CN218582186U - Multipurpose vehicle low-speed four-gear manual double-output gearbox - Google Patents

Abstract

The utility model discloses a multipurpose vehicle low-speed four keeps off manual dual output gearbox, including engine clutch module group, four keep off the module group that shifts, advance and retreat shift module group, work output leave the module group and the differential module group that traveles. Compared with the prior art, the utility model has the advantages that the multifunctional vehicle has two outputs of the work output separating die block set and the running differential module set, and the work output separating die block set and the running differential module set can be independently controlled, so that the work output separating die block set can stop working when the multifunctional vehicle runs, and the working power of an engine is reduced; the forward/reverse rotation transmission of the driving differential module group is realized by the gearbox under the action of the forward and backward shifting module group, and the forward/reverse rotation of four different gear speeds of the driving differential module group can be realized by the operation of the four-gear shifting module group, so that the applicability of the gearbox on multipurpose vehicles such as snow sweeper, mower and the like is improved.

Description

Multipurpose vehicle low-speed four-gear manual double-output gearbox

Technical Field

The utility model relates to a utility vehicle technical field relates to the utility vehicle gearbox, especially relates to the manual dual output gearbox of four fender of utility vehicle low-speed.

Background

The multipurpose vehicle can adapt to different occasions, the working head can be conveniently disassembled and assembled to realize multiple purposes, the common working head comprises a snow sweeping head, a snow throwing head, a snow pushing shovel, a grass cutting head, a grass crushing head, a mini-tiller, a ditcher, a sweeper and the like, and the multipurpose vehicle can be used for multiple purposes only by simply replacing the working head, so that the cost is saved, and the benefit maximization is realized.

Compared with other vehicles, the utility vehicle has the greatest characteristic of being provided with a power output to provide power for other working heads, and meanwhile, in order to adapt to different occasions and different requirements of the working heads, the utility vehicle has more complex structure, more comprehensive functions, more comfortable operation and wider application compared with other single special vehicles.

The existing multipurpose vehicle is expanded by a sweeper, a hydraulic system is adopted, the rotating speed is high, the cost is high, the applicability is poor, another patent with the publication number of CN204055361U provides a four-wheel-drive self-propelled multifunctional tiller, the gearbox structure of the four-wheel-drive self-propelled multifunctional tiller is complex, the size is heavy, the working output end has no clutch control function, the output rotating speed is related to the running speed, and the working rotating speed of the working head is influenced by the gear speed, so that the working efficiency cannot be reasonably matched with the running speed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses multipurpose vehicle gearbox structure to snow sweeper, lawn mower, street sweeper is complicated, and the volume is heavy, and the rotational speed is fast, and the drawback that output speed and speed of traveling are correlated with each other, the utility model aims to solve the technical problem that a section four shelves that advance are provided, retreat four shelves, and the maximum speed of traveling is no longer than 15km/h, and not only provides multiple optional rotational speed and power requirement for the vehicle traveles, provides corresponding rotational speed and power for various working heads simultaneously to the manual dual output gearbox of the multipurpose vehicle low-speed four fender that do not correlate.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: multipurpose vehicle low-speed four-gear manual double-output gearbox: the four-gear shifting mechanism comprises an engine clutch module group, a four-gear shifting module group, a forward and backward shifting module group, a work output disengaging module group and a running differential module group;

the engine clutch module set includes: the clutch comprises a clutch main body and a shifting fork, wherein the clutch main body is a normally closed clutch and is used for connecting a transmission main shaft and an engine;

the fourth keeps off module group that shifts includes: an output shaft, a transition gear shaft, a first gear driven gear, a variable speed driving gear sleeve, a variable speed driven gear sleeve and a first gear shifting block,

the transition gear shaft is sleeved outside the transmission main shaft, a first meshing gear fixed with the transition gear shaft is arranged on the transition gear shaft sleeve, a long spline is arranged on the transition gear shaft sleeve, a first-gear driven gear penetrates through the transition gear shaft, and the first-gear driven gear freely rotates on the transition gear shaft;

the first gear shifting block acts on the variable-speed driving gear sleeve and drives the variable-speed driving gear sleeve to axially move;

the output shaft is parallel to the transmission main shaft, a variable-speed driven gear sleeve and a driving and driven gear are sleeved on the output shaft, the variable-speed driven gear sleeve and the driving and driven gear respectively rotate freely with the output shaft, the transmission main shaft and the variable-speed driven gear sleeve are in transmission connection through a forward and backward gear shifting module group, the driving and driven gear is used for matching the forward and backward gear shifting module group to change direction, and the driving and driven gear is always in meshing transmission with teeth on the transmission main shaft;

the speed change driven gear is sleeved with four gear teeth, one of the four gear teeth is always meshed with the first gear driven gear, the speed change driving gear is sleeved with three gear teeth, the speed change driving gear sleeve is linked with the first gear driven gear when moving to change gears, or the speed change driving gear sleeve is meshed with different gear teeth of the speed change driven gear sleeve to change gears when moving to change gears, the speed change driving gear sleeve drives the first meshing gear to finally rotate, the output shaft is provided with a second meshing gear which freely rotates, the first meshing gear transmits the final speed to the second meshing gear, and the second meshing gear is connected with the driving differential module group;

the running differential module group includes: the power output gear set comprises a first power output gear, a second power output gear and a third power output gear, wherein the first power output gear is rotatably mounted on a first side of the power input gear;

the direction changing tooth group comprises a fixed frame, a direction changing tooth II and a direction changing tooth III which are rotationally connected with the fixed frame;

the power input tooth is meshed with the first direction changing tooth through the bevel gear structure, the first direction changing tooth is meshed with the first power output tooth through the bevel gear structure, the direction changing tooth group is fixedly connected with the first direction changing tooth through a fixing frame, the second power output tooth and the third power output tooth are arranged on the fixing frame and rotatably mounted, the second direction changing tooth and the third direction changing tooth are located between the second power output tooth and the third power output tooth, and the second power output tooth and the third power output tooth are meshed with the second direction changing tooth and the third direction changing tooth through the bevel gear structure;

the axis of the power input tooth is vertical to the axis of the first deflecting tooth, the axis of the first deflecting tooth is vertical to the axis of the first power output tooth, and the three axes of the first deflecting tooth, the second power output tooth and the third power output tooth are collinear;

the work output separating and assembling module group comprises: the second gear shifting block acts on the output clutch gear and drives the output clutch gear to axially move;

the output clutch gear is sleeved on the output shaft, the inner ring of the output clutch gear is connected with the output shaft through a tooth socket, the outer ring of the output clutch gear is connected with the outer ring of the main driven gear through a tooth socket, and the gear shifting block II acts on the output clutch gear and drives the output clutch gear to move axially, so that the output clutch gear is combined with and separated from the output shaft or the main driven gear; the end part of the output shaft is connected with an external joint.

The utility model discloses further preferred scheme does: the advance and retreat shift module group includes: the forward and backward clutch gear, the third gear shifting block, the carrier gear and the carrier gear seat;

the driving and reversing clutch gear is sleeved on the driving and driven gear and the variable speed driven gear sleeve, tooth grooves are formed in the variable speed driven gear sleeve and the driving and driven gear, and a gear ring meshed with the variable speed driven gear sleeve and the driving and driven gear is arranged on the inner ring of the driving and reversing clutch gear;

the gear shifting block III acts on the advancing and retreating clutch gear and drives the advancing and retreating clutch gear to axially move so that the advancing and retreating clutch gear is combined with or separated from the variable-speed driven gear sleeve;

the intermediate gear is rotatably arranged on an intermediate gear seat, the intermediate gear seat is relatively fixed on the gear box, and the intermediate gear is always meshed with the teeth on the transmission main shaft for rotation;

when the forward and backward clutch gear is combined with the main driven gear and the driven gear, the forward and backward clutch gear is separated from the carrier gear, and the forward and backward clutch gear is in primary transmission with the transmission main shaft;

when the forward and backward clutch gear is separated from the main driven gear and the driven gear, the outer ring gear of the forward and backward clutch gear is meshed with the carrier gear, and the forward and backward clutch gear and the transmission main shaft perform secondary transmission and rotate reversely.

The utility model discloses further preferred scheme does: the advancing and retreating shifting module group also comprises an advancing and retreating shifting block rocker arm and an advancing and retreating rocker arm bracket, wherein one end of the three shifting block shifting blocks is inserted into the advancing and retreating shifting block rocker arm, and the advancing and retreating shifting block rocker arm is arranged on the advancing and retreating rocker arm bracket.

The utility model discloses further preferred scheme does: the clutch body includes a wet clutch.

The utility model discloses further preferred scheme does: the box body is provided with the running differential module group, and the turning teeth IV are arranged outside the box body.

The utility model discloses further preferred scheme does: the power output gear is arranged in the box body, the power output gear I, the power output gear II and the power output gear are arranged in the box body in a one-to-one mode, the power input gear is arranged in the box body in the position of the input mounting port, and the turning gear IV is arranged in the position of the input mounting port outside the box body in the position of the input mounting port.

The utility model discloses further preferred scheme does: the second power output gear and the third power output gear both comprise a bevel gear piece and a gear shaft which are detachably connected, and the gear shaft is connected with the bevel gear piece in an inserting mode through a spline structure.

The utility model discloses further preferred scheme does: the fixed frame is provided with an inner cavity, and the power output teeth II and the power output teeth III are rotatably arranged in the inner cavity.

The utility model discloses further preferred scheme does: be equipped with the shrinkage pool of sunken setting on two relative walls in the inner chamber, two shrinkage pool axle centers collineations, and be equipped with on the mount with shrinkage pool axle center collinear through-hole, the through-hole runs through the mounting bracket, umbrella tooth spare is installed in the shrinkage pool one to one, and the inserted shaft from through-hole department plug-in connection umbrella tooth spare.

The utility model discloses further preferred scheme does: the fixing frame is provided with a side opening which is convenient for the installation of the umbrella tooth part.

Compared with the prior art, the utility model has the advantages that the gearbox has exquisite structure, reasonable layout and high integration, and comprises an engine clutch module group, a four-gear shifting module group, a forward and backward shifting module group, a work output separating module group and a running differential module group, wherein the work output separating module group and the running differential module group are mutually independent, and the work rotating speed is not influenced by the running speed, so that the running speed can be artificially controlled to realize the maximum working efficiency; the utility model has the advantages of still be a low-speed four grades of gearboxes, four gears of advancing retreat, four gears are retreated, lower speed, and more gear selections more can match the speed requirement of various working heads to let the utility vehicle use more extensively.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are merely drawn for the purpose of illustrating the preferred embodiments and therefore should not be considered as limiting the scope of the present invention, and that, unless otherwise indicated, the drawings merely illustrate conceptually and may contain exaggerated displays of the composition or construction of objects described, and are not necessarily drawn to scale.

FIG. 1 is a schematic structural view of a dual output transmission according to a preferred embodiment of the present invention;

FIG. 2 is an exploded view of a dual output transmission in accordance with a preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of a preferred embodiment dual output transmission of the present invention;

FIG. 4 is one of the schematic structural diagrams of the connection of the module groups in the dual output transmission according to the preferred embodiment of the present invention;

FIG. 5 is a second schematic diagram of the connection of the module sets in the dual output transmission according to the preferred embodiment of the present invention;

FIG. 6 is a schematic structural view of the inside of the second box according to the preferred embodiment of the present invention;

FIG. 7 is one of the exploded views of the various module groups within the preferred embodiment dual output transmission of the present invention;

FIG. 8 is a second exploded view of the various module groups in the dual output transmission of the preferred embodiment of the present invention;

fig. 9 is a schematic structural diagram of a fourth gear shift module group according to a preferred embodiment of the present invention;

fig. 10 is a schematic structural view of a third case body provided with a running differential module group according to a preferred embodiment of the present invention;

FIG. 11 is one of the cross-sectional views of the third housing with the traveling differential module set installed therein according to the preferred embodiment of the present invention;

fig. 12 is a second cross-sectional view of a third housing with a traveling differential module set installed therein according to a preferred embodiment of the present invention;

FIG. 13 is an exploded view of the set of steering teeth in the preferred embodiment of the present invention;

fig. 14 is a schematic structural diagram of a third box according to a preferred embodiment of the present invention.

In the figure: 1. an engine main body; 2. a transmission main shaft; 3. a driving driven gear and a driven gear; 4a, a first box body, 4b, a second box body, 4c, a third box body, 4c-1, an input mounting port, 4c-2, a first output mounting port, 4c-3, a second output mounting port, 4c-4 and a third output mounting port;

01. engine clutch module group: 5. a clutch body; 6. a shifting fork; 7. a clutch yoke;

02. a fourth gear shifting module group: 8. an output shaft 8-1, a meshing gear II, 8-2 and an outer joint; 9. a transition gear shaft sleeve 9-1 and a meshing gear I; 10. a first-gear driven gear; 11. a variable speed drive gear sleeve; 12. a variable speed driven gear sleeve; 13. a first gear shifting block; 14. a gear shifting block rocker arm;

03. advance and retreat shift module group: 15. an advancing/retreating clutch gear; 16. a third gear shifting block; 17. a forward and backward shifting block rocker arm; 18. a carrier gear; 19. a carrier gear seat;

04. work output disengaging module group: 20. an output clutch gear; 21. a gear shifting block II; 22. outputting a clutch shifting block rocker arm;

05. a running differential module group: 23. direction changing teeth IV; 24. a power input tooth; 25. a connecting shaft; 26. a first direction changing tooth; 27a, a first power output gear 27b, a second power output gear 27c, a third power output gear 27-1, a bevel gear piece 27-2 and a spindle; 28. a first bearing; 29. a clamp spring I; 30. a second bearing; 31. a second clamp spring; 32. a clamp spring III; 33. a clamp spring IV; 34. a third bearing; 35. a cover plate; 05a, a direction changing tooth group: 36. a fixing frame 36-1, concave holes 36-2, through holes 36-3 and side openings; 37. a second direction changing tooth; 38. a turning tooth III; 39. a rotating shaft.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and those skilled in the art will appreciate that these descriptions are illustrative only, exemplary and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

The embodiment mainly explains the low-speed four-gear manual dual-output gearbox of the utility vehicle, which has high adaptability, four different gear speeds for forward/backward movement and a working head capable of working independently of the running of wheels, and the gearbox is as follows:

as shown in fig. 1 to 14, the low-speed four-gear manual dual-output gearbox of the utility vehicle comprises an engine clutch module group 01, a four-gear shifting module group 02, a forward and reverse shifting module group 03, a work output disengaging module group 04, a traveling differential module group 05, and three boxes arranged outside the above module groups, wherein the three boxes are provided with a transmission main shaft 2 connecting the engine clutch module group 01 and an engine main body 1, the engine clutch module group 01, the four-gear shifting module group 02, the forward and reverse shifting module group 03, the work output disengaging module group 04, and the transmission main shaft 2 are arranged in a box body one 4a and a box body two 4b, and the traveling differential module group 05 is arranged in a box body three 4c, in the embodiment, the box body one 4a is arranged between the box body two 4b and the engine main body 1, and the box body three 4c is arranged below the box body two 4 b.

The engine clutch module group 01 includes: clutch main part 5, shift fork 6 and clutch shift arm 7, clutch main part 5 is used for connecting transmission main shaft 2 and engine, shift fork 6 connects clutch main part 5, and clutch shift arm 7 connects shift fork 6, can drive shift fork 6 along 2 axial activities of transmission main shaft through operation clutch shift arm 7, and control clutch main part 5 and engine main part 1 and be connected or separate, it is preferred, clutch main part 5 is the clutch of normal close formula, and for guaranteeing the long service life of clutch main part 5, clutch main part 5 optional wet clutch.

As shown in fig. 9, the fourth shift module group 02 includes: the gear shifting device comprises an output shaft 8, a transition gear shaft sleeve 9, a first-gear driven gear 10, a variable-speed driving gear sleeve 11, a variable-speed driven gear sleeve 12, a first gear shifting block 13 and a first gear shifting block rocker arm 14;

the transition gear shaft sleeve 9 is sleeved outside the transmission main shaft 2 in a penetrating manner and is rotatably installed, a first meshing gear 9-1 fixed with the transition gear shaft sleeve 9 is arranged on the transition gear shaft sleeve 9, a long spline is arranged on the transition gear shaft sleeve 9, a first-gear driven gear 10 is rotatably sleeved on the transition gear shaft sleeve 9 in a penetrating manner, and the first-gear driven gear 10 freely rotates on the transition gear shaft sleeve 9;

the variable-speed driving gear sleeve 11 is arranged on a long spline of the transition gear shaft sleeve 9, the variable-speed driving gear sleeve 11 is matched with the long spline, the gear shifting block rocker arm 14 is connected with the variable-speed driving gear sleeve 11 through the gear shifting block I13, and the gear shifting block rocker arm 14 can drive the variable-speed driving gear to axially slide and displace on the long spline of the transition gear shaft sleeve 9 through the gear shifting block I13 by operating the gear shifting block rocker arm 14;

the rotating axis of the output shaft 8 is parallel to the rotating axis of the transmission main shaft 2, a main driven gear 3 penetrating and sleeved on the output shaft 8 is arranged, a variable-speed driven gear sleeve 12 and a main driven gear 3 are sleeved on the output shaft 8, the variable-speed driven gear sleeve 12 and the main driven gear 3 respectively rotate freely with the output shaft 8, the transmission main shaft 2 is always meshed with the main driven gear 3, the transmission main shaft 2 is in transmission connection with the variable-speed driven gear sleeve 12 through a forward and backward shift module group 03, the main driven gear 3 is used for matching with the forward and backward shift module group 03 to change direction, and the main driven gear 3 is always meshed with teeth on the transmission main shaft 2 for transmission;

three gear teeth, namely a first second gear tooth, a first third gear tooth and a first fourth gear tooth, are arranged on the variable speed driving gear sleeve 11, and four gear teeth, namely a second first gear tooth, a second gear tooth, a second third gear tooth and a second fourth gear tooth, are arranged on the variable speed driven gear sleeve 12, wherein the first gear driven gear 10 is always meshed with the second first gear tooth on the variable speed driven gear sleeve 12, the gear shifting block rocker arm 14 is operated, the gear shifting block rocker arm 14 drives the variable speed driving gear sleeve 11 to move through the gear shifting block I13, so that any one of the first second gear tooth, the second gear tooth, the first third gear tooth, the second third gear tooth, the first fourth gear tooth and the second fourth gear tooth is meshed to change gears, the first gear 9-1 is driven by the variable speed driving gear sleeve 11 to finally rotate, a second meshing gear 8-1 which rotates freely is arranged on the output shaft 8, and the first meshing gear 9-1 transmits the final speed to the second meshing gear 8-1.

The forward and reverse shift block group 03 includes: in the embodiment, the carrier gear seat 19 is fixed in the second box body 4b, the carrier gear 18 is rotatably installed on the carrier gear seat 19, the carrier gear 18 always rotates in tooth engagement with the transmission spindle 2, the advancing and retreating clutch gear 15 is sleeved on the transmission driven gear sleeve 12 and the master and slave gear 3, tooth grooves are formed in the transmission driven gear sleeve 12 and the master and slave gear 3, a gear ring engaged with the transmission driven gear sleeve 12 and the master and slave gear 3 is arranged on an inner ring of the advancing and retreating clutch gear 15, the advancing and retreating carrier rocker arm 17 is operated, the advancing and retreating carrier rocker arm 17 stirs the advancing and retreating clutch gear 15 to axially move on the advancing and retreating clutch gear 15 through the carrier block three 16, so that the transmission driven gear sleeve 12 can be combined with or separated from the master and slave gear 3 through the advancing and retreating clutch gear 15.

Preferably, the forward and backward clutch gear 15 is slidably mounted on the speed change driven gear sleeve 12 and the primary driven gear 3 through a spline structure.

In this embodiment, the second meshing gear 8-1 on the output shaft 8 has four different gear speeds in two states of forward rotation or reverse rotation by the forward and backward clutch gear 15 and the axial movement of the speed change driving gear sleeve 11.

The first state: the driving and reversing clutch gear 15 is matched with the tooth socket through a gear ring and is simultaneously combined and connected with the driving and driven gear 3 and the variable-speed driven gear sleeve 12, at the moment, the driving and reversing clutch gear 15 is separated from the intermediate gear 18, the transmission main shaft 2 is meshed with the driving and driven gear 3 to rotate, and the driving and driven gear 3 drives the variable-speed driven gear sleeve 12 to rotate through the driving and reversing clutch gear 15;

and a second state: the advancing and retreating clutch gear 15 is axially shifted along the advancing and retreating clutch gear 15, so that the advancing and retreating clutch gear 15 is meshed with the intermediate gear 18, the advancing and retreating clutch gear 15 is in matched transmission connection with the variable-speed driven gear sleeve 12 and the intermediate gear 18 through a gear ring and a gear groove, at the moment, the advancing and retreating clutch gear 15 is separated from the main driven gear 3, the transmission main shaft 2 is meshed with the intermediate gear 18 to drive the advancing and retreating clutch gear 15 to rotate, and the advancing and retreating clutch gear 15 drives the variable-speed driven gear sleeve 12 to rotate through a spline structure;

preferably, the two states are opposite in the direction of rotation of the shift driven gear sleeve 12, i.e., the two states are opposite in the direction of rotation transmitted to the meshing gear wheel two 8-1.

In any one of the two states, when the transmission is in the first gear speed, the first gear driven gear 10 is meshed with a second first gear on the variable speed driven gear sleeve 12, the first gear driven gear is acted by the gear shifting block rocker arm 14 and the first gear shifting block 13, the variable speed driving gear sleeve 11 slides axially and is inserted into the first gear driven gear 10 through a tooth space structure, and the first gear driven gear 10 drives the transition gear shaft sleeve 9, the meshing gear I9-1 and the meshing gear II 8-1 on the output shaft 8 to rotate through the variable speed driving gear sleeve 11;

when the transmission gear is at the second gear speed, the third gear speed or the fourth gear speed, the transmission driving gear sleeve 11 is separated from the first gear driven gear 10, the transmission driving gear sleeve 11 is shifted to slide axially through the action of the gear shifting block rocker arm 14 and the gear shifting block I13, three gear teeth on the transmission driving gear sleeve 11 are meshed with one pair of gear teeth in the rest three gear teeth on the transmission driven gear sleeve 12, the rotating speeds of the transition gear sleeve 9, the meshing gear I9-1 and the meshing gear II 8-1 on the output shaft 8 are different through the difference of the gear tooth ratios of the meshed pair of gear teeth, and preferably, the meshing gear II 8-1 on the output shaft 8 has four different gear speeds in two states of forward rotation or reverse rotation.

As shown in fig. 10 to 14, the traveling differential module group 05 includes: the four direction changing teeth 23 are rotatably arranged, the power input teeth 24, the first direction changing teeth 26, the first power output teeth 27a, the direction changing teeth group 05a, the second power output teeth 27b and the third power output teeth 27c, the four direction changing teeth 23 are rotatably meshed with the second meshing gear 8-1, except the four direction changing teeth 23, the four direction changing teeth are arranged in the third box body 4c, the four direction changing teeth 23 are arranged outside the third box body 4c and are meshed and connected with the second meshing gear 8-1 on the output shaft 8, and preferably, the four direction changing teeth are positioned in the first box body 4 a.

The rotation axes of the power input tooth 24 and the direction changing tooth four 23 are collinear, and the rotation axes of the direction changing tooth one 26, the power output tooth two 27b and the power output tooth three 27c are collinear.

The power input tooth 24 is meshed with the first direction changing tooth 26 through a bevel tooth structure, the first direction changing tooth 26 is meshed with the first power output tooth 27a through the bevel tooth structure, preferably, the rotating shaft center of the power input tooth 24 is perpendicular to the rotating shaft center of the first direction changing tooth 26, and the rotating shaft center of the first power output tooth 27a is perpendicular to the rotating shaft centers of the power input tooth 24 and the first direction changing tooth 26.

The second box body 4b is provided with a cavity, the second box body 4b is provided with an input mounting port 4c-1 and three output mounting ports, the input mounting port 4c-1 and the three output mounting ports are communicated with the cavity, and the three output mounting ports outside the second box body 4b are provided with cover plates 35 for plugging and fixing.

The direction changing gear four 23 is arranged at the input mounting port 4c-1 outside the box body, the power input gear 24 is arranged at the input mounting port 4c-1 in the cavity, an inserted connecting shaft 25 is arranged between the direction changing gear four 23 and the power input gear 24, the connecting shaft 25 is inserted into the direction changing gear four 23 and the power input gear 24 through a spline structure, and the direction changing gear four 23 and the power input gear 24 are fixedly connected with the connecting shaft 25 through screws or nuts.

The first power output tooth 27a is arranged at the first output mounting opening 4c-2 in the second box body 4b, the second power output tooth 27b is arranged at the second output mounting opening 4c-3 in the second box body 4b, and the third power output tooth 27c is arranged at the third output mounting opening 4c-4 in the second box body 4 b.

The direction changing tooth group 05a comprises a fixed frame 36, a direction changing tooth II 37 and a direction changing tooth III 38, a rotating shaft 39 is arranged on the fixed frame 36, the direction changing tooth II 37 and the direction changing tooth III 38 are rotatably connected with the rotating shaft 39, the fixed frame 36 is provided with an inner cavity, concave holes 36-1 which are concavely arranged are formed in two opposite side walls of the inner cavity of the fixed frame 36, the two concave holes 36-1 are coaxially arranged, a through hole 36-2 communicated with the inner cavity is formed in the fixed frame 36, the through hole 36-2 and the concave hole 36-1 are coaxially arranged, the size of the through hole 36-2 is smaller than that of the concave hole 36-1, the power output tooth II 27b and the power output tooth III 27c are arranged in the concave hole 36-1 in a one-to-one mode and rotatably mounted, the direction changing tooth II 37 and the direction changing tooth III 37 are positioned between the power output tooth III 27b and the power output tooth III 27c, and the power output tooth III 27 b/power output tooth 27c are meshed with the direction changing tooth II 37 and the direction changing tooth 38 through bevel structures.

Preferably, the fixed frame 36 is provided with a side port 36-3 communicated with the inner cavity, and the second power output tooth 27b, the third power output tooth 27c, the second direction-changing tooth 37 and the third direction-changing tooth 38 can be arranged in the inner cavity of the fixed frame 36 from the side port 36-3.

In order to facilitate installation of the first power output tooth 27a, the second power output tooth 27b and the third power output tooth 27c, the first power output tooth 27a, the second power output tooth 27b and the third power output tooth 27c can be disassembled into the bevel gear piece 27-1 and the inserting shaft 27-2, the bevel gear piece 27-1 and the inserting shaft 27-2 are inserted and connected through a spline structure, the second power output tooth 27b and the bevel gear piece 27-1 of the third power output tooth 27c can be installed from the side opening 36-3 of the fixing frame 36, the first power output tooth 27a, the second power output tooth 27b and the inserting shaft 27-2 of the third power output tooth 27c are inserted and connected with the cover plate 35 at the input installation opening 4c-1 of the power output tooth, the cover plate 35 extends out of the cover plate 27-2, and the fixing frame 36 and the first power output tooth 27a are limited by the cover plate 35.

In order to ensure the smooth rotation of the power input tooth 24, the first direction changing tooth 26, the first power output tooth 27a, the second power output tooth 27b and the third power output tooth 27c, a first bearing 28 is installed in the input installation opening 4c-1 of the second box body 4b in a limiting mode, and a first snap spring 29 for limiting the first bearing 28 to be separated is arranged in the input installation opening 4 c-1; and a second bearing 30 is arranged in each cover plate 35 arranged at the three output mounting openings outside the second box body 4b, and the inserted shafts 27-2 of the first power output tooth 27a, the second power output tooth 27b and the third power output tooth 27c are inserted into the second bearing 30.

The bevel gear part 27-1 and the inserted shaft 27-2 of the first power output tooth 27a are fixed through screws, a second snap spring 31 is clamped on the inserted shaft 27-2 of the first power output tooth 27a, and the second snap spring 31 limits the inserted shaft 27-2 of the first power output tooth 27a and a second bearing 30 in a cover plate 35 inserted into the inserted shaft 27-2.

The bearing II 30 in the cover plate 35 inserted with the inserted shaft 27-2 of the power output tooth II 27 b/power output tooth III 27c is limited by the clamp spring III 32, the clamp spring III 32 does not contact with the inserted shaft 27-2 of the power output tooth II 27 b/power output tooth III 27c, the inserted shaft 27-2 of the power output tooth II 27 b/power output tooth III 27c is clamped with the clamp spring IV 33, and the power output tooth II 27 b/power output tooth III 27c is limited and mounted by the clamp spring IV 33.

A third bearing 34 is arranged between the second output mounting opening 4c-3 and the third output mounting opening 4c-4 and a fixed cover plate 35 thereof, the third bearing 34 is inserted and sleeved on the inserting shaft 27-2 of the second power output tooth 27b and the third power output tooth 27c, the third bearing 34 inserted and sleeved on the inserting shaft 27-2 of the second power output tooth 27b is positioned between the first direction changing tooth 26 and the cover plate 35, the third bearing 34 inserted and sleeved on the inserting shaft 27-2 of the third power output tooth 27c is positioned between the fixed frame 36 and the cover plate 35, and preferably, the first direction changing tooth 26 is inserted and sleeved on the inserting shaft 27-2 of the third power output tooth 27c.

In this embodiment, the differential module group 05 that traveles is an output of the present invention, and the work output is separated from the module group 04, which is another output of the present invention.

The work output separation module group 04 includes: the output clutch gear 20 is sleeved on the output shaft 8, the inner ring of the output clutch gear 20 is in sliding connection with the output shaft 8 through a spline or a tooth groove structure, the outer ring of the output clutch gear 20 is in sliding connection with the outer ring of the main driven gear 3 through a spline or a tooth groove structure, the gear shifting block two 21 acts on the output clutch gear 20, and the output clutch gear 20 can be driven to move along the axial direction of the output shaft 8 by operating the output clutch shifting block rocker 22, so that the output clutch gear 20 is combined with and separated from the output shaft 8 or the main driven gear 3.

In this embodiment, the end of the output shaft 8 is connected with the external joint 8-2, and the external joint 8-2 extends out of the second box body 4 b.

When the output clutch gear 20 is combined with the main driven gear 3 and the output shaft 8, the main driven gear 3 drives the output shaft 8 and the outer joint 8-2 to rotate through the output clutch gear 20; when the output clutch gear 20 slides to the primary driven gear 3 or the output shaft 8 and the primary driven gear 3 is separated from the output shaft 8, the transmission main shaft 2 drives the rotating primary driven gear 3 to be not connected with the output shaft 8, that is, the primary driven gear 3 rotates, but the output shaft 8 does not rotate.

Preferably, one end of the output shaft 8 is provided with a second meshing gear 8-1, the other end of the output shaft is provided with an outer joint 8-2, and the second meshing gear 8-1 is arranged close to the engine main body 1.

In this embodiment, the utility vehicle low-speed four-gear manual dual-output gearbox is a gearbox specially developed for the utility vehicle, is completely different from gearboxes used on common vehicles in the current market, and has the following outstanding characteristics:

1. the maximum speed of the low-speed gearbox does not exceed 15km/h and is far lower than the rotating speed of the gearbox used by a common vehicle.

2. Four keep off manual gearbox, with the structure that ordinary gearbox is totally different, through optimal design, realize four keep off that advance, four keep off that retreat, multiple selection, manual gear shifting, safe and reliable.

3. The double-output gearbox not only provides various optional rotating speed and power requirements for the running of a vehicle, but also provides corresponding rotating speed and power for various working heads.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

It is right above the utility model provides a multipurpose vehicle low-speed four keep off manual dual output gearbox has carried out detailed introduction, and it is right here to have used specific individual example the utility model discloses a principle and embodiment have explained, and the description of above embodiment only is used for helping to understand the utility model discloses and core thought should point out, to ordinary skilled person in this technical field, under the prerequisite that does not deviate from the utility model discloses the principle, can also be right the utility model discloses it carries out a plurality of improvements and embellishments, and these are improved and embellishment and also fall into the scope of protection of the utility model claims.

Claims (10)

1. The multipurpose vehicle low-speed four-gear manual double-output gearbox is characterized by comprising an engine clutch module group, a four-gear shifting module group, a forward and backward shifting module group, a working output separation module group and a running differential module group;

the engine clutch module set includes: the clutch comprises a clutch main body and a shifting fork, wherein the clutch main body is a normally closed clutch and is used for connecting a transmission main shaft and an engine;

the fourth gear shift module group comprises: an output shaft, a transition gear shaft, a first gear driven gear, a variable speed driving gear sleeve, a variable speed driven gear sleeve and a first gear shifting block,

the transition gear shaft is sleeved outside the transmission main shaft, a first meshing gear fixed with the transition gear shaft is arranged on the transition gear shaft sleeve, a long spline is arranged on the transition gear shaft sleeve, a first-gear driven gear penetrates through the transition gear shaft, and the first-gear driven gear freely rotates on the transition gear shaft;

the first gear shifting block acts on the variable-speed driving gear sleeve and drives the variable-speed driving gear sleeve to axially move;

the output shaft is parallel to the transmission main shaft, a variable-speed driven gear sleeve and a driving and driven gear are sleeved on the output shaft, the variable-speed driven gear sleeve and the driving and driven gear are respectively and freely rotated with the output shaft, the transmission main shaft and the variable-speed driven gear sleeve are in transmission connection through a driving and reversing gear shifting module group, the driving and driven gear is used for being matched with the driving and reversing gear shifting module group to change the direction, and the driving and driven gear is always in meshing transmission with teeth on the transmission main shaft;

the speed change driven gear is sleeved with four gear teeth, one of the four gear teeth is always meshed with the first gear driven gear, the speed change driving gear is sleeved with three gear teeth, the speed change driving gear sleeve is linked with the first gear driven gear when moving to change gears, or the speed change driving gear sleeve is meshed with different gear teeth of the speed change driven gear sleeve to change gears when moving to change gears, the speed change driving gear sleeve drives the first meshing gear to finally rotate, the output shaft is provided with a second meshing gear which freely rotates, the first meshing gear transmits the final speed to the second meshing gear, and the second meshing gear is connected with the driving differential module group;

the running differential module group includes: the power output gear set comprises a first power output gear, a second power output gear and a third power output gear, wherein the first power output gear is rotatably mounted on a first side of the power input gear;

the direction changing tooth group comprises a fixed frame, a direction changing tooth II and a direction changing tooth III which are rotatably connected with the fixed frame;

the power input tooth is meshed with the first direction changing tooth through the bevel gear structure, the first direction changing tooth is meshed with the first power output tooth through the bevel gear structure, the direction changing tooth group is fixedly connected with the first direction changing tooth through a fixing frame, the second power output tooth and the third power output tooth are arranged on the fixing frame and rotatably mounted, the second direction changing tooth and the third direction changing tooth are located between the second power output tooth and the third power output tooth, and the second power output tooth and the third power output tooth are meshed with the second direction changing tooth and the third direction changing tooth through the bevel gear structure;

the axis of the power input tooth is vertical to the axis of the first direction changing tooth, the axis of the direction changing tooth is vertical to the axis of the first power output tooth, and the three axes of the first direction changing tooth, the second power output tooth and the third power output tooth are collinear;

the work output separating and assembling module group comprises: the second gear shifting block acts on the output clutch gear and drives the output clutch gear to move axially;

the output clutch gear is sleeved on the output shaft, the inner ring of the output clutch gear is connected with the output shaft through a tooth socket, the outer ring of the output clutch gear is connected with the outer ring of the main driven gear through a tooth socket, and the gear shifting block II acts on the output clutch gear and drives the output clutch gear to move axially, so that the output clutch gear is combined with and separated from the output shaft or the main driven gear; the end part of the output shaft is connected with an external joint.

2. The utility vehicle low-speed four-gear manual dual-output gearbox of claim 1, wherein the forward and reverse shift module set comprises: the advancing and retreating clutch gear, the gear shifting block III, the intermediate gear and the intermediate gear seat;

the driving and reversing clutch gear is sleeved on the driving and driven gear sleeve and the variable speed driven gear sleeve, tooth grooves are formed in the variable speed driven gear sleeve and the driving and driven gear sleeve, and a gear ring meshed with the variable speed driven gear sleeve and the driving and driven gear is arranged on an inner ring of the driving and reversing clutch gear;

the gear shifting block III acts on the advancing and retreating clutch gear and drives the advancing and retreating clutch gear to move axially, so that the advancing and retreating clutch gear is combined with or separated from the variable speed driven gear sleeve;

the intermediate gear is rotatably arranged on an intermediate gear seat, the intermediate gear seat is relatively fixed on the gear box, and the intermediate gear is always meshed with the teeth on the transmission main shaft to rotate;

when the driving and reversing clutch gear is combined with the main driven gear and the driven gear, the driving and reversing clutch gear is separated from the carrier gear, and the driving and reversing clutch gear is in primary transmission with the transmission main shaft;

when the driving and reversing clutch gear is separated from the driving and driven gears, the outer ring gear of the driving and reversing clutch gear is meshed with the gap bridge gear, and the driving and reversing clutch gear and the transmission main shaft perform secondary transmission and rotate reversely.

3. The utility vehicle low-speed four-gear manual dual-output gearbox of claim 2, wherein the forward and backward shift module set further comprises a forward and backward shifting block rocker arm and a forward and backward rocker arm bracket, wherein one end of the shift block is inserted into the forward and backward shifting block rocker arm, and the forward and backward shifting block rocker arm is mounted on the forward and backward rocker arm bracket.

4. The utility vehicle low-speed four-gear manual dual output transmission of claim 1, wherein said clutch body comprises a wet clutch.

5. The utility vehicle low-speed four-gear manual double-output gearbox is characterized in that a box body for mounting the running differential module group is arranged, and the direction-changing gear four is arranged outside the box body.

6. The utility model discloses a multipurpose vehicle low-speed four-gear manual dual output gearbox, characterized in that, be equipped with an input installing port and three output installing port on the box, power take off tooth one, power take off tooth two and power take off tooth three one to one locate the installation of output installing port in the box, power take off tooth locates the installation of input installing port department in the box, just change tooth four locates the installation of input installing port department outside the box.

7. The utility vehicle low-speed four-gear manual double-output gearbox of claim 1, characterized in that the second and third power output gears each comprise a bevel gear piece and a pinion shaft which are detachably connected, and the pinion shaft is inserted into the bevel gear piece through a spline structure.

8. The utility vehicle low-speed four-gear manual double-output gearbox of claim 7, characterized in that the fixed frame is provided with an inner cavity, and the second power output tooth and the third power output tooth are rotatably installed in the inner cavity.

9. The utility model discloses a multipurpose vehicle low-speed four-gear manual dual output gearbox, characterized in that, be equipped with the sunken shrinkage pool that sets up on two relative walls in the inner chamber, two shrinkage pool axle centers collineation are equipped with the through-hole with shrinkage pool axle center collineation on the mount, and the through-hole runs through the mounting bracket, the umbrella tooth spare is installed in the shrinkage pool one to one, and the plug shaft is from through-hole plug-in connection umbrella tooth spare.

10. The utility vehicle low-speed four-gear manual double-output gearbox of claim 9, wherein the fixing frame is provided with a side port for facilitating the installation of the bevel gear part.

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