conveyor, is used as a processed material (hereinafter simply referred to as a second product) in which grains such as straw scraps and stems are mixed with grains by cutting the grain culms to be planted in the field. A combine that is lifted and transported (lifted) to the processing process of the next-order threshing section or the like is already known. (For example, Patent Document 1)
As shown in FIGS. 1 and 6 of Patent Document 1, the conveyor (conveyor chain) 1 installed in the feeder house A of the combine is a pair of left and right drive sprockets 5 axially supported on the upper portion in the feeder house main body 11. And a pair of roller chains (chain body) 6 that are hung between the front rotating drums (a pair of left and right driven sprockets) 3 that are pivotally supported at the lower front part, and a transport piece (lifting body). The long slats 8 are erected between the roller chains 6 and 6.
The roller chain 6 forms a mounting portion 63 for attaching the slat 8 to a part of the link 61, and the drive sprocket 5 is engaged with the space portion (roller spacing hole) 64 formed between the rollers 62 to drive the rotation. As a result, the second product is picked up and lifted through each slat 8.
Then, in the mounting piece 81 of the slats 8 to be mounted on the mounting portion 63 of the roller chain 6, a loophole 84 is formed at a position facing the space portion 64, and as a result, the grain culm or stem that has entered the space portion 64 is formed. Chips and the like (contaminants) are forcibly pushed out by the pushing action of each tooth of the sprocket 5 that meshes with each other.

Japanese Unexamined Patent Publication No. 10-28452

In the feeder house A (hereinafter, simply referred to as a lifting conveyor) shown in Patent Document 1, the cut straw or the like that has entered the space 64 of the roller chain 6 is caught in the space 64 of the drive sprocket 5. Since it is forcibly pushed out from the loophole 84 and discharged, there is an advantage that the roller chain 6 can be smoothly driven by the drive sprocket 5, but it has entered the loophole 84 formed in the transport piece 81 of the slat 8. There is a drawback that impurities are carried around and moved.
That is, the lifting conveyor has a structure in which a loophole 84 of the slat 8 facing the space 64 of the roller chain 6 is formed as a square punch hole with respect to the mounting piece 81, so that the sprocket 8 is a feeder house. When transporting a second object (conveyed object) while sandwiching it with the bottom wall of the main body 11, long contaminants that enter the punch hole are caught in the hole edge on the downstream side in the transport direction of the square hole, so they are driven. What is not pushed out when the sprocket 5 is bitten is carried around as it is, and as a result, a large transport resistance is generated, which causes a problem that smooth lifting is hindered.
On the other hand, if a type of unloading conveyor having such a loophole is to be adopted as a second conveyor device for transporting the second product of the threshing section and performing a second reduction process in the sorting chamber, for example, the second in this case. Since the number conveyor device is constructed by standing approximately vertically along the machine wall of the threshing section, a large number of second items sent from the second spiral body are projected onto the roller chain (chain body). Straw debris that gets into the square loopholes and roller spacing holes when scooping up with the conveyor belt (slat) is difficult to remove, especially when threshing wet grains with rainwater. There are problems such as clogging in this part and the tendency for transfer troubles to occur between the chain guide plate that guides the rollers to the inside of the chain body, which complicates the maintenance work to solve this problem. Occurs.

The present invention for solving the above problems firstly describes a drive sprocket 23 pivotally supported by a unloading main body case 13 in a second conveyor device 11 which is a unloading conveyor erected in the grain removal device 6. The chain main body 33, which is wound around the driven sprocket 23a and has a chain roller 33c and is lifted and moved along the chain guide 32, and a mounting portion projecting from the link of the chain main body 33 with a transport interval H. In the unloading conveyor of the grain removal device, which installs the conveyor chain 24 composed of the unloading body 25 and the like for the second scooping transport attached to 33e.
A support bracket 35 having a vertical mounting piece 35a and a horizontal support piece 35b for detachably mounting the lifting body 25 to the mounting portion 33e by being bent in an L shape in a side view, and the support bracket. The base side is attached to the support piece portion 35b of the 35, and the tip side is supported in a protruding state as a free end having an elastic force, and is composed of a horizontal view-shaped lifting plate 37 on which the second object is placed. A notch portion recessed from the lower end is formed at the left and right center position of the mounting piece portion 35a of the support bracket 35, and the notch portion 35c faces the roller spacing hole 33r formed between the upper and lower rollers 33c. Along with the provision, a fitting recess 37a that is recessed from the base end portion is formed at the center position on the left and right of the lifting plate 37, and the fitting recess 37a is provided in a state of being inserted into the chain body 33. There is.
Secondly, the support bracket 35 has a punching hole 35e at the center position of the support piece portion 35b to make the midway portion of the lifting plate 37 unsupported, and supports the lifting plate 37. There is.

According to the invention of claim 1, the chain is wound around a drive sprocket and a driven sprocket pivotally supported by the unloading main body case in a second conveyor device which is a unloading conveyor installed in the grain removal device. A conveyor chain consisting of a chain body that is stretched along the guide and a lifting body for scooping and transporting the second item that is attached to the mounting part that is projected at the link of the chain body with a transport interval is installed. A support bracket obtained by bending the unloading body into an L-shape in a side view and having a vertical mounting piece portion and a horizontal support piece portion, and a support bracket of the sprocket removal device. The left and right center positions of the mounting piece of the support bracket are formed by a plan-viewing rectangular lifting plate in which the base side is attached to the support piece and the tip side is supported in a protruding shape as a free end having elastic force. In By forming a fitting recess that is recessed from the sprocket and providing the fitting recess in a state of being inserted into the chain body, the fitting recess is provided.
In each lifting body, the lifting plate receives the second object on the chain side lifting pieces located on both outer sides of the chain body via the fitting recesses, and is lifted downward from this part. Grains and debris that are about to leak out are guided toward the chain guide side, and are placed on the lifting plate to encourage them to fall from the end of the chain side lifting piece to the chain guide side. It is possible to enable smooth lifting while avoiding that the second item inside leaks out and comes into direct contact with the chain body.
In addition, the second product that is received by the lifting plate and moves to the chain body side passes through the roller spacing hole directly above the lifting plate through the fitting recess, passes through the guide gap formed between the chain guide, and leaks. Since leakage is allowed as an object, it is possible to smoothly carry out the lifting while suppressing the clogging of the second object into the roller spacing hole.
The notch formed at the left and right center position of the mounting piece of the support bracket is provided so as to face the roller spacing hole formed between the upper and lower chain rollers, and is therefore pushed out from the roller spacing hole by the sprocket teeth. Debris can be smoothly discharged from the notch without being caught on the mounting piece.
According to the second aspect of the present invention, the support bracket has a punching hole at the center position of the support piece portion to make the middle part of the lifting plate unsupported, and supports the lifting plate.
The lifting body is in a state where the base side of the lifting plate is attached and supported on the base side of the support piece, and the middle part is supported while the tip side and the left and right sides of the lifting plate, which is the free end side, are contactably supported. In order to make it unsupported, when scooping up the second item from the bottom of the conveyor chain, the large scooping load received by the lifting plate is elastically dented in the middle part of the lifting plate facing the hole to buffer it. Therefore, it is possible to smoothly drive the chain while efficiently scooping up the second object.

It is an overall plan view which shows the general-purpose combine which includes the lifting conveyor to which this invention is applied. It is a left side view which shows the main part structure of a threshing apparatus. It is a right side view which shows the internal structure of the 2nd conveyor apparatus shown in FIG. It is a front view (right side surface) view which shows the main part of FIG. 2 in an enlarged manner. It is a left side view which shows the structure of the main part of FIG. It is a top view which shows the structure of the transport body of FIG. 5, a chain main body, and a chain guide. (A) is a perspective view of the lifting body, and (b) is an exploded perspective view showing the configuration of the lifting body and the chain body. It is a front view (right side surface) view which shows the other embodiment of a transport body.

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall plan view of a general-purpose combine equipped with a threshing device to which the present invention is applied, and FIG. 2 is a right side view showing a cross-sectional view of a main structure of the threshing device from which the grain tank of FIG. 1 is removed. be. The combine A supports the traveling machine 2 supported by the pair of left and right crawler-type traveling devices 1 which is the traveling unit, and the cutting unit 3 which performs the cutting work of the planted culm at the front portion so as to be able to move up and down. A control unit 4 that performs a maneuvering operation on the rear right side of the unit 3, and a grain tank 5 is arranged behind the control unit 4, and a threshing device that performs a threshing operation on the grain culm cut by the cutting unit 3 on the left side of both. 6 and a straw waste processing unit 7 and the like for processing and discharging straw debris and the like from the rear end side of the threshing device 6 are arranged.

The cutting unit 3 rearwardly conveys the cut grain culm by the feeder 8 and supplies the cut grain culm into the grain culm supply port 6a of the threshing device 6. In the process of threshing the harvested culm, the threshing device 6 transports and supplies the first product to the grain tank 5 via the first conveyor device 10 and the second product via the second conveyor device 11. After threshing, the threshed culms are shredded by the straw processing unit 7 and discharged to the ground surface behind the machine.

The first conveyor device 10 and the second conveyor device 11 are a unloading conveyor that stands parallel to the right side machine wall 6b side of the grain removal device 6 in the front-rear direction, and includes the grain removal device 6 and the grain tank 5. In the space formed between them, they are mounted on the right side machine wall of the grain removal device 6 and erected, and both conveyor devices 10 and 11 have long plan views of the respective lifting main body cases 13 and 13 in the front-rear direction. It has a square cross section, and a lid structure is provided on the right side wall (front wall of the case) of the case to facilitate maintenance work such as inspection and cleaning inside the case.

The grain tank 5 is the first grain accommodated through a grain discharge auger 12 composed of a vertical auger cylinder 12a, a relay cylinder 12b, and a discharge auger cylinder 12c whose discharge posture can be changed, which are erected at the rear of the tank. Is discharged and supplied to the transport vehicle waiting in the field. With the vertical auger cylinder 12a erected on the traveling machine body 2 as a fulcrum, the grain tank 5 is released from the combine working posture shown in FIG. 1 and the support posture switching mechanism by a known support posture switching mechanism, and is indicated by an arrow. It is configured to be freely switchable to a maintenance work posture that turns right in the direction and forms a wide work space to the right of the threshing device 6 behind the control unit 4.

As a result, the combine A is opened in a state where the grain tank 5 is rotated to the right with the vertical auger cylinder 12a as a fulcrum to be in the maintenance work posture when the normal maintenance work is performed at the start or end of the work or in the middle of the work. It facilitates maintenance work such as inspection and repair of the first conveyor device 10 and second conveyor device 11 and various transmission mechanisms arranged on the right side of the threshing device 6 through the work space provided, as well as cleaning. There is.

Next, the outline of the threshing device 6, the first conveyor device 10 and the second conveyor device 11 will be described with reference to FIGS. 1 to 3. First, as shown in FIG. 2, the threshing device 6 is the first threshing unit 15 that performs the threshing work of the harvested culm supplied from the culm supply port 6a, and the threshing unit that has been threshed by the threshing unit 15. It is composed of a grain which is a grain, a second product which is a processed product in which grains and scraps (contaminants) are mixed, and a sorting unit 16 which sorts into dust such as straw scrap which has been sorted. There is.
The threshing section 15 has a cylindrical handling cylinder 17 provided so as to be rotatable around the handling cylinder rotating shaft 17a in the front-rear direction in the handling chamber 15a, and an arc shape along the lower side of the handling cylinder 17. It consists of a receiving net 18 and the like.

The threshing unit 15 is threshed by the plate-shaped handle teeth 17b in which the handling cylinder 17 that rotates the grain culm is erected spirally in the handling chamber 15a, and is handled and removed by the receiving net 18 for threshing processing. That is, the whole cut grain culm cut by the cutting section 3 is thrown into the handling chamber 15a for threshing, and the threshed threshing passes through the receiving net 18 and falls to the lower sorting section 16. ..
The sorting unit 16 includes a swinging sorting body 20 that swings and sorts threshing that has passed through the receiving net 18, a wall insert fan 21 that blows sorting air, and a second sorting unit that discharges dust after sorting to the outside of the machine. It is provided with a sorting fan 21a, a first racen 22 as a racen body for collecting and transporting the sorted first item, and a second spiralen 22a as a racen body for collecting and transporting the sorted second item. ..

As a result, the threshing that has fallen from the receiving net 18 is dropped on the chaff sheave of the rocking sorter 20, and is further leaked downward while being sorted by the chaff sheave. Then, the threshing leaked from the rocking sorter 20 is sorted into the first grain by the sorting wind by the wall insert fan 21, and the second and dust are discharged by the sorting wind by the second sorting fan 21a. It can be sorted into things.
The first spiral 22 is horizontally installed behind the wall insert fan 21 in the left-right direction, and the first sorted item is transported to the right side of the threshing device 6, and the second spiral 22a is left and right behind the second sorting fan 21a. It is laid horizontally in the direction, and the sorted second product is transported to the right side of the threshing device 6.

Further, on the right side of the threshing device 6, the first conveyor device 10 that conveys the first item conveyed by the first spiral 22 to the grain tank 5 and the second item conveyed by the second spiral 22a are handled in the handling chamber 15a. Alternatively, a second conveyor device 11 for reducing and transporting to the sorting unit 16 is installed.
As shown in FIG. 2, the first conveyor device 10 and the second conveyor device 11 as the unloading conveyor are different from each other except that the shapes of the unloading body 25a and the unloading body 25 are partially different. Since the basic configuration of the above is the same, the specific structure of the lifting conveyor will be described later with the same reference numerals mainly for the second conveyor device 11.

First, the first conveyor device 10 scoops up the first object and conveys it upward to a conveyor chain 24 that is wound around the drive sprocket 23 and the driven sprocket 23a that are pivotally supported at the lower and upper parts in the lifting main body case 13. A conveyor 26 having a bucket-type lifting piece 25a is installed.
As a result, the first thing laterally fed by the first spiral 22 is scooped up by the bucket-type lifting piece 25a of the conveyor 26 on the lower end side of the lifting main body case 13, and the grain is conveyed from the upper side of the case to the front side. It is discharged through the spiral portion and discharged and supplied to the grain tank 5.

On the other hand, as shown in FIGS. It is composed of a forward reduction transport spiral portion 11a that transports the number to the front and reduces it to the handling chamber 15a or the sorting unit 16.
Then, in the lifting main body case 13 of the lifting main body case 13, a conveyor chain 24 is wound around the drive sprocket 23 provided on the spiral shaft 22b pivotally supported at the lower portion and the driven sprocket 23a pivotally supported at the upper portion. The conveyor 26 provided with the flat lifting piece 25 according to the present invention, which receives the second object and transports it upward, is housed in a configuration described later.

As a result, the second object transported to the terminal side of the second spiral 22a is scooped up by each of the lifting pieces 25 of the conveyor 26 on the lower side of the lifting main body case 13, and is forward from the upper side of the lifting main body case 13. The front reduction transport on the side is discharged to the spiral portion 11a side and is reduced and supplied to the threshing device 6.
As shown in FIG. 2, the forward reduction transport spiral portion 11a is arranged inside (left side) in the left-right direction from the first conveyor device 10 and extends to the front side of the first conveyor device 10, and is lifted. The number is taken over and conveyed forward, and is discharged and supplied to the handling chamber 15a or the sorting unit 16 via the discharge port 11b.

When the second product, which is transported and supplied from the forward reduction transport spiral portion 11a into the handling chamber 15a and reduced, is a relatively large grain-shaped processed product such as soybean, a route switching mechanism (not shown) is omitted. Through the switching operation, the second product is transported and supplied into the sorting unit 16 from the second product reduction port opened in the middle portion of the forward reduction transport spiral portion 11a to perform the reduction treatment.

The threshing device 6 configured as described above threshs the harvested grain culm in the handling chamber 15a, filters the grains from the receiving net 18, and removes a relatively large processed product such as straw remaining on the receiving net 18. It is transferred to the rear end side of the handling chamber 15a by the transfer action of the spiral plate-shaped culm 17b, dropped from the rear end of the receiving net 18 to the discharging portion 7, and discharged to the outside of the machine. Further, the sorting unit 16 sorts the processed products of grains and straw debris falling from the receiving net 18 and the second product which is reduced and supplied through the switching operation of the path switching mechanism by the swing sorting body 20.

Next, the first item such as the sorted grains sorted by the sorting unit 16 is stored in the grain tank 5 via the first conveyor device 10, and the second item containing grain straw waste and the like is the second conveyor. The dust is reduced by the handling chamber 2 or the sorting unit 16 via the device 11, and the dust is discharged from the rear end side to the outside of the machine by the sorting wind. Further, in the above-mentioned threshing operation, when the second conveyor device 11 is clogged with the second item, the operator detects the clogged state through a notification means such as a clog sensor (not shown) and stops the engine. We are trying to prevent the occurrence of larger clogging troubles.
Further, if necessary, the operator can quickly perform maintenance work on the first conveyor device 10 and the second conveyor device 11 in a state where the grain tank 5 is switched to the maintenance work posture.

Next, the structure of the unloading main body case 13 of the first conveyor device 10 and the second conveyor device 11 as the unloading conveyor will be described with reference to FIGS. 1 to 3. First, the first conveyor device 10 and the second conveyor device 11 share the same basic installation structure such as the cross-sectional shape and lid structure of each other's lifting main body case 13 and the chain main body 33 to be described later. We are trying to combine parts.
The difference between the two in this embodiment is that the length of the unloading main body case 13 of the first conveyor device 10 is shorter than that of the unloading main body case 13 of the second conveyor device 11, and the upper lids provided at the upper ends of the two are provided. The size and shape are different.

That is, the lifting main body case 13 of the second conveyor device 11 is formed by bending a single iron plate of the frame case 13a as a main body structure erected in the vertical direction and processing it into a U shape in a plan view. The left side wall (back wall), the front side wall (standing wall), and the rear side wall (standing wall) are integrally formed, and the free ends of the front side wall and the rear side wall are extended to form the side wall mounting end side 13b. The right opening (front opening) is long in the vertical direction.
Then, in the frame case 13a having a U-shaped cross section, a strip-shaped chain guide 32 is erected from the side wall along the lifting path 13y, so that the conveyor chain 24 can be moved inward to the lifting path 13y. Among the objects to be transported, such as the second object, which is scooped up by the lifting body 25 and carried up by the lifting body 25, which regulates and guides large deflection fluctuations, the one that spills from the lifting body 25 leaks into the chain lowering path side. I try to prevent it from happening.

As a result, the unloading main body case 13 of each unloading conveyor can remove the front lower wall 13c and the front upper wall 13d from the frame case 13a as desired even when the object to be transported is clogged in the case. It is easy to remove and clean the clogging with a long range open in the direction, and it is also easy to perform cleaning by inserting the hose nozzle inside the case.
Further, since the lower opening lid 14 is formed on the front lower wall 13c, it is convenient to perform daily visual inspection of the conveyor 26, sprocket 23, etc., and normal maintenance work such as lubrication work or simple cleaning. You can have it.

Next, the specific structure of the lifting body 25 and the conveyor chain 24 according to the present invention will be described with reference to FIGS. 4 to 7. First, the chain body 33 of the conveyor chain 24 in the illustrated example has an endless band shape in which the inner link 33a and the outer link 33b, which are paired on the left and right as long plate-shaped links, are connected by a pin 33d into which each roller 33c is inserted. It is a general-purpose chain. Then, a mounting portion 33e for mounting the lifting body is projected outward from the left and right outer links 33b and 33b defined with a predetermined transport interval (mounting interval) H, and the mounting portion 33e is provided. A nut 33h for screwing a mounting bolt 33g is fixedly installed in a mounting hole 33f formed in the 33e. The chain body 33 is rotationally driven by engaging the sprocket teeth of the drive sprocket 23 with the roller spacing holes 33r formed between the adjacent rollers 33c and 33c.

The lifting body 25 has a support bracket 35 that is mounted and fixed to the left and right mounting portions 33e by mounting bolts 33g, and a lifting plate that is mounted and supported on the support bracket 35 via a fixing seat 36, bolts 36a, nuts 36b, and the like. It consists of 37 mag. As shown in FIGS. 6 and 7, the support bracket 35 has a support width that preferably supports the lifting plate 37 with respect to the left and right width of the lifting path 13y, and is bent in an L-shape in a side view. A vertical mounting piece 35a and a horizontal support piece 35b are formed.
The mounting piece 35a is formed by recessing a notch 35c for removing dust cut out from the lower end at the center position on the left and right, and bolt holes 35d are bored on both sides of the notch 35c.
The support piece portion 35b has a large opening in the center position of the punch hole 35e capable of making the lifting plate 37 unsupported, and bolt holes 35f are formed near the bases on both sides of the punch hole 35e. ing.

Next, the lifting plate 37 will be described with reference to FIGS. 6 and 7. The lifting plate 37 is made of rubber or synthetic resin and is manufactured as a flat plate having a flexible and elastic force in a plan view shape, and elastically applies a load when scooping up a second object in the lifting path 13y. It is provided with a size and thickness to efficiently receive and transport the scooped second product while buffering it.
Then, in the lifting plate 37, a fitting recess 37a that allows the chain body 33 to be inserted is notched in the central portion on the mounting base side in a size and shape having the left and right width of the chain and the front and rear width of the link, and the fitting recess 37a is formed. A chain side lifting plate 37b having a narrow tongue piece shape is formed on the left and right sides of the chain, and a bolt hole 37c matching the bolt hole 35d is formed in the vicinity of the base of the chain side lifting plate 37b. ing.

As a result, the lifting body 25 can be brought into a unit state in which the lifting plate 37 is previously assembled to the support bracket 35 in the parts assembly process, and can be sequentially and efficiently attached to each attachment portion 33e of the conveyor chain 24. ..
That is, the lifting plate 37 is placed on the support piece portion 35b of the support bracket 35, and the bolts 36a inserted into the fixed seat 36 are passed through the bolt holes 37c and 35d to be positioned downward. It can be fastened with a nut 36b and assembled integrally. Each of the pumping bodies 25 unitized in this manner positions the left and right links of the chain body 33 in the inserted state in the fitting recess 37a, and then contacts the mounting piece portion 35a of the support bracket 35 to the mounting portion 33e. In this state, the mounting bolt 33g can be inserted into the bolt hole 35d and the nut 33h and fastened.

Each of the lifting bodies 25 assembled according to the above configuration has the left and right chain side lifting plates 37b in a state where the bent portion of the support bracket 35 is substantially the same height as the roller 33c located directly above the mounting portion 33e. The left and right inner links 33a can be brought close to the chain guide 32 without creating a large gap. Further, the support bracket 35 has its bent portion facing substantially the same height as the roller 33c so that the roller spacing hole 33r directly above the roller 33c faces above the lifting plate 37 and the roller spacing directly below the roller 33c. The hole 33r can be made to face the notch 35c.

Therefore, a large number of lifting bodies 25 can be manufactured with a simple and inexpensive unit structure, and can be easily assembled to a predetermined mounting portion 33e of the chain body 33 without impairing mounting accuracy. The assembly work of the body 25 can be performed efficiently and at low cost.
When parts need to be repaired or replaced due to wear of the lifting plate 37 or deformation of the support bracket 35 due to long-term use, as shown in FIG. In the open state with the-removed, the target lifting body 25 can be removed by loosening the two bolts 33 g, and the reassembly can be easily and efficiently performed by the reverse operation of the assembly.

As described above, the second conveyor device 11 as a lifting conveyor forms a notch 35c recessed from the lower end at the left and right center positions of the support piece 35b of the support bracket 35, and moves the notch 35c up and down. In addition to being provided so as to face the roller spacing holes 33r formed between the chain rollers 33h, a fitting recess 37a recessed from the base end is formed at the left and right centers of the lifting plate 37, and the fitting recess 37a is formed. By inserting the recess 37a into the chain body 33 and mounting it, the transport body 25 of the conveyor chain 24 is on the drive sprocket 23 side when the second object is scooped up and transported at the lower part of the transport body case 13. Since the lifting plate 37, which rotates while protruding in the radial direction from, scoops up the second item accumulated in the lower part of the case in sequence, the second item in this part is scooped up without clogging, and each lifting is in a horizontal posture from here. The feeder 25 can place the second product on the lifting plate 37 and sequentially move up in the lifting path 13c to continuously lift the second product.

At this time, for example, when a large amount of the second product is fed or when it is wet, the lifting body 25 receives a large load due to a large scooping resistance at the time of scooping, but the tip side has an elastic force as a free end. As shown by the chain double-dashed line in FIG. 4, the lifting plate 37 supported in the protruding state has a receding angle and elastically bends, and the second object is released by this amount to reduce the scooping resistance. It is possible to prevent clogging on the lower side of the transmission path 13c.
Further, in the lifting path 13c, for example, when the second object leaking from the upper lifting plate 37 is received by the lifting plate 37 of the lower lifting body 25 and excessively deposited occurs. Since the lifting plate 37 has a receding angle and elastically bends to allow and promote the fall of the second object from a large gap generated between the second object and the inner wall of the case, the second object to be transported and the inner wall of the case In order to reduce the contact resistance and the lifting load, it is possible to prevent clogging in the middle part of the lifting path 13c.

Then, in the middle of the lifting path 13c, each lifting plate 37 is lifted by the chain side lifting piece 37b located outside the link of the chain main body 33 via the fitting recess 37a to efficiently receive the second object. At the same time as feeding, the grains and debris (hereinafter simply referred to as leaked matter) that are about to leak downward from this part are guided toward the chain guide 32 side, and the end of the chain side lifting piece 37b. In order to promote the fall from the chain guide gap formed between the chain guide 32 and the chain guide 32, the second object being lifted on the lifting plate 37 leaks out and directly contacts the chain body 33. It is possible to enable smooth lifting while avoiding contact.
The end of the chain side lifting piece 37b may be formed so as to protrude at the outer peripheral position of the roller 33c protruding from the chain link, as in the lifting plate 37 shown in FIG. It is possible to remove the deposits by the lifting that regulates the fall of the second object by making the gap between the two smaller and the scraper action on the chain guide 32.

On the other hand, similarly, the second object, which is similarly received by the lifting plate 37 in a heap shape and moves to the chain main body 33 side, has a roller spacing hole 33r directly above the lifting plate 37 as shown by a two-dot chain line in FIG. Since it passes through the guide gap formed between the chain guide 32 and the chain guide 32 and is allowed to leak as a leak, it is possible to suppress clogging of the second object in the roller spacing hole 33r.
At this time, debris such as cut straw that passes through the roller spacing hole 33r together with the grains is promoted to move to the guide gap side by the roller 33c that rotates by contact with the chain guide 32. The moving debris is smoothly discharged from the roller spacing hole 33r directly below the roller 33c and the notch 35c opened opposite to each other, and the debris is caused by the leaked material coming into contact with the chain guide 32 side. It avoids troubles associated with adhesion, and as a whole, creates features such as each lifting body 25 efficiently and stably receiving the second item and smoothly lifting it.

As described above, the conveyor chain 24 that lifts the second product drives the adhering matter such as cut straw adhering to each roller spacing hole 33r of the chain body 33 when the driving sprocket 5 or the driven sprocket 23a is bitten into each sprocket. It can be pushed out by the teeth to prevent adhesion as a whole, but even when the sprocket wet with rainwater is threshed, the chain drive that suppresses clogging can be smoothly performed.
That is, the conveyor chain 24 of the embodiment has a notch 35c formed in a recessed shape from the lower end at the left and right center positions of the mounting piece 35a of the support bracket 35 as described above with respect to the mounting portion 33e of the chain body 33. Since it is provided so as to face the roller spacing hole 33r formed between the upper and lower chain rollers 33h, the debris extruded from the roller spacing hole 33r does not get caught in the mounting piece 35a and smoothly from the notch 35c. It is discharged.

Further, the support bracket 35 of the conveyor chain 24 has a punched hole 35e formed in the center of the support piece portion 35b in the horizontal direction to support the outer peripheral side thereof while keeping the central portion of the lifting plate 37 in a non-supporting state. The large scooping load that the lifting plate 37 receives shockingly when the second object is vigorously scraped and scooped at the lower part of the lifting path 13c is applied with the base side of the lifting plate 37 fixed. Since the support piece portion 35b that supports the tip side and the left and right sides in contact with each other makes the middle part of the lifting plate 37 unsupported, the lifting plate 37 flexibly bends the central part in a recessed state. The buffer can be relaxed by pulling. Therefore, the durable chain drive can be smoothly performed while suppressing the impact and excessive vibration on the chain body 33 and the drive sprocket 23. Further, since the punch holes 35e are largely opened in the central portion of the support piece portions 35b of a large number of support brackets 35, there is an advantage that the weight of the conveyor chain 24 can be rationally reduced.

Next, another embodiment of the lifting body 25 will be described with reference to FIG. The same components as those of the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.
In the illustrated lifting body 25, the lifting plate 37 is formed in an inverted V shape in a side view so that the tip side of the recessed portion faces upward to increase the lifting amount of the second object and vibrate during lifting. The second item is prevented from falling unnecessarily from the tip side.
That is, the support bracket 35 in this case is formed via the bent portion 41 so that the tip portion 40 of the support piece portion 35b bends upward, so that the base side is fixed to the support piece portion 35b by the bolt 36a. Since the tip end side of the lifting plate 37, which is a free end, is supported upward by the tip portion 40, each action during scooping and lifting can be performed more reliably and efficiently.

At this time, it is desirable that the support piece portion 35b is bent at an acute angle with respect to the mounting piece portion 35a to form a downwardly inclined surface, and in this case, the space for placing the second object can be further increased. Further, when the end portion of the chain side lifting piece 37b formed on both sides of the fitting recess 37a is projected long to the outer peripheral position of the roller 33c, the lifting plate 37 is brought closer to this portion by the chain guide 32. There are advantages that the leakage of the second product from the gap between the two can be minimized, and the scraper action on the surface of the chain guide 32 is also preferably performed.

A Combine 6 Threshing device 10 First conveyor device 11 Second conveyor device 13 Lifting body case 13a Frame case 13y Lifting path 22 First spiral 22a Second spiral 23 Drive sprocket 23a Driven sprocket 25 Lifting body 32 Chain guide 33 Chain Main body 33e Mounting part 33h Chain roller 33r Roller spacing hole 35 Support bracket 35a Mounting piece part 35b Support piece part 35c Notch 35e Drilling hole 37 Lifting plate 37a Fitting recess H Transport interval

Claims (2)

The drive sprocket (23) and the driven sprocket (23a) pivotally supported by the unloading main body case (13) are contained in the second conveyor device (11), which is a unloading conveyor erected on the grain removal device (6). The chain body (33), which is wound around the chain and has a chain roller (33c) and is lifted and moved along the chain guide (32), and the link of the chain body (33) have a transport interval (H). In the unloading conveyor of the grain removal device, which installs a conveyor chain (24) composed of a unloading body (25) for scooping up and transporting a second object attached to a protruding mounting portion (33e).
A vertical mounting piece (35a) and a horizontal support piece (35b) that bend the lifting body (25) in an L-shape in a side view and detachably attach the left and right center portions to the mounting portion (33e). ), And the base side is attached to the support piece (35b) of the support bracket (35), and the tip side is supported in a protruding state as a free end having elastic force. A notch is formed in a recessed shape from the lower end at the left and right center positions of the mounting piece (35a) of the support bracket (35) in the configuration of the lifting plate (37) having a horizontal shape to be mounted. Then, the cutout portion (35c) is provided so as to face the roller spacing hole (33r) formed between the upper and lower rollers (33c), and is recessed from the base end portion at the left and right center position of the lifting plate (37). A unloading conveyor for a grain removal device, characterized in that a fitting recess (37a) notched in a shape is formed, and the fitting recess (37a) is provided in a state of being inserted into a chain body (33). The support bracket (35) has a punching hole (35e) at a central position of the support piece portion (35b) to make the midway portion of the lifting plate (37) unsupported, and the lifting plate (37) is provided. The unloading conveyor for the threshing apparatus according to claim 1, which is supported.

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