CN117682270B - Agricultural grain scraper conveyor - Google Patents
Agricultural grain scraper conveyor Download PDFInfo
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- CN117682270B CN117682270B CN202311291184.7A CN202311291184A CN117682270B CN 117682270 B CN117682270 B CN 117682270B CN 202311291184 A CN202311291184 A CN 202311291184A CN 117682270 B CN117682270 B CN 117682270B
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- 238000007790 scraping Methods 0.000 claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 10
- 108010066057 cabin-1 Proteins 0.000 description 22
- 230000009471 action Effects 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 102100033121 Transcription factor 21 Human genes 0.000 description 9
- 101710119687 Transcription factor 21 Proteins 0.000 description 9
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- 230000003287 optical effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of scraper conveyors, and particularly provides an agricultural grain scraper conveyor which comprises a conveying cabin and a feeding cover arranged at the top end of a feeding end of the conveying cabin, wherein a first sprocket is connected with the feeding end of the conveying cabin through a bearing and a transmission shaft, a second sprocket is connected with a discharging end of the conveying cabin through an adjusting component and a transmission rotating shaft, a transmission chain is connected between the first sprocket and the second sprocket, a plurality of scraping plates are arranged on the transmission chain, adjusting frame mechanisms are symmetrically arranged on two sides of the conveying cabin, the adjusting frame mechanisms comprise an upper pressing frame and a lower pressing frame, the chain can be automatically tensioned after being loosened through the arrangement of the upper pressing frame and the lower pressing frame, and the tensioning frequency of the chain can be automatically tensioned without controlling.
Description
Technical Field
The invention relates to the technical field of scraper conveyors, in particular to an agricultural grain scraper conveyor.
Background
The scraper conveyor is mainly horizontally conveyed, has a simple structure, can convey materials from a feeding end to a discharging end, is composed of a cabin, a chain wheel arranged at the feeding end and the discharging end of the cabin and a scraping plate which is transmitted between the two chain wheels through a chain, and is put into the cabin through a feeding port and falls on the scraping plate, then is transmitted to the discharging end through the scraping plate to finish discharging, and is applied to grain conveying.
In order to improve the feeding area, most scraper conveyors are of a single chain structure, all scraper plates are uniformly arranged on the same chain, and due to the fact that the length of a cabin is determined, the distance between two chain wheels arranged at the feeding end and the discharging end of the cabin is long, so that the chain between the two chain wheels is long, the chain links between the two chain wheels are naturally loosened due to long conveying stroke, the chain can be disjointed from the two chain wheels due to loosening in actual use, the existing tensioning mode is that a tensioning wheel or a tensioning structure is arranged at the feeding end or the discharging end of the cabin, the mode cannot be automatically adjusted according to loosening conditions of the chain, especially, the weight of grain intercepted on each scraper plate is inconsistent in grain conveying, automatic tensioning of the chain is difficult to be carried out according to the actual loosening conditions of the chain, and frequency is difficult to be controlled by artificial tensioning.
Disclosure of Invention
The invention aims to solve the technical problem that the chain can be automatically tensioned after being loosened by arranging the upper pressing frame and the lower pressing frame, and the tensioning frequency is not required to be controlled in a mode that the chain can be automatically tensioned.
The technical scheme of the invention is that the agricultural grain scraper conveyor comprises a conveying cabin and a feeding cover arranged at the top end of a feeding end of the conveying cabin, wherein the feeding end of the conveying cabin is connected with a first sprocket through a bearing and a transmission shaft, a discharging end of the conveying cabin is connected with a second sprocket through a bearing, a transmission chain is connected between the first sprocket and the second sprocket, a plurality of scraping plates are arranged on the transmission chain, and two sides of the conveying cabin are symmetrically provided with adjusting frame mechanisms, each adjusting frame mechanism comprises an upper pressing frame and a lower pressing frame;
A guide plate is fixed on the inner wall surface of the conveying cabin, a guide hole is formed in the guide plate, the lower pressing frame is in sliding fit in the guide hole, the lower pressing frame can move up and down along the guide hole, a lower pressing plate capable of moving up and down along with the lower pressing frame is fixed on the lower pressing frame, a spring which is elastically supported between the lower pressing plate and the guide plate and is used for enabling the lower pressing frame to move down and then to reset and rise is sleeved on the lower pressing frame, the bottom end of the lower pressing frame is connected with a bearing frame which enters the conveying cabin from an outlet end material of the conveying cabin and is positioned below a transmission track of the scraping plate, the top end of the lower pressing frame is connected onto the upper pressing frame, when the lower pressing frame moves down along with the transmission chain, the scraping plate is pressed on the upper pressing frame due to the downward loosening action of the transmission chain, the upper pressing plate is driven by the upper pressing frame, and the upper pressing plate can move down along with the upper pressing frame, and the top end of the upper pressing frame is positioned on the upper pressing frame along with the upper pressing frame;
the pressure regulating frame descends on the scraping plate from the upper part of the transmission track of the scraping plate, and pushes part of chain links in the transmission chain to descend between the first chain wheel and the second chain wheel so as to automatically compensate the slack state of the transmission chain between the first chain wheel and the second chain wheel.
As a further preferred aspect, the upper pressing frame is a bent rod located at the side of the conveying cabin, one end of the upper pressing frame enters from the feeding end of the conveying cabin to the top end of the lower pressing frame connected in the conveying cabin, the other end of the upper pressing frame extends to the middle of the conveying cabin and is connected to the middle of the upper pressing plate, two ends of the upper pressing plate extend from the top end of the upper pressing frame to two ends of a chain link between the first chain wheel and the second chain wheel respectively, two ends of the upper pressing plate are bent upwards, and two ends of the pressure regulating frame are connected to the bent parts with two ends upwards of the upper pressing plate, so that the pressure regulating frame is located above the chain link between the first chain wheel and the second chain wheel;
As a further preferred feature, the length dimension of the load carrier coincides with the length dimension of the pressure regulating frame, the load carrier extending along the side of the interior cavity of the transport pod from the side of the second sprocket to the side up to the first sprocket.
As a further preferred aspect, the pressure regulating frame and the load carrying frame are both metal rods.
As a further preferable mode, the scraping plate is of an L-shaped bent plate structure, when the scraping plate is transferred from the discharge end of the conveying cabin to the direction of the feed end of the conveying cabin along with the transmission chain, the L-shaped bent plate of the scraping plate is oriented to the feed end of the conveying cabin, and when the scraping plate is transferred from the feed end of the conveying cabin to the direction of the discharge end of the conveying cabin along with the transmission chain, the L-shaped bent plate of the scraping plate is oriented to the discharge end of the conveying cabin.
As a further preferable mode, the outer wall surface of the scraping plate is welded with a secondary scraping plate along the length direction of the scraping plate, the structure of the secondary scraping plate is consistent with that of the scraping plate, the secondary scraping plate is also of an L-shaped bent plate structure, and the direction of the L-shaped bent plate of the secondary scraping plate is consistent with that of the L-shaped bent plate of the scraping plate.
As a further preferable aspect, the length dimension of the auxiliary scraping plate is smaller than that of the scraping plate, so that a gap for placing the pressure regulating frame is reserved between two ends of the auxiliary scraping plate and two ends of the scraping plate.
As a further preferred mode, two sides of the inner cavity of the conveying cabin are respectively provided with a set of automatic tightening mechanisms positioned at the outer ends of the two lower pressing frames, each automatic tightening mechanism comprises a pull shaft 7, a threaded seat, a tightening screw rod and a rack-and-pinion assembly, the second chain wheels are connected to the middle of the pull shaft 7 through bearings in a switching mode, pull holes are formed in the two ends of the pull shaft 7, threaded holes are formed in the threaded seats, the threaded seats are fixed on two inner side walls of the conveying cabin, the tightening screw rod is connected to the threaded seats through the threaded holes, a polished rod part of the tightening screw rod is provided with a bolt cap, a part of the tightening screw rod with the bolt cap is arranged in the pull holes in a penetrating mode and used for limiting the two ends of the pull shaft 7 in the conveying cabin, and each rack-and-pinion assembly comprises a bevel gear fixed at the end of the tightening screw rod and a bevel gear fixed on the lower pressing plate, and the bevel gear is meshed on the bevel gear.
Compared with the prior art, the chain link transmission mechanism has the advantages that when the transmission chain is loosened, the chain links at the lower part are loosened downwards, the scraping plates which are transmitted to the bottom of the conveying cabin along with the transmission chain fall downwards, meanwhile, the scraping plates form downward pressing on the two side bearing frames by utilizing the two ends due to the downward falling, the bearing frames are forced to descend, the lower pressing frames are driven to descend when the bearing frames descend, the upper pressing frames are driven to descend by the lower pressing frames, the upper pressing plates are driven to descend when the upper pressing frames descend, the pressure regulating frames fall onto the scraping plates which are transmitted to the upper part, then the chain links which are transmitted to the upper part are pressed onto the chain links which are transmitted to the upper part by the scraping plates, and the chain links which are transmitted to the upper part descend due to the fact that the chain links which are transmitted to the upper part fall between the first chain wheels and the second chain wheels are pressed, and the chain links which are transmitted to the upper part can realize the pressing force from the whole chain links which are transmitted to the upper part due to the loosening of the transmission chain.
Therefore, when the transmission chain is loosened, the loosening state of the transmission chain is automatically compensated by utilizing the actions of the lower pressing frame and the upper pressing frame, the transmission chain is automatically tensioned between the first chain wheel and the second chain wheel, and the tensioning frequency is not required to be controlled in a mode that the chain can be automatically tensioned.
Drawings
Fig. 1 is a schematic view of a first structure of an agricultural grain scraper conveyor according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of an agricultural grain scraper conveyor according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a portion a of the agricultural grain scraper conveyor according to the embodiment of the present invention, which is led out from fig. 2;
fig. 4 is a schematic view of a third structure of an agricultural grain scraper conveyor according to an embodiment of the present invention;
Fig. 5 is an enlarged schematic view of a portion B of the agricultural grain scraper conveyor according to the embodiment of the present invention, which is led out from fig. 4;
fig. 6 is a schematic structural view of an adjusting frame mechanism in an agricultural grain scraper conveyor according to an embodiment of the present invention;
Fig. 7 is a schematic structural view of an adjusting rack mechanism in an agricultural grain scraper conveyor according to an embodiment of the present invention at another view angle;
Fig. 8 is a schematic structural view of a scraper in an agricultural grain scraper conveyor and a secondary scraper on the scraper according to an embodiment of the present invention.
In the figure: 1. a transport pod; 2. a feed hood; 3. a first sprocket; 4. a second sprocket; 5. a drive chain; 6. a scraping plate; 61. an auxiliary scraping plate; 62. a notch; 7. an adjusting frame mechanism; 8. a pressing frame is arranged; 9. a pressing frame is pressed down; 10. an upper press plate; 11. a pressure regulating frame; 12. a guide plate; 13. a guide hole; 14. a lower pressing plate; 15. a spring; 16. a bearing frame; 17. pulling a shaft; 18. a screw seat; 19. tightening a screw rod; 20. a rack and pinion assembly; 21. bevel gears; 22. helical racks; 23. and (5) pulling holes.
Detailed Description
The foregoing and other embodiments and advantages of the invention will be apparent from the following, more complete, description of the invention, taken in conjunction with the accompanying drawings. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention.
In one embodiment, as shown in fig. 1-8.
The utility model provides an agricultural grain scraper conveyor, it includes transport pod 1 and installs the feeding cover 2 on transport pod 1 feed end top, the feed end of transport pod 1 has first sprocket 3 through bearing and transmission shaft switching, the discharge end switching of transport pod 1 has second sprocket 4, connect drive chain 5 between first sprocket 3 and the second sprocket 4, install a plurality of places scraping plate 6 on the drive chain 5, transport pod 1's bilateral symmetry is equipped with adjusting frame mechanism 7, adjusting frame mechanism 7 includes upper pressure frame 8 and lower pressure frame 9;
A guide plate 12 is fixed on the inner wall surface of the conveying cabin 1, a guide hole 13 is arranged on the guide plate 12, a lower pressing frame 9 is in sliding fit in the guide hole 13, the lower pressing frame 9 can move up and down along the guide hole 13, a lower pressing plate 14 which can move up and down along with the lower pressing frame 9 is fixed on the lower pressing frame 9, a spring 15 which is elastically supported between the lower pressing plate 14 and the guide plate 12 and is used for enabling the lower pressing frame 9 to descend and then to return and ascend is sleeved on the lower pressing frame 9, the bottom end of the lower pressing frame 9 is connected with a discharge end material of the conveying cabin 1 to enter the conveying cabin 1, the top end of the lower pressing plate 10 is fixed with an upper pressing plate 10 which can descend along with the upper pressing plate 8, and the top end of the upper pressing plate 10 is fixed with a pressure regulating frame 11 which is symmetrically arranged above the upper pressing plate 16 and can descend along with the upper pressing plate 8 above the transmission track of the scraping plate 6 when the scraping plate 6 is extruded on the upper pressing plate 16 due to downward loosening action of the transmission chain 5 when the scraping plate 6 is conveyed to the upper pressing plate 16 by the transmission chain 5;
the pressure regulating frame 11 descends on the scraping plate 6 from the upper part of the transmission track of the scraping plate 6, and pushes part of chain links in the transmission chain 5 to descend between the first chain wheel 3 and the second chain wheel 4, so that the loose state of the transmission chain 5 is automatically compensated between the first chain wheel 3 and the second chain wheel 4.
In order to achieve long-distance material conveying of the conveying cabin 1, the conveying cabin 1 is provided with a longer size, the distance between the corresponding first chain wheel 3 and the corresponding second chain wheel 4 is longer, the driving chain 5 is longer, when the driving chain 5 is loosened, the driving chain 5 can fall off from the first chain wheel 3 or the driving chain 4, when the driving chain 5 is loosened, the chain links of the lower part of the driving chain 5 are loosened, the scraping plate 6 conveyed to the bottom of the conveying cabin 1 along with the driving chain 5 is caused to fall downwards, meanwhile, the scraping plate 6 utilizes two ends to form downward pressing on the bearing frames 16 at two sides due to falling downwards, the bearing frames 16 are forced to descend, the lower pressing frame 9 is driven to descend when the bearing frames 16 descend, the upper pressing frame 8 is driven to descend, the upper pressing frame 10 is driven to descend when the driving chain 5 is loosened, the upper platen 10 drops the pressure regulating frame 11 onto the scraping plates 6 transferred to the upper part, then the scraping plates 6 transferred to the upper part are pressed down onto the chain links transferred to the upper part, and the chain links of the upper part are lowered, so that when the chain links transferred to the upper part are lowered, the chain links are pressed between the first chain wheels 3 and the second chain wheels 4, and the force for pressing the chain links transferred to the upper part is actually the downward falling force of the chain links from the lower part due to the loosening of the whole transmission chain 5, therefore, when the loosening of the transmission chain 5 occurs, the loosening state of the transmission chain 5 is automatically compensated by the action of the lower pressing frame 9 and the upper pressing frame 8, and the transmission chain 5 is automatically tensioned between the first chain wheels 3 and the second chain wheels 4.
In summary, the tensioning mode of the driving chain 5 not only can realize automation, but also adopts the tensioning principle to come from the scraping plates 6 transferred to the bottom along with the driving chain 5, and because the number of the scraping plates 6 transferred to the bottom along with the driving chain 5 is multiple, when the driving chain 5 is in a loosening phenomenon, all the scraping plates 6 transferred to the bottom can naturally fall, two ends of the scraping plates 6 transferred to the bottom can simultaneously act on two bearing frames 16, and the effect of utilizing the falling actions of a large number of scraping plates 6 transferred to the lower part and simultaneously acting on two bearing frames is that: when the transmission chain 5 is in a loosening phenomenon, the natural falling of the scraping plates 6 can act on the two side bearing frames 16 in a large area, so that the bearing frames 16 can generate dead weight at all positions and fall downwards due to the dead weight, even if the loosening amplitude of the transmission chain 5 is smaller, the total weight of the scraping plates 6 falling onto the two side bearing frames 16 can be satisfied to cause the falling of the bearing frames 16, and when the falling condition of the bearing frames 16 is satisfied, the upper pressing frames 8 can be satisfied to drive the lower pressing frames 9 and move down by the lower pressing frames 9 to descend, and the upper pressing frames 8 can be satisfied to drive the pressure regulating frames 11 to descend onto the links of the transmission chain 5 transmitted to the upper part, so that the upper part links can be automatically tensioned between the first chain wheel 3 and the second chain wheel 4. The effect of the lowering action of the two-sided pressure regulating frame 11, which is simultaneously transferred to the plurality of scraping plates 6 on the upper part, is that: so that the scraping plates 6 transferred to the upper part along with the transmission chain 5 can descend simultaneously, the scraping plates 6 transferred to the upper part are distributed between the first sprocket wheel 3 and the second sprocket wheel 4 along the upper part chain link of the transmission chain 5 and are distributed along the first sprocket wheel 3 and the second sprocket wheel 4 at equal intervals, so that the scraping plates 6 simultaneously descend to form downward pressing on the chain links in a plurality of equal-distance areas between the first sprocket wheel 3 and the second sprocket wheel 4, namely the scraping plates 6 simultaneously descend to form tensioning action on the chain links between the first sprocket wheel 3 and the second sprocket wheel 4 in equal-distance range, local chain link stress is not caused to cause stress concentration of the transmission chain 5, and stable transfer of the chain links between the first sprocket wheel 3 and the second sprocket wheel 4 is ensured.
As shown in fig. 6 and 7, the upper pressing frame 8 is a bent rod located at the side of the conveying cabin 1, one end of the upper pressing frame 8 enters the conveying cabin 1 from the feeding end of the conveying cabin 1 to the top end of the lower pressing frame 9, the other end of the upper pressing frame 8 extends to the middle of the conveying cabin 1 and is connected to the middle of the upper pressing plate 10, and when the upper pressing frame 8 descends, acting force can act on the middle of the upper pressing plate 10, so that the upper pressing plate 10 receives descending force, and the stress on two sides is uniform.
The two ends of the upper pressing plate 10 extend from the top end of the upper pressing frame 8 to the two ends of the chain link between the first chain wheel 3 and the second chain wheel 4 respectively, the two ends of the upper pressing plate 10 are bent upwards, and the two ends of the pressure regulating frame 11 are connected to the bent parts of the two ends of the upper pressing plate 10 upwards, so that the pressure regulating frame 11 is positioned above the chain link between the first chain wheel 3 and the second chain wheel 4; when the pressure regulating frame 11 descends to the chain link between the first chain wheel 3 and the second chain wheel 4, the action area between the pressure regulating frame 11 and the chain link is increased, namely, when the pressure regulating frame 11 descends to the chain link between the first chain wheel 3 and the second chain wheel 4, the pressure regulating frame can form downward force on all the chain links transmitted to the upper part, and further, when the chain link is stressed, stress concentration of the transmission chain 5 caused by stress of a part or a plurality of parts of chain links is avoided, and stable transmission of the chain link between the first chain wheel 3 and the second chain wheel 4 is ensured. In the same way, in order to enable the scraper 6 transferred to the lower part to act on the load-carrying frame 16 for the most part, to enable the load-carrying frame 16 to descend effectively, and to ensure that when the load-carrying frame 16 descends, the pressure regulating frame 11 consistent with the length thereof can descend effectively through a series of transmissions, and is pressed onto the scraper 6 transferred to the upper part (the scraper 6 of the most part) at one time through the pressure regulating frame 11 with a longer size, to enable the transmission chain 5 transferred between the first sprocket wheel 3 and the second sprocket wheel 4 to be tensioned effectively, and to ensure the tensioning range to be related between the first sprocket wheel 3 and the second sprocket wheel 4, so that local chain link stress concentration is avoided, and chain link tripping is avoided.
As shown in fig. 1 to 8, the scraping plate 6 has an L-shaped bent plate structure, when the scraping plate 6 is transferred from the discharge end of the conveying cabin 1 to the feed end of the conveying cabin 1 along with the transmission chain 5, the L-shaped bent plate of the scraping plate 6 faces the feed end of the conveying cabin 1, and when the scraping plate 6 is transferred from the feed end of the conveying cabin 1 to the discharge end of the conveying cabin 1 along with the transmission chain 5, the L-shaped bent plate of the scraping plate 6 faces the discharge end of the conveying cabin 1.
The outer wall surface of the scraping plate 6 is welded with a secondary scraping plate 61 along the length direction, the structure of the secondary scraping plate 61 is consistent with that of the scraping plate 6, the secondary scraping plate 61 is also of an L-shaped bent plate structure, and the orientation of the L-shaped bent plate of the secondary scraping plate 61 is consistent with that of the scraping plate 6.
The length dimension of the auxiliary scraping plate 61 is smaller than that of the scraping plate 6, so that a gap 62 for placing the pressure regulating frame 11 is reserved between two ends of the auxiliary scraping plate 61 and two ends of the scraping plate 6, wherein the placement refers to that a lifting space is reserved for the pressure regulating frame 11, so that the pressure regulating frame 11 can be pressed on the scraping plate 6 when being lowered, and then the scraping plate 6 acts on a chain link above to form effective tension on the chain link.
As can be seen from fig. 8, the width of the bent plate structure of the auxiliary scraping plate 61 is greater than the width of the bent plate structure of the scraping plate 6, so that when the auxiliary scraping plate 61 follows the scraping plate 6 to transfer material to the discharge end along with the driving chain 5 after receiving material from the feed end, the material not only falls on the scraping plate 6, but also falls on the auxiliary scraping plate 61 when the material is directly received by the feed cover 2, and the scraping plate 6 and the auxiliary scraping plate 61 transfer the material together, thereby improving the feeding efficiency. The auxiliary scraping plate 61 further increases the weight of the scraping plate 6, when materials are simultaneously transferred to the discharging end of the conveying cabin 1 on the auxiliary scraping plate 61 and the scraping plate 6, as the materials are only limited to be transferred to the bottom chain link of the transmission chain 5 (the chain link is empty when being transferred to the upper side, the prior use mode is not repeated), the self-gravity of the chain link in the bottom range is increased due to the weight increase of the materials, when the transmission chain 5 is loose, the downward loosening amplitude of the bottom chain link is increased, the corresponding downward loosening amplitude of the chain link is increased, the descending amplitude of the load-bearing frame 16 is increased through a series of transfer relations, even if the chain link is loose, the gravity of the materials in the auxiliary scraping plate 61 is utilized to the scraping plate 6, the descending action is satisfied, the descending amplitude of the load-bearing frame 16 is increased as much as possible, thereby the descending amplitude of the lower pressing frame 9 is increased as much as possible, the upper pressing frame 8 is directly acted on the upper side of the upper chain link from the notch 62 through the upper pressing plate 10, the second action is implemented to the chain link to the second action of the chain link 4, and the second action is implemented between the purposes of the chain link and the second action of the chain link is achieved. The self weight is increased to increase the conveying speed of the conveyor and to realize automatic tensioning as much as possible for small slack in the drive chain 5, so that the lowering width of the load-carrying frame 16 is increased.
The present invention also provides another tensioning embodiment: as shown in fig. 1 and 2, two sides of the inner cavity of the conveying cabin 1 are respectively provided with a set of automatic tightening mechanisms positioned at the outer ends of the two pressing frames 9, each automatic tightening mechanism comprises a pull shaft 17 for mounting the second chain wheel 4, a thread seat 18, a tightening screw 19 and a rack-and-pinion assembly 20, the second chain wheel 4 is connected to the middle part of the pull shaft 17 in a switching manner through a bearing, and the second chain wheel 4 and the first chain wheel 3 are kept on the same straight line, so that stable transmission of the transmission chain 5 is ensured.
The two ends of the pull shaft 17 are provided with pull holes 23, the threaded seats 18 are provided with threaded holes, and the two ends of the pull shaft 17 are empty at two sides of the inner cavity of the conveying cabin 1; in other words, the pull shaft 17 is movable in the longitudinal direction (in the feeding direction) in the transport pod 1.
The screw seat 18 is fixed on two inner side walls of the conveying cabin 1, the tightening screw rod 19 is connected to the screw seat 18 through a screw hole, an optical axis part of the tightening screw rod 19 penetrates through a pulling hole 23 of the pulling shaft 17, the optical axis end part of the tightening screw rod 19 is provided with a bolt cap, the bolt cap is limited on the other side of the pulling shaft 17, the pulling shaft 17 is always in a tensioned state, the relative pulling force between the pulling shaft 17 and the transmission chain 5 is ensured, and the two ends of the pulling shaft 17 are stressed and limited in the conveying cabin 1 and cannot freely move in the conveying cabin 1. Since the two threaded seats 18 are fixed to the two inner side walls of the transport pod 1, it is known that the pulling shaft 17 can be moved back and forth in the feeding direction in the transport pod 1, but whether or not the pulling shaft 17 is moved depends on whether or not the two tightening screws 19 rotate in the threaded holes of the threaded seats 18, when the two tightening screws 19 are simultaneously rotated and adjusted toward the discharge side of the transport pod 1, both ends of the pulling shaft 17 are simultaneously displaced by the caps at the end portions of the polish rod, that is, the pulling shaft 17 is adjusted toward the discharge side, and since the second sprocket 4 is fixed to the pulling shaft 17, the pulling shaft 17 is adjusted toward the discharge side, which corresponds to the adjustment of the pitch of the second sprocket 4 with respect to the first sprocket 3, which corresponds to the tensioning of the transmission chain 5 transmitted between the second sprocket 4 with respect to the first sprocket 3, and in order to enable the automatic tensioning, a rack gear assembly 20 is provided between the tightening screws 19 and the lower pressure plate 14.
The rack and pinion assembly 20 includes a bevel gear 21 fixed to an end of the tightening screw 19 and a helical rack 22 fixed to the lower pressure plate 14, the helical rack 22 being engaged with the bevel gear 21.
Because the lower pressure plate 14 is of a structure on the lower pressure frame 9, the power generated when the lower pressure frame 9 descends comes from the bearing frame 16, the reason when the bearing frame 16 descends is that the transmission chain 5 loosens, and when the transmission chain 5 loosens, the scraping plate 6 transmitted at the bottom falls onto the bearing frame 16 due to self weight, so that the bearing frame 16 transmits the power generated when the lower pressure frame 9 descends to the lower pressure frame 9, the lower pressure plate 14 is driven to descend, the bevel gear 21 is driven to rotate by the bevel gear 22 when the lower pressure plate 14 descends, the bevel gear 21 drives the tightening screw 19 to rotate, the tightening screw 19 adjusts towards the discharging side, the distance between the second chain wheel 4 and the first chain wheel 3 is correspondingly adjusted, the transmission chain 5 transmitted between the second chain wheel 4 and the first chain wheel 3 is automatically tensioned, and the tensioning mode is automatically realized.
The above-described orientation is not intended to represent a specific orientation of each component in the present embodiment, but is merely provided to facilitate description of the embodiments, and is set by referring to the orientation in the drawings, and it is essential that the specific orientation of each component be described according to the actual installation and actual use thereof and the orientation that is habitual to a person skilled in the art, and this is described.
The above-described embodiments are provided to further explain the objects, technical solutions, and advantageous effects of the present invention in detail. It should be understood that the foregoing is only illustrative of the present invention and is not intended to limit the scope of the present invention. It should be noted that any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without departing from the spirit and principles of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. The utility model provides an agricultural grain scraper conveyor, its characterized in that includes transport cabin (1) and installs feed hood (2) on transport cabin (1) feed end top, the feed end of transport cabin (1) has first sprocket (3) through bearing and transmission shaft switching, the discharge end switching of transport cabin (1) has second sprocket (4), connect drive chain (5) between first sprocket (3) and second sprocket (4), install a plurality of places on drive chain (5) and scrape flitch (6), the bilateral symmetry of transport cabin (1) is equipped with alignment jig mechanism (7), alignment jig mechanism (7) include upper press frame (8) and lower press frame (9);
A guide plate (12) is fixed on the inner wall surface of the conveying cabin (1), a guide hole (13) is formed in the guide plate (12), the lower pressing frame (9) is in sliding fit in the guide hole (13), the lower pressing frame (9) can move up and down along the guide hole (13), a lower pressing plate (14) capable of moving up and down along with the lower pressing frame (9) is fixed on the lower pressing frame (9), a spring (15) which is elastically supported between the lower pressing plate (14) and the guide plate (12) and is used for enabling the lower pressing frame (9) to return and ascend after descending is performed, the bottom end of the lower pressing frame (9) is connected with a load-bearing frame (16) which is positioned below the transmission track of the scraper blade (6) and can move up and down along with the lower pressing frame (16), the upper pressing frame (16) is connected with the upper pressing frame (8), the upper pressing frame (16) is driven by the scraper blade (6) and the transmission frame (16) to move down along with the transmission frame (16), an upper pressing plate (10) capable of descending along with the upper pressing plate is fixed at the top end of the upper pressing plate (8), and a pressure regulating frame (11) which is symmetrically arranged above the bearing frame (16) and is positioned above the transmission track of the scraping plate (6) and capable of descending along with the upper pressing plate (8) is fixed at the top end of the upper pressing plate (10);
The pressure regulating frame (11) descends on the scraping plate (6) from the upper part of the transmission track of the scraping plate (6) to push part of chain links in the transmission chain (5) to descend between the first chain wheel (3) and the second chain wheel (4), so that the loose state of the transmission chain (5) is automatically compensated between the first chain wheel (3) and the second chain wheel (4).
2. The agricultural grain scraper conveyor according to claim 1, wherein the upper pressing frame (8) is a bent rod located at the side of the conveying cabin (1), one end of the upper pressing frame (8) enters into the conveying cabin (1) from the feeding end of the conveying cabin (1) and is connected to the top end of the lower pressing frame (9), the other end of the upper pressing frame (8) extends to the middle of the conveying cabin (1) and is connected to the middle of the upper pressing plate (10), two ends of the upper pressing plate (10) extend from the top end of the upper pressing frame (8) to two ends of a chain link between the first chain wheel (3) and the second chain wheel (4) respectively, two ends of the upper pressing plate (10) are bent upwards, and two ends of the pressure regulating frame (11) are connected to the two upward bent parts of the two ends of the upper pressing plate (10) so that the pressure regulating frame (11) is located above the chain link between the first chain wheel (3) and the second chain wheel (4).
3. An agricultural grain scraper conveyor according to claim 2, characterized in that the length dimension of the load-carrying frame (16) corresponds to the length dimension of the pressure regulating frame (11), the load-carrying frame (16) being from the side of the second sprocket (4) to the side up to the first sprocket (3) along the side of the inner cavity of the conveyor cabin (1).
4. A grain scraper conveyor for agriculture according to claim 3, characterized in that the pressure regulating frame (11) and the load carrying frame (16) are both metal bars.
5. The agricultural grain scraper conveyor according to claim 4, wherein the scraping plate (6) is of an L-shaped bent plate structure, when the scraping plate (6) is transferred from the discharge end of the conveying cabin (1) to the feed end of the conveying cabin (1) along with the transmission chain (5), the L-shaped bent plate of the scraping plate (6) is oriented to the feed end of the conveying cabin (1), and when the scraping plate (6) is transferred from the feed end of the conveying cabin (1) to the discharge end of the conveying cabin (1) along with the transmission chain (5), the L-shaped bent plate of the scraping plate (6) is oriented to the discharge end of the conveying cabin (1).
6. The agricultural grain scraper conveyor according to claim 5, wherein a pair of auxiliary scraping plates (61) are welded on the outer wall surface of the scraping plate (6) along the length direction of the scraping plates, the structure of each auxiliary scraping plate (61) is consistent with that of the scraping plate (6), each auxiliary scraping plate (61) is also of an L-shaped bent plate structure, and the orientation of the L-shaped bent plate of each auxiliary scraping plate (61) is consistent with that of the corresponding L-shaped bent plate of the scraping plate (6).
7. The agricultural grain scraper conveyor according to claim 6, wherein the length dimension of the auxiliary scraper (61) is smaller than the scraper (6), so that a gap (62) for placing the pressure regulating frame (11) is left between both ends of the auxiliary scraper (61) and both ends of the scraper (6).
8. The agricultural grain scraper conveyor according to claim 7, wherein two sides of an inner cavity of the conveying cabin (1) are respectively provided with a set of automatic tightening mechanisms positioned at the outer ends of the two lower pressing frames (9), each automatic tightening mechanism comprises a pull shaft (17), a threaded seat (18), a tightening screw (19) and a rack gear assembly (20), the second chain wheel (4) is connected to the middle part of the pull shaft (17) through a bearing, pull holes (23) are formed in two ends of the pull shaft (17), threaded holes are formed in the threaded seats (18), the threaded seats (18) are fixed on two inner side walls of the conveying cabin (1), the tightening screw (19) is connected to the threaded seats (18) through threaded holes, a polished rod part of the tightening screw (19) is provided with a bolt cap, a part of the tightening screw (19) with the bolt cap is arranged in the pull holes (23) in a penetrating manner and used for limiting two ends of the pull shaft (17) in the conveying cabin (1), the rack gear assembly (20) comprises a bevel gear assembly (21) and a bevel gear (22) which is fixed on the bevel gear assembly (21) and the bevel gear assembly (22) is meshed with the bevel gear assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311291184.7A CN117682270B (en) | 2023-10-08 | 2023-10-08 | Agricultural grain scraper conveyor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311291184.7A CN117682270B (en) | 2023-10-08 | 2023-10-08 | Agricultural grain scraper conveyor |
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| CN117682270A CN117682270A (en) | 2024-03-12 |
| CN117682270B true CN117682270B (en) | 2024-06-04 |
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| Publication number | Publication date |
|---|---|
| CN117682270A (en) | 2024-03-12 |
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