CN211210585U - Threshing roller, threshing device and threshing system comprising same - Google Patents
Threshing roller, threshing device and threshing system comprising same Download PDFInfo
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- CN211210585U CN211210585U CN201922130548.9U CN201922130548U CN211210585U CN 211210585 U CN211210585 U CN 211210585U CN 201922130548 U CN201922130548 U CN 201922130548U CN 211210585 U CN211210585 U CN 211210585U
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- threshing
- threshing roller
- roller
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- 239000000463 material Substances 0.000 claims abstract description 33
- 239000008187 granular material Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 13
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- 239000010959 steel Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 235000013339 cereals Nutrition 0.000 abstract description 8
- 239000010902 straw Substances 0.000 abstract description 5
- 240000008042 Zea mays Species 0.000 abstract description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 abstract description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 abstract description 2
- 235000005822 corn Nutrition 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 11
- 239000003381 stabilizer Substances 0.000 description 8
- 241000209094 Oryza Species 0.000 description 7
- 235000007164 Oryza sativa Nutrition 0.000 description 7
- 235000009566 rice Nutrition 0.000 description 7
- 238000003306 harvesting Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 241000251169 Alopias vulpinus Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
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Abstract
The utility model provides a threshing roller, threshing device and contain its threshing system relates to agricultural machine technical field, and it is unreasonable to have solved the threshing device structure, and the technical problem that the cereal loss is big. The surface of the threshing roller is provided with two pushing toothed plates which are distributed in a double-helix different spiral direction, and the top end of each pushing toothed plate is uniformly provided with a plurality of threshing teeth along the length direction; the threshing device comprises a threshing roller and a threshing roller which is rotatably arranged in the threshing roller and used for conveying and threshing crops, a feed inlet and a discharge outlet for the crops to enter and exit are formed in the threshing roller, and a filtering screen for the granules to pass through is arranged at the bottom of the threshing roller; the threshing system comprises the threshing device. The utility model discloses a set up two of the different spiral shell of double helix and push away the material pinion rack to on the threshing roller, the crop that enters into in the threshing roller is divided into two parts and is separately carried and the threshing, has reduced density, is favorable to the separation of corn and straw, avoids the crop loss, reduces threshing roller running resistance.
Description
Technical Field
The utility model belongs to the technical field of agricultural machine technique and specifically relates to a threshing system that is used for threshing roller, threshing device of rice and contains it.
Background
The thresher is a crop harvesting machine for harvesting grain crop kernels and straws of rice, wheat and the like, can separate the kernels from the straws, reduces the labor intensity of crop harvesting, and also improves the level of agricultural mechanization; its threshing device includes threshing roller and threshing roller, and the threshing roller setting is provided with along axial direction of delivery and pushes away the material pinion rack along arranging of axial direction of delivery on the threshing roller, push away and be provided with the threshing tooth on the material pinion rack, and rice gets into and is pushed the discharge gate that is located threshing roller opposite side under the spiral promotion of threshing roller through the pan feeding mouth that is located threshing roller one end, separates corn and pole through the threshing tooth at rotatory propelling movement in-process, and the grain that takes off falls to the filter sieve that is located threshing roller below under the action of gravity, and the rice pole that finishes by the threshing is thrown out from the discharge gate.
The applicant has found that the prior art has at least the following technical problems:
the feed inlet and the discharge gate of current threshing roller are located the both ends of threshing roller respectively, and this kind of threshing mode has certain defect: 1. the rice entering the threshing roller is conveyed to the other end from one end, the conveying weight is uneven, the conveying weight is large, the operation is unstable, the power source specification is large, and the energy consumption is high; 2. because the rice threshing process is large in thickness, not beneficial to falling of grains, easy to carry away along with the rod, low in threshing efficiency and poor in effect, and grain loss is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a threshing roller, threshing device and contain its threshing system for crops such as rice, wheat, soybean to solve the threshing device structure that exists among the prior art unreasonable, the big technical problem of cereal loss.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a threshing roller, the threshing roller surface is provided with two pushing toothed plates, two pushing toothed plates are distributed in double helix different spiral directions, and each pushing toothed plate top end is evenly provided with a plurality of threshing teeth along the length direction;
the double-spiral different spiral distribution of the pushing toothed plate has two distribution modes:
the first method comprises the following steps: one pushing toothed plate extends to the middle from one end of the threshing roller in a spiral mode, and the other pushing toothed plate extends to the middle from the other end of the threshing roller in a spiral mode;
in the alternative, the first and second sets of the first,
and the second method comprises the following steps: for one, the pushing toothed plate extends to one end from the middle of the threshing roller in a spiral mode, and the other pushing toothed plate extends to the other end from the middle of the threshing roller in a spiral mode.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
As a further improvement, the material pushing toothed plate is arranged around the spiral steel ring around the threshing roller, the spiral steel ring is distanced from the interval for holding crops is left between the surfaces of the threshing roller.
As a further improvement of the utility model, the threshing teeth are rod-shaped structures and are vertically arranged on the spiral steel ring.
As a further improvement of the utility model, the cross section of the threshing teeth is trapezoidal.
As a further improvement of the utility model, the threshing teeth are positioned on different helicoids and are just opposite to the arrangement.
As a further improvement, the threshing roller includes pivot, end plate and stabilizer bar, the pivot both ends are rotated respectively and are set up two relative settings on the end plate, the quantity of stabilizer bar is a plurality of, all the stabilizer bar is the circumference and distributes, and both ends respectively with two end plate fixed connection is in order to form the threshing roller, the spiral steel ring is around establishing all the stabilizer bar outside.
As a further improvement, the two spiral sets the material pushing toothed plate mirror symmetry is arranged.
The utility model provides a threshing device, which comprises a threshing roller and a threshing roller which is rotatably arranged in the threshing roller and is used for conveying and threshing crops, wherein the threshing roller is provided with a feed inlet and a discharge outlet for feeding and discharging the crops, and the bottom of the threshing roller is provided with a filter screen for passing the granules;
when the pushing toothed plates adopt a first distribution mode, the number of the feeding ports is two, the feeding ports are respectively arranged at two ends of the threshing roller and correspond to the spiral inlets of each pushing toothed plate, the number of the discharging ports is one, and the discharging ports are arranged in the middle of the threshing roller and correspond to the common spiral outlets of the two pushing toothed plates;
work as when pushing away the material pinion rack and adopting first distribution mode, discharge gate quantity is two, sets up respectively threshing roller both ends are corresponding to each push away the spiral export of material pinion rack, feed inlet quantity is one, sets up corresponding to two in the middle of the threshing roller push away the common spiral entry of material pinion rack.
As a further improvement, the number of the threshing roller is two, and the tandem material links up the setting, two in the threshing roller on the threshing roller push away the material pinion rack and adopt different two-screw different spiral direction distribution mode respectively.
As a further improvement, the utility model is located the front side on the threshing roller push away the material pinion rack and adopt second distribution mode, be located the rear side on the threshing roller push away the material pinion rack and adopt first distribution mode.
As a further improvement, the threshing roller is arranged in tandem and has a height difference on the same plane or around the same plane.
The utility model provides a pair of threshing system, include threshing device.
As the utility model discloses a further improvement, including two sets among the threshing device threshing roller sets up in tandem, is located the front side in the threshing roller is middle feeding both ends ejection of compact, is located the rear side the threshing roller is ejection of compact in the middle of the both sides feeding.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a threshing device, through set up two of different spiral shell directions of double helix and push away the material pinion rack on threshing roller, thereby separate into two parts threshing roller's inside threshing chamber, the crop that enters into threshing roller is divided into two parts and is carried and the threshing, not only alleviateed the weight that threshing roller carried the crop, and thinned the crop and carried thickness, can make the aggregate of pressing from both sides between the crop pole smoothly pass through and fall into on the filter screen of below, the loss of crop has been avoided, and because the crop weight of synchronous transport threshing lightens, thickness reduction, the power supply specification of configuration is little, the energy consumption is low; the main difference between the threshing rollers in the threshing system provided by the utility model and the existing threshing rollers is that the number of the threshing rollers in the threshing system of the utility model is a pair, the feeding is carried out in the middle of the former roller, and the discharging is carried out at two sides; feeding materials from two sides of the rear roller, and discharging materials from the middle; both threshing rollers are equipped with a bidirectional screw system; the feeding port of the first threshing roller divides the fed material into two halves and pushes the two halves to two sides, so that the density is reduced, and grains are separated from straws conveniently; meanwhile, the running resistance of the threshing roller is reduced, and the harvesting speed can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of an embodiment of the threshing roller of the present invention.
In figure 1, a threshing roller; 11. a rotating shaft; 12. an end plate; 13. stabilizing the rod; 2. a pushing toothed plate; 3. and (5) threshing teeth.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a threshing roller, the surface of the threshing roller 1 is provided with two pushing toothed plates 2, the two pushing toothed plates 2 are distributed in different spiral directions of double helix, and the top end of each pushing toothed plate 2 is uniformly distributed with a plurality of threshing teeth 3 along the length direction; the two pushing toothed plates 2 are arranged, the two pushing toothed plates 2 are different in screw direction, the entering crops can be divided into two directions for spiral conveying, so that the entering crops can be conveyed uniformly, the original crops with the same volume are conveyed from one end to the other end all the time, the crops with the same volume are divided into two paths for conveying, the amount of the crops distributed on each path is small, the thickness of the crops is thin, the weight of the materials conveyed in the same area is reduced, the specification of the provided conveying power source is reduced, energy is saved, and consumption is reduced;
because set up two and push away material pinion rack 2, two spiral directions that push away material pinion rack 2 are different moreover for the different spiral directions of double helix that push away material pinion rack 2 distribute and have two kinds of distribution modes:
first (two lateral medial helices): one pushing toothed plate 2 extends to the middle from one end of the threshing roller 1 in a spiral way, and the other pushing toothed plate 2 extends to the middle from the other end of the threshing roller 1 in a spiral way;
in the alternative, the first and second sets of the first,
second (middle to bilateral spiral): one pushing toothed plate 2 extends to one end from the middle of the threshing roller 1 in a spiral mode, and the other pushing toothed plate 2 extends to the other end from the middle of the threshing roller 1 in a spiral mode.
When the first distribution mode is adopted, the tail ends of the two pushing toothed plates 2 are overlapped together and share one spiral outlet; when the second distribution is adopted, the starting ends of the two pushing toothed plates 2 are overlapped together and share one spiral inlet;
as an alternative embodiment, the pushing toothed plate 2 is a spiral steel ring wound around the threshing roller 1, and a space for accommodating crops is left between the spiral steel ring and the surface of the threshing roller 1.
Furthermore, the threshing teeth 3 are rod-shaped structures and are vertically arranged on the spiral steel ring.
Further, the cross section of the threshing teeth 3 is trapezoidal.
In an alternative embodiment of the present invention, the threshing teeth 3 located on different coils are aligned. That is, all the threshing teeth 3 are arranged in a plurality of rows along the circumference of the threshing roller 1.
It should be noted that in the utility model discloses in, threshing roller 1 includes pivot 11, end plate 12 and stabilizer bar 13, and 11 both ends of pivot rotate respectively and set up on two relative end plates 12 that set up, and the quantity of stabilizer bar 13 is a plurality of, and all stabilizer bars 13 are the circumference and distribute, and both ends respectively with two end plates 12 fixed connection in order to form threshing roller 1, the spiral steel ring is around establishing in all stabilizer bar 13 outsides.
In order to ensure the uniformity of the conveyed objects, the two spirally arranged pushing toothed plates 2 are arranged in a mirror symmetry manner.
The utility model provides a threshing device, which comprises a threshing roller and a threshing roller 1 which is rotatably arranged in the threshing roller and is used for conveying and threshing crops, wherein the threshing roller is provided with a feed inlet and a discharge outlet for feeding and discharging the crops, the bottom of the threshing roller is provided with a filter screen for passing granules, and the threshing roller, the filter screen and other structures can be realized by adopting products in the prior art;
when the pushing toothed plates 2 adopt the first distribution mode, the number of the feeding ports is two, the feeding ports are respectively arranged at two ends of the threshing roller and correspond to the spiral inlets of each pushing toothed plate 2, the number of the discharging ports is one, and the discharging ports are arranged in the middle of the threshing roller and correspond to the common spiral outlets of the two pushing toothed plates 2;
when pushing away the material pinion rack 2 and adopting the second distribution mode, discharge gate quantity is two, sets up respectively at the threshing roller both ends and is corresponding to each spiral export that pushes away material pinion rack 2, and feed inlet quantity is one, sets up in the middle of the threshing roller and is corresponding to two common spiral entrys that push away material pinion rack 2.
In order to further improve the threshing efficiency and effect of the threshing device, the number of the threshing rollers is two, the two threshing rollers are arranged in a tandem manner, and the pushing toothed plates 2 on the threshing rollers 1 in the two threshing rollers are respectively distributed in different double-helix different helical directions, namely when the pushing toothed plate 2 on the previous threshing roller 1 adopts a first distribution mode, the pushing toothed plate 2 on the threshing roller 1 positioned behind adopts a second distribution mode; that is, when the pushing toothed plate 2 on the previous threshing roller 1 adopts the second distribution mode, the pushing toothed plate 2 on the threshing roller 1 positioned behind adopts the first distribution mode; of course, as the best embodiment, the pushing toothed plates 2 on the front threshing roller 1 adopt the second distribution mode, and the pushing toothed plates 2 on the rear threshing roller 1 adopt the first distribution mode.
It should be noted that two threshing cylinders arranged in tandem are on the same plane or have a height difference in front and back. When the height difference exists, the threshing roller positioned at the front is higher than the threshing roller positioned at the back; whether the two are positioned on the same plane or have a height difference, the materials are connected and thrown from the front threshing roller to the rear threshing roller by the rotating centrifugal force of the threshing rollers 1.
The utility model provides a pair of threshing system, including foretell threshing device.
Furthermore, the threshing device comprises two sets of threshing rollers which are arranged in tandem, the threshing rollers in the threshing rollers at the front side discharge from two ends of middle feeding, and the threshing rollers at the rear side discharge from the middle of two sides of feeding. That is to say, the double-helix pushing toothed plates on the threshing rollers in the threshing roller at the front side are in a spiral structure with the middle part entering and the two ends exiting, and the double-helix pushing toothed plates on the threshing rollers in the threshing roller at the rear side are in a spiral structure with the two ends entering and the middle part exiting.
The utility model provides a threshing device, through set up two of different spiral shell directions of double helix and push away the material pinion rack on threshing roller, thereby separate into two parts threshing roller's inside threshing chamber, the crop that enters into threshing roller is divided into two parts and is carried and the threshing, not only alleviateed the weight that threshing roller carried the crop, and thinned the crop and carried thickness, can make the aggregate of pressing from both sides between the crop pole smoothly pass through and fall into on the filter screen of below, the loss of crop has been avoided, and because the crop weight of synchronous transport threshing lightens, thickness reduction, the power supply specification of configuration is little, the energy consumption is low; the main difference between the threshing rollers in the threshing system provided by the utility model and the existing threshing rollers is that the number of the threshing rollers in the threshing system of the utility model is a pair, the feeding is carried out in the middle of the former roller, and the discharging is carried out at two sides; feeding materials from two sides of the rear roller, and discharging materials from the middle; both threshing rollers are equipped with a bidirectional screw system; the feeding port of the first threshing roller divides the fed material into two halves and pushes the two halves to two sides, so that the density is reduced, and grains are separated from straws conveniently; meanwhile, the running resistance of the threshing roller is reduced, and the harvesting speed can be greatly improved.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The threshing roller is characterized in that two pushing toothed plates are arranged on the surface of the threshing roller, the two pushing toothed plates are distributed in a double-spiral different spiral directions, and a plurality of threshing teeth are uniformly distributed at the top end of each pushing toothed plate along the length direction;
the double-spiral different spiral distribution of the pushing toothed plate has two distribution modes:
the first method comprises the following steps: one pushing toothed plate extends to the middle from one end of the threshing roller in a spiral mode, and the other pushing toothed plate extends to the middle from the other end of the threshing roller in a spiral mode;
in the alternative, the first and second sets of the first,
and the second method comprises the following steps: for one, the pushing toothed plate extends to one end from the middle of the threshing roller in a spiral mode, and the other pushing toothed plate extends to the other end from the middle of the threshing roller in a spiral mode.
2. The threshing roller of claim 1, wherein the pushing toothed plate is a spiral steel ring wound around the threshing roller, and a space for containing crops is reserved between the spiral steel ring and the surface of the threshing roller.
3. The threshing roller of claim 2, wherein the threshing teeth are rod-shaped structures disposed vertically on the helical steel ring.
4. The threshing roller of claim 1, wherein the threshing teeth on different coils are diametrically opposed.
5. The threshing roller of claim 2 or 3, wherein the threshing roller comprises a rotating shaft, end plates and stabilizing rods, two ends of the rotating shaft are respectively rotatably arranged on the two oppositely-arranged end plates, the number of the stabilizing rods is multiple, all the stabilizing rods are circumferentially distributed, two ends of the stabilizing rods are respectively fixedly connected with the two end plates to form the threshing roller, and the spiral steel rings are arranged outside all the stabilizing rods.
6. The threshing roller of claim 1, wherein the two helically arranged pusher toothed plates are arranged in mirror symmetry.
7. A threshing device, which is characterized by comprising a threshing roller and a threshing roller which is rotationally arranged in the threshing roller and is used for conveying and threshing crops as claimed in any one of claims 1 to 6, wherein the threshing roller is provided with a feed inlet and a discharge outlet for feeding and discharging the crops, and the bottom of the threshing roller is provided with a filter screen for passing granules;
when the pushing toothed plates adopt a first distribution mode, the number of the feeding ports is two, the feeding ports are respectively arranged at two ends of the threshing roller and correspond to the spiral inlets of each pushing toothed plate, the number of the discharging ports is one, and the discharging ports are arranged in the middle of the threshing roller and correspond to the common spiral outlets of the two pushing toothed plates;
work as when pushing away the material pinion rack and adopting the second distribution mode, discharge gate quantity is two, sets up respectively threshing roller both ends are corresponding to each push away the spiral export of material pinion rack, feed inlet quantity is one, sets up corresponding to two in the middle of the threshing roller push away the common spiral entry of material pinion rack.
8. The threshing device according to claim 7, wherein the number of the threshing rollers is two, the two threshing rollers are arranged in tandem, and the pushing toothed plates on the threshing rollers in the two threshing rollers respectively adopt different double-helix different-helical-direction distribution modes.
9. The threshing device according to claim 8, wherein the pushing toothed plates on the front threshing rollers are distributed in a second manner, and the pushing toothed plates on the rear threshing rollers are distributed in a first manner.
10. A threshing system comprising a threshing device according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922130548.9U CN211210585U (en) | 2019-12-02 | 2019-12-02 | Threshing roller, threshing device and threshing system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922130548.9U CN211210585U (en) | 2019-12-02 | 2019-12-02 | Threshing roller, threshing device and threshing system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211210585U true CN211210585U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922130548.9U Active CN211210585U (en) | 2019-12-02 | 2019-12-02 | Threshing roller, threshing device and threshing system comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN211210585U (en) |
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Effective date of registration: 20220207 Address after: 156400 jinbaojiayuan complex building, Customs Road, East District, Tongjiang City, Jiamusi City, Heilongjiang Province Patentee after: Tongjiang Yide Agricultural Technology Development Co.,Ltd. Address before: 158400 a Bei Xiang Xin Zhong Cun, Hulin City, Jixi City, Heilongjiang Province Patentee before: Yuan Fangguo |