CN215334221U

CN215334221U - Full-tooth transmission mechanism for mini-tiller

Info

Publication number: CN215334221U
Application number: CN202121369530.5U
Authority: CN
Inventors: 窦思勇; 江伟
Original assignee: Chongqing Youyou Power Technology Co ltd
Current assignee: Chongqing Youyou Power Technology Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-12-28
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a full-tooth transmission mechanism for a mini-tiller, which is provided with a middle speed changing device, wherein the middle speed changing device comprises a middle speed changing box, the front end inside the middle speed changing box is provided with a spline housing, the front end of the spline housing is matched with a front output device, the rear end of the spline housing is connected with one end of a main shaft B, the other end of the main shaft B is arranged on a rear cover of the middle speed changing box, the main shaft B is sequentially provided with a gear G, a gear H and a shifter B from front to back, an auxiliary shaft B is arranged below the main shaft B, and the rear end of the middle speed changing device is connected with a rear driving device.

Description

Full-tooth transmission mechanism for mini-tiller

Technical Field

The utility model relates to the technical field of mini-tillers, in particular to an all-gear transmission mechanism for a mini-tillers.

Background

In rural areas of China, the micro-farming machine is more and more widely applied and plays a larger and larger role in plowing, ploughing and farming, the micro-farming machine takes a small diesel engine or a gasoline engine as power and has the characteristics of light weight, small volume, simple structure and the like, the micro-farming machine is widely suitable for dry land, paddy field, orchard and the like in plains, mountainous areas and hills, and can be used for pumping water, generating electricity, spraying medicine, spraying and the like by matching with corresponding machines and tools, and can also be used for towing a trailer for short-distance transportation, the micro-farming machine can be freely run in the field, is convenient for users to use and store, the trouble that large-scale agricultural machinery cannot enter the field block of the mountainous area is eliminated, the micro-farming machine is the best choice for replacing cattle farming by vast farmers and consumers, the existing micro-farming machine gearbox is complex in structure, the increased weight and volume of the micro-farming machine are inconvenient for the users to use, and the existing mechanism adopts chain or conveyor belt transmission, and has a poorer transmission effect, is easy to slip.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an all-tooth transmission mechanism for a mini-tiller, and aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the full-tooth transmission mechanism for the mini-tiller is provided with a middle speed change device, the middle speed change device comprises a middle speed change box, the front end inside the middle speed change box is provided with a spline sleeve, the front end of the spline sleeve is matched with a front output device, the rear end of the spline sleeve is connected with one end of a main shaft B, the other end of the main shaft B is arranged on a rear cover of the middle speed change box, a gear G, a gear H and a shifter B are sequentially arranged on the main shaft B from front to rear, the shifter B comprises a shaft sleeve B, a shifting tooth C, a shifting tooth D, a shifting tooth F and an adjusting groove B are sequentially arranged on the shaft sleeve B from front to rear, an adjusting hole B is formed in the side wall of the middle speed change box, a shifting fork B penetrates through the adjusting hole B, the inner end of the shifting fork B abuts against the adjusting groove B, the outer end of the shifting fork B is connected with an adjusting arm B, an auxiliary shaft B is arranged below the main shaft B, and a rotating hole is formed in the lower part of the rear cover of the middle speed change box, countershaft B wears to establish in the pivoted hole, countershaft B is last to be equipped with gear I, gear assembly B, gear L and gear M from the front to the back in proper order, gear assembly B includes axle sleeve G, gear J and gear K, axle sleeve G establishes on countershaft B, just still be equipped with the bearing between axle sleeve G and the countershaft B, gear J and gear K establish from the front to the back in proper order on the axle sleeve G, gear G with gear I cooperation, gear H and gear J cooperation, gear C with gear K cooperation, gear D with gear L cooperation, gear F and gear M cooperation shift, gear drive arrangement after the rear end is connected to the well decelerator.

Preferably, one end of the auxiliary shaft B penetrating through the rotating hole is provided with bevel teeth E, the rear driving device comprises a rear shell, the front end of the rear shell is connected with the rear end of the middle gearbox, the upper end inside the rear shell is transversely provided with a bevel gear shaft, the upper part inside the rear shell is provided with two bevel teeth F and two bevel teeth G which are arranged oppositely, the bevel teeth F and the bevel teeth G are both connected to the bevel gear shaft, the bevel teeth E are respectively in matched connection with the bevel teeth F and the bevel teeth G, a reversing device is further arranged between the bevel teeth F and the bevel teeth G, the lower part of the rear shell is provided with an output gear, and the output gear is connected with the reversing device through a bridge tooth.

Preferably, the switching-over device includes axle sleeve C, axle sleeve C sets up bevel gear is epaxial, axle sleeve C both ends are equipped with switching-over tooth A and switching-over tooth B respectively, switching-over tooth A with form the switching-over groove between the switching-over tooth B, back casing top is equipped with the switching-over hole, the downthehole reversing bar that wears to be equipped with of switching-over, the conflict of reversing bar inner is in the switching-over inslot, the switching-over arm is connected to the reversing bar outer end, umbrella-type tooth F and umbrella-type tooth G's umbrella-shaped face middle part all is equipped with the internal tooth, switching-over tooth A with umbrella-type tooth F cooperation, switching-over tooth B with umbrella-type tooth G cooperation.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts gear transmission, has light and simple structure, saves a belt and a chain, has simple and compact structure, enables the transmission of power to be more efficient, has more compact structure of the gearbox, has lower gravity center of the mini-tiller, and enhanced operation stability, is also provided with the reversing mechanism, can conveniently adjust the direction of the mini-tiller at any time without influencing the work of the mini-tiller, can be easily operated in narrow areas such as mountainous areas, hills and the like by only adjusting the reversing mechanism, avoids the problems of incapability of turning and high turning difficulty caused by narrow areas, and is provided with hollow gears in the front speed changing device and the middle speed changing device, thereby having larger speed reduction ratio and quicker speed reduction.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic structural diagram of the reversing device of the utility model.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2: the full-tooth transmission mechanism for the mini-tiller is provided with a middle speed change device 1, the middle speed change device 1 comprises a middle speed change box 2, a spline sleeve 3 is arranged at the front end inside the middle speed change box 2, the front end of the spline sleeve 3 is matched with a front output device, the rear end of the spline sleeve 3 is connected with one end of a main shaft B4, the other end of the main shaft B4 is arranged on a rear cover of the middle speed change box 2, a gear G5, a gear H6 and a shifter B7 are sequentially arranged on the main shaft B4 from front to rear, the shifter B7 comprises a shaft sleeve B701, a shift tooth C702, a shift tooth D703, a shift tooth F704 and an adjusting groove B are sequentially arranged on the shaft sleeve B701 from front to rear, an adjusting hole B8 is arranged on the side wall of the middle speed change box 2, a shift fork B9 is arranged in the adjusting hole B8, the inner end of the shift fork B9 is abutted against the adjusting groove B705, the outer end of the shift fork B9 is connected with a shift arm B383, and a countershaft B11 is arranged below the main shaft B4, a rotating hole 12 is arranged at the lower part of a rear cover of the middle gearbox 2, a countershaft B11 is arranged in the rotating hole 12 in a penetrating manner, a gear I13, a gear assembly B40, a gear L16 and a gear M17 are sequentially arranged on the countershaft B11 from front to back, the gear assembly B40 comprises a shaft sleeve G41, a gear J14 and a gear K15, the shaft sleeve G41 is arranged on the countershaft B11, a bearing is further arranged between the shaft sleeve G41 and the countershaft B11, the gear J14 and the gear K15 are sequentially arranged on the shaft sleeve G41 from front to back, the gear G5 is matched with the gear I13, the gear H6 is matched with the gear J14, the gear C702 is matched with the gear K15, the gear D703 is matched with the gear L16, the gear F704 is matched with the gear M17, the rear end of the middle gearbox 1 is connected with a rear driving device 18, one end of the countershaft B11 penetrates through the rotating hole 12, and one end of the rear driving device 19 comprises a bevel gear housing 3920, the front end of the rear shell 20 is connected with the rear end of the middle gearbox 2, the upper end inside the rear shell 20 is transversely provided with a bevel gear shaft 21, the upper part inside the rear shell 20 is provided with two bevel gears F22 and a bevel gear G23 which are oppositely arranged, the bevel gears F22 and the bevel gear G23 are both connected on the bevel gear shaft 21, and the bevel gear E19 is respectively connected with the bevel gear F22 and the bevel gear G23 in a matching manner, as shown in fig. 3: umbrella-type tooth F22 with still be equipped with switching-over device 24 between the umbrella-type tooth G23, back casing 20 lower part is equipped with output gear 32, output gear 32 connects through passing bridge tooth 33 switching-over device 24, switching-over device 24 includes axle sleeve C25, axle sleeve C25 sets up on the umbrella tooth axle 21, axle sleeve C25 both ends are equipped with switching-over tooth A26 and switching-over tooth B27 respectively, switching-over tooth A26 with form switching-over groove 28 between the switching-over tooth B27, back casing 20 top is equipped with switching-over hole 29, wear to be equipped with reversing bar 30 in the switching-over hole 29, reversing bar 30 inner is contradicted in the switching-over groove 28, reversing arm 31 is connected to reversing bar 30 outer end, the umbrella-type face middle part of umbrella-type tooth F22 and umbrella-type tooth G23 all is equipped with the internal tooth, reversing tooth A26 with umbrella-type tooth F22 cooperates, switching-over tooth B27 with umbrella-type tooth G23 cooperates.

The working principle is as follows: the front end of a transmission case 2 is provided with a driving mechanism and a front transmission case, the rear end of the driving mechanism is connected with the front end of the front transmission case, the rear end of the front transmission case extends out of a main shaft A, the rear end of the main shaft A is provided with a latch, the latch of the main shaft A is matched with a spline sleeve 3 so as to drive the spline sleeve 3 to rotate, the spline sleeve 3 is connected with a main shaft B4 so as to drive a main shaft B4 to rotate, the main shaft B4 drives a gear G5, a gear H6 and a shifter B7 to rotate, a secondary shaft B11 is further arranged below the main shaft B4, a gear I13 and a gear J14 are arranged on the secondary shaft B11, the gear G5 and the gear I13 are always matched, the gear H6 and the gear J14 are always matched, so that the gear G5 and the gear H6 simultaneously drive the gear I13 and the gear J14 to rotate respectively, a shift arm B7 is pulled, a shift fork B9 is moved, and the fork B7 is simultaneously driven to move on the main shaft B7 axially, so as to realize the matching of shifting of a first-stage 7 and shifting arm 7 is moved, the gear shifting tooth D703 is matched with the gear L16 to realize two-stage speed change, the gear shifting arm B10 is pulled, the gear shifting fork B9 is moved, and the gear shifting tooth F704 is matched with the gear M17 to realize three-stage speed change;

the auxiliary shaft B11 is also provided with a bevel gear E19, the auxiliary shaft B11 drives the bevel gear E19 to rotate, the bevel gear E19 drives the bevel gear F22 and the bevel gear G23 to rotate oppositely, the reversing arm 31 is pulled, the reversing gear A26 is matched with the inner teeth of the bevel gear F22, so that the bevel gear F22 drives the reversing gear A26 to rotate forwards, the reversing gear A26 drives the bridging tooth 33 to rotate, the bridging tooth 33 drives the output gear 32 to rotate forwards, the reversing arm 31 is pulled backwards, the reversing gear B27 is matched with the inner teeth of the bevel gear G23, the bevel gear G23 drives the reversing gear B27 to rotate backwards, the reversing gear B27 drives the bridging tooth 33 to rotate, and the bridging tooth 33 drives the output gear 32 to rotate backwards.

Claims

1. The mini-tiller is used for a full-tooth transmission mechanism, and is characterized in that: the gear shifting device is provided with a middle speed changing device (1), the middle speed changing device (1) comprises a middle speed changing box (2), a spline sleeve (3) is arranged at the front end inside the middle speed changing box (2), the front end of the spline sleeve (3) is matched with a front output device, the rear end of the spline sleeve (3) is connected with one end of a main shaft B (4), the other end of the main shaft B (4) is arranged on a rear cover of the middle speed changing box (2), a gear G (5), a gear H (6) and a gear shifter B (7) are sequentially arranged on the main shaft B (4) from front to back, the gear shifter B (7) comprises a shaft sleeve B (701), gear shifting teeth C (702), gear shifting teeth D (703), gear shifting teeth F (704) and an adjusting groove B (705) are sequentially arranged on the shaft sleeve B (701) from front to back, an adjusting hole B (8) is formed in the side wall of the middle speed changing box (2), and a gear shifting fork B (9) penetrates through the adjusting hole B (8), the inner end of the gear shifting fork B (9) is abutted against the adjusting groove B (705), the outer end of the gear shifting fork B (9) is connected with a gear shifting arm B (10), a countershaft B (11) is arranged below the main shaft B (4), a rotating hole (12) is formed in the lower portion of the rear cover of the middle gearbox (2), the countershaft B (11) is arranged in the rotating hole (12) in a penetrating manner, a gear I (13), a gear assembly B (40), a gear L (16) and a gear M (17) are sequentially arranged on the countershaft B (11) from front to back, the gear assembly B (40) comprises a shaft sleeve G (41), a gear J (14) and a gear K (15), the shaft sleeve G (41) is arranged on the countershaft B (11), a bearing is further arranged between the shaft sleeve G (41) and the countershaft B (11), the gear J (14) and the gear K (15) are sequentially arranged on the shaft sleeve G (41) from front to back, the gear G (5) is matched with the gear I (13), the gear H (6) is matched with the gear J (14), the gear shifting tooth C (702) is matched with the gear K (15), the gear shifting tooth D (703) is matched with the gear L (16), the gear shifting tooth F (704) is matched with the gear M (17), and the rear end of the middle speed changing device (1) is connected with a rear driving device (18).

2. The full-tooth transmission mechanism for the mini-tiller according to claim 1, characterized in that: one end of the auxiliary shaft B (11) penetrating through the rotating hole (12) is provided with umbrella-shaped teeth E (19), the rear driving device (18) comprises a rear shell (20), the front end of the rear shell (20) is connected with the rear end of the middle gearbox (2), an umbrella tooth shaft (21) is transversely arranged at the upper end in the rear shell (20), two umbrella teeth F (22) and two umbrella teeth G (23) which are oppositely arranged are arranged at the upper part in the rear shell (20), the umbrella-shaped teeth F (22) and the umbrella-shaped teeth G (23) are both connected on the umbrella-shaped tooth shaft (21), and the umbrella-shaped teeth E (19) are respectively matched and connected with the umbrella-shaped teeth F (22) and the umbrella-shaped teeth G (23), a reversing device (24) is arranged between the umbrella-shaped teeth F (22) and the umbrella-shaped teeth G (23), an output gear (32) is arranged at the lower part of the rear shell (20), and the output gear (32) is connected with the reversing device (24) through a bridging tooth (33).

3. The full-tooth transmission mechanism for the mini-tiller according to claim 2, characterized in that: reversing arrangement (24) includes axle sleeve C (25), axle sleeve C (25) set up on bevel gear axle (21), axle sleeve C (25) both ends are equipped with switching-over tooth A (26) and switching-over tooth B (27) respectively, switching-over tooth A (26) with form switching-over groove (28) between switching-over tooth B (27), back casing (20) top is equipped with switching-over hole (29), wear to be equipped with reversing bar (30) in switching-over hole (29), reversing bar (30) inner is contradicted in switching-over groove (28), reversing arm (31) is connected to reversing bar (30) outer end, the umbrella-shaped face middle part of umbrella-shaped tooth F (22) and umbrella-shaped tooth G (23) all is equipped with the internal tooth, switching-over tooth A (26) with umbrella-shaped tooth F (22) cooperation, switching-over tooth B (27) with umbrella-shaped tooth G (23) cooperation.