CN210695017U - Harvester derailleur steering mechanism - Google Patents
Harvester derailleur steering mechanism Download PDFInfo
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- CN210695017U CN210695017U CN201921723596.2U CN201921723596U CN210695017U CN 210695017 U CN210695017 U CN 210695017U CN 201921723596 U CN201921723596 U CN 201921723596U CN 210695017 U CN210695017 U CN 210695017U
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Abstract
The utility model discloses a steering mechanism of a harvester transmission, which comprises a brake shaft (1), wherein two steering gear bars (2) are sleeved on the brake shaft (1); a plurality of transmission teeth (3) are arranged on each steering gear strip (2), and one side of each transmission tooth (3) is connected with a steering tooth (4); a smooth transition area (5) is arranged between the two steering gear bars (2), and a central transmission gear (6) is connected between the two steering gear bars (2); the inner wall of the central transmission gear (6) is provided with a plurality of internal teeth (7), and the central transmission gear (6) is meshed and connected with the steering gear bar (2) through the internal teeth (7) and the steering teeth (4). The utility model discloses not only can improve the stationarity that the variable speed turned to, still have the variable speed turn to speed height, long service life, brake axle rigidity height and convenient to use's advantage.
Description
Technical Field
The utility model relates to a steering mechanism for the harvester, especially a harvester derailleur steering mechanism.
Background
At present, the steering mechanism of the harvester gearbox is mainly divided into a jaw clutch type, a differential mechanism type and a steering clutch type, wherein the jaw clutch type is adopted by most harvesters; the jaw clutch is composed of two sleeves with teeth on end faces, wherein one sleeve is tightly matched on a driving shaft, the other sleeve can move on the other driven shaft along a guide flat key, and the two sleeves can be combined or separated by moving a slip ring by using an operating lever; however, the jaw clutch can be combined only when the two shafts do not rotate and the difference of the rotating speed is small, so that the variable speed steering can be carried out only by reducing the running speed of the harvester when the variable speed steering is carried out, and the variable speed steering efficiency is influenced; when the two sleeves of the jaw clutch type are combined, the clutch teeth between the two sleeves are meshed in an impacting mode, so that the impact force can influence the rotating smoothness when the jaw clutch is used for speed change and steering. Therefore, the existing gearbox steering mechanism for the harvester has the problems of low stability of speed change steering and low speed change steering rate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a harvester derailleur steering mechanism. The utility model discloses not only can improve the stationarity that the variable speed turned to, still have the variable speed and turn to the advantage that speed is high.
The technical scheme of the utility model: a steering mechanism of a harvester transmission comprises a brake shaft, wherein two steering gear bars which are symmetrically distributed are sleeved on the brake shaft; each steering gear strip is provided with a plurality of transmission teeth which are uniformly distributed in an annular mode, and one side of each transmission tooth is connected with a steering tooth; each steering tooth is arranged between the two transmission teeth; a smooth transition area is arranged between the two steering gear bars, and a central transmission gear is connected between the two steering gear bars; the inner ring wall of the central transmission gear is provided with a plurality of internal teeth which are uniformly distributed, and the central transmission gear is meshed and connected with the steering gear rack through the internal teeth and the steering teeth.
In the steering mechanism of the harvester transmission, the height of the transmission tooth is lower than that of the steering tooth; the width of the central transmission gear is smaller than that of the steering teeth, and the width of the central transmission gear is larger than that of the smooth transition area.
In the steering mechanism of the transmission of the harvester, the two end parts of the brake shaft are respectively sleeved with the fixing rings, and the fixing rings are internally provided with the stepped mounting channels; the diameter of one end, close to the transmission teeth, of the stepped mounting channel is larger than that of one end, far away from the transmission teeth, of the stepped mounting channel; the inner wall of the stepped installation channel, which is close to one end of the transmission teeth, is provided with an internal spline, and the fixing ring is meshed with the steering gear strip through the internal spline and the transmission teeth.
In the steering mechanism of the harvester transmission, an included angle at a joint of the steering teeth and the internal teeth is 88 degrees, and an included angle of the internal teeth is 30 degrees.
Compared with the prior art, the utility model improves the prior harvester speed change steering mechanism, two steering gear strips which are symmetrically distributed are sleeved on the brake shaft, a central transmission gear is connected between the two steering gear strips, inner teeth are arranged on the inner wall of the central transmission gear, the steering gear strips are provided with the steering teeth, and the central transmission gear and the steering gear strips are meshed with each other by utilizing the inner teeth and the steering teeth; the gear transmission mode is utilized to change the traditional transmission mode utilizing a jaw clutch mode, so that the transmission is more stable in speed change and steering; when the speed change steering is carried out, the speed change steering is not needed under the condition that the harvester is low in speed or does not basically run, and only the position of the central rotating gear is required to be moved, so that the use is convenient, and the speed change steering speed is improved; meanwhile, the central transmission gear is vertically assembled on the whole brake shaft, so that the rigidity of the brake shaft is improved. In addition, the utility model also sets the height of the transmission gear to be lower than that of the steering gear, thereby preventing the external transmission gear connected with the transmission gear from being meshed with the steering gear, and further influencing the effect of variable speed rotation; the fixing rings are sleeved at the two end parts of the brake shaft, the stepped mounting channels are arranged in the fixing rings, and the stability of connection between the brake shaft and the steering gear rack can be improved by using the fixing rings; through the contained angle that will turn to tooth and internal tooth combination department be 88, internal tooth entrance angle is 30 for the position that turns to tooth and internal tooth and be connected is more stand wear and tear, thereby has prolonged derailleur steering mechanism's life. Therefore, the utility model discloses not only can improve the stationarity that the variable speed turned to, still have the variable speed turn to speed height, long service life, brake axle rigidity height and convenient to use's advantage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the construction of the central drive gear;
FIG. 3 is a schematic structural view of a steering gear rack;
fig. 4 is a schematic structural view of the fixing ring.
The labels in the figures are: 1-brake shaft, 2-steering gear rack, 3-transmission gear teeth, 4-steering gear teeth, 5-smooth transition region, 6-central transmission gear, 7-internal gear teeth, 8-fixing ring, 9-installation channel and 10-internal spline.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. A steering mechanism of a harvester speed changer is shown in figures 1 to 4 and comprises a brake shaft 1, wherein two steering gear bars 2 which are symmetrically distributed are sleeved on the brake shaft 1; each steering gear bar 2 is provided with a plurality of transmission teeth 3 which are uniformly distributed in an annular shape, and one side of each transmission tooth 3 is connected with a steering tooth 4; each steering tooth 4 is arranged between two transmission teeth 3; a smooth transition area 5 is arranged between the two steering gear bars 2, and a central transmission gear 6 is connected between the two steering gear bars 2; the inner ring wall of the central transmission gear 6 is provided with a plurality of internal teeth 7 which are uniformly distributed, and the central transmission gear 6 is meshed and connected with the steering gear bar 2 through the internal teeth 7 and the steering teeth 4.
The height of the transmission teeth 3 is lower than that of the steering teeth 4; the width of the central transmission gear 6 is smaller than that of the steering tooth 4, and the width of the central transmission gear 6 is larger than that of the smooth transition area 5; fixing rings 8 are sleeved at two end parts of the brake shaft 1, and stepped mounting channels 9 are arranged in the fixing rings 8; the diameter of one end, close to the transmission teeth 3, of the stepped mounting channel 9 is larger than that of one end, far away from the transmission teeth 3, of the stepped mounting channel 9; an inner spline 10 is arranged on the inner wall of the stepped mounting channel 9 close to one end of the transmission tooth 3, and the fixing ring 8 is in meshed connection with the steering gear bar 2 through the inner spline 10 and the transmission tooth 3; the included angle of the joint of the steering teeth 4 and the inner teeth 7 is 88 degrees, and the cutting angle of the inner teeth 7 is 30 degrees.
The working principle is as follows: when the harvester carries out rectilinear motion, as long as prevent again with central drive gear 6's center pin and two symmetrical axle that turn to between the rack 2 on the same straight line, because central drive gear 6's width is greater than the width of smooth transition district 5, thereby make central drive gear 6's both ends homoenergetic be connected with the rack 2 that turns to of both sides, make to turn to tooth 4 and internal tooth 7 and can mesh and connect, thereby make central drive gear 6 can drive and turn to that rack 2 and rotate, the entering makes brake shaft 1 rotate, thereby make the harvester can carry out rectilinear motion.
When the harvester needs to turn, the central transmission gear 6 is pushed to the opposite direction of the turning direction, so that the central transmission gear 6 is only meshed with the turning teeth 4 on the turning gear bar 2 in the opposite direction of the turning direction, and the turning gear bar 2 in the turning direction stops rotating, so that rapid and stable turning is realized.
Claims (4)
1. A harvester derailleur steering mechanism which characterized in that: the steering gear mechanism comprises a brake shaft (1), wherein two steering gear bars (2) which are symmetrically distributed are sleeved on the brake shaft (1); a plurality of transmission teeth (3) which are uniformly distributed in an annular shape are arranged on each steering gear bar (2), and one side of each transmission tooth (3) is connected with a steering tooth (4); each steering tooth (4) is arranged between the two transmission teeth (3); a smooth transition area (5) is arranged between the two steering gear bars (2), and a central transmission gear (6) is connected between the two steering gear bars (2); the inner ring wall of the central transmission gear (6) is provided with a plurality of internal teeth (7) which are uniformly distributed, and the central transmission gear (6) is meshed and connected with the steering gear rack (2) through the internal teeth (7) and the steering teeth (4).
2. The harvester transmission steering mechanism of claim 1, wherein: the height of the transmission teeth (3) is lower than that of the steering teeth (4); the width of the central transmission gear (6) is smaller than that of the steering tooth (4), and the width of the central transmission gear (6) is larger than that of the smooth transition area (5).
3. The harvester transmission steering mechanism of claim 1, wherein: fixing rings (8) are sleeved at two end parts of the brake shaft (1), and stepped mounting channels (9) are arranged in the fixing rings (8); the diameter of one end, close to the transmission teeth (3), of the stepped mounting channel (9) is larger than that of one end, far away from the transmission teeth (3), of the stepped mounting channel (9); an inner spline (10) is arranged on the inner wall of the stepped mounting channel (9) close to one end of the transmission tooth (3), and the fixing ring (8) is in meshed connection with the steering gear bar (2) through the inner spline (10) and the transmission tooth (3).
4. A harvester transmission steering mechanism as in any one of claims 1 to 3, wherein: the included angle of the joint of the steering teeth (4) and the internal teeth (7) is 88 degrees, and the cut-in angle of the internal teeth (7) is 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723596.2U CN210695017U (en) | 2019-10-15 | 2019-10-15 | Harvester derailleur steering mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921723596.2U CN210695017U (en) | 2019-10-15 | 2019-10-15 | Harvester derailleur steering mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210695017U true CN210695017U (en) | 2020-06-09 |
Family
ID=70923388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921723596.2U Active CN210695017U (en) | 2019-10-15 | 2019-10-15 | Harvester derailleur steering mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210695017U (en) |
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2019
- 2019-10-15 CN CN201921723596.2U patent/CN210695017U/en active Active
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