Gearbox for threshing cylinder of large multipurpose harvester

Abstract

The invention discloses a gearbox for a threshing cylinder of a large multipurpose harvester, and belongs to the technical field of gearboxes, the gearbox comprises a box body, a bearing seat and an output flange, the bearing seat is connected with the box body through a bolt, the output flange is clamped on the bearing seat, an input shaft and a spline shaft are respectively arranged in the box body, and the input shaft is connected with the spline shaft. A bearing seat is arranged on the spline shaft, an output shaft is arranged in the bearing seat, the spline shaft is located above the input shaft, the input shaft and the output shaft are coaxial, and the input shaft is arranged in the output shaft through a bearing. The shifting fork connector drives the sliding gear to move rightwards, namely, the shifting fork connector drives the sliding gear to move rightwards, and the shifting fork connector drives the sliding gear to move leftwards, so that different power output effects are achieved, the disengaging device can operate at different rotating speeds, the problem of single rotating speed of the disengaging roller is greatly solved, and the applicability of the machine is effectively improved; and the use requirements on machinery are met.

Description

Technical Field

[0001] The invention relates to the technical field of gearboxes, in particular to a gearbox for a threshing drum of a large multi-purpose harvester. Background Art

[0002] As the trend of land concentration in the country's agricultural areas becomes more and more obvious, and the country pays more and more attention to agricultural land cultivation, the trend of large-scale farm economy becomes more and more obvious, which requires agricultural machinery to develop in the direction of large-scale and multi-purpose, which is consistent with the trend of international agricultural machinery. At this stage, domestic agricultural machinery is generally a single harvesting machinery, which is directly connected to the fixed shaft after being separated from the drum and cannot be adjusted in speed. Different speeds correspond to different crop varieties. In this case, only specific crops can be harvested, so the use of the device is greatly restricted. For this reason, a gearbox for the threshing drum of a large multi-purpose harvester is proposed. Summary of the invention

[0003] The object of the present invention is to provide a gearbox for a large multi-purpose harvester threshing drum to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a gearbox for a large multi-purpose harvester threshing drum, comprising a housing, a bearing seat and an output flange, wherein the bearing seat is connected to the housing by bolts, the output flange is clamped on the bearing seat, an input shaft and a spline shaft are respectively installed in the housing, and an output shaft is installed in the bearing seat;

[0005] Wherein, the spline shaft is located above the input shaft, the input shaft is coaxial with the output shaft, and the input shaft is installed in the output shaft through a bearing.

[0006] As a further preferred embodiment of the present technical solution: a protective shell is formed by the box body, the bearing seat and the output flange, thereby protecting the components installed inside the protective shell.

[0007] As a further preferred embodiment of the technical solution: it also includes a shift fork, wherein a shift fork joint and a shift fork rod are respectively installed at both ends of the shift fork, a sliding gear is installed on the input shaft, and the shift fork rod drives the shift fork joint through the shift fork;

[0008] Among them, the fork joint is installed in the sliding gear, the input shaft is provided with an external spline, the sliding gear is provided with an internal spline, the input shaft and the sliding gear are assembled through the spline, and the linkage operation of the input shaft is realized through the above arrangement, and the sliding gear is adjusted and operated under the action of the fork joint.

[0009] As a further preferred embodiment of the technical solution: a spacer is installed on the spline shaft, a large gear and a small gear are installed on the spline shaft and on both sides of the spacer, and the small gear and the large gear are separated by the spacer;

[0010] Among them, the sliding gear is provided with teeth arranged at equal distances, and the large gear is meshed with the sliding gear, and the large gear is driven by the above arrangement.

[0011] As a further preferred embodiment of the present technical solution: both ends of the output shaft are respectively provided with external splines and equidistantly arranged teeth, the output flange is provided with internal splines, the output flange and the output shaft are assembled through splines, and the end of the output shaft away from the output flange is meshed with the pinion gear, and the output flange is supported and the pinion gear is driven through the above arrangement.

[0012] As a further preferred embodiment of the technical solution: the output shaft is provided with equidistantly arranged teeth at one end away from the output flange, and the equidistantly arranged teeth inside the output shaft are matched with the equidistantly arranged teeth outside the sliding gear, and the linkage operation of the sliding gear and the output shaft is achieved through the above arrangement.

[0013] As a further preferred embodiment of the present technical solution: the input shaft is installed in the housing through a bearing, a skeleton seal is installed in the housing and on one side of the bearing, the input shaft passes through the skeleton seal, and the skeleton seal prevents leakage of lubricating oil and prevents external contaminants from entering the interior of the machine;

[0014] Among them, two shaft retaining rings are symmetrically installed in the box body and on both sides of the bearing, and a hole retaining ring is installed in the box body and on the side of the skeleton seal away from the bearing. The hole retaining ring is arranged to fix the axial movement of the parts, and the shaft retaining ring is used to prevent unnecessary axial movement of the bearing.

[0015] As a further preferred embodiment of the present technical solution: the spline shaft is installed in the box body through two bearings, and two blind covers are symmetrically installed in the box body and located at both ends of the spline shaft;

[0016] Wherein, two hole retaining rings are symmetrically installed in the box body and on the repelling side of the two bearings, and the hole retaining rings are arranged to fix the axial movement of the parts.

[0017] As a further preferred embodiment of the present technical solution: the output shaft is installed in the bearing seat through two bearings, two hole retaining rings are symmetrically installed in the bearing seat and on one side adjacent to the two bearings, and a shaft retaining ring is installed in the bearing seat and on the side close to the output flange. The hole retaining ring is provided to fix the axial movement of the components, and the shaft retaining ring is used to prevent unnecessary axial movement of the bearings.

[0018] As a further preferred embodiment of the technical solution: two eccentric pins are symmetrically installed on the box body and on both sides of the fork rod, and a transition sleeve is installed on the box body and on the side of the box body away from the bearing seat, and the operating range of the fork rod is limited by the two eccentric pins.

[0019] As a further preferred embodiment of the technical solution: it also includes a pressure plate, which is attached to the side of the output flange away from the bearing seat through the output shaft by bolts, and a skeleton seal is installed on the side of the bearing seat close to the output flange, which prevents lubricating oil leakage and prevents external contaminants from entering the interior of the machine.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention may include two power transmission routes, namely route 1 in which the fork joint drives the sliding gear to move to the right and route 2 in which the fork joint drives the sliding gear to move to the left, thereby achieving different power output effects, and then the disengagement device can operate at different speeds, thereby greatly solving the problem of the single speed of the disengagement drum, thereby effectively improving the applicability and applicability of the machine and meeting the use requirements of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a gearbox for a large multi-purpose harvester threshing drum of the present invention;

[0023] Figure 2 It is a schematic diagram of the first cross-sectional structure of a gearbox for a large multi-purpose harvester threshing drum of the present invention;

[0024] Figure 3 It is a second cross-sectional structural schematic diagram of a gearbox for a large multi-purpose harvester threshing drum of the present invention;

[0025] Figure 4 It is a third structural schematic diagram of a gearbox for a large multi-purpose harvester threshing drum of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the internal components of a box body in a gearbox for a large multi-purpose harvester threshing drum of the present invention;

[0027] Figure 6 The invention discloses a schematic diagram of the installation structure of a housing, a bearing seat and an output flange in a gearbox for a large-scale multi-purpose harvester threshing drum.

[0028] In the figure: 1. housing; 2. bearing seat; 3. output flange; 4. output shaft; 5. input shaft; 6. spline shaft; 7. spacer; 8. large gear; 9. small gear; 10. sliding gear; 11. shift fork; 12. shift fork joint; 13. shift fork rod; 14. eccentric pin shaft; 15. transition sleeve; 16. pressure plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 6 The present invention provides a technical solution: a gearbox for a large multi-purpose harvester threshing drum, comprising a housing 1, a bearing seat 2 and an output flange 3, wherein the bearing seat 2 is connected to the housing 1 by bolts, the output flange 3 is clamped on the bearing seat 2, an input shaft 5 and a spline shaft 6 are respectively installed in the housing 1, and an output shaft 4 is installed in the bearing seat 2;

[0032] The spline shaft 6 is located above the input shaft 5 , the input shaft 5 is coaxial with the output shaft 4 , and the input shaft 5 is installed in the output shaft 4 through a bearing.

[0033] In this embodiment, specifically: a protective shell is formed by the housing 1, the bearing seat 2 and the output flange 3 to protect the components installed inside, and the main operation effect is achieved by connecting the input shaft 5 and the output shaft 4.

[0034] In this embodiment, specifically: it also includes a shift fork 11, and a shift fork joint 12 and a shift fork rod 13 are respectively installed at both ends of the shift fork 11. A sliding gear 10 is installed on the input shaft 5, and the shift fork joint 12 is driven by the shift fork rod 13 through the shift fork 11;

[0035] Among them, the fork joint 12 is installed in the sliding gear 10, the input shaft 5 is provided with an external spline, and the sliding gear 10 is provided with an internal spline. The input shaft 5 and the sliding gear 10 are assembled through the splines. Through the above settings, the linkage operation of the input shaft 5 is realized, and the sliding gear 10 is adjusted and operated under the action of the fork joint 12.

[0036] In this embodiment, specifically: a spacer 7 is installed on the spline shaft 6, and a large gear 8 and a small gear 9 are installed on the spline shaft 6 and on both sides of the spacer 7, respectively. The spacer 7 is used to separate the small gear 9 and the large gear 8, so as to avoid mutual influence between the two during operation;

[0037] The sliding gear 10 is provided with teeth arranged at equal distances, and the large gear 8 is meshed with the sliding gear 10 . The above arrangement is used to drive the large gear 8 .

[0038] In this embodiment, specifically: both ends of the output shaft 4 are respectively provided with external splines and equidistantly arranged teeth, the output flange 3 is provided with internal splines, the output flange 3 and the output shaft 4 are assembled through splines, and the end of the output shaft 4 away from the output flange 3 is meshed with the pinion 9. Through the above arrangement, on the one hand, it is used to support the output flange 3, and on the other hand, it is used to drive the pinion 9, thereby realizing the linkage operation of the pinion 9.

[0039] In this embodiment, specifically: the output shaft 4 is provided with equidistantly arranged teeth at one end away from the output flange 3, and the equidistantly arranged teeth inside the output shaft 4 are adapted to the equidistantly arranged teeth outside the sliding gear 10, and the linkage operation of the sliding gear 10 and the output shaft 4 is realized through the above arrangement;

[0040] The teeth arranged equidistantly in the output shaft 4 can be used as splines.

[0041] In this embodiment, specifically: it also includes a pressure plate 16, which is attached to the side of the output flange 3 away from the bearing seat 2 through the output shaft 4 by bolts, and a skeleton seal is installed on the side of the bearing seat 2 close to the output flange 3. The skeleton seal is set to prevent lubricating oil leakage and prevent external contaminants from entering the interior of the machine.

[0042] Example 2

[0043] A gearbox for a large multi-purpose harvester threshing drum, wherein an input shaft 5 is installed in a housing 1 through a bearing, a skeleton seal is installed in the housing 1 and on one side of the bearing, and the input shaft 5 passes through the skeleton seal, and the skeleton seal is used to prevent lubricating oil leakage and external pollutants from entering the interior of the machine;

[0044] Among them, two shaft retaining rings are symmetrically installed in the box body 1 and on both sides of the bearing, and a hole retaining ring is installed in the box body 1 and on the side of the skeleton seal away from the bearing. The hole retaining ring is used to fix the axial movement of the parts, and the shaft retaining ring is used to prevent unnecessary axial movement of the bearing, thereby ensuring the stability and reliability of the entire transmission system.

[0045] In this embodiment, specifically: the spline shaft 6 is installed in the box body 1 through two bearings, and two blind covers are symmetrically installed in the box body 1 and at both ends of the spline shaft 6;

[0046] Among them, two hole retaining rings are symmetrically installed in the box body 1 and on the repelling side of the two bearings. The hole retaining rings are used to fix the axial movement of the parts.

[0047] In this embodiment, specifically: the output shaft 4 is installed in the bearing seat 2 through two bearings, two hole retaining rings are symmetrically installed in the bearing seat 2 and on one side adjacent to the two bearings, and a shaft retaining ring is installed in the bearing seat 2 and on the side close to the output flange 3. The hole retaining rings are used to fix the axial movement of parts, and the shaft retaining rings are used to prevent unnecessary axial movement of the bearings, thereby ensuring the stability and reliability of the entire transmission system.

[0048] In this embodiment, specifically: two eccentric pins 14 are symmetrically installed on the housing 1 and on both sides of the fork rod 13, and a transition sleeve 15 is installed on the housing 1 and on the side of the housing 1 away from the bearing seat 2, and the operating range of the fork rod 13 is limited by the two eccentric pins 14.

[0049] Working principle: the left end of the input shaft 5 is formed with an external spline, and the sliding gear 10 is formed with an internal spline. The input shaft 5 and the sliding gear 10 are assembled together through spline matching. The sliding gear 10 can move axially on the output shaft 4. It can mesh with the large gear 8 when it moves to the right, and it can match with the internal gear made at the right end of the output shaft 4 in the form of splines when it moves to the left. The middle part of the input shaft 5 is assembled with the inner ring of the deep groove ball bearing, and the outer ring of the deep groove ball bearing is assembled into the inside of the box body 1. The input shaft 5 and the deep groove ball bearing are positioned by the retaining rings for each shaft and the retaining rings for the hole. The leftmost end of the input shaft 5 is matched with the inner ring of the deep groove ball bearing, and the outer ring of the deep groove ball bearing is assembled inside the output shaft 4. The left end of the input shaft 5 is positioned by the deep groove ball bearing, and a small gap is reserved between the left end face of the deep groove ball bearing and the right section of the output shaft 4.

[0050] The left end of the output shaft 4 is made of external splines, and the output flange 3 is made of internal splines. The output shaft 4 and the output flange 3 are assembled together through the spline matching. The output flange 3 is positioned and pressed by the external hexagonal bolts, the pressure plate 16 and the shaft shoulder of the output shaft 4. The anti-loosening washer is assembled at the lower part of the external hexagonal bolts to prevent the external hexagonal bolts from loosening. The middle part of the output shaft 4 is matched with the inner ring of the deep groove ball bearing and the cylindrical roller bearing, and the outer ring of the deep groove ball bearing and the cylindrical roller bearing is matched with the inner hole of the bearing seat 2. The deep groove ball bearing, the cylindrical roller bearing and the output shaft 4 are positioned by the shaft retaining ring and the hole retaining ring.

[0051] The outer diameter of the bearing seat 2 matches the inner hole of the housing 1, and the bearing seat 2 is fixed to the housing 1 by an external hexagonal bolt. The anti-loosening washer is assembled at the lower part of the external hexagonal bolt to prevent the external hexagonal bolt from loosening. The external teeth at the right end of the output shaft 4 are always meshed with the pinion 9. The pinion 9 and the large gear 8 are separated by a spacer 7. The spacer 7 is directly mounted on the spline shaft 6. The two ends of the spline shaft 6 match the tapered roller bearing and the inner ring of the tapered roller bearing. The tapered roller bearing and the outer ring of the tapered roller bearing match the housing 1. The hole retaining ring is used to axially position the tapered roller bearing and the tapered roller bearing 41.

[0052] Note: It needs to be further explained that the inner hole of the transition sleeve 15 and the outer circle of the box body 1 are matched together as an external connecting member and are not axially positioned;

[0053] The fork rod 13 is fixed to the fork 11 by a cotter pin. The lower end of the fork 11 has a hole, and the cylindrical end of the fork joint 12 is installed in the hole. The fork joint 12 can rotate freely and move axially in the hole of the fork 11. A groove is opened on the sliding gear 10, and the other end of the fork joint 12 is inserted into the groove. The groove width is greater than the thickness of the insertion end of the fork joint 12. There is a gap between the groove bottom and the insertion end of the fork joint 12. The upper shaft diameter of the fork 11 matches the hole of the box body 1, and can rotate freely in the hole to drive the fork 11 to swing. In order to limit the swing angle of the fork 11, an eccentric shaft pin is provided to limit it. The eccentricity of the left end of the eccentric shaft pin can fine-tune the swing amplitude. After the eccentric shaft pin adjusts the swing angle of the fork 11, a nut is provided to lock the eccentric shaft pin;

[0054] The housing 1 and the input shaft 5 are sealed by a skeleton oil seal, the skeleton oil seal has a hole and a retaining ring for axial positioning, the bearing seat 2 and the housing 1 are sealed by an O-ring, the bearing seat 2 and the output shaft 4 are sealed by a skeleton oil seal, the fork 11 and the housing 1 are sealed by an O-ring, the upper end hole of the housing 1 is sealed by a blind cover, and the eccentric shaft pin and the housing 1 are sealed by an O-ring;

[0055] Power transmission route 1: The sliding gear 10 inside the housing 1 is now in the neutral position. Under the torsion of the fork rod 13, the fork 11 is driven to rotate, and the fork 11 drives the fork joint 12 to rotate together. The fork joint 12 drives the sliding gear 10 to move to the right (route 1 is set to move to the right), and the sliding gear 10 is meshed with the large gear 8. At this time, the transmission route is closed, and the power enters the transmission system from the input shaft 5. The input shaft 5 drives the sliding gear 10 to rotate, and the sliding gear 10 drives the large gear 8 to rotate. The large gear 8 drives the spline shaft 6 to rotate, and the spline shaft 6 drives the pinion 9 to rotate together. The pinion 9 drives the output shaft 4 to rotate, and the output shaft 4 drives the output flange 3 to rotate, and the output flange 3 finally outputs the power;

[0056] Power transmission route 2: The sliding gear 10 inside the housing 1 is now in the neutral position. Under the torsion of the fork rod 13, the shift fork 11 is driven to rotate, and the shift fork 11 drives the shift fork joint 12 to rotate together. The shift fork joint 12 drives the sliding gear 10 to move to the left (route 2 is set to move to the left) and cooperates with the gear inside the output shaft 4 in the form of a spline. At this time, the transmission route is closed, and the power enters the transmission system from the input shaft 5. The output shaft 4 drives the sliding gear 10 to rotate, and the sliding gear 10 drives the output shaft 4 to rotate. The output shaft 4 drives the output flange 3 to rotate, and the output flange 3 finally outputs the power. At this time, the small gear 9, the spline shaft 6 and the large gear 8 are driven by the output shaft 4 to idle, and there is no power output.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox for a large multi-purpose harvester threshing drum, comprising a housing (1), a bearing seat (2) and an output flange (3), wherein the bearing seat (2) is connected to the housing (1) by bolts, and the output flange (3) is clamped on the bearing seat (2), characterized in that: An input shaft (5) and a spline shaft (6) are respectively installed in the housing (1), and an output shaft (4) is installed in the bearing seat (2); The spline shaft (6) is located above the input shaft (5), the input shaft (5) is coaxial with the output shaft (4), and the input shaft (5) is installed in the output shaft (4) through a bearing.

2. A gearbox for a large multi-purpose harvester threshing drum according to claim 1, characterized in that: It also comprises a shift fork (11), with a shift fork joint (12) and a shift fork rod (13) respectively installed at both ends of the shift fork (11), and a sliding gear (10) installed on the input shaft (5); The fork joint (12) is installed in the sliding gear (10), the input shaft (5) is provided with an external spline, the sliding gear (10) is provided with an internal spline, and the input shaft (5) and the sliding gear (10) are assembled via the spline.

3. A gearbox for a large multi-purpose harvester threshing drum according to claim 2, characterized in that: A spacer sleeve (7) is installed on the spline shaft (6), and a large gear (8) and a small gear (9) are installed on the spline shaft (6) and on both sides of the spacer sleeve (7); The sliding gear (10) is provided with teeth arranged at equal distances, and the large gear (8) is meshed with the sliding gear (10).

4. A gearbox for a large multi-purpose harvester threshing drum according to claim 3, characterized in that: The two ends of the output shaft (4) are respectively provided with external splines and teeth arranged at equal distances, the output flange (3) is provided with internal splines, the output flange (3) and the output shaft (4) are assembled via splines, and the end of the output shaft (4) away from the output flange (3) is meshed with a pinion (9).

5. A gearbox for a large multi-purpose harvester threshing drum according to claim 4, characterized in that: The output shaft (4) has teeth arranged at equal distances on one end thereof away from the output flange (3). The teeth arranged at equal distances on the output shaft (4) are adapted to the teeth arranged at equal distances on the outside of the sliding gear (10).

6. A gearbox for a large multi-purpose harvester threshing drum according to claim 1, characterized in that: The input shaft (5) is installed in the housing (1) via a bearing, a skeleton seal is installed in the housing (1) and on one side of the bearing, and the input shaft (5) passes through the skeleton seal; Therein, two shaft retaining rings are symmetrically installed in the housing (1) and located on both sides of the bearing, and a hole retaining ring is installed in the housing (1) and located on the side of the skeleton seal away from the bearing.

7. A gearbox for a large multi-purpose harvester threshing drum according to claim 3, characterized in that: The spline shaft (6) is installed in the housing (1) via two bearings, and two blind covers are symmetrically installed in the housing (1) at both ends of the spline shaft (6); Wherein, two hole retaining rings are symmetrically installed in the box body (1) and located on the repelling side of the two bearings.

8. The gearbox for a large multi-purpose harvester threshing drum according to claim 1, characterized in that: The output shaft (4) is installed in the bearing seat (2) via two bearings. Two hole retaining rings are symmetrically installed in the bearing seat (2) and located on one side adjacent to the two bearings. A shaft retaining ring is installed in the bearing seat (2) and on one side close to the output flange (3).

9. A gearbox for a large multi-purpose harvester threshing drum according to claim 2, characterized in that: Two eccentric pin shafts (14) are symmetrically mounted on the box body (1) and located on both sides of the shift fork rod (13). A transition sleeve (15) is mounted on the box body (1) and located on the side of the box body (1) away from the bearing seat (2).

10. The gearbox for a large multi-purpose harvester threshing drum according to claim 4, characterized in that: It also includes a pressure plate (16), which is attached to the side of the output flange (3) away from the bearing seat (2) through the output shaft (4) by bolts, and a skeleton seal is installed on the side of the bearing seat (2) close to the output flange (3).

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