CN205534052U

CN205534052U - Speed changing apparatus

Info

Publication number: CN205534052U
Application number: CN201521034758.3U
Authority: CN
Inventors: 严华
Original assignee: Weima Agricultural Machinery Co ltd
Current assignee: Weima Agricultural Machinery Co ltd
Priority date: 2015-12-12
Filing date: 2015-12-12
Publication date: 2016-08-31
Anticipated expiration: 2025-12-12

Abstract

The utility model discloses a speed changing apparatus, main shaft and countershaft including parallel arrangement, wherein the main shaft is including setting up first main shaft and the the second spindle on same straight line, the cover is equipped with input gear on the first main shaft, admittedly, it has first master gear to overlap at the second spindle, the cover is equipped with main shaft dual gea, the countershaft includes first countershaft and second layshaft, first countershaft, second layshaft and main shaft three are parallel, the loop has countershaft dual gear on first countershaft, gu the cover has fast block driven gear and keeps off driven gear slowly, loop reverse gear on second layshaft, slip through input gear realizes the just transform of input speed, slide through main shaft dual gea, be equipped with the 3rd shifting fork mechanism on reverse gear, the control of the 3rd shifting fork mechanism reverse gear slide, the switching that the realization was reversed gear. Structure more than adopting provides the fender position of reversing gear that ging forward of four kinds of friction speeds kept off position and two kinds of friction speeds, is applicable to the various farming conditions of production, satisfies the actual needs of production.

Description

Gear

Technical field

This utility model belongs to agricultural machinery technological field, is specifically related to a kind of gear.

Background technology

Tiller, with small diesel engine or gasoline engine as power, has lightweight, and volume is little, simple in construction etc. Feature.Tiller is widely used in Plain, mountain area, the nonirrigated farmland on hills, paddy field, orchard etc..Mix corresponding Facility can carry out drawing water, generate electricity, spray the operation such as medicine, spray, also can draw towed vehicle and carry out short-distance transport, Tiller freely can be exercised in field, it is simple to user uses and deposits, and eliminating large-scale farm machinery cannot Enter the worry of mountain area field, be the vast farmers consumer optimum selection that substitutes that cattle is ploughed.

Only being joined directly together by ring flange between electromotor and the change speed gear box of tradition tiller, power passes through one Main shaft is directly delivered in change speed gear box, change speed gear box with walking case be respectively integrated, have in change speed gear box main shaft, countershaft, Reverse gear shaft, three kinds of axles.By stirring the duplex spur gear position on main shaft, reverse gear shaft, can realize keeping off soon, Slowly keeping off and reverse gear, gear is few, thus the advance of tiller is relative with the speed fallen back single, only especially reverses gear There is one, there is significant limitation in actual farming, it is impossible to meet and produce actual needs.More than solution Problem becomes the task of top priority.

Utility model content

For solving above technical problem, this utility model provides a kind of novel structure, designs variable-speed motor cleverly Structure.

For achieving the above object, technical solutions of the utility model are as follows:

A kind of gear, it is characterized by: include that main shaft and countershaft, described main shaft include being arranged on same The first main shaft (1) on straight line and the second main shaft (2), the either end of this first main shaft (1) and described the The either end kink of two main shafts (2) connects, and is set with input gear (5) on described first main shaft (1), This input gear (5) can slide axially along described first main shaft (1), close described second main shaft (2) One end of described first main shaft (1) is installed with the first master gear (6), at the upper set of described second main shaft (2) Equipped with the second master gear (7a) and the 3rd master gear (7b), wherein the second master gear (7a) is positioned at described Between one master gear (6) and described 3rd master gear (7b), described second master gear (7a) and the 3rd master Between gear (7b), fixing connection, forms main shaft duplicate gear (7), and this main shaft duplicate gear (7) can edge Described second main shaft (2) slides axially, and is provided with the first clutch tooth (13) on described input gear (5), Described first master gear (6) is provided with the second clutch tooth (14)；Described countershaft includes the first countershaft (3) With the second countershaft (4), this first countershaft (3), described second countershaft (4) and described main shaft three are the most flat OK, the upper kink of the first countershaft (3) has the first pinion (8a) and the second pinion (8b) wherein, should Between first pinion (8a) and described second pinion (8b), fixing connection, forms countershaft duplicate gear (8), described first countershaft (3) is installed with and keeps off driven gear (9) soon and keep off driven gear (10) slowly, Described fast gear driven gear (9) is positioned at countershaft duplicate gear (8) and keeps off between driven gear (10) slowly, Either end at the first countershaft (3) is provided with the first bevel gear (12), at the upper kink of described second countershaft (4) There is reverse gear (11)；Described second pinion (8b) is engaged with described first master gear (6), described Input gear (5) along described first main shaft (1) slide axially time, make this input gear (5) and described One pinion (8a) engages, or makes described first clutch tooth (13) and described second clutch tooth (14) nibble Close, described main shaft duplicate gear (7) along the second main shaft (2) slide axially time, make described second master gear (7a) engage with described fast gear driven gear (9), or make described 3rd master gear (7b) and described slow gear Driven gear (10) engage, described main shaft duplicate gear (7) be positioned at described fast gear driven gear (9) and Time between described slow gear driven gear (10), by described reverse gear (11) along described second countershaft (4) Slide axially, make described reverse gear (11) simultaneously with described 3rd master gear (7b) and described slow gear from Moving gear (10) engages；Described reverse gear (11) is provided with the 3rd shifting fork mechanism (21), the 3rd Shifting fork mechanism (21) includes that axle (21b) installed by the 3rd shift fork, installs appointing of axle (21b) at the 3rd shift fork One end is provided with the 3rd shifting fork piece (21a), is arranged with reverse gear reset pressure on described second countershaft (4) Spring, this reverse gear reseting pressuring spring and described 3rd shifting fork piece (21a) lay respectively at described reverse gear (11) Both sides, described 3rd shifting fork piece (21a) promotes reverse gear (11) sliding to reverse gear reseting pressuring spring direction Dynamic, described reverse gear reseting pressuring spring reversely promotes reverse gear (11) to reset, in described 3rd shift fork peace The other end of dress axle (21b) connects the rocking arm that reverses gear and installs axle (21c), and this rocking arm that reverses gear installs axle (21c) Connect the rocking arm (21d) that reverses gear.

Use above structure, novel structure, design ingenious, by the slip of input gear (5), it is achieved the One main shaft (1) the high low speed friction speed transmission to the second main shaft (2), in conjunction with main shaft duplicate gear (7) Slip and the 3rd shifting fork mechanism (21) control reverse gear (11) slip, provide four kinds of differences altogether The forward range of output speed, the gear that reverses gear of two kinds of different output speeds, thus before realizing doubling Enter gear and the gear that reverses gear, it is adaptable to the various farming conditions of production and environment, meet and produce actual needs.

As preferably: be provided with inner chamber described first main shaft (1) near one end of described second main shaft (2) (15), described second main shaft (2) stretches into this inner chamber (15) near one end of described first main shaft (1), The inserting end of this second main shaft (2) and the cavity wall of described inner chamber (15) are by the first needle bearing (16) even Connect.Use above structure, make contact surface be become sliding friction from rolling friction, effectively reduce the mill of part Damage speed.

As preferably: described countershaft duplicate gear (8) and described first countershaft (3) are by the second needle roller axle Hold (17) to connect.Use above structure, make contact surface be become sliding friction from rolling friction, effectively reduce The rate of wear of part.

As preferably: described input gear (5) and described first main shaft (1) are connected by spline.Use Above structure, simple and reliable for structure, it is achieved input gear (5) slides axially along the first main shaft (1).

As preferably: be installed with reverse gear mounting seat (18) on described second countershaft (4), described fall Gear gear (11) kink is in this reverse gear mounting seat (18).Use above structure, reverse gear (11) Directly do not acted on during slip, add the stability of structure, extend service life.

Beneficial effect: use the gear of above technical scheme, simple in construction is novel, it is provided that four kinds are not With forward range and the gear that reverses gear of two kinds of friction speeds of speed, thus realize the gear doubled, suitable For the various farming conditions of production and environment, meet and produce actual needs.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the left view of Fig. 1；

Fig. 3 is that Fig. 2 is along the profile at B-B.

Detailed description of the invention

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.

As Figure 1-3, a kind of gear, including main shaft and countershaft, described main shaft includes being arranged on same The first main shaft 1 and the second main shaft 2 on straight line, the either end of this first main shaft 1 is appointed with described second main shaft 2 One end kink connects, and is i.e. provided with inner chamber 15, institute at described first main shaft 1 near one end of described second main shaft 2 State the second main shaft 2 and stretch into this inner chamber 15 near one end of described first main shaft 1, the inserting end of this second main shaft 2 and The cavity wall of described inner chamber 15 is connected by the first needle bearing 16, is set with input tooth on described first main shaft 1 Wheel 5, described input gear 5 and described first main shaft 1 are connected by spline, make this input gear 5 can be along described First main shaft 1 slides axially, and is installed with first at described second main shaft 2 near one end of described first main shaft 1 and leads Gear 6, is set with the second master gear 7a and the 3rd master gear 7b on described second main shaft 2, and wherein second is main Gear 7a between described first master gear 6 and described 3rd master gear 7b, described second master gear 7a and Fixing between three master gear 7b connecting, form main shaft duplicate gear 7, this main shaft duplicate gear 7 can be along described the Two main shafts 2 slide axially, and are provided with the first clutch tooth 13 on described input gear 5, at described first master gear 6 It is provided with the second clutch tooth 14；Described countershaft includes the first countershaft 3 and the second countershaft 4, this first countershaft 3, institute Stating the second countershaft 4 and described main shaft three is parallel to each other, on the first countershaft 3, kink has the first pinion wherein Between 8a and the second pinion 8b, this first pinion 8a and described second pinion 8b, fixing connection, is formed Countershaft duplicate gear 8, described countershaft duplicate gear 8 and described first countershaft 3 are by the second needle bearing 17 even Connect, described first countershaft 3 be installed with fast gear driven gear 9 and slow gear driven gear 10, described fast gear from Moving gear 9 is between countershaft duplicate gear 8 and slow gear driven gear 10, and the either end at the first countershaft 3 is provided with First bevel gear 12, on described second countershaft 4, kink has reverse gear 11, i.e. on described second countershaft 4 Being installed with reverse gear mounting seat 18, described reverse gear 11 kink is in this reverse gear mounting seat 18；Institute Stating the second pinion 8b to engage with described first master gear 6, described input gear 5 is axial along described first main shaft 1 During slip, make this input gear 5 and described first pinion 8a engagement, or make described first clutch tooth 13 and institute State the second clutch tooth 14 to engage, described main shaft duplicate gear 7 along the second main shaft 2 slide axially time, make described Two master gear 7a and described fast gear driven gear 9 engage, or make described 3rd master gear 7b and described slow gear driven Gear 10 engages, and described main shaft duplicate gear 7 is positioned at described fast gear driven gear 9 and described slow gear driven gear Time between 10, described reverse gear 11 is slid axially along described second countershaft 4, make described reverse gear 11 same Time engage with described 3rd master gear 7b and described slow gear driven gear 10.

As it is shown in figure 1, be provided with the first shifting fork mechanism (19), this first shift fork on described input gear (5) Mechanism (19) includes that axle (19b) installed by the first shift fork, installs the either end of axle (19b) at this first shift fork First shifting fork piece (19a) is installed, described input gear (5) is provided with the first fork slot, described first Shifting fork piece (19a) stretches into this first fork slot, promotes described input gear (5) sliding along the first main shaft (1) Dynamic, the other end connection installing axle (19b) at described first shift fork has the first rocking arm to install axle (19c), should First rocking arm installs axle (19c) connection the first rocking arm；

As it is shown in figure 1, be provided with the second shifting fork mechanism (20) on described main shaft duplicate gear (7), this is second years old Shifting fork mechanism (20) includes that axle (20b) installed by the second shift fork, installs appointing of axle (20b) at this second shift fork One end is provided with the second shifting fork piece (20a), and this second shifting fork piece (20a) stretches into described second master gear (7a) With the 3rd between master gear (7b), described main shaft duplicate gear (7) is promoted to slide along the second main shaft (2), Installing the upper connection of axle (20b) at described second shift fork has reset rocking bar to install axle (20c), and this reset rocking bar is pacified Dress axle (20c) connects reduction torsion spring drag-line rocking bar；

As it is shown in figure 1, be provided with the 3rd shifting fork mechanism (21) on described reverse gear (11), the 3rd group Fork mechanism (21) includes that axle (21b) installed by the 3rd shift fork, installs the arbitrary of axle (21b) at the 3rd shift fork End is provided with the 3rd shifting fork piece (21a), is arranged with reverse gear reseting pressuring spring on described second countershaft (4), This reverse gear reseting pressuring spring and described 3rd shifting fork piece (21a) lay respectively at described reverse gear (11) two Side, described 3rd shifting fork piece (21a) promotes reverse gear (11) to slide to reverse gear reseting pressuring spring direction, Described reverse gear reseting pressuring spring reversely promotes reverse gear (11) to reset, and installs axle at described 3rd shift fork (21b) the other end connects the rocking arm that reverses gear and installs axle (21c), and this rocking arm that reverses gear installs axle (21c) even It is connected to the rocking arm (21d) that reverses gear.

When low speed keeps off advance slowly, the first shifting fork mechanism 19 controls input gear 5 and slides axially, and makes input gear 5 With the first pinion 8a engagement, the first main shaft 1 drives input gear 5 to rotate, and input gear 5 drives countershaft duplex Gear 8 rotates, and countershaft duplicate gear 8 drives the first master gear 6 to rotate, and the first master gear 6 drives the second main shaft 2 Rotating, the second main shaft 2 drives main shaft duplicate gear 7 to rotate, and the second shifting fork mechanism 20 controls main shaft duplicate gear 7 Slide axially, make the 3rd master gear 7b and slow gear driven gear 10 engage, main shaft duplicate gear 7 drive slow gear from Moving gear 10 rotates, and slow gear driven gear 10 drives the first countershaft 3 to rotate, and the first countershaft 3 drives the first cone tooth Wheel 12 rotation.

When low speed keeps off advance soon, the first shifting fork mechanism 19 controls input gear 5 and slides axially, and makes input gear 5 With the first pinion 8a engagement, the first main shaft 1 drives input gear 5 to rotate, and input gear 5 drives countershaft duplex Gear 8 rotates, and countershaft duplicate gear 8 drives the first master gear 6 to rotate, and the first master gear 6 drives the second main shaft 2 Rotating, the second main shaft 2 drives main shaft duplicate gear 7 to rotate, and the second shifting fork mechanism 20 controls main shaft duplicate gear 7 Slide axially, make the second master gear 7a and fast gear driven gear 9 engage, main shaft duplicate gear 7 drive fast gear from Moving gear 9 rotates, and fast gear driven gear 9 drives the first countershaft 3 to rotate, and the first countershaft 3 drives the first bevel gear 12 rotate.

When low speed reverses gear, the first shifting fork mechanism 19 controls input gear 5 and slides axially, and makes input gear 5 and One pinion 8a engagement, the first main shaft 1 drives input gear 5 to rotate, and input gear 5 drives countershaft duplicate gear 8 rotate, and countershaft duplicate gear 8 drives the first master gear 6 to rotate, and the first master gear 6 drives the second main shaft 2 to rotate, Second main shaft 2 drives main shaft duplicate gear 7 to rotate, and the second shifting fork mechanism 20 controls main shaft duplicate gear 7 and axially slides Dynamic, make main shaft duplicate gear 7 at fast gear driven gear 9 and keep off slowly between driven gear 10, then the 3rd group Fork mechanism 21 controls reverse gear mounting seat 18 and slides along the second countershaft 4, makes kink in reverse gear mounting seat 18 Reverse gear 11 simultaneously with the 3rd master gear 7b and keep off driven gear 10 slowly and engage, now the 3rd master gear 7b Driving reverse gear 11 to rotate, reverse gear 11 drives slow gear driven gear 10 to rotate, slow gear driven gear 10 Driving the first countershaft 3 to rotate, the first countershaft 3 drives the first bevel gear 12 to rotate.

When the slowest gear advances, the first shifting fork mechanism 19 controls input gear 5 and slides axially, makes input gear 5 Separating with the first pinion 8a, the first clutch tooth 10 and the second clutch tooth 11 engage, and the first main shaft 1 drives Second main shaft 2 rotates, and the first master gear 6 drives countershaft duplicate gear 8 to dally, and the second main shaft 2 drives main shaft double Connection gear 7 rotates, and the second shifting fork mechanism 20 controls main shaft duplicate gear 7 and slides axially, and makes the 3rd master gear 7b Engaging with slow gear driven gear 10, main shaft duplicate gear 7 drives slow gear driven gear 10 to rotate, and keeps off driven tooth slowly Wheel 10 drive the first countershaft 3 rotates, and the first countershaft 3 drives the first bevel gear 12 to rotate.

When the fastest gear advances, the first shifting fork mechanism 19 controls input gear 5 and slides axially, makes input gear 5 Separating with the first pinion 8a, the first clutch tooth 10 and the second clutch tooth 11 engage, and the first main shaft 1 drives Second main shaft 2 rotates, and the first master gear 6 drives countershaft duplicate gear 8 to dally, and the second main shaft 2 drives main shaft double Connection gear 7 rotates, and the second shifting fork mechanism 20 controls main shaft duplicate gear 7 and slides axially, and makes the second master gear 7a Engaging with fast gear driven gear 9, main shaft duplicate gear 7 drives fast gear driven gear 9 to rotate, and keeps off driven gear soon 9 drive the first countershaft 3 to rotate, and the first countershaft 3 drives the first bevel gear 12 to rotate.

When reversing gear at a high speed, the first shifting fork mechanism 19 controls input gear 5 and slides axially, and makes input gear 5 and the One pinion 8a separates, and the first clutch tooth 10 and the second clutch tooth 11 engage, the first main shaft 1 drive second Main shaft 2 rotates, and the first master gear 6 drives countershaft duplicate gear 8 to dally, and the second main shaft 2 drives main shaft duplex-gear Wheel 7 rotation, the second shifting fork mechanism 20 controls main shaft duplicate gear 7 and slides axially, makes main shaft duplicate gear 7 be positioned at Between fast gear driven gear 9 and slow gear driven gear 10, then the 3rd shifting fork mechanism 21 controls reverse gear installation Seat 18 slides along the second countershaft 4, and the reverse gear 11 making kink in reverse gear mounting seat 18 is simultaneously main with the 3rd Gear 7b and slow gear driven gear 10 engage, and now the 3rd master gear 7b drives reverse gear 11 to rotate, and reverses gear Gear 11 drives slow gear driven gear 10 to rotate, and slow gear driven gear 10 drives the first countershaft 3 to rotate, and first is secondary Axle 3 drives the first bevel gear 12 to rotate.

It is last it is to be appreciated that foregoing description is only preferred embodiment of the present utility model, those skilled in the art Member is under enlightenment of the present utility model, on the premise of this utility model objective and claim, and can To represent as making multiple types, within such conversion each falls within protection domain of the present utility model.

Claims

1. a gear, it is characterised in that: include that main shaft and countershaft, described main shaft include being arranged on together The first main shaft (1) on one straight line and the second main shaft (2), the either end of this first main shaft (1) is with described The either end kink of the second main shaft (2) connects, and is set with input gear (5) on described first main shaft (1), This input gear (5) can slide axially along described first main shaft (1), close described second main shaft (2) One end of described first main shaft (1) is installed with the first master gear (6), at the upper set of described second main shaft (2) Equipped with the second master gear (7a) and the 3rd master gear (7b), wherein the second master gear (7a) is positioned at described Between one master gear (6) and described 3rd master gear (7b), described second master gear (7a) and the 3rd master Between gear (7b), fixing connection, forms main shaft duplicate gear (7), and this main shaft duplicate gear (7) can edge Described second main shaft (2) slides axially, and is provided with the first clutch tooth (13) on described input gear (5), Described first master gear (6) is provided with the second clutch tooth (14)；

Described countershaft includes the first countershaft (3) and the second countershaft (4), this first countershaft (3), described second Countershaft (4) and described main shaft three are parallel to each other, and the upper kink of the first countershaft (3) has the first secondary tooth wherein Wheel (8a) and the second pinion (8b), this first pinion (8a) and described second pinion (8b) it Between fixing connect, form countershaft duplicate gear (8), described first countershaft (3) be installed with fast gear driven Gear (9) and keep off driven gear (10) slowly, described fast gear driven gear (9) is positioned at countershaft duplicate gear (8) Slowly keeping off between driven gear (10), the either end at the first countershaft (3) is provided with the first bevel gear (12), Reverse gear (11) is had at the upper kink of described second countershaft (4)；

Described second pinion (8b) is engaged with described first master gear (6), described input gear (5) Along described first main shaft (1) slide axially time, make this input gear (5) and described first pinion (8a) Engagement, or make described first clutch tooth (13) and described second clutch tooth (14) engagement, described main shaft is double Connection gear (7) along the second main shaft (2) slide axially time, make described second master gear (7a) and described soon Gear driven gear (9) engagement, or make described 3rd master gear (7b) and described slow gear driven gear (10) Engagement, described main shaft duplicate gear (7) is positioned at described fast gear driven gear (9) and described slow gear driven tooth Time between wheel (10), described reverse gear (11) is slid axially along described second countershaft (4), makes institute State reverse gear (11) to nibble with described 3rd master gear (7b) and described slow gear driven gear (10) simultaneously Close；

Described reverse gear (11) is provided with the 3rd shifting fork mechanism (21), the 3rd shifting fork mechanism (21) Installing axle (21b) including the 3rd shift fork, the either end installing axle (21b) at the 3rd shift fork is provided with the 3rd Shifting fork piece (21a), is arranged with reverse gear reseting pressuring spring, this reverse gear on described second countershaft (4) Reseting pressuring spring and described 3rd shifting fork piece (21a) lay respectively at described reverse gear (11) both sides, and described Three shifting fork pieces (21a) promote reverse gear (11) to reverse gear reseting pressuring spring direction slide, described in reverse gear Reset gear stage clip reversely promotes reverse gear (11) to reset, and installs axle (21b) at described 3rd shift fork The other end connects the rocking arm that reverses gear and installs axle (21c), and this rocking arm installation axle (21c) connection of reversing gear is reversed gear and shaken Arm (21d).

Gear the most according to claim 1, it is characterised in that: lean on described first main shaft (1) One end of the most described second main shaft (2) is provided with inner chamber (15), and described second main shaft (2) is near described first This inner chamber (15) is stretched in one end of main shaft (1), the inserting end of this second main shaft (2) and described inner chamber (15) Cavity wall by the first needle bearing (16) connect.

Gear the most according to claim 1 and 2, it is characterised in that: described countershaft duplicate gear (8) Connected by the second needle bearing (17) with described first countershaft (3).

Gear the most according to claim 3, it is characterised in that: described input gear (5) and institute State the first main shaft (1) to be connected by spline.

5. according to the gear described in claim 1 or 2 or 4, it is characterised in that: at described second countershaft (4) being installed with reverse gear mounting seat (18) on, described reverse gear (11) kink is at this reverse gear In mounting seat (18).