Harvester rotating shaft transmission structure and harvester

Abstract

The utility model provides a harvester rotating shaft transmission structure and a harvester. The harvester rotating shaft transmission structure comprises an input wheel, a hoop and an adjusting component. The hoop and the adjusting component are arranged on the side, away from the connecting bearing, of the rotating shaft in a sleeving mode, the hoop can limit the adjusting component to the position which is spaced from the involute spline housing by a preset distance, and a third gap is formed between the hoop and the adjusting component; the adjusting component comprises a positioning part and an adjusting part; when the adjusting part is adjusted, the input wheel and the involute spline housing can move in the axis direction of the rotating shaft so as to adjust the position of the transmission face on the rotating shaft. The third gap is reserved in the axial direction, the tooth side gap of the involute spline can be made up, therefore, radial force and axial force generated by alternating loads in the working process are released, faults caused by clamping stagnation are avoided, meanwhile, by adjusting the adjusting part, the relative position between the positioning part and the input wheel can be adjusted, and then adjustment of the transmission face is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery and equipment, and in particular to a harvester rotary shaft transmission structure and a harvester. Background Art

[0002] The intermediate transmission shaft is an indispensable part of the harvester, which bears both torque and bending moment. At present, most of the intermediate transmission shafts adopt a flat key structure or an involute spline structure, as follows.

[0003] Figure 1-Figure 3 The present invention shows a structure in which an existing harvester rotating shaft adopts a flat key structure, and the existing rotating shaft transmission structure comprises an intermediate rotating shaft 1', a connecting bearing 2', an input wheel 3', a first output pulley 4', a second output pulley 5', and a third output pulley 6'; wherein, both ends of the intermediate rotating shaft 1' are connected to the vehicle body through the connecting bearing 2'; wherein, the input wheel 3', the first output pulley 4', and the second output pulley 5' are arranged at the first end of the intermediate rotating shaft 1'; specifically, the input wheel 3' is fixed to the intermediate rotating shaft 1' by a flat key 7', and torque transmission is achieved through the connection of the flat key 7'; the first output pulley 4' is fixed to the intermediate rotating shaft 1' by a flat key 7', and the second output pulley 5' is fixed to the input wheel 3'; in addition, a limiting structure of a clamp 8'+single bolt 9' is used to limit the axial direction of the intermediate rotating shaft 1'.

[0004] In actual use, the engine power inputs torque through the input wheel 3', and transmits power to the ear processing module (peeler) through the first output pulley 4' and the belt, transmits power to the stem processing module (chopper) through the second output pulley 5' and the belt, and transmits power to the ear picking module (cutting table rotating shaft) through the third output pulley 6' and the belt. That is, the intermediate rotating shaft 1' of the harvesting machinery bears the power input and output work of all working parts, and the transmitted torque is large. To ensure its reliability, the hoop 8' and the intermediate rotating shaft 1' adopt transitional fit, the flat key 7' and the intermediate rotating shaft 1' adopt transitional fit, and the input wheel 3' and the flat key 7' adopt transitional fit; however, this structure has the following shortcomings: the hoop 8' and the intermediate rotating shaft 1' adopt transitional fit, which makes it difficult to disassemble and assemble the input wheel 3', and the axial slip is difficult, and it is not convenient to adjust the transmission surface; in addition, the power transmission method using the flat key 7' is insufficient in power transmission, and often there will be abnormal wear and tear of the shaft and hub and the rolling key failure.

[0005] In order to improve the transmission force of the intermediate rotating shaft and facilitate the adjustment of the transmission surface, combined Figure 4 and Figure 5As shown, the existing one adopts a rotating shaft transmission structure with an involute spline structure, which can solve the shortcomings of the flat key structure to a certain extent; specifically, the difference from the above-mentioned rotating shaft transmission structure with a flat key structure is that: the input wheel 3' is fixed to the intermediate rotating shaft 1' through an involute spline 10', and the torque is transmitted through the involute spline sleeve 10'; in addition, the side of the input wheel 3' away from the second output pulley 3' is fixed to the intermediate rotating shaft 1' through an involute spline hoop 11'+double bolts 12', so that Axial limitation of the involute spline sleeve 10' is achieved; however, this connection method still has the following shortcomings: during the operation of the harvesting machinery, the intermediate rotating shaft that bears both torque and bending moment is subjected to repeated radial alternating loads, which causes axial force to be generated at the involute mating part. Long-term repeated impacts cause axial movement of the involute spline sleeve 10', which in turn causes serious deviations in the surface difference between the driving and driven wheels, and ultimately causes serious wear of the transmission belt; in addition, the involute spline sleeve 10' may also break due to fatigue; in addition, this structure is not convenient for adjusting the transmission surface.

[0006] Therefore, there is an urgent need for a harvester rotating shaft transmission structure and a harvester to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0007] The purpose of the present application is to provide a harvester rotating shaft transmission structure and a harvester, which can, to a certain extent, solve the technical problem that the main and driven wheel surface differences are serious due to the use of an involute spline structure in the rotating shaft transmission structure, which ultimately leads to serious wear of the transmission belt. In addition, it can also solve the problem that the existing structure is inconvenient to adjust the transmission surface.

[0008] The present application provides a harvester rotary shaft transmission structure; comprising a rotary shaft and a connecting bearing; the connecting bearing can suspend the connecting bearing sleeve to the vehicle body; the harvester rotary shaft transmission structure also includes an input wheel, a clamp and an adjusting member which are sleeved on the rotary shaft through an involute spline sleeve;

[0009] The hoop and the adjusting member are both sleeved on a side of the rotating shaft away from the connecting bearing, the hoop can limit the adjusting member to a position spaced a preset distance from the involute spline sleeve, and a third gap is provided between the hoop and the adjusting member;

[0010] The hoop and the adjusting member are both sleeved on a side of the rotating shaft away from the connecting bearing, and the hoop can limit the adjusting member to a position spaced a preset distance from the involute spline sleeve;

[0011] The adjusting member comprises a positioning portion and an adjusting portion; the positioning portion is sleeved on the rotating shaft and is spaced from the involute spline sleeve by a preset distance; the adjusting portion passes through the involute spline sleeve, the input wheel and the positioning portion in sequence;

[0012] When the adjusting portion is adjusted, the input wheel and the involute spline sleeve can move along the axial direction of the rotating shaft to adjust the position of the transmission surface of the input wheel on the rotating shaft.

[0013] In the above technical solution, further, the positioning part is a positioning plate;

[0014] A step is formed on the rotating shaft at a position a preset distance from the involute spline sleeve;

[0015] The clamp positions the positioning plate at the step.

[0016] In the above technical solution, further, the adjustment part includes a first bolt, a limit nut, a positioning nut and a locking nut;

[0017] The first bolt passes through the involute spline sleeve, the input wheel and the positioning plate in sequence;

[0018] The locking nut is threadedly connected to the first bolt and fixes the involute spline sleeve and the input wheel together;

[0019] The limiting nut and the positioning nut are respectively threadedly connected to two sides of the positioning plate to fix the positioning plate to the rotating shaft.

[0020] In the above technical solution, further, the input wheel and the involute spline sleeve are provided with light holes at corresponding positions for the first bolt to pass through, and the positioning plate is provided with mounting holes at positions corresponding to the light holes.

[0021] In the above technical solution, further, there is a first preset gap between the positioning plate and the rotating shaft, and there is a second preset gap between the first bolt and the mounting hole; the first preset gap is smaller than the second preset gap.

[0022] In the above technical solution, further, a plurality of the adjusting parts are provided, and the plurality of the adjusting parts are arranged at intervals along the circumferential direction of the positioning plate.

[0023] In the above technical solution, further, the input wheel and the involute spline sleeve are connected by a second bolt;

[0024] The input wheel and the involute spline sleeve are provided with second threaded holes at corresponding positions for the second bolt to pass through.

[0025] In the above technical solution, further, a plurality of the second bolts are provided, and the plurality of the second bolts are arranged at intervals along the circumference of the involute spline sleeve, and the plurality of the first bolts and the plurality of the second bolts are arranged alternately.

[0026] In the above technical solution, further, the third gap is set in the range of 0.3mm-0.7mm.

[0027] The present application also provides a harvester, comprising the above-mentioned harvester rotating shaft transmission structure.

[0028] Compared with the prior art, this application has the following beneficial effects:

[0029] The present application provides a harvester rotary shaft transmission structure; comprising a rotary shaft and a connecting bearing; the connecting bearing can suspend the connecting bearing sleeve to the vehicle body; the harvester rotary shaft transmission structure also includes an input wheel, a clamp and an adjusting member which are sleeved on the rotary shaft through an involute spline sleeve;

[0030] The hoop and the adjusting member are both sleeved on a side of the rotating shaft away from the connecting bearing, the hoop can limit the adjusting member to a position spaced a preset distance from the involute spline sleeve, and a third gap is provided between the hoop and the adjusting member;

[0031] The adjusting member comprises a positioning portion and an adjusting portion; the positioning portion is sleeved on the rotating shaft and is spaced from the involute spline sleeve by a preset distance; the adjusting portion passes through the involute spline sleeve, the input wheel and the positioning portion in sequence;

[0032] When the adjusting portion is adjusted, the input wheel and the involute spline sleeve can move along the axial direction of the rotating shaft to adjust the position of the transmission surface of the input wheel on the rotating shaft.

[0033] In summary, compared with the traditional structure in which the involute spline sleeve and the clamp are combined, the present application has the following advantages: the traditional locking and positioning method of the involute spline clamp cannot adapt to the rotating shaft that bears both torque and bending moment in the harvesting machinery. The long-term and repeated alternating load impact of the harvester causes the involute spline to generate axial force, resulting in axial movement of the spline sleeve or fatigue fracture of the spline sleeve. The third gap reserved in the axial direction of this scheme can make up for the gap on the side of the involute spline teeth, thereby releasing the radial force and axial force generated by the alternating load during the working process, avoiding the occurrence of faults caused by jamming. At the same time, by adjusting the adjustment part, the relative position between the positioning part and the input wheel can be adjusted, thereby realizing the adjustment of the transmission surface. The transmission surface can be adjusted quickly and conveniently, reducing labor intensity and improving production efficiency.

[0034] The present application also provides a harvester, comprising the above-mentioned harvester rotating shaft transmission structure, and thus has all the beneficial effects of the harvester rotating shaft transmission structure, which will not be elaborated in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 It is a harvester rotating shaft transmission structure in the prior art;

[0037] Figure 2 for Figure 1 Side view at A in FIG.

[0038] Figure 3 for Figure 2 BB section view in;

[0039] Figure 4 It is another harvester rotating shaft transmission structure in the prior art;

[0040] Figure 5 for Figure 4 Partial structure diagram in ;

[0041] Figure 6 A cross-sectional view of a harvester rotary shaft transmission structure provided in the present application;

[0042] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0043] Figure 8 A schematic diagram of a structure of a harvester rotating shaft transmission structure provided in this application;

[0044] Fig. 9 for Figure 8 Enlarged view of point D in the middle;

[0045] Fig.10 This is a schematic structural diagram of an input wheel and a rotating shaft in a harvester rotating shaft transmission structure provided by the present application;

[0046] Fig.11 for Fig.10 Side view of.

[0047] Figure markings: 1'-intermediate rotating shaft; 2'-connecting bearing; 3'-input wheel; 4'-first output pulley; 5'-second output pulley; 6'-third output pulley; 7'-flat key; 8'-hoop; 9'-single bolt; 10'-involute spline sleeve; 11'-involute spline hoop; 12'-double bolt; 1-rotating shaft; 2-connecting bearing; 3-input wheel; 4-hoop; 5-adjusting member; 6-involute spline sleeve; 7-positioning plate; 8-step; 9-first bolt; 10-limiting nut; 11-positioning nut; 12-locking nut; 13-second bolt; 14-third bolt; 15-first output pulley; 16-second output pulley; 17-third output pulley; 18-fourth bolt; 19-adjusting part. DETAILED DESCRIPTION

[0048] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0049] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0050] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0051] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0052] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0053] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0054] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0055] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0056] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0057] Embodiment 1

[0058] Combine the following Figure 6-Figure 11 A harvester rotating shaft transmission structure provided by the present application is described in detail.

[0059] As is known to all, the harvester rotary shaft transmission structure includes a rotary shaft 1, an input wheel 3, a clamp 4 and a connecting bearing 2. Figure 6 and Figure 8 As shown, the rotating shaft 1 preferably extends along the width direction of the harvester body. The input wheel 3 is sleeved on one end of the rotating shaft 1 along its length direction, and the input wheel 3 and the rotating shaft 1 are connected by an involute spline sleeve 6; Figure 6 and Figure 8 As shown, the input wheel 3 is sleeved on the left side of the rotating shaft 1. Furthermore, the side wall of the input wheel 3 is formed as a transmission surface. The power of the engine is first transmitted to the input wheel 3, and the input wheel 3 transmits the force to the involute spline sleeve 6, and finally the involute spline sleeve 6 is connected to the rotating shaft 1 to realize the transmission of torque.

[0060] Furthermore, the connecting bearing 2 is connected to the vehicle body of the harvester, and the connecting bearing 2 is used to hang the rotating shaft 1 on the vehicle body of the harvester.

[0061] Furthermore, a harvester rotating shaft transmission structure also includes a first output pulley 15, a second output pulley 16 and a third output pulley 17. The first output pulley 15, the second output pulley 16 and the third output pulley 17 are respectively mounted on the rotating shaft 1 through flat keys.

[0062] In the actual working process, the first output pulley 15 is connected to the stalk processing module through a belt, and the power is transmitted to the stalk processing module through the first output pulley 15. The stalk processing module here refers to the driving wheel of the chopper, and the chopper is used to chop corn stalks; it is worth noting that the stalk processing module is not within the scope of protection of this application and is also understandable to those skilled in the art, so it is not elaborated too much here. The second output pulley 16 is connected to the ear processing module through a belt, and the power is transmitted to the ear processing module through the second output pulley 16. The ear processing module here refers to the driving wheel of the peeling machine, and the peeling machine is used to peel corn; it is worth noting that the ear processing module is not within the scope of protection of this application and is also understandable to those skilled in the art, so it is not elaborated too much here. The third output pulley 17 is connected to the ear picking module through a belt, and the power is transmitted to the ear picking module through the third output pulley 17. The ear picking module here refers to the rotating shaft in the middle of the cutting table, and the cutting table is used to harvest corn; it is worth noting that the ear picking module is not within the scope of protection of this application and is also understandable to those skilled in the art, so it is not elaborated too much here.

[0063] That is, the rotating shaft 1 of the present application is supported by connecting bearings 2 at both ends, and input and output pulleys are respectively provided at both ends of the connecting bearings 2. The engine power is transmitted to the rotating shaft 1 through the input pulley 3, and the power is transmitted to the fruit cluster processing module, the stem processing module and the ear picking module through the first output pulley 15, the second output pulley 16 and the third output pulley 17 respectively.

[0064] See also Figure 6 Combined with Figure 7 As shown, the harvester rotating shaft transmission structure provided in the present application also includes an input wheel 3, a clamp 4 and an adjusting component 5.

[0065] Specifically, combined Figure 6 As shown, the connecting bearing 2 is located on the right side of the input wheel 3, and the clamp 4 and the adjusting member 5 are located on the left side of the input wheel 3; further, the clamp 4 and the adjusting member 5 are both mounted on the side of the rotating shaft 1 away from the connecting bearing 2, and further, the adjusting member 5 is located between the clamp 4 and the input wheel 3.

[0066] Specifically, the hoop 4 can limit the adjusting member 5 to a position at a preset distance from the involute spline sleeve 6; further, the adjusting member 5 includes a positioning portion and an adjusting portion 19; the positioning portion is sleeved on the rotating shaft 1 and is spaced a preset distance from the involute spline sleeve 6; the adjusting portion 19 passes through the involute spline sleeve 6, the input wheel 3 and the positioning portion in sequence; Figure 7 As shown, there is a preset distance between the adjusting member 5 and the involute spline sleeve 6; wherein, there is a third gap between the clamp 4 and the adjusting member 5. Furthermore, the clamp 4 includes an open circular ring, a lug plate and a third bolt 14, wherein two lug plates are provided, and the two lug plates are respectively provided at the open ends of the open circular ring, and the third bolt 14 passes through the two lug plates in sequence. During installation, first loosen the two lug plates with the third bolt 14, then set the open circular ring at a preset position on the rotating shaft 1, and finally use the third bolt 14 to lock the two lug plates to fix the clamp 4 to the rotating shaft 1. Preferably, the third bolt 14 is a single bolt or a double bolt.

[0067] In actual use, the adjusting member 5 is used to realize the positioning and locking of the input wheel 3 and the involute spline sleeve 6 to prevent the involute spline sleeve 6 from being greatly displaced on the rotating shaft 1; further, the engine is connected to the input wheel 3 through a belt. When the engine is started, the involute spline sleeve 6 will be slightly displaced in the axial direction of the rotating shaft 1 (that is, the involute spline sleeve 6 will have a slight movement on the axis) under the drive of the belt. Since the positioning part is connected to the involute spline sleeve 6 through the adjusting part 19, the positioning part will also be slightly displaced under the drive of the involute spline sleeve 6; if there is no reserved space between the clamp 4 and the positioning part Gap, that is, the positioning part has no movement space, then the positioning part will be broken due to the pulling of the displacement movement of the involute spline sleeve 6, and the present application reserves a third gap between the clamp 4 and the adjusting member 5, that is, a certain displacement space is provided for the positioning part, then when the involute spline sleeve 6 is slightly displaced in the axial direction, the positioning part can move along with the movement of the involute spline sleeve 6 in the third gap; therefore, the setting of the third gap in the present application makes up for the displacement difference caused by the small movement of the involute spline sleeve 6, releases the axial force generated by the alternating load during the working process, avoids the phenomenon of jamming of the positioning part, and thus avoids the breakage of the adjusting part 19.

[0068] It is worth noting that the third gap is set in the range of 0.3mm-0.7mm, preferably set to 0.5mm, that is, the third gap is a relatively small gap; in addition, considering that the involute spline sleeve 6 needs to be fixed to the rotating shaft 1, the positioning part is still fixed to the rotating shaft 1 by the clamp 4.

[0069] In addition, when it is necessary to adjust the position of the transmission surface on the rotating shaft 1, that is, it is necessary to adjust the position of the involute spline sleeve 6 on the rotating shaft 1, the adjusting portion 19 can be adjusted so that the involute spline sleeve 6 and the input wheel 3 are simultaneously moved to the left or forward along the axial direction of the rotating shaft 1, thereby achieving adjustment of the transmission surface.

[0070] In summary, compared with the traditional structure in which the involute spline sleeve and the clamp are combined, the present application has the following advantages: the traditional locking and positioning method of the involute spline clamp cannot adapt to the rotating shaft that bears both torque and bending moment in the harvesting machinery. The long-term and repeated alternating load impact of the harvester causes the involute spline to generate axial force, resulting in axial movement of the spline sleeve or fatigue fracture of the spline sleeve. The third gap reserved in the axial direction of the present solution can make up for the slight displacement of the involute spline sleeve along the axial direction, thereby releasing the axial force generated by the alternating load during the working process and avoiding the occurrence of faults caused by jamming. At the same time, by adjusting the adjusting part 19, the relative position between the positioning part and the input wheel 3 can be adjusted, thereby realizing the adjustment of the transmission surface. The transmission surface can be adjusted quickly and conveniently, reducing labor intensity and improving production efficiency.

[0071] In this embodiment, combined Figure 7 As shown, the positioning portion is a positioning plate 7; combined Figure 8 As shown, a step 8 is formed on the rotating shaft at a preset distance from the involute spline sleeve 6; specifically, the rotating shaft 1 includes a first rotating shaft portion and a second rotating shaft portion connected to the first rotating shaft portion, and the diameter of the first rotating shaft portion is larger than the diameter of the first rotating shaft portion, so that a step 8 is formed at the connection between the first rotating shaft portion and the second rotating shaft portion; further, the involute spline sleeve 6 is sleeved on the first rotating shaft portion, the positioning plate 7 is sleeved on the second rotating shaft portion, and the positioning plate 7 is attached to the portion of the first rotating shaft portion that protrudes (higher than) the second rotating shaft portion.

[0072] Furthermore, the clamp 4 is arranged on the side of the positioning plate 7 away from the involute spline sleeve 6, so that the clamp 4 squeezes the positioning plate 7 to the first rotating shaft part, and then uses the side edge of the first rotating shaft part and the clamp 4 to lock and position the positioning plate 7 on the second rotating shaft part.

[0073] In addition, a gap of 0.5 mm is formed between the clamp 4 and the positioning plate 7; it is worth noting that this gap of 0.5 mm is a very small gap, which will not affect the axial locking positioning of the clamp 4 on the positioning plate 7.

[0074] In addition, the involute spline sleeve 6 is sleeved on the first rotating shaft portion, and a preset distance is formed between the involute spline sleeve 6 and the positioning plate 7. Specifically, the setting of the preset distance provides space for the movement of the involute spline sleeve 6, ensuring that the involute spline sleeve 6 can move on the first rotating shaft portion, thereby realizing the adjustment of the transmission surface.

[0075] In this embodiment, combined Figure 7 As shown, the adjusting portion 19 includes a first bolt 9 , a limiting nut 10 , a positioning nut 11 and a locking nut 12 .

[0076] Specifically, the first bolt 9 passes through the involute spline sleeve 6 , the input wheel 3 and the positioning plate 7 in sequence; the screw head end of the first bolt 9 abuts against a side of the involute spline sleeve 6 facing away from the positioning plate 7 .

[0077] Specifically, combined Figure 7 As shown, the locking nut 12 is threadedly connected to the first bolt 9 and fixes the involute spline sleeve 6 and the input wheel 3 together; the limiting nut 10 and the positioning nut 11 are respectively threadedly connected to the two sides of the positioning plate 7 to fix the positioning plate 7 to the rotating shaft 1.

[0078] Furthermore, a plurality of adjusting portions 19 are provided, and the plurality of adjusting portions 19 are arranged at intervals along the circumferential direction of the positioning plate 7. Fig.10 As shown, four adjusting portions 19 are provided, and the four adjusting portions 19 are arranged at intervals along the circumferential direction of the positioning plate 7, so that the circumferential force of the positioning plate 7 is more balanced.

[0079] Furthermore, on the inner side of the positioning plate 7 (the side close to the input wheel 3), four positioning nuts 11 are threadedly connected to the screw rod of the first bolt 9 and fit with the end face of the positioning plate 7, so that the inner end face of the positioning plate 7 is completely fitted with the end face of the step 8 (the end face of the first rotating part), thereby preventing the positioning plate 7 from being skewed and causing the first bolt 9 to break; the four limit nuts 10 on the outer side of the positioning plate 7 can be self-locking nuts and fit with the end face without tightening, so as to facilitate the involute spline sleeve 6 to move slightly in the circumferential direction to make up for the involute spline tooth side fitting clearance.

[0080] Furthermore, there is no need to tighten the limit nut 10 because of the following considerations: since the input wheel 3 and the involute spline sleeve 6 are fixed together by the locking nut 12, when the engine drives the input wheel 3 to rotate through the belt, the input wheel 3 and the involute spline sleeve 6 will inevitably have a slight displacement in the axial direction of the rotating shaft 1. Here, the limit nut 10 does not need to tighten the positioning plate 7, so that the first screw can coordinate with the input wheel 3 and the involute spline sleeve 6 to have a slight displacement when the input wheel 3 and the involute spline sleeve 6 are displaced in the axial direction, that is, to a certain extent, the axial force generated by the alternating load during the working process is also released.

[0081] Preferably, the first bolt 9 is a hexagonal head bolt of M10X130-10.9, and the locking nut 12 is a hexagonal flange nut of GBT6177.1-M10-10.

[0082] During actual use, when it is necessary to adjust the position of the transmission surface on the rotating shaft 1, first screw the limit nut 10 and the positioning nut 11 so that the limit nut 10 and the positioning nut 11 do not position the positioning plate 7, so that the first bolt 9 can move on the positioning plate 7. Note that at this time, the locking nut 12 has been locking the input wheel 3 and the involute spline sleeve 6; then move the input wheel 3 and the involute spline sleeve 6 to the appropriate position, that is, move the transmission surface to the appropriate position; finally, screw the limit nut 10 and the positioning nut 11 again so that the limit nut 10 and the positioning nut 11 lock the positioning plate 7.

[0083] In this embodiment, the input wheel 3 and the involute spline sleeve 6 are provided with light holes at corresponding positions for the first bolt 9 to pass through, and the positioning plate 7 is provided with mounting holes at positions corresponding to the light holes.

[0084] Preferably, the diameter of the mounting hole is 12 mm.

[0085] Preferably, the mounting hole is a circular hole or an arc-shaped long hole.

[0086] The reason why the position where the input wheel 3 and the involute spline sleeve 6 pass through the first bolt 9 is opened as a light hole instead of a threaded hole in the present application is that the factors are as follows: the screw rod of the first bolt 9 has threads, and the positioning nut 11 and the locking nut 12 are threadedly connected to the screw rod. Therefore, when the positioning nut 11 and the locking nut 12 are used to vertically position the positioning plate 7 on the rotating shaft 1, the positioning nut 11 and the locking nut 12 and the screw rod will rotate relative to each other, that is, the screw rod of the first bolt 9 may move along the axial direction of the rotating shaft 1; if the input wheel 3 and the involute spline sleeve 6 are If a threaded hole is opened at the position where the first bolt 9 passes through, the input wheel 3 and the involute spline sleeve 6 may move in the axial direction due to the axial movement of the screw rod of the first bolt 9, thereby changing the position of the already set transmission surface. Based on the above considerations, the present application opens a smooth hole at the position where the input wheel 3 and the involute spline sleeve 6 pass through the first bolt 9. Therefore, even if the screw rod of the first bolt 9 moves in the axial direction, it will not drive the position of the input wheel 3 and the involute spline on the axis, thereby not changing the position of the already set transmission surface on the rotating shaft 1.

[0087] In this embodiment, there is a first preset gap between the positioning plate 7 and the rotating shaft 1, and there is a second preset gap between the first bolt 9 and the mounting hole; the first preset gap is smaller than the second preset gap.

[0088] Preferably, the first preset gap is 0.2 mm, and preferably, the second preset gap is 2 mm.

[0089] The reason why the first preset gap is set to be smaller than the second preset gap in the present application is specifically considered as follows: since the input wheel 3 and the involute spline sleeve 6 are fixed together by the locking nut 12, and since there is a gap between the involute spline sleeve 6 and the rotating shaft 1, and since the positioning plate 7 and the input wheel 3 are connected by the adjusting portion 19; therefore, when the engine drives the input wheel 3 to rotate through the belt, the input wheel 3 and the involute spline sleeve 6 will produce centrifugal motion, that is, they will move away from the rotating shaft 1 in the radial direction, and at the same time, the positioning plate 7 and the adjusting portion 19 will simultaneously produce centrifugal motion; if the first preset gap is larger than the second preset gap, that is, the centrifugal force generated by the positioning plate 7 will be larger than the centrifugal force generated by the adjusting portion 19, then the adjusting portion 19 will break; therefore, the present application sets the first preset gap to be smaller than the second preset gap, which will ensure that the centrifugal force generated by the positioning plate 7 is smaller than the centrifugal force generated by the adjusting portion 19, and can prevent the adjusting portion 19 from breaking to a certain extent.

[0090] In this embodiment, combined Fig.10As shown, the input wheel 3 and the involute spline sleeve 6 are connected by a second bolt 13, so that the input wheel 3 and the involute spline sleeve 6 are assembled into an integrated structure. Furthermore, the internal splines of the involute spline sleeve 6 cooperate with the external splines of the rotating shaft 1 to achieve power transmission.

[0091] Specifically, the input wheel 3 and the involute spline sleeve 6 are provided with second threaded holes at corresponding positions through which the second bolts 13 can pass.

[0092] Furthermore, the second bolt 13 is a hexagonal head bolt with a model of GBT5783-M10x40-10.9; further, a spring washer is provided between the hexagonal head bolt and the involute spline sleeve 6.

[0093] In this embodiment, combined Fig.10 As shown, a plurality of second bolts 13 are provided, and the plurality of second bolts 13 are arranged at intervals along the circumference of the involute spline sleeve 6, and the plurality of first bolts 9 are arranged alternately with the plurality of second bolts 13. The alternate arrangement of the first bolts 9 and the second bolts 13 makes the circumferential force of the involute spline sleeve 6 more balanced on the one hand, and on the other hand, the layout is more reasonable and will not cause interference problems.

[0094] In addition, the input wheel and the second output wheel are connected by a fourth bolt 18 .

[0095] Embodiment 2

[0096] The present application also provides a harvester, comprising the above-mentioned harvester rotating shaft transmission structure, and thus has all the beneficial effects of the harvester rotating shaft transmission structure, which will not be elaborated in detail here.

[0097] Embodiment 3

[0098] This embodiment differs from the first embodiment in the following aspects:

[0099] (1) The input wheel sleeve is arranged at one end of the rotating shaft along its length direction, and the input wheel and the rotating shaft are connected by a rectangular spline sleeve.

[0100] (2) The present application can be applied to the shaft end fixation of the involute spline sleeve. When used for the shaft end, the locking clamp is replaced with a T-sleeve + bolt spring washer for axial tightening, wherein a 0.5 mm gap is reserved between the T-sleeve and the positioning plate, and a threaded hole is provided at the center of the rotating shaft. The bolt + spring washer is installed on the center hole of the shaft and fits tightly with the outer end surface of the T-sleeve to achieve axial limitation.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A harvester rotary shaft transmission structure; comprising a rotary shaft and a connecting bearing; the connecting bearing can suspend the connecting bearing sleeve to the vehicle body; characterized in that: The harvester rotating shaft transmission structure comprises an input wheel, a clamp and an adjusting member which are sleeved on the rotating shaft through an involute spline sleeve; The hoop and the adjusting member are both sleeved on a side of the rotating shaft away from the connecting bearing, the hoop can limit the adjusting member to a position spaced a preset distance from the involute spline sleeve, and a third gap is provided between the hoop and the adjusting member; The adjusting member comprises a positioning portion and an adjusting portion; the positioning portion is sleeved on the rotating shaft and is spaced from the involute spline sleeve by a preset distance; the adjusting portion passes through the involute spline sleeve, the input wheel and the positioning portion in sequence; When the adjusting portion is adjusted, the input wheel and the involute spline sleeve can move along the axial direction of the rotating shaft to adjust the position of the transmission surface of the input wheel on the rotating shaft.

2. The harvester rotating shaft transmission structure according to claim 1, characterized in that: The positioning part is a positioning plate; A step is formed on the rotating shaft at a position a preset distance from the involute spline sleeve; The clamp positions the positioning plate at the step.

3. The harvester rotating shaft transmission structure according to claim 2, characterized in that: The adjusting part comprises a first bolt, a limiting nut, a positioning nut and a locking nut; The first bolt passes through the involute spline sleeve, the input wheel and the positioning plate in sequence; The locking nut is threadedly connected to the first bolt and fixes the involute spline sleeve and the input wheel together; The limiting nut and the positioning nut are respectively threadedly connected to two sides of the positioning plate to fix the positioning plate to the rotating shaft.

4. The harvester rotating shaft transmission structure according to claim 3, characterized in that: The input wheel and the involute spline sleeve are provided with light holes at corresponding positions through which the first bolt can pass, and the positioning plate is provided with mounting holes at positions corresponding to the light holes.

5. The harvester rotating shaft transmission structure according to claim 4, characterized in that: There is a first preset gap between the positioning plate and the rotating shaft, and there is a second preset gap between the first bolt and the mounting hole; the first preset gap is smaller than the second preset gap.

6. The harvester rotating shaft transmission structure according to claim 3, characterized in that: A plurality of the adjusting parts are provided, and the plurality of the adjusting parts are arranged at intervals along the circumferential direction of the positioning plate.

7. The harvester rotating shaft transmission structure according to claim 6, characterized in that: The input wheel and the involute spline sleeve are connected by a second bolt; The input wheel and the involute spline sleeve are provided with second threaded holes at corresponding positions for the second bolt to pass through.

8. The harvester rotating shaft transmission structure according to claim 7, characterized in that: A plurality of the second bolts are provided, and the plurality of the second bolts are arranged at intervals along the circumferential direction of the involute spline sleeve, and the plurality of the first bolts and the plurality of the second bolts are arranged alternately.

9. The harvester rotating shaft transmission structure according to claim 1, characterized in that: The third gap is set in the range of 0.3mm-0.7mm.

10. A harvester, characterized in that: It comprises the harvester rotating shaft transmission structure as described in any one of claims 1-9.

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