CN219221207U

CN219221207U - Multipurpose cultivator transmission assembly

Info

Publication number: CN219221207U
Application number: CN202320713318.9U
Authority: CN
Inventors: 任秋林; 吴美莲
Original assignee: Chongqing Hejia Machinery Part Manufacturing Co ltd
Current assignee: Chongqing Hejia Machinery Part Manufacturing Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-06-20
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses a multipurpose cultivator transmission assembly, which comprises a gearbox body, wherein a main shaft, a counter shaft and two shafts are arranged in the gearbox body in parallel, a main shaft fixing gear and a reverse gear duplex gear are arranged on the main shaft, a reverse gear and a plurality of gear gears are arranged on the two shafts, a transmission bevel gear is arranged at one end of the counter shaft, a sliding gear group in sliding fit with the counter shaft is arranged on the counter shaft, and the sliding gear group is provided with a gear shifting gear in one-to-one correspondence with the plurality of gear gears; the gear box body is internally provided with a gear shifting fork assembly which is arranged corresponding to the sliding gear group, and the gear shifting fork assembly can control the sliding gear group to axially slide along the auxiliary shaft so that different gear shifting gears on the gear box body are meshed with corresponding gear gears. Can realize the regulation of multiple gear, satisfy a quick-witted multi-purpose demand, adapt to various complicated arable land environment, overall structure is simpler compact relatively, and the transmission is succinct reliable more, and has better low rotational speed big moment of torsion transmission ability relative to other equal tooth footpath transmission.

Description

Multipurpose cultivator transmission assembly

Technical Field

The utility model belongs to the field of agricultural machinery, and particularly relates to a multipurpose transmission assembly of an agricultural machinery.

Background

Farming is an indispensable link in the agricultural production process, and along with the development of productivity, mechanized operations are increasingly widely used in agricultural production. In vast hilly areas, the cultivation method is not suitable for production operation by adopting large-sized farming machines due to the limitation of geographical conditions, and requires small-sized farming machines for cultivation. The small-sized farming machine is used as modern agricultural production auxiliary equipment, can help people to ditche soil in agricultural product planting areas, for example, deep ditches are dug around fruit trees in an orchard, so that organic fertilizer can be conveniently paved in the ditches.

Along with the acceleration of the mechanized progress, the agricultural cultivator is widely applied to the whole agricultural planting process, and in order to adapt to vast hilly areas in southwest, the requirements for miniaturization and functional diversification of the agricultural cultivator are higher and higher, and in order to meet the requirements for various working conditions in the agricultural cultivation process, the agricultural cultivator is required to have various gear switching functions, and various functional transmission case structures are also arranged in the prior art, such as an early patent number of the applicant is CN202120946781.9, and the name of the transmission case is a multi-gear adjusting gearbox for the agricultural cultivator, and the transmission case has the multi-gear adjusting function and is compact in structure, but the applicant finds that the structure is not wide in the whole applicability, the economic cost of a finished product is higher, and the processing technology is complex.

Of course, some cultivator transmission structures with more gears are also appeared on the market, such as the patent with the application number of 202120438124.3 and the name of five-gear mini-tiller two-shaft connection structure, and the patent meets the requirement of multi-gear adjustment, but the whole speed reduction capability of the transmission system is weakened due to the mode that the auxiliary shaft is directly meshed with the gear on the main shaft to realize gear shifting, so that the large torque output is not facilitated, and the applicability of the transmission system is still poor.

Disclosure of Invention

Therefore, the utility model aims to provide a multipurpose cultivator transmission assembly, which solves the problems of complex structure, large occupied space or insufficient speed reduction of the same transmission structure, insufficient output torque, poor applicability, high finished product and the like of the multi-gear transmission assembly in the prior art.

The utility model is realized by the following technical scheme:

the utility model provides a multipurpose cultivator transmission assembly, includes the gearbox body, its key lies in: the transmission comprises a transmission body, a main shaft, a countershaft and two shafts, wherein the main shaft, the countershaft and the two shafts are arranged in parallel in a rotatable mode, the main shaft is provided with main shaft fixing teeth and reverse gear duplex teeth, the two shafts are provided with reverse gear gears and a plurality of gear gears, one end of the countershaft is provided with a transmission bevel gear, the countershaft is provided with a sliding tooth group which is in sliding fit with the transmission bevel gear, and the sliding tooth group is provided with gear shifting gears which are in one-to-one correspondence with the plurality of gear gears;

the gearbox body is internally provided with a shifting fork assembly which is arranged corresponding to the sliding gear group, and the shifting fork assembly can control the sliding gear group to axially slide along the auxiliary shaft so that different shifting gears on the shifting fork assembly are meshed with corresponding gear gears.

By adopting the scheme, the multi-gear adjustment is realized by utilizing the triaxial structure, the multipurpose requirement of one machine is met, the multifunctional multi-gear transmission device is suitable for various complex farmland environments, the applicability is good, the overall structure is relatively simpler and more compact, the transmission is simpler, the processing is simple, the finished product is lower, meanwhile, the gear adjustment is finished by utilizing the gear on the diaxon to be correspondingly meshed with the gear shifting gear on the auxiliary shaft, so that the power transmitted from the main shaft is actually reduced through the diaxon, and the transmission structure has better reduction capacity under the condition of the gears with the same size, thereby providing larger torque.

As preferable: the gear comprises a three-gear, a two-gear and a first-gear which are sequentially arranged along the axial direction of a two-shaft, the main shaft fixing teeth and the main shaft are integrally formed, the reverse gear and the two-shaft are integrally formed, and the reverse gear are kept in a meshed state;

the sliding tooth group comprises a gear shifting pinion, a gear shifting middle gear and a gear shifting large gear which are arranged corresponding to the third gear, the second gear and the first gear. The main shaft fixed teeth and the reverse gear are integrated, so that the disassembly and assembly efficiency is improved.

As preferable: the gear shifting pinion, the gear shifting middle gear and the gear shifting gear are welded and fixed into a whole, and the three-gear and the two-gear are in duplex tooth shapes. By adopting the scheme, the disassembly and assembly convenience is further improved, meanwhile, compared with a traditional side tooth meshing linkage mode, the welding mode is relatively more compact than the integral duplex tooth modeling structure, and the process is simpler.

As preferable: one end of the main shaft is connected with a clutch assembly, and the transmission bevel gear and the clutch assembly are positioned on the same side;

the gearbox body is connected with a walking box body, a bevel gear shaft and an output shaft sleeve which are orthogonally distributed are arranged in the walking box body, and a transmission bevel gear which is in transmission bevel gear is arranged at the upper end of the bevel gear shaft.

As preferable: the gear shifting fork assembly comprises a fork shaft and a fork piece, wherein the fork shaft is arranged in parallel with the auxiliary shaft, the fork piece is sleeved on the fork shaft, a gap for the fork piece to be inserted is formed between the gear shifting pinion and the gear in gear shifting or between the gear in gear shifting and the gear shifting bull gear, and the end part of the fork piece is provided with an arc bayonet;

the one end that arc bayonet socket was kept away from to the shift fork piece has a section of thick bamboo, have the gear groove that corresponds the setting with each gear on the shift fork axle, have in the section of thick bamboo along the radial elastic locating structure that sets up of shift fork axle, a section of thick bamboo is connected with the rocking arm that shifts, the distal end of rocking arm that shifts is connected with the arm that shifts, the arm that shifts is located the gear box outside.

Compared with the prior art, the utility model has the beneficial technical effects that:

the multipurpose cultivator transmission assembly provided by the utility model can realize multi-gear adjustment, meets the multipurpose requirement of one machine, is suitable for various complex cultivation environments, has a relatively simpler and more compact overall structure, is simpler and more reliable to transmit, and simultaneously utilizes the gear on the two shafts to be correspondingly meshed with the gear shifting gear on the auxiliary shaft to complete gear adjustment, so that power transmitted from the main shaft is actually decelerated through the two shafts, and has better deceleration capacity compared with the case that the main shaft is directly meshed with the auxiliary shaft to shift gears under the condition of the same size of gears, thereby providing larger torque.

Drawings

FIG. 1 is a schematic view of the internal structure of the present utility model;

FIG. 2 is a schematic view of the external structure of the present utility model;

FIG. 3 is an isometric view of a transmission structure of the present utility model;

fig. 4 is a schematic structural view of a shift fork assembly.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The multipurpose cultivator transmission assembly shown by referring to fig. 1 to 4 mainly comprises a gearbox body 1 and a walking box body 2 fixedly connected with the gearbox body 1, wherein a main shaft 3, a secondary shaft 4 and a secondary shaft 5 which are all arranged in parallel in a rotatable mode are arranged in the gearbox body 1, a main shaft fixing gear 30 and a reverse gear duplex gear are arranged on the main shaft 3, a reverse gear 50 and a plurality of gear gears are arranged on the secondary shaft 5, one end of the secondary shaft 4 is provided with a transmission bevel gear 40, the secondary shaft 4 is provided with a sliding gear group in sliding fit with the transmission bevel gear 40, and the sliding gear group is provided with a gear shifting gear corresponding to the gear gears one by one.

The transmission case 1 is connected with a traveling case 2, the traveling case 2 is internally provided with a bevel gear shaft 20 and an output shaft sleeve 21 which are orthogonally distributed, the upper end of the bevel gear shaft 20 is provided with a transmission bevel gear 22 meshed with a transmission bevel gear 40, the lower end of the bevel gear shaft 20 is provided with a bevel gear shaft bevel gear 23, and the output shaft sleeve 21 is provided with a traveling bevel gear 24 meshed with the bevel gear shaft bevel gear 23.

The gear box body 1 is internally provided with a gear shifting fork assembly 6 which is arranged corresponding to the sliding gear group, and the gear shifting fork assembly 6 can control the sliding gear group to axially slide along the auxiliary shaft 4, so that different gear shifting gears on the gear shifting fork assembly are meshed with corresponding gear gears, and further, the power transmission and the gear adjustment are realized.

Specifically, the reverse gear duplex gear mainly comprises a reverse gear large gear 31 and a reverse gear small gear 32, the gear gears comprise a three-gear 51, a two-gear 52 and a first-gear 53 which are sequentially arranged along the axial direction of a two-shaft 5, the tooth diameters of the three gear gears are gradually reduced, a main shaft fixing tooth 30 and a main shaft 3 are integrally formed, a reverse gear 50 and the two-shaft 5 are integrally formed, and the reverse gear 50 and the reverse gear large gear 31 are kept in a meshed state;

the sliding gear group comprises a gear shifting small gear 41, a gear shifting middle gear 42 and a gear shifting large gear 43 which are arranged corresponding to the third gear 51, the second gear 52 and the first gear 53, and the tooth diameters of the three gear shifting gears are gradually increased.

In this application gear shifting pinion 41, gear shifting middle gear 42 and gear shifting gear wheel 43 welded fastening become an organic whole, during actual implementation, can also make gear shifting middle gear 42 and gear shifting gear wheel 43 integrative similar duplex tooth's molding, then will shift gear pinion 41 and weld in gear shifting middle gear 42's one side again, be favorable to improving dismouting efficiency, same reason, third gear 51 and second gear 52 also are duplex tooth molding, and the one end of main shaft 3 is connected with clutch assembly 7, and drive bevel gear 40 is located same one side with clutch assembly 7.

The shift fork assembly 6 includes a fork shaft 60 disposed parallel to the auxiliary shaft 4 and a fork piece 61 sleeved on the fork shaft 60, a gap for inserting the fork piece 61 is formed between the shift pinion 41 and the shift middle gear 42 or between the shift middle gear 42 and the shift big gear 43, and an arc bayonet 610 is formed at the end of the fork piece 61, in this embodiment, because the shift middle gear 42 and the shift big gear 43 are made into a double-tooth shape, the fork piece 61 is located between the shift middle gear 42 and the shift big gear 43, and the corresponding arc bayonet 610 is adapted to the barrel portion between the two.

The shift fork shaft 60 is fixedly arranged in the gearbox body 1, one end of the shift fork piece 61, which is far away from the arc-shaped bayonet 610, is provided with a shaft barrel 62, the shift fork shaft 60 is provided with a gear groove 600 which is arranged corresponding to each gear, the shaft barrel 62 is internally provided with an elastic positioning structure which is arranged along the radial direction of the shift fork shaft 60, the shaft barrel 62 is connected with a gear shifting rocker 63, the gear shifting rocker 63 is rotatably supported on the gearbox body 1 and is simultaneously rotatably connected with the shaft barrel 62, a certain movable allowance is arranged at the connecting part, when the gear shifting rocker 63 rotates, the shaft barrel 62 can be driven to slide along the shift fork shaft 60, the far end is connected with a gear shifting arm 64, the gear shifting arm 64 is positioned outside the gearbox body 1, the elastic positioning structure is usually composed of a gear shifting spring 620 and a steel ball 621, namely the gear is fixed, and when the gear shifting rocker 63 drags the pressure of the gear shifting spring 620, the gear shifting rocker can be separated from the gear groove 600 at present, so that the gear shifting is completed.

Referring to the multipurpose tiller transmission assembly shown in fig. 1 to 4, when the main shaft fixing tooth 30 is controlled to mesh with the three-stage gear 51 by the shift fork assembly 6, the three-stage gear 51 is also meshed with the shift pinion 41, and at this time, the auxiliary shaft can perform three-stage power transmission to the output shaft housing 21.

The main shaft fixed gear 30 is meshed with the third gear 51, the second gear 52 and the middle gear 42, and the auxiliary shaft can perform power transmission of second gear to the output shaft sleeve 21.

The main shaft fixed teeth 30 are meshed with the three-stage gear 51, the first-stage gear 53 is meshed with the gear shift gearwheel 43, and the auxiliary shaft can perform first-stage power transmission to the output shaft sleeve 21.

The main shaft fixed gear 30 is meshed with the three-gear 51, the reverse gear 50 is meshed with the reverse gear large gear 31, the reverse gear small gear 32 is meshed with the gear large gear 43, and at this time, the power transmission of the gear reverse gear of the auxiliary shaft output shaft sleeve 21 is realized, and the output shaft sleeve 21 is reversed.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements made by those skilled in the art without departing from the scope of the present utility model shall be considered as falling within the scope of the present application.

Claims

1. The utility model provides a multipurpose cultivator transmission assembly, includes gearbox body (1), its characterized in that: the transmission comprises a transmission body (1), wherein a main shaft (3), a countershaft (4) and a two shafts (5) which are all rotatably arranged in parallel with each other are arranged in the transmission body (1), a main shaft fixing tooth (30) and a reverse gear duplex tooth are arranged on the main shaft (3), a reverse gear (50) and a plurality of gear gears are arranged on the two shafts (5), one end of the countershaft (4) is provided with a transmission bevel gear (40), the countershaft (4) is provided with a sliding tooth group which is in sliding fit with the transmission bevel gear, and the sliding tooth group is provided with a gear shifting gear which is in one-to-one correspondence with the plurality of gear gears;

the gearbox body (1) is internally provided with a shifting fork assembly (6) which is arranged corresponding to the sliding gear group, and the shifting fork assembly (6) can control the sliding gear group to axially slide along the auxiliary shaft (4) so that different shifting gears on the shifting fork assembly are meshed with corresponding gear gears.

2. The multipurpose cultivator transmission assembly of claim 1, wherein: the reverse gear duplex gear comprises a reverse gear large gear (31) and a reverse gear small gear (32), the gear comprises a three-gear (51), a two-gear (52) and a first-gear (53) which are sequentially arranged along the axial direction of a two-shaft (5), the main shaft fixing gear (30) and the main shaft (3) are integrally formed, the reverse gear (50) and the two-shaft (5) are integrally formed, and the reverse gear (50) and the reverse gear large gear (31) are kept in a meshed state;

the sliding tooth group comprises a gear shifting pinion (41), a gear shifting middle gear (42) and a gear shifting large gear (43) which are arranged corresponding to the third gear (51), the second gear (52) and the first gear (53).

3. The multipurpose cultivator transmission assembly of claim 2, wherein: the gear shifting pinion (41), the gear shifting middle gear (42) and the gear shifting large gear (43) are welded and fixed into a whole, and the three-gear (51) and the two-gear (52) are in duplex tooth shapes.

4. A multipurpose tiller transmission assembly according to any one of claims 1-3, characterized in that: one end of the main shaft (3) is connected with a clutch assembly (7), and the transmission bevel gear (40) and the clutch assembly (7) are positioned on the same side;

the transmission box body (1) is connected with a walking box body (2), a bevel gear shaft (20) and an output shaft sleeve (21) which are orthogonally distributed are arranged in the walking box body (2), and a transmission bevel gear (22) meshed with the transmission bevel gear (40) is arranged at the upper end of the bevel gear shaft (20).

5. A multipurpose cultivator transmission assembly as claimed in claim 2 or claim 3, wherein: the gear shifting fork assembly (6) comprises a fork shaft (60) which is arranged in parallel with the auxiliary shaft (4) and a fork piece (61) which is sleeved on the fork shaft (60), a gap for the fork piece (61) to be inserted is formed between the gear shifting pinion (41) and the gear shifting middle gear (42) or between the gear shifting middle gear (42) and the gear shifting big gear (43), and an arc bayonet (610) is formed at the end part of the fork piece (61);

one end of the shifting fork piece (61) far away from the arc bayonet (610) is provided with a shaft barrel (62), the shifting fork shaft (60) is provided with gear grooves (600) which are correspondingly arranged with various gears, the shaft barrel (62) is internally provided with an elastic positioning structure which is radially arranged along the shifting fork shaft (60), the shaft barrel (62) is connected with a gear shifting rocker arm (63), the far end of the gear shifting rocker arm (63) is connected with a gear shifting arm (64), and the gear shifting arm (64) is positioned outside the gearbox body (1).