CN107816535B - Gear box structure of cultivator - Google Patents
Gear box structure of cultivator Download PDFInfo
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- CN107816535B CN107816535B CN201711190816.5A CN201711190816A CN107816535B CN 107816535 B CN107816535 B CN 107816535B CN 201711190816 A CN201711190816 A CN 201711190816A CN 107816535 B CN107816535 B CN 107816535B
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- gear
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- intermediate shaft
- transmission
- power output
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- 230000005540 biological transmission Effects 0.000 claims abstract description 104
- 230000008859 change Effects 0.000 claims abstract description 36
- 230000007935 neutral effect Effects 0.000 claims abstract description 15
- 210000000078 claw Anatomy 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005457 optimization Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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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
- 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
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
Abstract
The invention discloses a gearbox structure of a cultivator, which comprises a box body, a power input shaft and a power output shaft, wherein the power input shaft is rotatably arranged on the box body, and the power output shaft is parallel to the power input shaft and is in transmission connection; a second-gear transmission gear train is arranged between the power input shaft and the power output shaft and used for driving the power output shaft to rotate forward at a second-gear rotating speed; a first-gear transmission gear train is respectively arranged between the intermediate shaft and the power output shaft and used for driving the power output shaft to rotate forward and backward at a first-gear rotating speed; the intermediate shaft is provided with at least a partial idle section, and the idle section can be opposite to the speed change gear to form a neutral gear. The invention has the advantages of simple and compact structure, more reasonable power transmission, adaptability to various additional machines and tools and capability of improving the working efficiency.
Description
Technical Field
The invention relates to the technical field of gearboxes; in particular to a gear box structure of a cultivator.
Background
At present, with the acceleration of the modern agricultural process in China, agricultural machines such as cultivator and the like are increasingly popular as machine equipment capable of greatly reducing the labor intensity of farmers. The cultivator and motorcycle are driven to produce corresponding cultivation and walking actions by rotating the crankshaft of the engine, converting the speed of the gearbox to produce different rotation speeds, and transmitting the power to the next cultivation device or/and walking device via the output shaft.
The rear-mounted cultivator of the prior art generally has a structure of a traveling drive transmission having a neutral gear, two or more forward gears, and one or more reverse gears. The multi-gear design with more than two forward gears can simultaneously meet cultivation efficiency and transfer speed, but has complex structure and high manufacturing cost; or the gear design of only two forward gears is simple in structure, but the second gear speed is low, and the transition speed is too slow. And the reverse gear of the cultivator in the prior art is operated in a different mode from the forward gear, so that the transfer speed and the cultivation efficiency are further influenced.
Chinese patent (CN 103291853 a) discloses a power structure of an engine gearbox body, in which an intermediate shaft and a power output shaft are provided; the intermediate shaft is two-section and consists of a first intermediate shaft section and a second intermediate shaft section which are not directly connected; when the engine rotates, the first intermediate shaft section is driven to rotate; a gear is arranged on the first intermediate shaft section, an inner tooth groove of the gear is combined with an outer tooth groove at the tail end of the first intermediate shaft section, and the first intermediate shaft section drives the gear to rotate; a first duplex gear is arranged on the second intermediate shaft section; the gear is connected with a rotating speed switching push rod, and the rotating speed switching push rod drives the gear to move leftwards and rightwards on the first intermediate shaft section and drives the second intermediate shaft section to rotate through different power transmission structures. According to the power structure, the middle shaft of the gearbox body is two sections, and can be used as a power output shaft according to the requirement to directly output high and low two-gear rotating speeds, so that a plurality of additional machines can be driven to work; the intermediate shaft has high and low two-gear rotating speeds, is meshed with gears with different gears of the power output shaft, and the power output shaft has more output gears. In the design of the invention, however, the intermediate shaft is of two sections of axially adjacent structures, and the two sections of intermediate shafts are directly driven by the gear and the tooth slot, so that the two sections of intermediate shafts are easy to distort and deform when power is transmitted in such a driving mode, and the power transmission is unreasonable; secondly, the manufacturing cost of the multi-gear structure is high; furthermore, the structure is shifted and is required to operate the high-low rotation speed switching push rod and the gear switching rod to select the forward gear and the reverse gear, and a reverse gear handle is required to be additionally operated, so that the structure is relatively complex to operate. Therefore, the power structure of the engine gearbox body meets the requirements of cultivation efficiency and transfer speed, but is not simple enough to operate and high in manufacturing cost.
Therefore, how to provide a gearbox structure which has a simple and compact structure, is more reasonable in power transmission, can adapt to various additional machines and tools, and can improve the working efficiency is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a simple and compact structure, the power transmission is more reasonable, can adapt to multiple additional machines, can improve the cultivator gearbox structure of operating efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a cultivator gearbox structure, including the box, rotatable power input shaft and the parallel and transmission connection's of power input shaft of installing on the box power output shaft, but the last axial sliding of relying on key cooperation is provided with the gear shift, the last corresponding gear shift of box is provided with the shift fork, shift fork and gear shift instruction input mechanism link to each other and can stir the gear shift to different gear along axial displacement on the power output shaft, at least have more than two gear be effective output gear, gear shift can with the gear input gear meshing of each effective output gear when axial displacement arrives different effective output gear, each gear input gear is used for being connected to outside action execution component through the gear drive mechanism transmission of different transmission ratios; the power transmission device is characterized by further comprising an intermediate shaft which is rotatably arranged on the box body and is parallel to or coaxial with the power input shaft, wherein an intermediate shaft transmission gear train is arranged between the power input shaft and the intermediate shaft and used for driving the intermediate shaft to rotate in the same direction; a second-gear transmission gear train is arranged between the power input shaft and the power output shaft and used for driving the power output shaft to rotate forward at a second-gear rotating speed; a first-gear transmission gear train is arranged between the intermediate shaft and the power output shaft and used for driving the power output shaft to rotate forward at a first-gear rotating speed; a reverse transmission gear train is further arranged between the intermediate shaft and the power output shaft and used for driving the power output shaft to rotate reversely; the intermediate shaft is provided with at least a partial idle section, and the idle section can be opposite to the speed change gear to form a neutral gear.
In the technical scheme, a power input shaft is in transmission connection with an intermediate shaft through an intermediate shaft transmission gear train; the power input shaft is in transmission connection with the power output shaft through a second-gear transmission gear train, and a second-gear output is formed on the power output shaft; a first gear output is formed on the power output shaft through a first gear transmission gear train arranged between the intermediate shaft and the power output shaft; the intermediate shaft and the power output shaft form reverse gear output through a reverse gear transmission gear train arranged between the intermediate shaft and the power output shaft; the intermediate shaft is also provided with an empty neutral gear section; thus, four gears of first gear, second gear, reverse gear and neutral gear are formed on the power output shaft; when the gearbox structure is applied to a cultivator, the first gear is slower in speed and can be used as a cultivation working gear, the second gear is used as a gear used during transfer, transfer cultivation is needed after cultivation, the second gear is used as a gear used during transfer, transfer time can be saved, and working efficiency is improved. The second gear is used as a high-speed gear, is directly transmitted by the power input shaft and the power output shaft and is output from the power output shaft, and the output mode is more efficient and the power transmission is more reasonable because the load of the cultivator is small during the transition and only traction force during the walking is needed to be provided; when the first gear and the reverse gear are used, power is input from the power input shaft and is transmitted to the power output shaft after being transmitted through the intermediate shaft, and the first gear and the reverse gear are used for cultivation, so that the cultivator has larger load during cultivation, and is transmitted to the power output shaft for output after being transmitted through the intermediate shaft, and the output mode is more efficient and the power transmission is more reasonable.
As optimization, the intermediate shaft transmission gear train comprises a power input gear fixedly sleeved on the power input shaft and a duplex gear sleeved on the power output shaft in an empty mode, wherein the duplex gear is provided with two external teeth which are arranged in parallel and are respectively meshed with the power input gear and an intermediate shaft driven gear in transmission connection with the intermediate shaft.
In this way, the power input shaft inputs power to the duplex gear which is sleeved on the power output shaft through the power input gear arranged on the power input shaft, and the duplex gear transmits the power to the intermediate shaft driven gear of the intermediate shaft; the duplex gear is arranged on the power output shaft in an empty sleeve mode, so that the space required by additionally arranging one shaft in the box body can be saved, the space-saving effect can be achieved, the manufacturing cost is reduced, and meanwhile, the structure is compact. Secondly, the power input shaft is directly in transmission connection with the intermediate shaft relative to the power input shaft, so that the effect of protecting the intermediate shaft and the power input shaft is achieved, and the torque born by the power input shaft and the intermediate shaft is smaller; meanwhile, the output mode is more efficient, and the power transmission is more reasonable.
As optimization, the second-gear transmission gear train comprises the duplex gear, one end face of the duplex gear is provided with a driving claw disc, one end, opposite to the driving claw disc, of the speed change gear is provided with a driven claw disc, and the shifting fork can shift the speed change gear to move along the axial direction of the power output shaft so that the driving claw disc and the driven claw disc are meshed for transmission.
Therefore, the driving claw disc arranged on the end face of the duplex gear is directly used for carrying out matched transmission with the driven claw disc arranged on the end face of the speed change gear, and one gear is saved compared with a mode of carrying out transmission by using a pair of gears. And the transmission structure is simple and compact, and the connection and disconnection of the transmission are convenient to realize.
As optimization, the first-gear transmission gear train comprises a first-gear driving gear fixedly sleeved on the intermediate shaft, and the shifting fork can shift the speed change gear to move along the axial direction of the power output shaft so that the speed change gear and the first-gear driving gear are meshed for transmission.
Therefore, the structure is simple and compact, the transmission connection is carried out by adopting a pair of gears, and the transmission efficiency is high.
As optimization, the reverse gear transmission gear train comprises a reverse gear driving gear fixedly sleeved on the intermediate shaft, the reverse gear driving gear is in meshed transmission with a reverse gear reversing gear rotatably arranged on the box body, and the shifting fork can shift the speed change gear to move along the axial direction of the power output shaft so that the speed change gear is in meshed transmission with the reverse gear reversing gear.
Thus, the structure is simple and compact, and the transmission efficiency is high.
As optimization, the first gear driving gear and the reverse gear driving gear are arranged at intervals, the part between the first gear driving gear and the reverse gear driving gear on the intermediate shaft is an empty section, and the shifting fork can shift the speed change gear to move along the axial direction of the power output shaft so that the speed change gear and the empty section on the intermediate shaft are opposite to form an empty gear.
Like this, the empty section that realizes the neutral gear sets up between first gear driving gear and the reverse gear driving gear on the jackshaft, and is more convenient when actual gear operation to set up like this and can also make the overall arrangement more reasonable, compacter, practice thrift the space of box, reduce the required space volume of installing whole gearbox body structure.
Preferably, the intermediate shaft is arranged coaxially with the power input shaft.
Therefore, the coaxiality of the power input shaft and the intermediate shaft is better, the axial size of the box body for installing the power input shaft and the intermediate shaft is reduced, the whole structure is more compact, and the arrangement is more reasonable; simultaneously, the space size of the whole box body is reduced, and the box body is convenient to install and carry.
As optimization, a connecting hole is formed in one end, opposite to the intermediate shaft, of the power input shaft, and the axis of the connecting hole is overlapped with the axis of the power input shaft; the intermediate shaft is opposite to one end of the connecting hole and is rotatably inserted and matched in the connecting hole, a bearing is arranged between the connecting hole and the intermediate shaft, an inner ring of the bearing is fixedly sleeved on the intermediate shaft, and an outer ring of the bearing is fixedly clamped on the inner peripheral wall of the connecting hole.
Therefore, the coaxiality of the power input shaft and the intermediate shaft is better, the axial size of the box body for installing the power input shaft and the intermediate shaft is reduced, the whole structure is more compact, and the arrangement is more reasonable; simultaneously, the space size of the whole box body is reduced, and the installation and the transportation are convenient.
As optimization, one end of the intermediate shaft, which is far away from the power input shaft, is in transmission connection with a shaft coupling, a groove which is in a ring shape as a whole is formed in the circumferential surface of the shaft coupling, a deflector rod is arranged along the depth direction of the groove, one end of the deflector rod extends into the groove, and the other end of the deflector rod is connected with a deflector rod control mechanism and is used for driving the deflector rod to move along the axial direction of the intermediate shaft.
Thus, the intermediate shaft is provided with a power output end, so that the auxiliary machine can adapt to various additional machines; the device is convenient to connect with external action execution equipment; and the power transmission is carried out by adopting the coupler, so that the transmission efficiency is high, and the power transmission and disconnection can be conveniently realized. The shift lever inserted into the groove of the coupler is adopted to drive the coupler to move along the axial direction of the intermediate shaft, and the coupler has the advantages of simple structure and convenient control.
As the optimization, driving lever control mechanism includes the control lever, the control lever is parallel to jackshaft setting and can follow self axial slidable and install on the box, the one end of control lever with the driving lever links to each other, and the control lever still links to each other with the control lever is fixed, the control lever links to each other with power take off operating mechanism and can drive the shaft coupling and be in interlock or two kinds of operating condition of separation.
Thus, the deflector rod control mechanism has the advantage of simple structure, and the deflector rod can realize automatic resetting. Is convenient to operate and use.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a cross-sectional view A-A of fig. 2.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings.
The specific implementation method comprises the following steps: as shown in fig. 1 to 3, a transmission structure of a cultivator comprises a case 1, a power input shaft 2 rotatably mounted on the case 1, and a power output shaft 3 parallel to the power input shaft 2 and in transmission connection, wherein a speed change gear 4 is axially slidably arranged on the power output shaft 3 by means of key fit, a shifting fork 5 is arranged on the case 1 corresponding to the speed change gear 4, the shifting fork 5 is connected with a gear shifting instruction input mechanism and can shift the speed change gear 4 to different gears along the axial direction on the power output shaft 3, at least more than two gears are effective output gears, the speed change gear 4 can be meshed with gear input gears of each effective output gear when being axially shifted to different effective output gears, and each gear input gear is used for being in transmission connection to an external action executing member through a gear transmission mechanism with different transmission ratios; the power input device is characterized by further comprising an intermediate shaft 6 which is rotatably arranged on the box body 1 and is parallel to or coaxial with the power input shaft 2, wherein an intermediate shaft transmission gear train is arranged between the power input shaft 2 and the intermediate shaft 6 and used for driving the intermediate shaft 6 to rotate in the same direction; a second-gear transmission gear train is arranged between the power input shaft 2 and the power output shaft 3 and used for driving the power output shaft 3 to rotate forward at a second-gear rotating speed; a first-gear transmission gear train is arranged between the intermediate shaft 6 and the power output shaft 3 and used for driving the power output shaft 3 to rotate forward at a first-gear rotating speed; a reverse gear transmission gear train is further arranged between the intermediate shaft 6 and the power output shaft 3 and used for driving the power output shaft 3 to rotate reversely; at least a partial recess is provided on the intermediate shaft 6, which recess can be brought into a neutral position directly opposite the transmission gear 4.
In the technical scheme, a power input shaft is in transmission connection with an intermediate shaft through an intermediate shaft transmission gear train; the power input shaft is in transmission connection with the power output shaft through a second-gear transmission gear train, and a second-gear output is formed on the power output shaft; a first gear output is formed on the power output shaft through a first gear transmission gear train arranged between the intermediate shaft and the power output shaft; the intermediate shaft and the power output shaft form reverse gear output through a reverse gear transmission gear train arranged between the intermediate shaft and the power output shaft; the intermediate shaft is also provided with an empty neutral gear section; thus, four gears of first gear, second gear, reverse gear and neutral gear are formed on the power output shaft; when the gearbox structure is applied to a cultivator, the first gear is slower in speed and can be used as a cultivation working gear, the second gear is used as a gear used during transfer, transfer cultivation is needed after cultivation, the second gear is used as a gear used during transfer, transfer time can be saved, and working efficiency is improved. The second gear is used as a high-speed gear, is directly transmitted by the power input shaft and the power output shaft and is output from the power output shaft, and the output mode is more efficient and the power transmission is more reasonable because the load of the cultivator is small during the transition and only traction force during the walking is needed to be provided; when the first gear and the reverse gear are used, power is input from the power input shaft and is transmitted to the power output shaft after being transmitted through the intermediate shaft, and the first gear and the reverse gear are used for cultivation, so that the cultivator has larger load during cultivation, and is transmitted to the power output shaft for output after being transmitted through the intermediate shaft, and the output mode is more efficient and the power transmission is more reasonable.
In this specific embodiment, the intermediate shaft transmission gear train includes a power input gear 7 fixedly sleeved on the power input shaft 2 and a duplex gear 8 sleeved on the power output shaft 3, where the duplex gear 8 has two external teeth arranged in parallel and respectively meshed with the power input gear 7 and an intermediate shaft driven gear 9 in transmission connection with the intermediate shaft 6.
In this way, the power input shaft inputs power to the duplex gear which is sleeved on the power output shaft through the power input gear arranged on the power input shaft, and the duplex gear transmits the power to the intermediate shaft driven gear of the intermediate shaft; the duplex gear is arranged on the power output shaft in an empty sleeve mode, so that the space required by additionally arranging one shaft in the box body can be saved, the space-saving effect can be achieved, the manufacturing cost is reduced, and meanwhile, the structure is compact. Secondly, the power input shaft is directly in transmission connection with the intermediate shaft relative to the power input shaft, so that the effect of protecting the intermediate shaft and the power input shaft is achieved, and the torque born by the power input shaft and the intermediate shaft is smaller; meanwhile, the output mode is more efficient, and the power transmission is more reasonable.
In this specific embodiment, the second gear transmission gear train includes the duplex gear 8, and one end face of the duplex gear 8 has a driving claw disc, one end of the speed change gear 4 opposite to the driving claw disc has a driven claw disc, and the shift fork 5 can shift the speed change gear 4 along the axial direction of the power output shaft 3 so that the driving claw disc and the driven claw disc mesh and drive.
Therefore, the driving claw disc arranged on the end face of the duplex gear is directly used for carrying out matched transmission with the driven claw disc arranged on the end face of the speed change gear, and one gear is saved compared with a mode of carrying out transmission by using a pair of gears. And the transmission structure is simple and compact, and the connection and disconnection of the transmission are convenient to realize.
In this specific embodiment, the first-gear transmission gear train includes a first-gear driving gear 10 fixedly sleeved on the intermediate shaft 6, and the shifting fork 5 can shift the speed change gear 4 along the axial direction of the power output shaft 3 so that the speed change gear 4 and the first-gear driving gear are meshed for transmission.
Therefore, the structure is simple and compact, the transmission connection is carried out by adopting a pair of gears, and the transmission efficiency is high.
In this specific embodiment, the reverse gear transmission gear train includes a reverse gear driving gear 11 fixedly sleeved on the intermediate shaft 6, the reverse gear driving gear 11 is in meshed transmission with a reverse gear reversing gear 12 rotatably installed on the box 1, and the shift fork 5 can shift the speed change gear 4 along the axial direction of the power output shaft 3 so that the speed change gear 4 is in meshed transmission with the reverse gear reversing gear 12.
Thus, the structure is simple and compact, and the transmission efficiency is high.
In this embodiment, the first gear driving gear 10 and the reverse gear driving gear 11 are arranged at intervals, and a portion between the first gear driving gear 10 and the reverse gear driving gear 11 on the intermediate shaft 6 is an idle section, and the shift fork 5 can shift the speed change gear 4 along the axial direction of the power output shaft 3 so that the speed change gear 4 and the idle section on the intermediate shaft 6 are opposite to form a neutral gear.
Like this, the empty section that realizes the neutral gear sets up between first gear driving gear and the reverse gear driving gear on the jackshaft, and is more convenient when actual gear operation to set up like this and can also make the overall arrangement more reasonable, compacter, practice thrift the space of box, reduce the required space volume of installing whole gearbox body structure.
In this embodiment, the intermediate shaft 6 is disposed coaxially with the power input shaft 2.
In this way, the radial required size of the box body for installing the power input shaft, the intermediate shaft and the power output shaft can be reduced, and the parts inside the box body are more compact; simultaneously, the space size of the whole box body is reduced, and the installation and the transportation are convenient.
In the specific embodiment, a connecting hole is formed in one end, opposite to the intermediate shaft 6, of the power input shaft 2, and the axis of the connecting hole is overlapped with the axis of the power input shaft 2; the intermediate shaft 6 is rotatably inserted and matched in the connecting hole at the end opposite to the connecting hole, a bearing 13 is arranged between the connecting hole and the intermediate shaft 6, an inner ring of the bearing 13 is sleeved on the intermediate shaft 6, and an outer ring of the bearing 13 is clamped on the inner peripheral wall of the connecting hole.
Therefore, the coaxiality of the power input shaft and the intermediate shaft is better, the axial size of the box body for installing the power input shaft and the intermediate shaft is reduced, the whole structure is more compact, and the arrangement is more reasonable; simultaneously, the space size of the whole box body is reduced, and the box body is convenient to install and carry. In specific implementation, the needle bearing is adopted, and only the retainer and the needle roller part of the needle bearing are reserved, so that the needle roller of the needle bearing is directly in rolling fit with the outer peripheral surface of the intermediate shaft and the inner peripheral wall of the connecting hole.
In this embodiment, the one end of jackshaft 6 that deviates from power input shaft 2 is transmitted and is connected with shaft coupling 14, is provided with the whole annular recess that is on the circumference surface of shaft coupling 14, and the driving lever 15 that sets up along recess depth direction, the one end of driving lever 15 stretches into inside the recess, the other end of driving lever 15 links to each other with driving lever control mechanism and is used for driving lever 15 along the axial movement of jackshaft 6.
Thus, the intermediate shaft is provided with a power output end, so that the auxiliary machine can adapt to various additional machines; the device is convenient to connect with external action execution equipment; and the power transmission is carried out by adopting the coupler, so that the transmission efficiency is high, and the power transmission and disconnection can be conveniently realized. The shift lever inserted into the groove of the coupler is adopted to drive the coupler to move along the axial direction of the intermediate shaft, and the coupler has the advantages of simple structure and convenient control.
In this specific embodiment, the lever control mechanism includes a control lever 16, where the control lever 16 is parallel to the intermediate shaft 6 and is slidably mounted on the case 1 along the axial direction of the control lever 16, one end of the control lever 16 is connected to the lever 15, the control lever 16 is also fixedly connected to a control lever 17, and the control lever 17 is connected to the power output control mechanism and can drive the coupling 14 to be in two working states of engagement or disengagement.
Thus, the deflector rod control mechanism has the advantage of simple structure, and the deflector rod can realize automatic resetting. Is convenient to operate and use.
In this embodiment, driving lever control mechanism still includes control lever canceling release mechanical system, control lever canceling release mechanical system is including the cover establishes the reset spring at the other end of control lever, has the shoulder that pastes the support mutually with reset spring inner on the control lever, and reset spring's outer end extends the terminal surface setting of control lever and supports tightly on the inner wall with the box. Therefore, the coupler can be automatically reset under the action of the deflector rod control mechanism, and can be conveniently controlled.
In this embodiment, the end of the power input shaft 2 facing away from the intermediate shaft is in driving connection with the power device via a clutch device 18. In this way, the transmission connection and disconnection of the cultivator gearbox structure and external power can be facilitated.
In summary, in the invention, the power input shaft, the power output shaft and the intermediate shaft are adopted to realize the output of the first gear, the second gear, the reverse gear and the neutral gear from the power output shaft by adopting three shafts and seven gears (one of which is a double gear). The power input shaft drives the intermediate shaft by adopting a duplex gear sleeved on the power output shaft, and then the intermediate shaft is driven by the duplex gear sleeved on the power output shaft, so that the purpose of reducing one shaft is achieved; the second gear is obtained by transmission between the power input shaft and the power output shaft, and the second gear is output from the power output shaft by adopting the transmission connection of double teeth with a driving claw disc and a variable speed gear with a driven claw disc, so that the aim of reducing one gear is fulfilled; the first gear and the reverse gear are that the power of the power input shaft is firstly transmitted to the intermediate shaft, and then the first gear and the reverse gear are output between the intermediate shaft and the power output shaft; compared with a transmission structure with a common structure, which can realize first gear, second gear, reverse gear and neutral gear, one gear and one shaft are saved; and has the advantages of simple and compact structure and reasonable transmission.
Claims (6)
1. The utility model provides a cultivator gearbox structure, including box (1), power input shaft (2) and the parallel and transmission connection's of power input shaft (2) of rotatable installation on box (1) power output shaft (3), but be provided with speed change gear (4) on power output shaft (3) axial slip by means of key cooperation, corresponding speed change gear (4) are provided with shift fork (5) on box (1), shift fork (5) and gear shift instruction input mechanism link to each other and can stir speed change gear (4) to shift to different gear along axial on power output shaft (3), at least have more than two gear be effective output gear, can mesh with the gear input gear of each effective output gear when gear (4) are axially shifted to different effective output gear, each gear input gear is used for being connected to outside action execution component through the gear drive mechanism transmission of different transmission ratios; the power input device is characterized by further comprising an intermediate shaft (6) which is rotatably arranged on the box body (1) and is parallel to or coaxial with the power input shaft (2), wherein an intermediate shaft transmission gear train is arranged between the power input shaft (2) and the intermediate shaft (6) and used for driving the intermediate shaft (6) to rotate in the same direction; a second-gear transmission gear train is arranged between the power input shaft (2) and the power output shaft (3) and is used for driving the power output shaft (3) to rotate forward at a second-gear rotating speed; a first-gear transmission gear train is arranged between the intermediate shaft (6) and the power output shaft (3) and is used for driving the power output shaft (3) to rotate positively at a first-gear rotating speed; a reverse transmission gear train is further arranged between the intermediate shaft (6) and the power output shaft (3) and used for driving the power output shaft (3) to rotate reversely; at least a partial idle section is arranged on the intermediate shaft (6) and can be opposite to the speed change gear (4) to form a neutral gear;
the first-gear transmission gear train comprises a first-gear driving gear (10) fixedly sleeved on the intermediate shaft (6), and the shifting fork (5) can shift the speed change gear (4) to move along the axial direction of the power output shaft (3) so that the speed change gear (4) and the first-gear driving gear are meshed for transmission;
the reverse gear transmission gear train comprises a reverse gear driving gear (11) fixedly sleeved on the intermediate shaft (6), the reverse gear driving gear (11) is in meshed transmission with a reverse gear reversing gear (12) rotatably arranged on the box body (1), and the shifting fork (5) can shift the speed change gear (4) along the axial direction of the power output shaft (3) so that the speed change gear (4) is in meshed transmission with the reverse gear reversing gear (12);
the first-gear driving gear (10) and the reverse-gear driving gear (11) are arranged at intervals, a part between the first-gear driving gear (10) and the reverse-gear driving gear (11) on the intermediate shaft (6) is an empty section, and the shifting fork (5) can shift the speed change gear (4) along the axial direction of the power output shaft (3) so that the speed change gear (4) and the empty section on the intermediate shaft (6) are opposite to form a neutral gear;
the intermediate shaft (6) is arranged coaxially with the power input shaft (2).
2. A cultivator gearbox arrangement according to claim 1 characterised in that the intermediate shaft drive gear train comprises a power input gear (7) fixedly sleeved on the power input shaft (2) and a double gear (8) hollow sleeved on the power output shaft (3), the double gear (8) having two external teeth arranged in parallel respectively in meshing drive with the power input gear (7) and with an intermediate shaft driven gear (9) drivingly connected to the intermediate shaft (6).
3. A cultivator gearbox arrangement according to claim 2 characterised in that the second speed drive gear train comprises the double gear (8) and in that one end of the double gear (8) has a driving claw disc and in that the end of the speed change gear (4) opposite the driving claw disc has a driven claw disc, and in that the fork (5) is adapted to move the speed change gear (4) in the axial direction of the power take-off shaft (3) such that the driving claw disc and the driven claw disc are in meshed engagement.
4. A transmission structure of a cultivator according to claim 1, characterized in that a connecting hole is provided at an end of the power input shaft (2) which is provided opposite to the intermediate shaft (6), and an axis of the connecting hole is provided in coincidence with an axis of the power input shaft (2); one end, opposite to the connecting hole, of the intermediate shaft (6) is rotatably inserted and matched in the connecting hole, and a bearing (13) is arranged between the connecting hole and the intermediate shaft (6).
5. A cultivator gear box structure as claimed in claim 1 wherein one end of the intermediate shaft (6) facing away from the power input shaft (2) is drivingly connected with a coupling (14), an annular groove is formed in the circumferential surface of the coupling (14), a deflector rod (15) is provided along the depth direction of the groove, one end of the deflector rod (15) extends into the groove, and the other end of the deflector rod (15) is connected with a deflector rod control mechanism for driving the deflector rod (15) to move axially along the intermediate shaft (6).
6. A tiller transmission structure according to claim 5, characterized in that the lever control mechanism includes a lever (16), the lever (16) is disposed parallel to the intermediate shaft (6) and slidably mounted on the case (1) in the axial direction thereof, one end of the lever (16) is connected to the lever (15), the lever (16) is fixedly connected to a lever (17), and the lever (17) is connected to the power output control mechanism and is capable of driving the coupling (14) to be in both of the engaged and disengaged operation states.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711190816.5A CN107816535B (en) | 2017-11-24 | 2017-11-24 | Gear box structure of cultivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711190816.5A CN107816535B (en) | 2017-11-24 | 2017-11-24 | Gear box structure of cultivator |
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| Publication Number | Publication Date |
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| CN107816535A CN107816535A (en) | 2018-03-20 |
| CN107816535B true CN107816535B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711190816.5A Active CN107816535B (en) | 2017-11-24 | 2017-11-24 | Gear box structure of cultivator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008008449A (en) * | 2006-06-30 | 2008-01-17 | Iseki & Co Ltd | Transmission of working vehicle |
| CN202251741U (en) * | 2011-08-09 | 2012-05-30 | 桂林电子科技大学 | Gearbox of agricultural vehicle |
| CN103939538A (en) * | 2014-04-28 | 2014-07-23 | 常州联发凯迪机械有限公司 | Tractor gearbox |
| CN106884950A (en) * | 2017-03-23 | 2017-06-23 | 山东卫禾传动科技有限公司 | A kind of agricultural equipment 4 wheel driven gearbox |
| CN107023647A (en) * | 2017-05-05 | 2017-08-08 | 杨书琼 | A kind of manual transmission |
| CN207437739U (en) * | 2017-11-24 | 2018-06-01 | 威马农机股份有限公司 | A kind of gearbox designs |
-
2017
- 2017-11-24 CN CN201711190816.5A patent/CN107816535B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008008449A (en) * | 2006-06-30 | 2008-01-17 | Iseki & Co Ltd | Transmission of working vehicle |
| CN202251741U (en) * | 2011-08-09 | 2012-05-30 | 桂林电子科技大学 | Gearbox of agricultural vehicle |
| CN103939538A (en) * | 2014-04-28 | 2014-07-23 | 常州联发凯迪机械有限公司 | Tractor gearbox |
| CN106884950A (en) * | 2017-03-23 | 2017-06-23 | 山东卫禾传动科技有限公司 | A kind of agricultural equipment 4 wheel driven gearbox |
| CN107023647A (en) * | 2017-05-05 | 2017-08-08 | 杨书琼 | A kind of manual transmission |
| CN207437739U (en) * | 2017-11-24 | 2018-06-01 | 威马农机股份有限公司 | A kind of gearbox designs |
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| Publication number | Publication date |
|---|---|
| CN107816535A (en) | 2018-03-20 |
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