CN211288625U

CN211288625U - Gear transmission structure of mini-tiller

Info

Publication number: CN211288625U
Application number: CN201922347415.7U
Authority: CN
Inventors: 刘滨; 王显钢; 唐可文; 杨毓贤; 张洪远
Original assignee: Chongqing Shineray Agricultural Machinery Co Ltd
Current assignee: Chongqing Shineray Agricultural Machinery Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-18
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to a gear transmission structure of a mini-tiller, which comprises a main shaft, a transition shaft and an auxiliary shaft; the spindle duplex teeth comprise a first driving tooth and a second driving tooth; the auxiliary shaft is connected with a reverse gear duplex gear and a driving gear, the reverse gear duplex gear is movably connected with the auxiliary shaft, and the driving gear is connected with the auxiliary shaft in a spline mode; the reverse gear duplex teeth comprise a first reverse gear tooth and a second reverse gear tooth; the auxiliary shaft is connected with a slow gear and a fast gear in a spline mode; the second reverse gear tooth is meshed with the slow gear tooth; the auxiliary shaft is also integrally formed with transmission teeth; the transmission gear is meshed with the driving gear on the auxiliary shaft. Its advantages are: the utility model discloses a plough quick-witted gear drive structure a little, can reduce whole gear drive's number of teeth and modulus, whole transmission structure's is small, and then reduces whole transmission structure's weight and the cost that reduces the complete machine and make.

Description

Gear transmission structure of mini-tiller

Technical Field

The utility model belongs to the technical field of gear drive technique and specifically relates to a plough quick-witted gear drive structure a little.

Background

The mini-tiller is powered by a small diesel engine or a gasoline engine, has the characteristics of light weight, small volume, simple structure and the like, is widely suitable for dry land, paddy field, orchard and other places such as plains, mountainous areas and hills, can perform operations such as water pumping, power generation, pesticide spraying, spraying and the like by being matched with corresponding machines, can also be used for short-distance transportation by being towed by a trailer, can freely run in the field, is convenient for users to use and store, saves the trouble that large agricultural machinery cannot enter mountainous area fields, and is the best choice for farmers to replace cattle ploughing.

However, the transmission structure of the mini-tiller in the prior art has the following defects and shortcomings:

the transmission structure of the mini-tiller in the prior art is usually in a three-stage transmission structure form, so that the number of teeth and the modulus of the whole gear transmission are caused, and the volume of the whole transmission structure is large.

Chinese patent document CN201721312982.3, application date 20171012, with patent names: a gear transmission mechanism and a mini-tiller are disclosed, and the gear transmission mechanism comprises a first bevel gear, a second bevel gear and a third bevel gear; the second bevel gear and the third bevel gear are symmetrically arranged, and the rotating plane of the second bevel gear is not parallel to the rotating plane of the third bevel gear; the first bevel gear is meshed with one of the second bevel gear and the third bevel gear.

The gear transmission mechanism disclosed by the patent document realizes input of one bevel gear and output of two bevel gears, has no missing of tillage during rotary tillage, is convenient to operate and is not easy to block. However, a technical solution that can reduce the number of teeth and the module of the whole gear transmission is not disclosed, and the volume of the whole transmission structure is small.

In summary, there is a need for a mini-tiller gear transmission structure with a small size, which can reduce the number of teeth and the module of the whole gear transmission, and no report on the mini-tiller gear transmission structure is found at present.

Disclosure of Invention

The utility model aims at providing a can reduce whole gear drive's number of teeth and modulus, plough quick-witted gear drive structure a little of whole transmission structure's small.

In order to achieve the purpose, the utility model adopts the technical proposal that:

a gear transmission structure of a mini-tiller comprises a main shaft, a transition shaft and an auxiliary shaft; the main shaft rotates to drive the transition shaft to rotate; the transition shaft rotates to drive the auxiliary shaft to rotate; the main shaft is connected with main shaft duplex teeth in a spline form; the spindle duplex teeth comprise a first driving tooth and a second driving tooth; the auxiliary shaft is connected with a reverse gear duplex gear and a driving gear, the reverse gear duplex gear is movably connected with the auxiliary shaft, and the driving gear is connected with the auxiliary shaft in a spline mode; the reverse gear duplex teeth comprise a first reverse gear tooth and a second reverse gear tooth; the auxiliary shaft is connected with a slow gear and a fast gear in a spline mode; the second reverse gear tooth is meshed with the slow gear tooth; the auxiliary shaft is also integrally formed with transmission teeth; the transmission gear is meshed with the driving gear; when the main shaft is in a neutral gear state, a first driving tooth of the main shaft duplex teeth is meshed with a first reverse gear tooth of the reverse gear duplex teeth and synchronously rotates; when the main shaft double-coupling gear is in a slow gear state, the main shaft double-coupling gear moves axially, and a first driving gear on the driving double-coupling gear is meshed with a slow gear on the auxiliary shaft and rotates synchronously; when the transmission is in a fast gear state, the main shaft duplex teeth move axially, and the second driving teeth on the driving duplex teeth are meshed with the fast gear teeth on the auxiliary shaft and rotate synchronously.

As a preferred technical scheme, one end of the auxiliary shaft is provided with a driving umbrella-shaped tooth; the driving bevel gear is engaged with the driven bevel gear; the driven bevel gear is fixedly provided with a driven bevel gear shaft; the other end of the driven bevel gear shaft is engaged with a walking bevel gear; and a walking bevel gear shaft is arranged in the walking bevel gear.

As a preferable technical scheme, two ends of the main shaft, the transition shaft, the auxiliary shaft and the driven bevel gear shaft are respectively provided with a supporting bearing.

As a preferred technical scheme, the gear transmission structure of the mini-tiller is characterized in that the number of teeth Z of a first driving tooth of the main shaft duplex teeth is 16, and the modulus m is 1.75; the number of teeth Z of the second driving tooth is 20 and the modulus m is 1.75.

As a preferable technical solution, the number Z of the first reverse gear teeth of the reverse double gear is 33, and the module m is 1.75; the number of teeth Z of the second reverse gear tooth is 19, and the module m is 1.75.

As a preferable technical scheme, the number Z of the driving teeth is 32, and the modulus m is 1.75; the number of teeth Z of the transmission gear is 12, and the modulus m is 1.75.

As a preferable technical solution, the number Z of the slow gear teeth is 25, and the modulus m is 1.75; the number of the fast gear teeth Z is 21, and the modulus m is 1.75.

As a preferred technical scheme, the main shaft is provided with an axial limiting ring on the inner wall of a first driving tooth of the main shaft duplex tooth.

As a preferable technical scheme, one end of the reverse gear duplex teeth, which is far away from the driving teeth, is provided with a countershaft bushing; and extension sleeves are arranged at two ends of the driving teeth.

The utility model has the advantages that:

1. the utility model discloses a plough quick-witted gear drive structure a little, can reduce whole gear drive's number of teeth and modulus, whole transmission structure's is small, and then reduces whole transmission structure's weight and the cost that reduces the complete machine and make.

2. The gear transmission structure comprises a main shaft, a transition shaft and an auxiliary shaft; the main shaft rotates to drive the transition shaft to rotate; the transition shaft rotates to drive the auxiliary shaft to rotate. The design is beneficial to improving the transmission performance by introducing the transition shaft to carry out transmission motion. The gear transmission structure comprises a main shaft, a transition shaft and an auxiliary shaft; the main shaft rotates to drive the transition shaft to rotate; the transition shaft rotates to drive the auxiliary shaft to rotate. The design is beneficial to improving the transmission performance by introducing the transition shaft to carry out transmission motion.

3. No matter under neutral gear, fast gear, the slow-speed gear state, all be provided with corresponding power transmission structure, and the number of teeth and the modulus of power transmission have all reduced to the volume of transmission structure of reversing gear has been reduced.

Drawings

Fig. 1 is a schematic structural view of a first side of the gear transmission structure of the present invention.

Fig. 2 is a schematic structural view of a second side surface of the gear transmission structure of the present invention.

Fig. 3 is a schematic plan view of the gear transmission structure of the present invention.

Detailed Description

The invention will be further described with reference to the following examples and with reference to the accompanying drawings.

The reference numerals and components referred to in the drawings are as follows:

1. main shaft 11, main shaft double gear

111. First driving tooth 112, second driving tooth

12. Spacing ring 2 auxiliary shaft

21. Reverse gear double tooth 211, first reverse gear tooth

212. Second reverse gear tooth 22. drive tooth

23. Auxiliary bushing

3. Transition shaft 31 slow gear tooth

32. Fast gear 33. transmission gear

4. Support bearing 5. active umbrella-shaped tooth

6. Driven bevel gear shaft 7

9. Travelling bevel gear 10. travelling bevel gear shaft

Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of a first side structure of a gear transmission structure of the present invention. Fig. 2 is a schematic structural view of a second side surface of the gear transmission structure of the present invention. A gear transmission structure of a micro-cultivator; the gear transmission structure comprises a main shaft 1, a transition shaft 3 and a secondary shaft 2; the main shaft 1 rotates to drive the transition shaft 3 to rotate; the transition shaft 3 rotates to drive the auxiliary shaft 2 to rotate; the main shaft 1 is connected with a main shaft 1 double coupling shaft in a spline form; the spindle dual gear 11 comprises a first driving gear 111 and a second driving gear 112; the auxiliary shaft 2 is movably connected with a reverse gear duplex gear 21 and a driving gear 22; one end of the reverse gear duplex gear 21 is movably connected to the auxiliary shaft 2; the reverse double tooth 21 comprises a first reverse tooth 211 and a second reverse tooth 212; the auxiliary shaft 2 is connected with a slow gear 31 and a fast gear 32 in a spline mode; the second reverse gear tooth 212 is meshed with the slow gear tooth 31; the auxiliary shaft 2 is also integrally formed with a transmission gear 33; the transmission gear 33 is meshed with the driving gear 22; when in a neutral state, the first driving tooth 111 of the main shaft duplex tooth 11 is meshed with the first reverse gear tooth 211 of the reverse gear duplex tooth 21 and synchronously rotates; when in a slow gear state, the main shaft duplex teeth 11 move axially, and the first driving teeth 111 on the driving duplex teeth are meshed with the slow gear teeth 31 on the auxiliary shaft 2 and rotate synchronously; when in the fast gear state, the main shaft duplex teeth 11 move axially, and the second driving teeth 112 on the driving duplex teeth are meshed with the fast gear teeth 32 on the auxiliary shaft 2 and rotate synchronously.

The two ends of the main shaft 1, the transition shaft 3, the auxiliary shaft 2 and the driven bevel gear shaft 7 are respectively provided with a support bearing 4; a countershaft lining 23 is arranged at one end of the reverse gear duplex gear 21 far away from the driving gear 22; the two ends of the driving gear 22 are provided with extending sleeves.

Please refer to fig. 3, fig. 3 is a schematic plan view of the gear transmission structure of the present invention. One end of the auxiliary shaft 2 is provided with a driving umbrella-shaped tooth 5; the driving bevel gear 5 is engaged with a driven bevel gear 6; the driven bevel gear 6 is fixedly arranged on a driven bevel gear shaft 7; the other end of the driven bevel gear shaft 7 is engaged with a walking bevel gear 9; a walking bevel gear shaft 10 is arranged in the walking bevel gear 9; the number Z of the first driving teeth 111 of the main shaft duplex teeth 11 is 16, and the modulus m is 1.75; the number Z of the second driving teeth 112 is 20, and the modulus m is 1.75; the tooth number Z of the first reverse gear 211 of the reverse double gear 21 is 33, and the modulus m is 1.75; the number Z of the second reverse gear teeth 212 is 19, and the modulus m is 1.75; the number Z of the driving teeth 22 is 32, and the modulus m is 1.75; the number Z of the transmission teeth 33 is 12, and the modulus m is 1.75; the number Z of the slow gear teeth 31 is 25, and the modulus m is 1.75; the number Z of the snap tooth 32 is 21, and the modulus m is 1.75.

The embodiment needs to be explained as follows:

the gear transmission structure comprises a main shaft 1, a transition shaft 3 and a secondary shaft 2; the main shaft 1 rotates to drive the transition shaft 3 to rotate; the transition shaft 3 rotates to drive the auxiliary shaft 2 to rotate. The design is beneficial to improving the transmission performance by introducing the transition shaft 3 to carry out transmission motion.

The countershaft 2 on be connected with reverse gear duplicate teeth 21, and reverse gear duplicate teeth 21 and countershaft 2 be swing joint, the effect of this design is: the reverse double toothing 21 is articulated so that the reverse double disc can rotate freely without this rotation causing the secondary shaft 2 to rotate.

The auxiliary shaft 2 is connected with a slow gear 31 and a fast gear 32 in a spline mode. Therefore, both the slow gear 31 and the fast gear 32 can synchronously rotate with the transition shaft 3, and power transmission is conveniently carried out in a fast gear state and a slow gear state.

The auxiliary shaft 2 is also integrally formed with a transmission gear 33; the driving teeth 33 are engaged with the driving teeth 22. This design enables power to be transmitted from the counter shaft 2 to the main shaft 1 in any state, i.e., neutral, fast, and slow.

When in a neutral gear state, the first driving tooth 111 of the main shaft duplex tooth 11 is meshed with the first reverse gear tooth 211 of the reverse gear duplex tooth 21 and synchronously rotates, so that the power of the main shaft 1 is transmitted to the reverse gear duplex tooth 21, and the reverse gear duplex tooth 21 is movably connected with the auxiliary shaft 2, so that the auxiliary shaft 2 does not rotate when the reverse gear duplex tooth 21 rotates, and the second reverse gear tooth 212 of the reverse gear duplex tooth 21 is meshed with the slow gear tooth 31 of the transition shaft 3, so that the power is transmitted to the auxiliary shaft 2, and the power transmission in the neutral gear state is realized.

When in the slow gear state, the main shaft duplex teeth 11 move axially, and the first driving teeth 111 on the driving duplex teeth are meshed with the slow gear teeth 31 on the auxiliary shaft 2 and rotate synchronously. The axial movement of the main shaft duplex teeth 11 can be realized by operating a gear shifting block mechanism, and as the slow gear teeth 31 are connected with the auxiliary shaft 2 in a spline mode, the slow gear teeth 31 drive the transition shaft 3 to synchronously rotate, and the transmission gear on the transition shaft 3 is meshed with the driving gear 22 on the auxiliary shaft 2, so that power is transmitted to the auxiliary shaft 2, and the power transmission in a slow gear state is realized.

When in the fast gear state, the main shaft duplex teeth 11 move axially, and the second driving teeth 112 on the driving duplex teeth are meshed with the fast gear teeth 32 on the auxiliary shaft 2 and rotate synchronously. The axial movement of the main shaft duplex teeth 11 can be realized by operating a gear shifting block mechanism, and because the fast gear teeth 32 are connected with the auxiliary shaft 2 in a spline mode, the fast gear teeth 32 drive the transition shaft 3 to synchronously rotate, and the transmission gear on the transition shaft 3 is meshed with the driving gear 22 on the auxiliary shaft 2, so that power is transmitted to the auxiliary shaft 2, and the power transmission in a fast gear state is realized.

One end of the auxiliary shaft 2 is provided with a driving umbrella-shaped tooth 5; the driving bevel gear 5 is engaged with a driven bevel gear 6; the driven bevel gear 6 is fixedly arranged on a driven bevel gear shaft 7; the other end of the driven bevel gear shaft 7 is engaged with a walking bevel gear 9; a walking bevel gear shaft 10 is arranged in the walking bevel gear 9. The effect of this design is: the power of the auxiliary shaft 2 is transmitted downwards, and the power transmission direction is changed, so that the operation requirement of the equipment is met.

And supporting bearings 4 are arranged at two ends of the main shaft 1, the transition shaft 3, the auxiliary shaft 2 and the driven bevel gear shaft 7. The effect of this design is: through the design of support bearing 4, play the supporting role for power transmission is stable.

The number Z of the first driving teeth 111 of the main shaft duplex teeth 11 is 16, and the modulus m is 1.75; the number Z of the second driving teeth 112 is 20, and the modulus m is 1.75; the number of teeth Z of the slow gear 31 is 25, and the modulus m is 1.75. Thus, the transmission ratio between the slow gear 31 and the first driving gear 111 is only 1.56, and the number of teeth and the modulus of the power transmission in the slow gear state are both reduced, thereby reducing the size of the slow gear transmission structure.

The number Z of the second driving teeth 112 is 20, and the modulus m is 1.75; the number Z of the snap tooth 32 is 21, and the modulus m is 1.75. Thus, the transmission ratio of the fast gear 32 to the second driving gear 112 is only 1.05, and the number of teeth and the modulus of power transmission in the fast gear state are both reduced, thereby reducing the size of the fast gear transmission structure.

The tooth number Z of the first reverse gear 211 of the reverse double gear 21 is 33, and the modulus m is 1.75; the number Z of the first driving teeth 111 of the second main shaft double teeth 11 is 16, and the module m is 1.75. Thus, the gear ratio between the first reverse gear tooth 211 and the first driving tooth 111 is only 2.06, and the number of teeth and the module of the power transmission in the reverse gear state are both reduced, thereby reducing the volume of the reverse gear transmission structure.

The number Z of the driving teeth 22 is 32, and the modulus m is 1.75; the number Z of the transmission teeth 33 is 12, and the modulus m is 1.75. This results in a transmission ratio of only 2.67 between the two, with a reduced number of teeth and module, thus reducing the bulk of the power transmission structure.

The main shaft 1 is provided with an axial limiting ring 12 on the inner wall of a first driving tooth 111 of the main shaft duplex tooth 11. By designing the axial limiting ring 12, the movement of the main shaft duplex teeth 11 to the outer end can be limited, so that the unidirectional axial movement of the main shaft duplex teeth 11 is controlled, and the switching between different gear shifting states is realized.

A countershaft lining 23 is arranged at one end of the reverse gear duplex gear 21 far away from the driving gear 22; the two ends of the driving gear 22 are provided with extending sleeves. This design has injectd the axial position of reverse gear duplex tooth 21, because of reverse gear duplex tooth 21 is swing joint with countershaft 2, need carry on spacingly to axial both ends, the going on of assurance power transmission that just can be accurate.

The utility model discloses a plough quick-witted gear drive structure a little, can reduce whole gear drive's number of teeth and modulus, whole transmission structure's is small, and then reduces whole transmission structure's weight and the cost that reduces the complete machine and make.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.

Claims

1. A gear transmission structure of a mini-tiller is characterized by comprising a main shaft, a transition shaft and an auxiliary shaft; the main shaft rotates to drive the transition shaft to rotate; the transition shaft rotates to drive the auxiliary shaft to rotate; the main shaft is connected with main shaft duplex teeth in a spline form; the spindle duplex teeth comprise a first driving tooth and a second driving tooth; the auxiliary shaft is connected with a reverse gear duplex gear and a driving gear, the reverse gear duplex gear is movably connected with the auxiliary shaft, and the driving gear is connected with the auxiliary shaft in a spline mode; the reverse gear duplex teeth comprise a first reverse gear tooth and a second reverse gear tooth; the auxiliary shaft is connected with a slow gear and a fast gear in a spline mode; the second reverse gear tooth is meshed with the slow gear tooth; the auxiliary shaft is also integrally formed with transmission teeth; the transmission gear is meshed with the driving gear; when the main shaft is in a neutral gear state, a first driving tooth of the main shaft duplex teeth is meshed with a first reverse gear tooth of the reverse gear duplex teeth and synchronously rotates; when the main shaft double-coupling gear is in a slow gear state, the main shaft double-coupling gear moves axially, and a first driving gear on the driving double-coupling gear is meshed with a slow gear on the auxiliary shaft and rotates synchronously; when the transmission is in a fast gear state, the main shaft duplex teeth move axially, and the second driving teeth on the driving duplex teeth are meshed with the fast gear teeth on the auxiliary shaft and rotate synchronously.

2. The micro-cultivator gear transmission structure as claimed in claim 1, wherein one end of the auxiliary shaft is provided with a driving bevel gear; the driving bevel gear is engaged with the driven bevel gear; the driven bevel gear is fixedly provided with a driven bevel gear shaft; the other end of the driven bevel gear shaft is engaged with a walking bevel gear; and a walking bevel gear shaft is arranged in the walking bevel gear.

3. The gear transmission structure of the mini-tiller according to claim 2, wherein support bearings are arranged at two ends of the main shaft, the transition shaft, the auxiliary shaft and the driven bevel gear shaft.

4. The gear transmission structure of the mini-tiller according to claim 1, wherein the number Z of the first driving teeth of the main shaft duplex teeth is 16, and the modulus m is 1.75; the number of teeth Z of the second driving tooth is 20 and the modulus m is 1.75.

5. The gear transmission structure of the mini-tiller according to claim 1, wherein the number Z of the first reverse gear tooth of the reverse gear duplex tooth is 33, and the module m is 1.75; the number of teeth Z of the second reverse gear tooth is 19, and the module m is 1.75.

6. The gear transmission structure of the mini-tiller according to claim 1, wherein the number of teeth Z of the driving teeth is 32, and the modulus m is 1.75; the number of teeth Z of the transmission gear is 12, and the modulus m is 1.75.

7. The gear transmission structure of the micro-cultivator of claim 1, wherein the number of teeth Z of the slow gear is 25, and the modulus m is 1.75; the number of the fast gear teeth Z is 21, and the modulus m is 1.75.

8. The gear transmission structure of the micro-cultivator of claim 1, wherein the main shaft is provided with an axial limiting ring on the inner wall of the first driving tooth of the main shaft duplex teeth.

9. The micro-cultivator gear transmission structure of claim 1, wherein a countershaft bushing is mounted at one end of the reverse double tooth far away from the driving tooth; and extension sleeves are arranged at two ends of the driving teeth.