CN210661231U

CN210661231U - Central transmission structure

Info

Publication number: CN210661231U
Application number: CN201921218544.XU
Authority: CN
Inventors: 林佩霞
Original assignee: Shantou Hengguan Technology Co ltd
Current assignee: Guangdong Hengguan Technology Industry Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-06-02
Anticipated expiration: 2029-07-29

Abstract

The utility model discloses a central transmission structure, which comprises a motor, be equipped with the driving piece in the drive shaft of motor. The utility model discloses a motor drives motor gear and three planetary gear and rotates, thereby cooperation sun gear produces the reduction ratio of 1:5.0, and the output gear on the planetary gear seat conveys power to the gearbox linkage tooth on the medium wave case speed change gear pole, realize the synchronous rotation with the gear position sleeve, through gear engagement steering wheel pulling gear spring through the speed change pull rod, the gear position sleeve that pulls on the gear shifting piece slides to first gear shifting tooth, make it mesh with the high-speed tooth of gear shifting, simultaneously with power transmission off through the preceding rear drive shaft of medium wave case, promote the high-speed rotation effect of whole car, the high-speed drive ratio reaches 1:5.25, slide to second gear shifting tooth through the gear position sleeve, make it mesh with gear shifting low-speed tooth, power transmits off through the preceding rear drive shaft of medium wave case, promote the rotation effect of low-speed, the drive ratio reaches 1: 12.83.

Description

Central transmission structure

Technical Field

The utility model relates to a derailleur technical field especially relates to a central transmission structure.

Background

The speed variator is a mechanism for changing the rotation speed and torque from engine, it can change the transmission ratio of output shaft and input shaft by fixing or stepping, and is also called speed-changing box, and is formed from speed-changing transmission mechanism and control mechanism, some automobiles also have power output mechanism, and the transmission mechanism is mostly driven by general gear, also can be driven by planetary gear, and the general gear transmission speed-changing mechanism is generally driven by sliding gear and synchronizer, etc.

The existing central transmission structure for the engine has poor high-speed and low-speed rotating effects and low high-speed and low-speed transmission ratio, and the central transmission structure is provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings existing in the prior art, and providing a central transmission structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a central transmission structure, includes the motor, be equipped with the driving piece in the drive shaft of motor, be equipped with the driving medium on the driving piece, the driving piece is connected with the driving medium transmission, be equipped with the gear shifting variable speed spare on the driving medium, the driving medium is connected with gear shifting variable speed spare transmission.

Preferably, the driving member comprises a motor gear coaxially and fixedly connected to a motor driving shaft, a drill screw is arranged between the motor gear and the motor driving shaft in a threaded penetrating manner, a planetary fixing member and a sun gear are fixedly sleeved at the right end of the motor, the sun gear is positioned at the right side of the planetary fixing member, a planetary gear cover is arranged at the right side of the sun gear, three planetary gears are rotatably arranged on the planetary gear cover in a penetrating manner, a gear central shaft is coaxially and fixedly connected to the three planetary gears, a planetary gear seat is arranged at the right side of the planetary gear cover, an output gear is coaxially and fixedly connected to the planetary gear seat and is in transmission connection with a transmission member, a planetary outer shell cover is fixedly connected to the planetary fixing member, an engine base is fixedly connected to the right side of the planetary outer shell cover, and a first snap ring and a first gasket are arranged between, the driving medium rotates and runs through the engine bottom, the first snap ring and the first gasket.

Preferably, first ball bearings are arranged between the sun gear and the planetary gear cover, between the planetary gear base and the output gear and on the right side of the bottom of the engine, second ball bearings are arranged on the left and right sides of the planetary gears of a plurality of gear center shafts, third ball bearings are arranged between the output gear and the planetary housing cover, and fourth ball bearings are arranged on the left side of the bottom of the engine.

Preferably, the driving medium is including rotating the well ripples case gear change pole that runs through engine bottom, first snap ring and first gasket setting, coaxial fixedly connected with gearbox linkage tooth, first gear change tooth and second gear change tooth from a left side to the right side in proper order on the well ripples case gear change pole, gearbox linkage tooth and output gear meshing, the silica gel circle has been cup jointed on the gearbox linkage tooth, be equipped with the optical axis on the well ripples case gear change pole, first gear change tooth and second gear change tooth are equipped with same gear position sleeve, be equipped with same root aluminum pipe between well ripples case gear change pole and the gear position sleeve, well ripples case gear change pole right side is equipped with the engine cover.

Preferably, shift speed change spare is including setting up respectively in the gear shifting piece of two preceding rear drive shafts of medium wave case and joint on the gear position sleeve of two preceding rear drive shafts of medium wave case speed change gear pole both sides and two the gear shifting piece of medium wave case speed change gear pole all is connected with bonnet right side inner wall rotation, two coaxial fixedly connected with shift high-speed tooth and shift low-speed tooth, two in proper order from a left side to the right side on the preceding rear drive shaft of medium wave case shift high-speed tooth all with first shift tooth meshing, two shift low-speed tooth all meshes with second shift tooth, two the preceding rear drive shaft of medium wave case and bonnet right side all are equipped with the second gasket, fixed running through is equipped with shifting piece fixed axle and variable speed pull rod on the gear position sleeve, be equipped with two second snap rings on the variable speed pull rod, the variable speed pull rod cup joints and has put into gear the spring.

Preferably, fifth ball bearings are arranged between the medium wave box speed change gear rod and the medium wave box front and rear transmission shaft and the engine cover, and between the medium wave box front and rear transmission shaft and the engine bottom.

Compared with the prior art, the utility model, its beneficial effect does:

1. the motor drives the engaged motor gear and the three planetary gears to rotate, so that a reduction ratio of 1:5.0 is generated by matching with the sun gear, and the output gear on the planetary gear seat transmits power to the gearbox linkage gear on the medium-wave box speed change gear rod, thereby realizing synchronous rotation with the gear positioning sleeve.

2. The gear engaging steering engine pulls the gear engaging spring to pass through the speed change pull rod, the gear positioning sleeve on the gear shifting piece is pulled to slide to the first gear shifting tooth, the first gear shifting tooth is meshed with the gear shifting high-speed teeth on two sides, meanwhile, power is transmitted out through the front transmission shaft and the rear transmission shaft of the middle wave box, the high-speed rotation effect of the whole vehicle is improved, and the high-speed transmission ratio reaches 1: 5.25.

3. The gear positioning sleeve slides to the second gear shifting teeth to be meshed with the gear shifting low-speed teeth on two sides, power is transmitted out through the front transmission shaft and the rear transmission shaft of the medium wave box, the low-speed rotation effect of the whole vehicle is improved, and the low-speed transmission ratio reaches 1: 12.83.

Drawings

Fig. 1 is a schematic diagram illustrating a disassembled structure of a driving member of a central transmission structure according to the present invention;

fig. 2 is a schematic view of a transmission member and a shift member of a central transmission structure according to the present invention;

fig. 3 is a schematic cross-sectional view of a high-speed transmission of a central transmission structure according to the present invention;

fig. 4 is a schematic cross-sectional view of a low-speed transmission of a central transmission structure according to the present invention.

In the figure: 1 motor, 2 motor gears, 3 drill screws, 4 planetary holders, 5 sun gears, 6 planetary gear covers, 7 planetary gears, 8 gear central shafts, 9 planetary gear bases, 10 output gears, 11 planetary housing covers, 12 engine bases, 13 first snap rings, 301 first gaskets, 15 first ball bearings, 16 second ball bearings, 17 third ball bearings, 18 fourth ball bearings, 19 medium wave box variable speed gear rods, 20 gearbox linkage teeth, 21 first shifting teeth, 22 second shifting teeth, 23 silica gel rings, 24 gear positioning sleeves, 25 aluminum pipes, 26 engine covers, 27 medium wave box front and rear transmission shafts, 28 gear shifting pieces, 29 shifting high-speed teeth, 30 shifting low-speed teeth, 302 second gaskets, 32 gear shifting piece fixing shafts, 33 gear shifting pull rods, 34 second snap rings, 35 gear engaging springs, 36 fifth ball bearings and 37 optical axes.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a central transmission structure comprises a motor 1, a driving member is arranged on a driving shaft of the motor 1, the driving member comprises a motor gear 2 coaxially and fixedly connected to the driving shaft of the motor 1, the module of the motor gear 2 is 0.6, the number of teeth is 12, a drill grain screw 3 is arranged between the motor gear 2 and the driving shaft of the motor 1 in a threaded penetrating manner, a planetary fixing member 4 and a sun gear 5 are fixedly sleeved at the right end of the motor 1, the module of the sun gear is 0.6, the number of teeth is 60, the sun gear 5 is positioned at the right side of the planetary fixing member 4, a planetary gear cover 6 is arranged at the right side of the sun gear 5, three planetary gears 7 are arranged on the planetary gear cover 6 in a rotating penetrating manner, the module of the planetary gear 7 is 0.6, the number of teeth is 24, a gear central gear shaft 8 is coaxially and fixedly connected to the three planetary gears 7, the modulus of output gear 10 is 0.8, and the number of teeth is 15, and output gear 10 is connected with the driving medium transmission, fixedly connected with planet shell lid 11 on the planet mounting 4, and the right side fixedly connected with engine bottom 12 of planet shell lid 11 is equipped with first snap ring 13 and first gasket 301 between planet shell lid 11 and the engine bottom 12, and the driving medium rotates and runs through engine bottom 12, first snap ring 13 and the setting of first gasket 301.

Between sun gear 5 and the planetary gear lid 6 and between planetary gear seat 9 and the output gear 10 and engine bottom 12 right side all are equipped with first ball bearing 15, a plurality of gear center axle 8 are located the left and right sides of planetary gear 7 and all are equipped with second ball bearing 16, be equipped with third ball bearing 17 between output gear 10 and the planet shell lid 11, the left side of engine bottom 12 is equipped with fourth ball bearing 18, first ball bearing 15, second ball bearing 16, third ball bearing 17 and fourth ball bearing 18 are prior art, do not do this and describe repeatedly.

The driving part is provided with a driving part which is in transmission connection with the driving part, the driving part comprises a medium wave box variable-speed gear rod 19 which is rotatably arranged through an engine base 12, a first snap ring 13 and a first gasket 301, a transmission box linkage tooth 20, a first shifting tooth 21 and a second shifting tooth 22 are coaxially and fixedly connected on the medium wave box variable-speed gear rod 19 from left to right in sequence, the modulus of the transmission box linkage tooth 20 is 0.8, the number of teeth is 24, the modulus of the first shifting tooth 21 is 0.8, the number of teeth is 24, the modulus of the second shifting tooth 22 is 0.8, the number of teeth is 15, the transmission box linkage tooth 20 is meshed with the output gear 10, a silica gel ring 23 is sleeved on the transmission box linkage tooth 20, an optical axis 37 is arranged on the medium wave box variable-speed gear rod 19, the first shifting tooth 21 and the second shifting tooth 22 are provided with a same gear positioning sleeve 24, a same aluminum pipe 25 is arranged between the medium wave box variable-speed gear rod 19 and the gear positioning sleeve 24, an engine cover 26 is arranged on the right side of the medium wave box speed change gear rod 19.

The transmission part is provided with a gear shifting and speed changing part, the transmission part is in transmission connection with the gear shifting and speed changing part, the gear shifting and speed changing part comprises two middle wave box front and rear transmission shafts 27 respectively arranged at two sides of a middle wave box speed changing gear rod 19 and a gear shifting part 28 clamped on a gear positioning sleeve 24, the two middle wave box speed changing gear rods 19 are both in rotating connection with the inner wall at the right side of an engine cover 26, a gear shifting high-speed tooth 29 and a gear shifting low-speed tooth 30 are coaxially and fixedly connected on the two middle wave box front and rear transmission shafts 27 from left to right in sequence, the modulus of the gear shifting high-speed tooth 29 is 0.8, the tooth number is 15, the modulus of the gear shifting low-speed tooth 30 is 0.8, the tooth number is 24, the two gear shifting high-speed teeth 29 are both meshed with a first gear shifting tooth 21, the two gear shifting low-speed teeth 30 are both meshed with a second gear shifting tooth 22, second gaskets 302 are respectively arranged on the two middle wave box front and rear transmission shafts 27 and on the right side of the, two second snap rings 34 are arranged on the speed change pull rod 33, a gear engaging spring 35 is sleeved on the speed change pull rod 33, and fifth ball bearings 36 are arranged between the medium wave box speed change gear rod 19 and the medium wave box front and rear transmission shaft 27 and the engine cover 26, and between the medium wave box front and rear transmission shaft 27 and the engine base 12.

In the utility model, after the motor 1 is electrified, the motor is transmitted to the planetary gear 7 through the motor gear 2, the reduction ratio is 1:5.0 is generated through the sun gear 5, and the motor is transmitted to the gearbox linkage teeth 20 on the medium wave box speed change gear rod 19 through the output gear 10 on the planetary gear seat 9, so that the motor and the gear positioning sleeve 24 synchronously rotate; then, a gear engaging spring 35 is pulled by a gear engaging steering engine to pull a gear positioning sleeve 24 on a gear shifting piece 28 to slide to a first gear shifting tooth 21 through a speed changing pull rod 33, so that the first gear shifting tooth 21 is meshed with gear shifting high-speed teeth 29 on two sides, power is transmitted out through a front transmission shaft 27 and a rear transmission shaft 27 of a medium wave box, the high-speed rotation effect of the whole vehicle is effectively improved, and the high-speed transmission ratio is 1: 5.25;

when the gear positioning sleeve 24 slides to the second shift tooth 22, the second shift tooth 22 is meshed with the shift low-speed teeth 30 on the two sides, and meanwhile, power is transmitted out through the front and rear transmission shafts 27 of the middle wave box, so that the low-speed rotation effect of the whole vehicle is effectively improved, and the low-speed transmission ratio reaches 1: 12.83.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a central transmission structure, includes motor (1), its characterized in that, be equipped with the driving piece in the drive shaft of motor (1), be equipped with the driving medium on the driving piece, the driving piece is connected with the driving medium transmission, be equipped with the gear shifting variable-speed part on the driving medium, the driving piece is connected with the gear shifting variable-speed part transmission, the driving piece includes motor gear (2) of coaxial fixed connection in motor (1) drive shaft, the screw thread runs through between motor gear (2) and motor (1) drive shaft and is equipped with brill grain screw (3), motor (1) right-hand member fixed cover has been connected with planet mounting (4) and sun gear (5), sun gear (5) are located planet mounting (4) right side, sun gear (5) right side is equipped with planetary gear lid (6), it runs through three planetary gear (7) to rotate on planetary gear lid (6), the planetary gear set is characterized in that a gear center shaft (8) is coaxially and fixedly connected to the planetary gear (7), a planetary gear base (9) is arranged on the right side of the planetary gear cover (6), an output gear (10) is coaxially and fixedly connected to the planetary gear base (9), the output gear (10) is in transmission connection with a transmission piece, a planetary outer shell cover (11) is fixedly connected to the planetary fixing piece (4), an engine base (12) is fixedly connected to the right side of the planetary outer shell cover (11), a first snap ring (13) and a first gasket (301) are arranged between the planetary outer shell cover (11) and the engine base (12), the transmission piece is arranged to rotate to penetrate through the engine base (12), the first snap ring (13) and the first gasket (301), first ball bearings (15) are arranged between the sun gear (5) and the planetary gear cover (6) and between the planetary gear base (9) and the output gear (10), a plurality of gear center shafts (8) are positioned on the left side and the right side of the planetary gear (7) and on the right side of the engine base (12) and are respectively provided with a second ball bearing (16), a third ball bearing (17) is arranged between the output gear (10) and the planetary outer shell cover (11), the left side of the engine base (12) is provided with a fourth ball bearing (18), the transmission piece comprises a medium wave box variable speed gear rod (19) which is rotatably arranged through the engine base (12), a first snap ring (13) and a first gasket (301), the medium wave box variable speed gear rod (19) is sequentially and fixedly connected with a gearbox linkage tooth (20), a first variable speed tooth (21) and a second variable speed tooth (22) from left to right, the gearbox linkage tooth (20) is meshed with the output gear (10), a silica gel ring (23) is sleeved on the gearbox linkage tooth (20), and an optical axis (37) is arranged on the medium wave box variable speed gear rod (19), the first gear shifting tooth (21) and the second gear shifting tooth (22) are provided with the same gear positioning sleeve (24), the same aluminum pipe (25) is arranged between the medium wave box gear shifting rod (19) and the gear positioning sleeve (24), the engine cover (26) is arranged on the right side of the medium wave box gear shifting rod (19), the gear shifting part comprises two medium wave box front and rear transmission shafts (27) respectively arranged on two sides of the medium wave box gear shifting rod (19) and a gear shifting part (28) clamped on the gear positioning sleeve (24), the two medium wave box gear shifting rods (19) are rotatably connected with the inner wall on the right side of the engine cover (26), the two medium wave box front and rear transmission shafts (27) are sequentially and coaxially and fixedly connected with a gear shifting high-speed tooth (29) and a gear shifting low-speed tooth (30) from left to right, the gear shifting high-speed tooth (29) is meshed with the first gear shifting tooth (21), two shift low-speed tooth (30) all mesh with second shift tooth (22), two on well ripples case front and back transmission shaft (27) and bonnet (26) right side all be equipped with second gasket (302), gear position sleeve (24) are gone up fixed running through and are equipped with the gear and dial a fixed axle (32) and change speed pull rod (33), be equipped with two second snap rings (34) on change speed pull rod (33), change speed pull rod (33) have cup jointed gear engaging spring (35), well ripples case variable speed gear pole (19) and well ripples case front and back transmission shaft (27) and bonnet (26) between to and all be equipped with fifth ball bearing (36) between well ripples case front and back transmission shaft (27) and the engine bottom (12).