Nut locking structure for side reducer assembly of cotton picker

Abstract

The nut locking structure comprises a hub shaft and a locking nut, a plurality of first through grooves penetrating through the side wall are formed in the bottom face of one side of the hub shaft, and a plurality of second through grooves penetrating through the inner side wall and the outer side wall of the locking nut are formed in the bottom face of one side of the locking nut. The locking nut is connected to the end, close to the first through grooves, of the hub shaft in a threaded mode, the two ends of at least one first through groove communicate with the second through grooves correspondingly, through grooves formed by the first through grooves and the second through grooves are locking grooves, locking keys are embedded in the locking grooves, and the locking piece is of a long-strip-shaped structure. At least one end of one side end face is provided with a groove penetrating through two adjacent side end faces, and the groove is clamped with the check ring; the check ring is embedded in an annular clamping groove in the outer side wall of the locking nut, and the annular clamping groove intersects with the second through groove.

Description

Technical Field

[0001] The utility model relates to a nut locking structure for a side reduction assembly of a cotton picker. Background Art

[0002] Agricultural machinery is usually heavy and needs to move at a slow speed to ensure working effect. Therefore, the side reducer structure is an important part of the machine's travel mechanism. In the traditional cotton picker side reducer assembly, the hub shaft locking structure is relatively complex, and the parts processing accuracy is required to be high. It is also difficult to disassemble during assembly, resulting in high processing costs and low production efficiency. At the same time, the large gear in the side reducer assembly is limited by a retaining spring, resulting in errors in the limit accuracy and unreliable limit. Utility Model Content

[0003] The purpose of the utility model is to solve the above deficiencies in the prior art and to provide a nut locking structure for a side reduction assembly of a cotton picker.

[0004] A nut locking structure for a side reduction assembly of a cotton picker includes a hub shaft and a locking nut. A bottom surface of one side of the hub shaft is provided with a plurality of first through grooves penetrating the side wall. A bottom surface of one side of the locking nut is provided with a plurality of second through grooves penetrating the inner and outer side walls thereof. The locking nut is threadedly connected to one end of the hub shaft close to the first through groove, and at least two ends of one first through groove are respectively connected to one second through groove. The through groove formed by the first through groove and the second through groove is a locking groove.

[0005] A locking piece is embedded in the locking groove, and the locking piece is a long strip structure, one side of its surface is provided with a groove penetrating through the end faces on both sides, and the edge on the other side of the surface is provided with a notch penetrating through the end faces on both sides; an annular groove is provided on the outer wall of the locking nut, the groove intersects with the second through groove, and a retaining ring is embedded in the groove, and the retaining ring is located in the notch and groove of the locking piece.

[0006] In order to prevent the bearings and gears from sliding on the hub shaft, it is necessary to eliminate the gaps between the parts. The hub shaft is a step structure, and a transmission structure is connected to the hub shaft. The transmission structure includes a first bearing, a second bearing, a first gear, a first spacer, a second spacer and an oil seal. The first spacer and the second spacer are both made of hard materials.

[0007] The hub shaft is rotatably connected to the first mounting hole on the shell through the first bearing and the second bearing on both sides. A first gear is arranged between the first bearing and the second bearing, a first spacer is arranged between the first gear and the first bearing, and a second spacer is arranged between the second bearing and the first gear, which serves as a limit adjustment for the first gear. A coupling disk for mounting the hub is arranged at the end of the hub shaft away from the first through groove, and the coupling disk is located on the outside of the shell. An oil seal is arranged between the coupling disk and the transmission structure, and the oil seal is used to seal the gap between the inner wall of the mounting hole and the hub shaft.

[0008] In order to achieve the edge reduction effect, the first gear is meshed with the second gear, the second gear is fixed on the transmission shaft, the transmission shaft rotates through the third bearing and the fourth bearing and passes through the second mounting hole on the shell, and a second gear is arranged between the third bearing and the fourth bearing. The diameter of the second gear is smaller than the diameter of the first gear, and the number of teeth thereof is also smaller than the number of teeth of the first gear. One end of the transmission shaft extends from one end of the second mounting hole and is connected to the gearbox through a spline structure.

[0009] In order to prevent foreign matter from entering, at least one end of the transmission shaft is provided with an oil seal, and the oil seal is used to seal the gap between the inner wall of the second mounting hole and the transmission.

[0010] In order to facilitate installation, the shell is a split structure, and the shell includes an edge reduction shell and an edge reduction cover, and the edge reduction shell and the edge reduction cover are connected by bolts.

[0011] In order to ensure sealing, a hub cover is provided at the port of the first mounting hole close to one end of the locking nut, and a bearing cover is provided at the port of the other end of the second mounting hole, and the bearing cover is fixed to the housing by bolts.

[0012] In order to limit the position of the bearing or other parts, the inner walls of the first mounting hole and the second mounting hole are both step structures.

[0013] For easy operation, the side reducer shell is equipped with a refueling plug, an oil drain plug, an oil level indicator and a vent plug.

[0014] Beneficial effect: Compared with the prior art, the utility model forms a locking groove through the second through groove on the surface of the locking nut and the first through groove on the end face of the hub shaft, and a locking piece is embedded therein to prevent the locking nut from loosening during vibration. A retaining ring is then arranged in the groove and notch of the locking piece to prevent the locking piece from slipping. The whole is restricted to each other by the mortise and tenon structure, thereby ensuring the locking effect and facilitating disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of a nut locking structure for a cotton picker side reduction assembly;

[0016] Figure 2 It is the front view of the hub shaft;

[0017] Figure 3 It is the left side view of the hub shaft;

[0018] Figure 4 It is the front view of the locking nut;

[0019] Figure 5 is a side view of the locking nut;

[0020] Figure 6 is a front view of the locking member;

[0021] Figure 7 is a side view of the locking member;

[0022] In the figure, 1, edge reduction housing, 2, wheel hub cover, 3, wheel hub shaft, 4, locking nut, 5, retaining ring, 6, first bearing, 7, transmission shaft, 8, third bearing, 9, second gear, 10, fourth bearing, 11, bearing cover, 12, edge reduction cover, 13, first gear, 14, second spacer, 15, second bearing, 16, connecting plate, 17, oil seal, 18, first spacer, 19, first through groove, 20, second through groove, 21, locking piece, 22, groove, 23, slot, 24, notch. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0024] like Figure 1-7 As shown, the side reduction housing 1, the hub cover 2, the hub shaft 3, the locking nut 4, the retaining ring 5, the first bearing 6, the transmission shaft 7, the third bearing 8, the second gear 9, the fourth bearing 10, the bearing cover 11, the side reduction cover 12, the first gear 13, the second spacer 14, the second bearing 15, the connecting plate 16, the oil seal 17, the first spacer 18, the first through groove 19, the second through groove 20, the locking piece 21, the groove 22, the slot 23, and the notch 24;

[0025] A nut locking structure for a side reducer assembly of a cotton picker includes a shell, a transmission shaft 7 and a hub shaft 3. The shell is a split structure, and includes a side reducer shell 1 and a side reducer cover 12. The side reducer shell 1 and the side reducer cover 12 are connected by bolts. An inner cavity is provided inside the shell for installing various components. A parallel first mounting hole and a second mounting hole are provided on the shell. The hub shaft 3 is mounted in the first mounting hole through a bearing, and is fixedly connected to a first gear 13 through a spline structure. The transmission shaft 7 is mounted in the second mounting hole through a bearing, and is fixedly connected to a second gear 9 through a spline structure. The size of the first gear 13 is larger than that of the second gear 9, and the number of teeth thereof is greater than that of the second gear 9. When the two gears are meshed, a side reducer effect is achieved.

[0026] On the hub shaft 3, the first gear 13 is located between the first bearing 6 and the second bearing 15, the two ends of the first spacer 18 are respectively against the end faces of the first bearing 6 and the first gear 13, the two ends of the second spacer 14 are respectively against the end faces of the second bearing 15 and the first gear 13, the other sides of the two bearings are respectively against the locking nut 4 and the shoulders of the hub shaft 3, by tightening the locking nut 4 to tighten the various parts, thereby eliminating the gaps between the various parts on the hub shaft 3 and preventing the parts from shifting during operation, and the two side ports of the mounting hole are respectively sealed by the oil seal 17 and the hub cover 2.

[0027] The bottom surface of one side of the hub shaft 3 is provided with two first through grooves 19 that intersect vertically and form a "cross". The bottom surface of one side of the locking nut 4 is provided with six second through grooves 20 that are equidistantly spaced and penetrate its inner and outer side walls. The locking nut 4 is threadedly connected to one end of the hub shaft 3 close to the first through groove 19. After tightening the locking nut 4, at least two ends of one first through groove 19 are respectively connected to a second through groove 20. The through groove formed by the first through groove 19 and the second through groove 20 is a locking groove, and a locking member 21 is embedded in the locking groove. The locking member is a long strip structure, and one side of its surface is provided with a groove 22 that penetrates the end faces on both sides, and the edge of the other side of the surface is provided with a notch 24 that penetrates the end faces on both sides; an annular groove 23 is provided on the outer wall of the locking nut 4, and the groove 23 intersects with the second through groove 20. A retaining ring 5 is embedded in the groove 23, and the retaining ring 5 is located in the notch 24 and the groove.

[0028] That is, the position of the bottom surface of the second through groove 20 exceeds the position of the clamping groove 23. When the retaining ring 5 is clamped in the annular clamping groove 23, the part passing through the second through groove 20 is suspended in the air. When the locking member 21 is clamped in, the retaining ring 5 can be embedded in the groove 22 to limit the locking member 21.

[0029] On the transmission shaft 7, the second gear 9 is located between the third bearing 8 and the fourth bearing 10. The second gear 9 fits tightly with the inner rings of the two bearings. When the transmission shaft 7 rotates, the three rotate synchronously without friction interference. One end of the transmission shaft 7 extends out of the second mounting hole and is connected to the speed change through a spline structure to transmit power. On this side, the second mounting hole and the transmission shaft 7 are sealed by an oil seal 17, and the other end of the second mounting hole is sealed by a bearing cover 11, and the bearing rests against the bearing on this side, and the bearing on the other side rests on the step of the second mounting hole, thereby completing the limitation of the bearing parts of the transmission shaft 7 to prevent the parts from being displaced during operation.

[0030] In addition, the side reducer housing 1 is provided with a refueling screw plug, an oil drain screw plug, an oil level indicator, and a venting screw plug.

[0031] Workflow: Unscrew the oil filling screw plug, add the specified amount of lubricating oil into the side reducer assembly, and observe the oil filling situation through the oil level display. After the oil filling is completed, tighten the oil filling screw plug.

[0032] The side reduction assembly is composed of a left reduction assembly and a right reduction assembly, which are respectively installed on the left and right front wheel hubs of the cotton picker. The power is output from the gearbox and divided into the left and right sides. It is transmitted to the external splines of the transmission shaft 7 of the left and right reduction assemblies through the spline sleeve, driving the second gear 9 shaft to rotate and realize power input. The transmission shaft 7 rotates, driving the first gear 13 meshing with it to rotate. Since the number of teeth on the second gear 9 shaft and the large gear are different, the second gear 9 shaft has fewer teeth, thereby realizing speed reduction transmission. The first gear 13 drives the hub shaft 3 to rotate through the internal spline hole, so that the coupling disk 16 on the hub shaft 3 rotates together. The front wheel hub of the cotton picker is installed on the coupling disk 16, so that the front wheel rotates and drives the vehicle to move.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nut locking structure for a cotton picker side reduction assembly, characterized in that: The invention comprises a hub shaft and a locking nut, wherein a bottom surface of one side of the hub shaft is provided with a plurality of first through grooves penetrating through the side wall, a bottom surface of one side of the locking nut is provided with a plurality of second through grooves penetrating through the inner and outer side walls thereof, the locking nut is threadedly connected to an end of the hub shaft close to the first through groove, and at least two ends of one first through groove are respectively connected to a second through groove, and the through groove formed by the first through groove and the second through groove is a locking groove; A locking piece is embedded in the locking groove, and the locking piece is a long strip structure, one side of its surface is provided with a groove penetrating the two side end faces, and the edge of the other side of the surface is provided with a notch penetrating the two side end faces; an annular groove is provided on the outer wall of the locking nut, the groove intersects with the second through groove, and a retaining ring is embedded in the groove, and the retaining ring is located in the notch and the groove.

2. A nut locking structure for a cotton picker side reduction assembly according to claim 1, characterized in that: The hub shaft is a step structure, and a transmission structure is connected to the hub shaft, and the transmission structure includes a first bearing, a second bearing, a first gear, a first spacer, a second spacer and an oil seal; The hub shaft is rotatably connected to the first mounting hole on the shell through the first bearing and the second bearing on both sides. A first gear is provided between the first bearing and the second bearing, a first spacer is provided between the first gear and the first bearing, and a second spacer is provided between the second bearing and the first gear. Both the first spacer and the second spacer are made of hard materials. A coupling plate for mounting the hub is provided at the end of the hub shaft away from the first through groove. The coupling plate is located on the outside of the shell. An oil seal is provided between the coupling plate and the transmission structure. The oil seal is used to seal the gap between the inner wall of the mounting hole and the hub shaft.

3. A nut locking structure for a cotton picker side reduction assembly according to claim 2, characterized in that: The first gear is meshed with the second gear, and the second gear is fixed on the transmission shaft. The transmission shaft rotates through the third bearing and the fourth bearing and passes through the second mounting hole on the shell. A second gear is arranged between the third bearing and the fourth bearing. The diameter of the second gear is smaller than the diameter of the first gear, and the number of teeth thereof is also smaller than the number of teeth of the first gear. One end of the transmission shaft extends from one end of the second mounting hole and is connected to the gearbox through a spline structure.

4. A nut locking structure for a cotton picker side reduction assembly according to claim 3, characterized in that: At least one end of the transmission shaft is provided with an oil seal, and the oil seal is used to seal the gap between the inner wall of the second mounting hole and the transmission.

5. The nut locking structure for the edge reduction assembly of a cotton picker according to claim 3, characterized in that: The shell is a split structure, and the shell comprises an edge reduction shell and an edge reduction cover, and the edge reduction shell and the edge reduction cover are connected by bolts.

6. The nut locking structure for the edge reduction assembly of a cotton picker according to claim 3, characterized in that: A hub cover is provided at the port of one end of the first mounting hole close to the locking nut, and a bearing cover is provided at the port of the other end of the second mounting hole. The bearing cover is fixed to the housing by bolts.

7. The nut locking structure for the edge reduction assembly of a cotton picker according to claim 5, characterized in that: The inner walls of the first mounting hole and the second mounting hole are both step structures.

8. The nut locking structure for the edge reduction assembly of a cotton picker according to claim 5, characterized in that: The side reducer shell is provided with a refueling screw plug, an oil drain screw plug, an oil level indicator and a venting screw plug.

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