CN113632603A - Speed change mechanism of rotary cultivator - Google Patents
Speed change mechanism of rotary cultivator Download PDFInfo
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- CN113632603A CN113632603A CN202110947946.9A CN202110947946A CN113632603A CN 113632603 A CN113632603 A CN 113632603A CN 202110947946 A CN202110947946 A CN 202110947946A CN 113632603 A CN113632603 A CN 113632603A
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- spline
- shaft
- sealing
- output shaft
- rotary
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- 238000007789 sealing Methods 0.000 claims abstract description 98
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 238000003971 tillage Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000010985 leather Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009313 farming Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/082—Transmissions; Gearings; Power distribution
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
- A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
- A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
- A01B33/103—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented horizontally
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Power Engineering (AREA)
- Soil Working Implements (AREA)
Abstract
The invention discloses a speed change mechanism of a rotary cultivator, which comprises a gearbox, a spline output shaft and a rotary tillage blade rotating shaft, wherein the spline output shaft is a nonporous spline shaft which is symmetrically arranged along the middle position; the outer wall of the middle part of the nonporous spline shaft is provided with external spline teeth which are arranged along the circumferential direction; the nonporous spline shaft is characterized in that two ends of the nonporous spline shaft are also provided with axial holes for axial positioning, and the nonporous spline shaft sequentially comprises a spline tooth end, a smooth end, an involute spline end and a positioning end from the middle part along a single axial direction. The invention replaces the spline output shaft in the existing rotary cultivator with the non-porous spline shaft (the outer spline teeth position of the power transmission at the two sides of the spline shaft has no positioning perforation), prevents the rotary cultivator from entering silt when working, and simultaneously utilizes mechanical seal, the sealing effect is good, and the vibration of the rotary cultivator is reduced.
Description
Technical Field
The invention relates to a speed change mechanism of a rotary cultivator.
Background
The rotary cultivator is a cultivator which is matched with a tractor to complete the operations of ploughing and harrowing. The soil breaking machine has the characteristics of strong soil breaking capacity, flat ground surface after ploughing and the like, so that the soil breaking machine is widely applied; meanwhile, the stubble buried below the ground surface can be cut up, the operation of the seeder is convenient, and a good seedbed is provided for later-stage seeding.
Most of the existing rotary cultivators are driven soil cultivation machines using rotary cutter teeth as working parts, and are divided into a horizontal shaft type and a vertical shaft type according to the configuration mode of rotary cutter shafts of the rotary tillage machines; the rotary cultivator is more applied to a transverse shaft type rotary cultivator with a horizontally-arranged cutter shaft, in order to ensure the transmission torque of an output spline shaft and a rotary cultivator tooth rotating shaft of a gearbox of the rotary cultivator, the power transmission of the spline shaft and the spline housing to the cutter shaft is realized by matching perforated spline shaft through holes and bolts, and because the working environment of the rotary cultivator is complex, water and silt enter the spline shaft and the spline housing through holes, the damage of silt to the spline shaft and the spline housing cannot be ensured by the conventional perforated spline shaft and spline housing, and the accelerated damage of the sealing performance of the rotary cultivator is also caused by the entrance of silt, so that the service life of the spline shaft, the spline housing and an oil seal of the conventional rotary cultivator is greatly shortened, and the service time of the rotary cultivator in the farming period cannot be ensured.
Disclosure of Invention
The present invention is to solve the above problems and to provide a speed change mechanism of a rotary cultivator for transmitting torque through a mechanical seal and a spline housing.
In order to achieve the purpose, the invention is realized by the following technical scheme: a speed change mechanism of a rotary cultivator comprises a gearbox, a spline output shaft and a rotary tillage blade rotating shaft, wherein the gearbox comprises a box body, an input shaft, a transmission shaft, an intermediate shaft and an output gear; the spline output shaft is a nonporous spline shaft which is symmetrically arranged along the middle position; the outer wall of the middle part of the nonporous spline shaft is provided with external spline teeth which are arranged along the circumferential direction; the nonporous spline shaft sequentially comprises a spline tooth end, a smooth end, an involute spline end and a positioning end from the middle part along a single axial direction; the outer wall of the spline tooth end is provided with external spline teeth which are used for matching with an output gear internally accommodating a spline output shaft; the bearing and the sealing device are positioned outside the smooth end and are used for sealing the non-porous spline shaft; the involute spline end is provided with a spline with involute tooth profile and is used for connecting with a spline sleeve to transmit torque; the radial height of the positioning end is smaller than that of the involute spline end, and the outer wall of the positioning end is provided with clamp spring holes arranged along the circumferential direction; a spline output shaft clamp spring is accommodated in the clamp spring hole and used for limiting the axial direction of the spline output shaft;
the section of the spline housing is in a convex shape, a key matched with the spline is accommodated in the upper spline housing, and torque is transmitted through the matching of the key and the spline; a disc which is integrally formed with the upper spline housing is arranged below the spline housing; a shaft hole through which the spline output shaft passes is formed in the disc, and a circular groove is formed in the radial direction outside the shaft hole; a positioning gasket for limiting the spline output shaft clamp spring is accommodated in the groove; and a spline housing retainer ring is further arranged on the disc outside the groove and used for limiting the spline housing in the axial direction.
Furthermore, two sides of the transmission shaft and the middle shaft in the gearbox are fixed in the box body through bearings; the input shaft is provided with a small bevel gear, the transmission shaft is provided with a large bevel gear and a transmission gear, and the intermediate shaft is provided with an intermediate gear; the small bevel gear and the large bevel gear are meshed to change the power direction and realize speed reduction, the transmission gear and the output gear are respectively meshed with the intermediate gear, and the transmission gear and the large bevel gear are coaxially arranged; the inner part of the output gear is matched and fixed with the spline output shaft through external spline teeth arranged on the outer side of the spline output shaft; the input shaft rotates to drive the transmission shaft, and then the spline output shaft is driven to rotate through the intermediate shaft.
Furthermore, bolt holes through which bolts penetrate are formed in the corresponding positions of the rotating disc and the disc, and the plurality of groups of bolt holes are arranged in an axisymmetric mode in the radial direction of the spline output shaft; and arc-shaped grooves are further formed in the positions, corresponding to the rotary disc, of the rotary disc and used for reducing the weight of the spline sleeve and the rotary shaft of the rotary blade.
Particularly, two sides of the spline output shaft are fixed in the gearbox through bearings, and external spline teeth of the spline output shaft are matched with spline holes in an output gear of the gearbox to realize the transmission torque of the output gear and the spline output shaft.
Further, it is symmetrical about the mid-plane; the middle plane is superposed with the middle position of the non-porous spline shaft; the speed change mechanism of the rotary cultivator is characterized in that an output gear end above a speed change box body, a non-porous spline shaft which is matched with the output gear end, a bearing for fixing the non-porous spline shaft, a sealing device for realizing the sealing of the speed change mechanism of the rotary cultivator, a spline housing for driving the torque of an output shaft of the spline through the matching of a key and the spline, and a rotary tillage blade rotating shaft for driving the torque of the spline housing through the matching of a rotating disk and a disk are arranged in sequence along a single axial direction from a middle plane part.
Particularly, the outer wall of the rotary shaft of the rotary blade is uniformly provided with the rotary blade, and the output end of the rotary blade is connected with a disc of the spline housing; the output end of the rotary tillage blade rotating shaft is a rotating disk which is integrally formed with the rotary tillage blade rotating shaft; the rotating disc is matched with the round disc below the spline sleeve, and the rotating disc and the round disc are fixed together through bolts and are used for transmitting torque.
Particularly, the sealing device is a floating ring oil seal and comprises a sealing floating ring, a sealing ring oil seal seat and a sealing gasket; the sealing ring oil seal seat is fixedly provided with a sealing O-shaped leather ring, one side of the sealing O-shaped leather ring is fixed at the position of a bearing end arranged at two sides of the spline output shaft, and the other side of the sealing O-shaped leather ring is attached to the end surface of the sealing floating ring; a floating steel ring is arranged in the sealing floating ring, one side of the floating steel ring is attached to the end face of the sealing ring oil seal seat, and the other side of the floating steel ring is provided with a space for accommodating a sealing gasket; the floating steel ring and the sealing O-shaped ring are used for sealing the sealing between the spline output shaft and the gearbox between the floating ring and the sealing ring oil seal seat; the sealing gasket is fixed in the sealing floating ring, and the other side of the sealing gasket is abutted against the end face of the spline housing and used for axially positioning the sealing device.
In conclusion, the invention has the following beneficial effects: the invention replaces the spline output shaft in the existing rotary cultivator with the non-porous spline shaft, prevents silt from entering the spline hole when the rotary cultivator works, and simultaneously utilizes the floating ring oil seal for sealing, thereby avoiding accelerated abrasion of the spline shaft and the spline housing and damage of the sealing element caused by the fact that water and silt enter the positioning hole of the spline shaft and the spline housing when the rotary cultivator works with good sealing effect. And the floating ring oil seal is used for replacing the traditional framework oil seal, so that better sealing performance and stability are achieved. The rotary cultivator can be ensured to have longer service time and stability in the farming period, and the spline sleeve is utilized to transmit torque, so that the assembly is more convenient while the transmission effect is ensured; the invention realizes full sealing on the speed change mechanism of the rotary cultivator, and greatly prolongs the service life of parts and the whole rotary cultivator.
Drawings
FIG. 1 is a schematic structural view of a transmission according to the present invention;
FIG. 2 is a schematic structural view of a splined output shaft of the present invention;
FIG. 3 is a schematic view of the connection of the spline output shaft and the spline housing of the present invention;
FIG. 4 is a schematic view of the construction of the sealing device of the present invention;
FIG. 5 is a schematic diagram of the connection blasting of the spline output shaft and the spline housing according to the present invention;
FIG. 6 is a schematic structural view of a speed change mechanism of a rotary tiller according to the present invention.
Detailed Description
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
Referring to fig. 1, a speed change mechanism of a rotary cultivator comprises a gearbox 1, a spline output shaft 2 and a rotary tillage blade rotating shaft 3, wherein the gearbox 1 comprises a box body 110, an input shaft 111, a transmission shaft 112, an intermediate shaft 113 and an output gear 114; both sides of the transmission shaft 112 and the intermediate shaft 113 are fixed in the box body 110 through bearings; a small bevel gear 1110 is arranged on the input shaft 111, a large bevel gear 1120 and a transmission gear 1121 are arranged on the transmission shaft 112, and an intermediate gear 1130 is arranged on the intermediate shaft 113; the small bevel gear 1110 and the large bevel gear 1120 are meshed to change the power direction and realize speed reduction, the transmission gear 1121 and the output gear 114 are respectively meshed with the intermediate gear 1130, and the transmission gear 1121 and the large bevel gear 1120 are coaxially arranged; the inside of the output gear 114 is matched and fixed with the spline output shaft 2 through an external spline tooth 201 arranged on the outer side of the spline output shaft 2; the input shaft 111 rotates to drive the transmission shaft 112, and then the spline output shaft 2 is driven to rotate through the intermediate shaft 113;
referring to fig. 2, because a large amount of silt is generated in the working environment of the rotary cultivator, the silt moves upwards from the rotary cultivator tooth rotating shaft 3 to the spline output shaft 2, the existing rotary cultivator mostly uses the porous spline output shaft to transmit torque, and the opportunity that the silt enters the spline output shaft is given, so that the service lives of the spline shaft and the spline sleeve of the rotary cultivator are greatly reduced; the invention provides a non-porous spline shaft 200 as a spline output shaft 2; the nonporous spline shaft 200 is symmetrically arranged along the middle position; the outer wall of the middle part of the non-porous spline shaft 200 is provided with external spline teeth 201 which are arranged along the circumferential direction; the holeless spline shaft 200 includes a spline tooth end 2001, a smooth end 2002, an involute spline end 2003, and a positioning end 2004 in this order from the middle portion along a single axial direction; the outer wall of the spline tooth end is provided with external spline teeth 201 which are used for matching with an output gear 114 internally accommodating the spline output shaft 2; the bearing and sealing device 5 is positioned outside the smooth end 2001 and used for sealing the nonporous spline shaft 200; the involute spline end 2003 is provided with a spline 23 with involute tooth profile, and the spline 23 is used for connecting with the spline housing 4 to transmit torque; the radial height of the positioning end 2004 is smaller than that of the involute spline end 2003, and the outer wall of the positioning end 2004 is provided with clamp spring holes 202 arranged along the circumferential direction; a spline output shaft clamp spring 203 is arranged in the clamp spring hole 202 and used for limiting the axial direction of the spline output shaft 2; two sides of the spline output shaft 2 are fixed in the gearbox 1 through bearings, and the external spline teeth 201 of the spline output shaft are matched with a spline hole 1140 arranged in the output gear 114 of the gearbox 1 to realize the transmission torque of the output gear 114 and the spline output shaft 2.
Referring to fig. 3, 4 and 5, in order to improve the stability of the transmission torque of the holeless spline shaft 200, the invention discloses a spline housing 4 matched with the same, the cross section of the spline housing 4 is in a convex shape, a key 401 matched with the spline is accommodated in the upper spline housing 4, and the transmission torque is transmitted by the matching of the key 401 and the spline 23; below the spline housing 4 is a disc 402 formed integrally with the upper spline housing 4; a shaft hole 403 through which the spline output shaft 2 passes is arranged inside the disc 402, and a circular groove 404 is arranged outside the shaft hole 403 in the radial direction; a positioning gasket 405 for limiting the spline output shaft clamp spring 203 is accommodated in the groove 404; a spline housing retainer ring 406 is further arranged on the disc 402 outside the groove 404 and used for limiting the axial direction of the spline housing 4;
in order to realize the full sealing on the speed change mechanism of the rotary cultivator and change the situation that the sealing effect of the existing simple oil seal is not good, the invention utilizes the floating ring oil seal to realize the sealing on the speed change mechanism; the sealing device 5 is a floating ring oil seal and comprises a sealing floating ring 501, a sealing ring oil seal seat 502 and a sealing gasket 503; a sealing O-shaped leather ring 5020 is fixed on the sealing ring oil seal seat 502, one side of the sealing O-shaped leather ring 5020 is fixed at the end positions of the bearings 600 arranged at the two sides of the spline output shaft 2, and the other side of the sealing O-shaped leather ring 502is attached to the end face of the sealing floating ring 501; a floating steel ring 5010 is arranged in the sealing floating ring 501, one side of the floating steel ring is attached to the end face of the sealing ring oil seal seat 502, and the other side of the floating steel ring is provided with a space for accommodating a sealing gasket 503; the floating steel ring 5010 and the sealing O-shaped ring 5020 are used for sealing the sealing between the floating ring 501 and the sealing ring oil seal seat 502 and the sealing between the spline output shaft 2 and the gearbox 1; the sealing gasket 503 is fixed in the sealing floating ring 501, and the other side of the sealing gasket abuts against the end face of the spline housing 4 and is used for axially positioning the sealing device 5;
the floating ring oil seal has the following advantages:
1) the sealing element does not generate abrasion, has reliable sealing, simple maintenance and convenient maintenance
2) It is not sensitive to the running state of the machine and has stable sealing performance.
3) The sealing structure is simple, and the multilayer floating ring only has the combination of the simple parts and has fewer mechanical sealing parts.
4) Because the sealing element is made of metal, the sealing element is resistant to high temperature.
5) A plurality of floating rings can be used in parallel to form a multi-layer floating ring, and high pressure of more than 10MPa can be effectively sealed.
6) The sealing device can be used for 10000-20000 r/min high-speed rotating fluid machinery, the allowable speed of the sealing device is as high as more than 100m/s, and the sealing device is incomparable with other sealing devices.
7) The floating ring can be used for sealing a strong corrosive medium as long as a corrosion-resistant metal material or a non-metal material (such as graphite) with a corrosion-resistant lining is used as the floating ring.
8) Because the liquid film is in the sealing gap, the friction power is extremely low, and the machine has higher efficiency.
Referring to fig. 6, the rotary blade shaft 3 is arranged on one side as follows to accommodate the spline housing 4: the outer wall of the rotary tillage blade rotating shaft 3 is uniformly provided with rotary tillage blades 300, and the output ends of the rotary tillage blades are connected with a disc 402 of a spline sleeve; the output end of the rotary tillage blade rotating shaft 3 is a rotating disk 301 which is integrally formed with the rotary tillage blade rotating shaft; the rotating disc 301 is matched with a disc 402 below the spline sleeve 4 and fixed together through bolts for transmitting torque; bolt holes through which bolts pass are formed in the corresponding positions of the rotating disc 301 and the disc 402, and the plurality of groups of bolt holes are arranged in an axisymmetric mode in the radial direction of the spline output shaft; the rotating disc 301 and the disc 402 are provided with arc-shaped slots 6 at corresponding positions for reducing the weight of the spline housing and the rotary blade rotating shaft.
In general, the speed change mechanism of the rotary cultivator is symmetrically arranged along the middle plane; the middle plane coincides with the middle position of the non-porous spline shaft 200; the rotary cultivator speed change mechanism comprises an output gear end, a non-porous spline shaft 200, a bearing 600, a sealing device 4, a spline sleeve 4 and a rotary tillage blade rotating shaft 3, wherein the output gear end is arranged above a speed change box body in sequence from the middle plane part along a single axial direction, the non-porous spline shaft is matched with the output gear end, the bearing 600 is used for fixing the non-porous spline shaft, the sealing device 4 is used for realizing sealing of the rotary cultivator speed change mechanism, the spline sleeve 4 is used for driving the torque of a spline output shaft 2 through the matching of a key 401 and a spline 23, and the rotary tillage blade rotating shaft 3 is used for driving the torque of the spline sleeve 4 through the matching of a rotating disc 301 and a disc 402.
The above-mentioned embodiments are only for convenience of description, and are not intended to limit the present invention in any way, and those skilled in the art will understand that the technical features of the present invention can be modified or changed by other equivalent embodiments without departing from the scope of the present invention.
Claims (7)
1. A speed change mechanism of a rotary cultivator comprises a gearbox, a spline output shaft and a rotary tillage blade rotating shaft, wherein the gearbox comprises a box body, an input shaft, a transmission shaft, an intermediate shaft and an output gear; the method is characterized in that: the spline output shaft is a nonporous spline shaft which is symmetrically arranged along the middle position; the outer wall of the middle part of the nonporous spline shaft is provided with external spline teeth which are arranged along the circumferential direction; the nonporous spline shaft sequentially comprises a spline tooth end, a smooth end, an involute spline end and a positioning end from the middle part along a single axial direction; the outer wall of the spline tooth end is provided with an upper outer spline tooth which is used for matching with an output gear internally accommodating a spline output shaft; the bearing and the sealing device are positioned outside the smooth end and are used for sealing the non-porous spline shaft; the involute spline end is provided with a spline with involute tooth profile and is used for connecting with a spline sleeve to transmit torque; the radial height of the positioning end is smaller than that of the involute spline end, and the outer wall of the positioning end is provided with clamp spring holes arranged along the circumferential direction; a spline output shaft clamp spring is accommodated in the clamp spring hole and used for limiting the axial direction of the spline output shaft;
the section of the spline housing is in a convex shape, a key matched with the spline is accommodated in the upper spline housing, and torque is transmitted through the matching of the key and the spline; a disc which is integrally formed with the upper spline housing is arranged below the spline housing; a shaft hole through which the spline output shaft passes is formed in the disc, and a circular groove is formed in the radial direction outside the shaft hole; a positioning gasket for limiting the spline output shaft clamp spring is accommodated in the groove; and a spline housing retainer ring is further arranged on the disc outside the groove and used for limiting the spline housing in the axial direction.
2. The speed change mechanism of the rotary cultivator of claim 1, wherein: the transmission shaft in the gearbox and two sides of the intermediate shaft are fixed in the box body through bearings; the input shaft is provided with a small bevel gear, the transmission shaft is provided with a large bevel gear and a transmission gear, and the intermediate shaft is provided with an intermediate gear; the small bevel gear and the large bevel gear are meshed to change the power direction and realize speed reduction, the transmission gear and the output gear are respectively meshed with the intermediate gear, and the transmission gear and the large bevel gear are coaxially arranged; the inner part of the output gear is matched and fixed with the spline output shaft through external spline teeth arranged on the outer side of the spline output shaft; the input shaft rotates to drive the transmission shaft, and then the spline output shaft is driven to rotate through the intermediate shaft.
3. The speed change mechanism of the rotary cultivator of claim 1, wherein: bolt holes through which bolts pass are formed in the corresponding positions of the rotating disc and the circular disc, and the plurality of groups of bolt holes are arranged in an axisymmetric mode in the radial direction of the spline output shaft; and arc-shaped grooves are further formed in the positions, corresponding to the rotary disc, of the rotary disc and used for reducing the weight of the spline sleeve and the rotary shaft of the rotary blade.
4. The speed change mechanism of the rotary cultivator of claim 1, wherein: two sides of the spline output shaft are fixed in the gearbox through bearings, and external spline teeth of the spline output shaft are matched with spline holes in an output gear of the gearbox to realize the transmission torque of the output gear and the spline output shaft.
5. The speed change mechanism of the rotary cultivator of claim 4, wherein: it is symmetrical about a mid-plane; the middle plane is superposed with the middle position of the non-porous spline shaft; the speed change mechanism of the rotary cultivator is characterized in that an output gear end above a speed change box body, a non-porous spline shaft which is matched with the output gear end, a bearing for fixing the non-porous spline shaft, a sealing device for realizing the sealing of the speed change mechanism of the rotary cultivator, a spline housing for driving the torque of an output shaft of the spline through the matching of a key and the spline, and a rotary tillage blade rotating shaft for driving the torque of the spline housing through the matching of a rotating disk and a disk are arranged in sequence along a single axial direction from a middle plane part.
6. The speed change mechanism of the rotary cultivator of claim 5, wherein: the rotary tillage blade is uniformly arranged on the outer wall of the rotary shaft of the rotary tillage blade, and the output end of the rotary tillage blade is connected with a disc of the spline housing; the output end of the rotary tillage blade rotating shaft is a rotating disk which is integrally formed with the rotary tillage blade rotating shaft; the rotating disc is matched with the round disc below the spline sleeve, and the rotating disc and the round disc are fixed together through bolts and are used for transmitting torque.
7. The speed change mechanism of the rotary cultivator of claim 5, wherein: the sealing device is a floating ring oil seal and comprises a sealing floating ring, a sealing ring oil seal seat and a sealing gasket; the sealing ring oil seal seat is fixedly provided with a sealing O-shaped leather ring, one side of the sealing O-shaped leather ring is fixed at the position of a bearing end arranged at two sides of the spline output shaft, and the other side of the sealing O-shaped leather ring is attached to the end surface of the sealing floating ring; a floating steel ring is arranged in the sealing floating ring, one side of the floating steel ring is attached to the end face of the sealing ring oil seal seat, and the other side of the floating steel ring is provided with a space for accommodating a sealing gasket; the floating steel ring and the sealing O-shaped ring are used for sealing the sealing between the spline output shaft and the gearbox between the floating ring and the sealing ring oil seal seat; the sealing gasket is fixed in the sealing floating ring, and the other side of the sealing gasket is abutted against the end face of the spline housing and used for axially positioning the sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947946.9A CN113632603A (en) | 2021-08-18 | 2021-08-18 | Speed change mechanism of rotary cultivator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947946.9A CN113632603A (en) | 2021-08-18 | 2021-08-18 | Speed change mechanism of rotary cultivator |
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| CN113632603A true CN113632603A (en) | 2021-11-12 |
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| CN202110947946.9A Pending CN113632603A (en) | 2021-08-18 | 2021-08-18 | Speed change mechanism of rotary cultivator |
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| CN206674447U (en) * | 2017-04-25 | 2017-11-28 | 高绪新 | A kind of dual-purpose rotary cultivator of floods and droughts |
| CN208490125U (en) * | 2018-05-10 | 2019-02-15 | 常州汉森机械有限公司 | In set rotary cultivator and its cutter shaft |
| CN209345501U (en) * | 2018-12-29 | 2019-09-06 | 湖南省农友机械集团有限公司 | A kind of drive mechanism and rotary cultivator |
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2021
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| CN206257180U (en) * | 2016-12-16 | 2017-06-16 | 安徽省金鹰农业机械装备有限公司 | A kind of splined shaft protector of rotary cultivator |
| CN206674447U (en) * | 2017-04-25 | 2017-11-28 | 高绪新 | A kind of dual-purpose rotary cultivator of floods and droughts |
| CN208490125U (en) * | 2018-05-10 | 2019-02-15 | 常州汉森机械有限公司 | In set rotary cultivator and its cutter shaft |
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Application publication date: 20211112 |