CN113417976A - Novel automatic gear shifting speed change assembly - Google Patents
Novel automatic gear shifting speed change assembly Download PDFInfo
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- CN113417976A CN113417976A CN202110818867.8A CN202110818867A CN113417976A CN 113417976 A CN113417976 A CN 113417976A CN 202110818867 A CN202110818867 A CN 202110818867A CN 113417976 A CN113417976 A CN 113417976A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 179
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
- F16H3/22—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially
- F16H3/30—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial
- F16H3/32—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable only axially with driving and driven shafts not coaxial and an additional shaft
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions
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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
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
- F16H2057/02056—Gearboxes for particular applications for vehicle transmissions for utility vehicles, e.g. tractors or agricultural machines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention provides a novel automatic gear shifting and speed changing assembly which comprises a power input shaft, a walking shaft for providing power for vehicle walking, and a transmission assembly between the power input shaft and the walking shaft, wherein the transmission assembly comprises a power transmission shaft synchronously rotating with the power input shaft, and the power transmission shaft is provided with a gear continuously meshed with the walking shaft and a gear shifting driving gear for controlling the power output of the gear. The problem that tractor full power shifted has been solved to this technique assembly, can also match the high horsepower engine simultaneously, has filled the market blank of domestic incapability production high horsepower tractor, and the power of this technique shifts the speed change assembly and still has to shift smoothly, do not have and pause and frustrate and feel, shifts the whole electrically controlled technique that adopts for operate simpler, can realize intelligent operation, unmanned driving.
Description
Technical Field
The invention relates to the technical field of mechanical transmission, in particular to a gearbox, and particularly relates to a novel automatic gear shifting and speed changing assembly.
Background
At present, the technical bottlenecks of the gearboxes of domestic tractors mainly focus on two points, one point is that a high-horsepower gearbox does not exist, and the other point is that an automatic gear shifting technology does not exist.
Through market research, the horsepower section of the domestic tractor is mainly concentrated below 220 horsepower, not because of insufficient power of an engine, but mainly because a gearbox matched with a high-horsepower engine is not arranged, and a plurality of tractor factories adopting the automatic gear shifting technology are also designed and researched, but are concentrated on a small horsepower section, so that the horsepower above 300 horsepower basically does not exist.
According to market research and analysis, except for a plurality of automatic-gear gearbox type tractors abroad, the so-called automatic-gear or power-shifting gearbox on the domestic market is actually automatic reversing and is not actually automatic shifting.
The conventional power gear shifting gearbox is strong in gear shifting pause and pause feeling, the gearbox leaks oil after long-term use, the service lives of the gearbox and an engine are shortened, power gear shifting is different from stepless speed change, how to realize gear shifting without stopping is an obvious mark of full-power gear shifting, and in this respect, the traditional tractor gearbox technology in China is difficult to realize.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a novel automatic gear shifting and speed changing assembly aiming at the defects in the prior art, the technical assembly solves the problem of full-power gear shifting of a vehicle, and can be matched with a high-horsepower engine, the market blank of a domestic incapability of producing a high-horsepower tractor is filled up, the power gear shifting and speed changing assembly of the technology also has smooth gear shifting and no pause feeling, the engine and a gearbox are protected, the oil leakage phenomenon of the engine and the gearbox is solved, the manual or electric control technology can be adopted in the whole gear shifting process, the electric control technology enables the operation to be simpler, and intelligent operation and unmanned driving can be realized.
The technical scheme includes that the novel automatic gear shifting and speed changing assembly comprises a power input shaft, a walking shaft for providing power for vehicle walking, a transmission assembly between the power input shaft and the walking shaft, wherein the transmission assembly comprises a power transmission shaft for realizing synchronous or clearance transmission with the power input shaft, a gear arranged on the power transmission shaft through a bearing, a gear shifting driving gear arranged on the power transmission shaft through a marking shaft, and a forward walking gear rotating synchronously with the walking shaft, the gear is continuously engaged with the forward walking gear, and the gear shifting driving gear can realize engagement and separation with the gear by axial movement.
Preferably, the number of the power transmission shafts is not less than two, and gears in the same gear on the power transmission shafts can provide power for the walking shafts independently or simultaneously.
Preferably, the gear shifting driving gear and the gear position gear are matched and transmitted through side surfaces.
Preferably, the gear gears comprise a plurality of gears, the gear shifting driving gear comprises a plurality of gears, and the gear shifting driving gear rotates synchronously with the power input shaft.
Preferably, the number of the power input shafts is not less than two, the power input shaft is provided with a driving gear for driving the power transmission shaft to rotate, and the power input shaft can continuously or/and alternately provide power for the power transmission shaft.
Preferably, the power input shafts are two and are respectively an inner shaft and an outer shaft, the inner shaft is sleeved on the outer shaft, and the driving gear is an inner shaft driving gear and an outer shaft driving gear which are respectively arranged at the tail end of the inner shaft and the tail end of the outer shaft.
Preferably, the power transmission shaft is provided with a transmission gear matched with the driving gear, namely a first transmission gear and a second transmission gear, and the transmission gear and the power transmission shaft rotate synchronously.
Preferably, the gear transmission device further comprises a low-gear transmission shaft, one of the plurality of gear gears is arranged on the low-gear transmission shaft and rotates synchronously with the low-gear transmission shaft, and a low-gear steering gear is arranged on the low-gear transmission shaft.
Preferably, the walking shafts are designed into two sections of structures and are respectively a first walking shaft and a second walking shaft, and a high-low gear sliding sleeve for controlling the first walking shaft and the second walking shaft to be separated and combined is arranged between the first walking shaft and the second walking shaft.
Preferably, a reverse gear is further arranged on the low-gear transmission shaft and is matched with a reverse gear traveling gear on the second traveling shaft through an intermediate gear.
The beneficial effects of the technical scheme are as follows: the problem that tractor full power shifted has been solved to this technique assembly, can also match the high horsepower engine simultaneously, has filled the market blank of domestic incapability production high horsepower tractor, and the power of this technique shifts the speed change assembly and still has to shift smoothly, do not have and pause and frustrate and feel, shifts the whole electrically controlled technique that adopts for operate simpler, can realize intelligent operation, unmanned driving.
Drawings
Fig. 1 is a structural schematic diagram (one) of the novel automatic gear shifting speed changing assembly.
Fig. 2 is a structural schematic diagram (two) of the novel automatic gear shifting speed changing assembly.
FIG. 3 is a schematic structural view of the novel automatic shifting transmission assembly (with the high and low range sliding sleeves and one of the moving sleeve portions removed).
Fig. 4 is a schematic view of the structure of the gear drive gear of fig. 1.
Detailed Description
For convenience of explanation, the novel automatic shifting transmission assembly of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, a novel automatic gear shifting and speed changing assembly comprises a power input shaft, a walking shaft for providing power for vehicle walking, a transmission assembly between the power input shaft and the walking shaft, wherein the transmission assembly comprises a power transmission shaft for realizing synchronous or clearance transmission with the power input shaft, a gear arranged on the power transmission shaft through a bearing, a gear shifting driving gear arranged on the power transmission shaft through a marking shaft, and a forward walking gear rotating synchronously with the walking shaft, the gear is continuously engaged with the forward walking gear, and the axial movement of the gear shifting driving gear can realize engagement and separation with the gear; the number of the power transmission shafts is not less than two, and gears in the same gear on the power transmission shafts can provide power for the walking shafts independently or simultaneously; the common high-horsepower tractor uses a double-power transmission shaft to act simultaneously, and the gear shifting driving gear and the gear are matched and transmitted through the side surface; the gear gears comprise a plurality of gears, the gear shifting driving gears comprise a plurality of gears, and the gear shifting driving gears and the power input shaft synchronously rotate; the power transmission device comprises at least two power input shafts, wherein the power input shafts are provided with driving gears for driving the power transmission shafts to rotate, and the power input shafts can continuously or/and alternately provide power for the power transmission shafts; the two power input shafts are respectively an inner shaft 1.2 and an outer shaft 1.1, the inner shaft 1.2 is sleeved on the outer shaft 1.1, and the driving gears are an inner shaft driving gear 2.2 and an outer shaft driving gear 2.1 which are respectively arranged at the tail end of the inner shaft and the tail end of the outer shaft; the power transmission shaft is provided with transmission gears matched with the driving gear, namely a first transmission gear 3.1 and a second transmission gear 3.2, and the transmission gears and the power transmission shaft synchronously rotate; the transmission device further comprises a low-gear transmission shaft 14, one of the gear gears is arranged on the low-gear transmission shaft 14 and rotates synchronously with the low-gear transmission shaft 14, and a low-gear direction changing gear 15 is arranged on the low-gear transmission shaft 14; the walking shaft is designed into a two-section structure and comprises a first walking shaft 5.1 and a second walking shaft 5.2 respectively, and a high-low gear sliding sleeve 13 for controlling the first walking shaft and the second walking shaft to be separated and combined is arranged between the first walking shaft 5.1 and the second walking shaft 5.2; a reverse gear 1 is further arranged on the low-gear transmission shaft 14, and the reverse gear 16 is matched with a reverse gear traveling gear 18 on the second traveling shaft 5.2 through an intermediate gear 17.
The working principle is as follows: engine power has connect the power input shaft of gearbox behind the clutch, and power input shaft includes two, is axle 1.2 and outer axle 1.1 in respectively, axle 1.2 suit is in outer axle 1.1 in interior, axle 1.2 end is equipped with interior axle drive gear 2.2 in interior, outer axle 1.1 end is equipped with outer axle drive gear 2.1.
Two sets of reverse-fit speed change systems are arranged in the gearbox, each reverse-fit speed change system comprises a power transmission shaft which is respectively a first power transmission shaft 3.1 and a second power transmission shaft 3.2, the first power transmission shaft 3.1 and the second power transmission shaft 3.2 are arranged in parallel, a first power transmission gear 4.1 meshed with an outer shaft driving gear 2.1 is connected onto the first power transmission shaft 3.1, a second power transmission gear 4.2 meshed with an inner shaft driving gear 2.2 is connected onto the second power transmission shaft 3.2, and the first power transmission gear 4.1 and the second power transmission gear 4.2 respectively drive the first power transmission shaft 3.1 and the second power transmission shaft 3.2 to rotate.
The first power transmission shaft 3.1 and the second power transmission shaft 3.2 are identical in structure.
The power transmission shaft is connected with a gear through a bearing, the power transmission shaft is connected with a gear shifting driving gear through a scribing tooth, the power transmission shaft is a scribing shaft, and the scribing shaft is sleeved with the gear shifting driving gear capable of axially moving along the power transmission shaft under the action of external force.
The walking mechanism is characterized by further comprising a walking shaft, wherein a forward gear is connected to the walking shaft, and the forward gear is continuously meshed with the gear.
In order to increase the high and low gears, the walking shaft comprises two sections, namely a first walking shaft 5.1 and a second walking shaft 5.2.
Taking a four-gear transmission case as an example, the four-gear transmission case comprises a first-gear 6.1, a second-gear 6.2, a third-gear 6.3 and a fourth-gear 6.4, and a first-gear forward gear 7.1, a second-gear forward gear 7.2, a third-gear forward gear 7.3 and a fourth-gear forward gear 7.4 which are continuously meshed with the first-gear forward gear 6.1, the second-gear forward gear 7.2, the third-gear forward gear 7.3 and the fourth-gear forward gear 7.4.
First power transmission axle 3.1 and second power transmission axle 3.2 are all connect one through the bearing and keep off gear 6.1, keep off gear 6.2 and three and keep off gear 6.3, all be equipped with two gear drive gears on first power transmission axle 3.1 and the second power transmission axle 3.2, respectively first gear drive gear 8.1 and second gear drive gear 8.2 of shifting, first gear drive gear 8.1 is located one and keeps off between gear 6.1 and two gear 6.2, and second drive gear is located between three gear 6.3 and four gear 6.4.
The engine transmits power to the power input shaft through the clutches, the inner shaft 1.2 and the outer shaft 1.1 of the power input shaft are respectively controlled through the two clutches, the first clutch controls the outer shaft 1.1, the second clutch controls the inner shaft 1.2, the clutches are electrically controlled clutches, after the vehicle starts the engine, the clutch is in a normally closed state (combination state), the inner shaft 1.2 and the outer shaft 1.1 rotate simultaneously, the inner shaft 1.2 and the outer shaft 1.1 drive the first power transmission shaft 3.1 and the second power transmission shaft 3.2 to rotate respectively through the inner shaft driving gear 2.2 and the outer shaft driving gear 2.1, because the gear gears are connected with the power transmission shafts through the bearings, therefore, in the rotating process of the power transmission shaft, all the gear gears stop rotating, only the gear-shifting driving gear which is arranged by matching the marking gear and the marking shaft rotates synchronously along with the power transmission shaft, that is, the first and second shift drive gears 8.1 and 8.2 on the first and second power transmission shafts 3.1 and 3.2 rotate simultaneously.
When a first gear needs to be engaged to start a vehicle to run, a first gear engaging switch is pressed, an electric signal provides a signal to a first clutch, the first clutch is separated, an outer shaft 1.1 stops rotating, a first power transmission shaft 3.1 stops, meanwhile, the electric signal provides an external force providing device for controlling a first gear shifting driving gear 8.1 to be engaged into the first gear, the external force providing device does not need to explain, a plurality of linear motion modes can be realized by electric control, such as an oil supply electromagnetic valve for controlling the oil cylinder piston to move left and right, an electric motor to rotate forwards and backwards and drive a rack or a connecting rod to move left and right, and the like, the external force providing device stirs the first gear shifting driving gear 8.1 towards one side of a first gear 6.1 through a stirring sleeve 9 outside the first gear shifting driving gear 8.1, after the external force providing device finishes acting, an electric signal is provided to the first clutch again, the first clutch is combined, the outer shaft 1.1 rotates, driving teeth 10 of the first gear shifting driving gear 8.1 enter driven main teeth 11 of the first gear 6.1, and the first gear 6.1 is driven to rotate by combining with the first gear, a driven auxiliary gear 12 is arranged outside the first gear 6.1, a first gear forward gear 7.1 is engaged on the driven auxiliary gear 12, the first gear forward gear 7.1 drives a traveling shaft to rotate, and the traveling shaft drives the vehicle to travel through a rear axle of the vehicle, namely the first gear engaging traveling is completed.
Similarly, when a gear is shifted, the first-gear shifting switch is pressed, the electric signal also gives a signal to the second clutch, the action on the second power transmission shaft 3.2 is the same as the action on the first power transmission shaft 3.1, the first-gear action is completed, the two clutches for shifting the first gear are simultaneously actuated, and the two first-gear driving gears 8.1 are simultaneously actuated to complete the first-gear shifting.
When a second gear needs to be engaged after a vehicle starts from a first gear, a second gear engaging switch is pressed, an electric signal gives a signal to a first clutch, the first clutch is separated, an outer shaft 1.1 stops rotating, a first power transmission shaft 3.1 stops rotating, a second power transmission shaft 3.2 does not stop rotating, a walking shaft still runs under the action of the second power transmission shaft 3.2, namely, non-stop gear shifting is realized in the process of engaging the second gear, and power gear shifting is also defined, so that after the first power transmission shaft 3.1 stops rotating, a first gear 6.1 on the first power transmission shaft 3.1 continues to rotate under the action of a first gear forward gear, the rotating speed of the first gear 6.1 is greater than that of a first gear driving gear 8.1 on the first power transmission shaft 3.1, and oblique openings of driving teeth and driven main teeth on the driving gear and gear are designed, so that the first gear 8.1 on the first power transmission shaft 3.1 is separated from the first gear 6.1 on the first power transmission shaft, finishing gear shifting, meanwhile, the electric signal gives a signal to an external force providing device, the external force providing device shifts a first gear shifting driving gear 8.1 on a first power transmission shaft 3.1 towards one side of a second gear 6.2 on the first power transmission shaft 3.1, after the shifting action is finished, a telecommunication signal is given to a first clutch again, the first clutch is combined, an outer shaft 1.1 drives the first power transmission shaft 3.1 to rotate, the first gear shifting driving gear 8.1 on the first power transmission shaft 3.1 is combined with the second gear 6.2 on the first power transmission shaft, the first gear shifting driving gear on the first power transmission shaft 3.1 drives the second gear 6.2 on the first power transmission shaft to rotate, a second forward gear is meshed on the second gear 6.2 on the first power transmission shaft 3.1, the second forward gear drives the second gear to rotate, because the rotating speed provided by the second gear 6.2 for the first gear is greater than the rotating speed provided by the first gear 6.1, the rotating speed of the first gear 6.1 on the second power transmission shaft 3.2 is greater than that of the first gear-shifting driving gear 8.1 on the second transmission shaft, so that the first gear-shifting driving gear 8.1 on the second power transmission shaft 3.2 can automatically separate from the first gear 6.1 on the second power transmission shaft 3.2, and automatic gear disengagement is realized.
When the first gear-shifting driving gear 8.1 on the first power transmission shaft 3.1 is combined with the second gear 6.2, a signal is sent to the second clutch, an electric signal is sent to the second clutch after gear disengagement, the second clutch is separated, the second power transmission shaft 3.2 stops rotating, the electric signal is sent to the external force providing device, the external force providing device drives the first gear-shifting driving gear 8.1 on the second power transmission shaft 3.2 to move towards one side of the second gear on the second power transmission shaft 3.2, the second gear engaging action of the second power transmission shaft 3.2 is completed, and the second gear walking is also that the two power transmission shafts simultaneously provide power for walking.
The whole gear shifting process is completed within 1 second, the electric signal control action is rapid, the working principle of the third gear and the fourth gear is the same as that of the first gear and the second gear, and the description is omitted.
High-low gear and reverse gear working principle: a first scribing tooth post 5.1.1 is arranged at the tail end of the first travelling shaft 5.1, a second scribing tooth ring 5.2.1 is arranged on one side, close to the first travelling shaft 5.1, of the reverse gear travelling gear 18, a scribing tooth sleeve 5.3 is arranged between the second scribing tooth ring 5.2.1 and the first scribing tooth post 5.1.1, and the scribing tooth sleeve 5.3 is sleeved on the second travelling shaft 5.2 and rotates synchronously; the high-low gear sliding sleeve 13 is sleeved on the first scribing tooth post 5.1.1, the second scribing tooth ring 5.2.1 and the scribing tooth sleeve 5.3 and can move along the axial direction of the walking shaft, internal teeth matched with the first scribing tooth post 5.1.1, the second scribing tooth ring 5.2.1 and the scribing tooth sleeve 5.3 are arranged inside the high-low gear sliding sleeve 13, and when the high-low gear sliding sleeve 13 moves to the rightmost side in the sliding process, high-low gear walking is achieved, namely the high-low gear sliding sleeve 13 is sleeved on the first scribing tooth post 5.1.1 and the scribing tooth sleeve 5.3; when the high-low gear sliding sleeve 13 moves to the middle and is only positioned on the scribing gear sleeve 13, the low gear walking is performed, and when the high-low gear sliding sleeve 13 moves to the leftmost side, the high-low gear sliding sleeve 13 is sleeved on the second scribing gear ring 5.2.1 and the scribing gear sleeve 5.3, mainly in order to separate the high-low gear sliding sleeve 13 from the low-gear change gear 15 and perform reverse gear walking.
The high-gear walking is specifically described as follows: the high-grade walking can also be called as normal running, a gear engaging switch is pressed down, an external force providing device controlled by an electric signal shifts the high-grade and low-grade sliding sleeve 13 to the rightmost side, the first walking shaft 5.1 and the second walking shaft 5.2 of the walking shafts are connected through the high-grade and low-grade sliding sleeve 13 in the walking process, namely, the high-grade and low-grade sliding sleeve 13 is sleeved on the first scribing tooth post 5.1.1 and the scribing tooth sleeve 5.3, the high-grade and low-grade sliding sleeve 13 combines the first walking shaft 5.1 and the second walking shaft 5.2 into coaxial rotation, and the walking of the tractor directly depends on the first walking shaft 5.1 and the second walking shaft 5.2 which rotate coaxially at the same speed to carry out power transmission.
Low gear walking is specifically described: when the low gear control key is pressed down, the external force providing device controlled by the electric signal shifts the high-low gear sliding sleeve 13 between the first walking shaft 5.1 and the second walking shaft 5.2 to act, the high-low gear sliding sleeve 13 is shifted to the scribing gear sleeve 5.3, at the moment, the first walking shaft 5.1 and the second walking shaft 5.2 are disconnected, and the power of the high-low gear sliding sleeve 13 comes from the low gear change gear 15.
Because the fourth gear 6.4 is continuously engaged with the fourth gear forward gear 7.4 on the first traveling shaft 5.1, the first traveling shaft 5.1 is in a rotating state and the fourth gear 6.4 is continuously in a rotating state under any one of the first gear to the fourth gear working states, because the fourth gear 6.4 is independently installed on the low gear transmission shaft 14 and is not connected with the power transmission shaft, the fourth gear 6.4 drives the low gear transmission shaft 14 to rotate reversely,
the four-gear 6.4 and the low-gear transmission shaft 14 can be fixedly designed, detachably designed or integrally designed, and are integrally forged to increase strength.
A low-gear change gear 15 is further arranged on the low-gear transmission shaft 14, the low-gear change gear 15 is sleeved on the low-gear transmission shaft 14 through a bearing, and a first driving gear ring 14.2 is arranged on one side, away from the fourth-gear 6.4, of the low-gear change gear 15; a reverse gear 16 is further arranged on the low-gear transmission shaft 14, the reverse gear 16 and the low-gear transmission shaft 14 rotate synchronously, and a second driving gear ring 14.1 is arranged on one side, close to the low-gear direction changing gear 15, of the reverse gear 16; the first and second driving ring gears 14.2, 14.1 are fitted with a moving sleeve 19 that can move over the first and second driving ring gears 14.2, 14.1.
The low-gear driving teeth 13.1 are arranged outside the high-low gear sliding sleeve 13, the high-low gear sliding sleeve 13 is only positioned on the scribing tooth sleeve 13 after moving axially, meanwhile, the moving sleeve 19 moves towards one side of the low-gear turning gear 15, the moving sleeve 19 is sleeved on the first driving gear ring 14.2 and the second driving gear ring 14.1, and low-speed walking can be realized by changing the transmission ratio through the size change of the gears.
Low-gear power transmission line: engine power output, through inner axle 1.2 and outer axle 1.1, then drive first power transmission axle 3.1 and second power transmission axle 3.2 rotation respectively through inner axle drive gear 2.2 and outer axle drive gear 2.1, then drive gear wheel rotation, gear wheel drives first walking axle 5.1 and rotates, first walking axle 5.1 transmits for low-gear transmission shaft 14 through four fender positive gears 7.4, low-gear transmission shaft 14 drives reverse gear 16 and rotates, because remove the cover 19 cover on first drive ring gear 14.2 and second drive ring gear 14.1, so drive low-gear change gear 15 and rotate, so drive low-gear change gear 15 and high-low gear sliding sleeve 13 cooperation, high-low gear sliding sleeve 13 drives second walking axle 5.2 and rotates, the vehicle realizes low-gear walking.
The reverse gear walking is specifically described: the technical scheme is also provided with a reverse gear, when the reverse gear is needed to be engaged, a reverse gear control key is pressed down, an external force providing device controlled by an electric signal drives a moving sleeve 19 which is sleeved on a first driving gear ring 14.2 and a second driving gear ring 14.1 to move leftwards, namely the moving sleeve 19 is only positioned on the second driving gear ring 14.1, a low-gear steering gear 15 loses power, because a reverse gear walking gear 18 where the second scribing gear ring 5.2.1 is positioned is connected with a second walking shaft 5.2 through a bearing, when the reverse gear control key is pressed down, the external force providing device controlled by the electric signal drives a high-low-gear sliding sleeve 13 to move leftwards, so that the high-low-gear sliding sleeve 13 is sleeved on the second scribing gear ring 5.2.1 and a scribing gear sleeve 5.3, the reverse gear walking gear 18 and the second walking shaft 5.2 rotate synchronously, a reverse gear transmission shaft 16 turns in the same direction as the low-gear transmission shaft 14, and the low-gear transmission shaft 14 turns in the opposite direction to the first walking shaft 5.1, in order to provide reverse rotation power, an intermediate wheel 17 is matched on the reverse gear 16, and the intermediate wheel 17 is meshed with a reverse gear traveling gear 18 arranged on the second traveling shaft 5.2 to provide reverse rotation for traveling of the vehicle, so that the vehicle can be backed;
reverse power transmission line: the engine power output, through inner axle 1.2 and outer axle 1.1, then drive first power transmission axle 3.1 and second power transmission axle 3.2 rotation respectively through inner axle drive gear 2.2 and outer axle drive gear 2.1, then drive gear rotation, gear drives first walking axle 5.1 and rotates, first walking axle 5.1 transmits for low-gear transmission shaft 14 through four fender positive going gears 7.4, low-gear transmission shaft 14 drives reverse gear 16 and rotates, reverse gear 16 drives idle gear 17 and rotates, idle gear 17 drives reverse gear walking gear 18 and rotates, drive second walking axle 5.2 through high-low gear sliding sleeve 13 and rotate, the vehicle realizes the backward gear walking.
The reverse gear transmission systems are also arranged in parallel, and when a reverse gear control key is pressed down, the two moving sleeves 19 respectively positioned on the first driving gear ring 14.2 and the second driving gear ring 14.1 act simultaneously.
The power transmission shaft is provided with a scribing shaft which can drive the driving gear to rotate and can realize axial movement of the shifting driving gear, the inner ring of the shifting driving gear connected with the power transmission shaft is provided with scribing teeth matched with the scribing shaft, the gear is connected with the transmission shaft through a bearing, the radial end face of the shifting driving gear close to the gear is provided with driving teeth 10 protruding outwards, the radial end face of the gear close to the driving gear is provided with driven main teeth 11 matched with the driving teeth, the driven main teeth 11 are structures protruding outwards arranged on the end face of the gear, or the driven main teeth are structures recessed inwards on the end face of the gear, according to the size of the gear, when the diameter of the gear is smaller, the driven main teeth which are recessed inwards are difficult to arrange, and the driven main teeth 11 can be designed into structures protruding outwards, the gear shifting outer ring is provided with driven auxiliary teeth 12, the driven auxiliary teeth 12 are meshed with the walking forward gear, the driving gear outer ring is provided with a shifting sleeve 9, the shifting sleeve 9 is in sliding connection with the gear shifting driving gear, the driving gear is in an annular array on the end face of the gear shifting driving gear, and the driven main teeth are in an annular array on the end face of the gear shifting gear.
In addition, it should be noted that although the transmission described in the embodiments is directed to a high-horsepower tractor, which is generally about 300 horsepower or even higher, in order to improve strength, two power transmission shafts are used to simultaneously act on the traveling shaft and simultaneously provide power for the traveling shaft, if the strength of one power transmission shaft is satisfied, specifications of the gears arranged on the first power transmission shaft 3.1 and the second power transmission shaft 3.2 may be changed, so as to implement multi-gear curve shifting, that is, the numbers of teeth or diameters of the first gear 6.1 to the fourth gear 6.4 on the first power transmission shaft 3.1 and the second power transmission shaft 3.2 are all different, and each gear individually drives a forward traveling gear during traveling.
Through the change, although only four gears are provided, when the walking is controlled by a high gear and a low gear, eight forward gears with different speed per hour can be formed, and the reverse gear is also driven by the four previous gears, so that the reverse gear comprises four reverse gears with different speed per hour.
The electric signal control system has already reported invention patents three years ago and is authorized, the technology known in the art is used for controlling the action of the external force providing device by intelligent signals, for example, in the assembly line operation, a signal is generated after an article is touched to an electric control switch at a certain position where the article walks, and the PLC control system receives the signal and then sends out a signal for controlling the action of a certain unit, which is not repeated again.
While the preferred embodiments of the present invention have been described in detail, it should be apparent that many changes can be made within the inventive concept of the present invention, and it is intended that all changes that can be made within the inventive concept of the present invention are encompassed by the present invention.
Claims (10)
1. The utility model provides a novel automatic speed change assembly that shifts, includes power input shaft, the walking axle that provides power, power input shaft and the transmission assembly between the walking axle, characterized by: the transmission assembly comprises a power transmission shaft which realizes synchronous or clearance transmission between power input shafts, a gear which is arranged on the power transmission shaft through a bearing, a gear shifting driving gear which is arranged on the power transmission shaft through a spline shaft, and a forward traveling gear which synchronously rotates with the traveling shaft, wherein the gear is continuously meshed with the forward traveling gear, and the axial movement of the gear shifting driving gear can realize the meshing and the separation with the gear.
2. The new automatic shifting transmission assembly of claim 1, wherein: the number of the power transmission shafts is not less than two, and gear gears on the power transmission shafts can provide power for the walking shafts independently or simultaneously.
3. The new automatic shifting transmission assembly of claim 1, wherein: and the gear shifting driving gear and the gear are matched and driven through the side surface.
4. The new automatic shifting transmission assembly of claim 1, wherein: the gear wheel comprises a plurality of gears, the gear-shifting driving gear comprises a plurality of gears, and the gear-shifting driving gear and the power transmission shaft synchronously rotate.
5. The new automatic shifting transmission assembly of claim 1, wherein: the power transmission device is characterized in that the number of the power input shafts is not less than two, a driving gear for driving the power transmission shaft to rotate is arranged on the power input shaft, and power can be continuously or alternatively provided for the power transmission shaft on the power input shaft.
6. The new automatic shifting transmission assembly of claim 5, wherein: the power input shafts are two and are respectively an inner shaft and an outer shaft, the inner shaft is sleeved on the outer shaft, and the driving gears are an inner shaft driving gear and an outer shaft driving gear which are respectively arranged at the tail end of the inner shaft and the tail end of the outer shaft.
7. The new automatic shifting transmission assembly of claim 6, wherein: and the power transmission shaft is provided with a transmission gear matched with the driving gear, namely a first transmission gear and a second transmission gear, and the transmission gear and the power transmission shaft synchronously rotate.
8. The new automatic shifting transmission assembly of claim 4, wherein: the gear transmission mechanism is characterized by further comprising a low-gear transmission shaft, one of the gear gears is arranged on the low-gear transmission shaft and rotates synchronously with the low-gear transmission shaft, and a low-gear steering gear is arranged on the low-gear transmission shaft.
9. The new automatic shifting transmission assembly of claim 1, wherein: the walking shaft is designed into two sections of structures and is respectively a first walking shaft and a second walking shaft, and a high-low gear sliding sleeve for controlling the first walking shaft and the second walking shaft to be separated and combined is arranged between the first walking shaft and the second walking shaft.
10. The new automatic shifting transmission assembly of claim 6, wherein: and a reverse gear is also arranged on the low-gear transmission shaft and is matched with a reverse gear walking gear on the second walking shaft through an intermediate wheel.
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| CN202110818867.8A CN113417976B (en) | 2021-07-20 | 2021-07-20 | Novel automatic gear shifting speed change assembly |
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| CN202110818867.8A CN113417976B (en) | 2021-07-20 | 2021-07-20 | Novel automatic gear shifting speed change assembly |
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| CN113417976B CN113417976B (en) | 2024-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116733177A (en) * | 2023-06-02 | 2023-09-12 | 上海庆繁智能遮阳技术有限公司 | Rolling screen with tensioning device |
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| CN116733177A (en) * | 2023-06-02 | 2023-09-12 | 上海庆繁智能遮阳技术有限公司 | Rolling screen with tensioning device |
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| CN113417976B (en) | 2024-06-25 |
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