CN214248173U

CN214248173U - Engineering vehicle transmission

Info

Publication number: CN214248173U
Application number: CN202023109216.1U
Authority: CN
Inventors: 高向锋; 杨国栋; 李举; 石阳; 李乐; 武娜
Original assignee: Shandong Menwo Transmission Co ltd
Current assignee: Shandong Menwo Transmission Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-09-21
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses an engineering vehicle derailleur, the utility model discloses a shell, input shaft, jackshaft, output shaft, the assembly of shifting and drive gear group, the input shaft is located same straight line with the output shaft, the jackshaft parallels with the output shaft and sets up, among the drive gear group: a third cone synchronizer is arranged between the first-gear of the output shaft and the second-gear of the output shaft, a first single cone synchronizer is arranged between the normally engaged gear of the output shaft and the third-gear of the output shaft, and a second single cone synchronizer is arranged between the fifth-gear of the output shaft and the reverse gear of the output shaft. The utility model discloses a set up the tricone synchronizer between second gear, make it shift more smooth-going, operate more laborsavingly, reduce operator's operation fatigue and feel.

Description

Engineering vehicle transmission

Technical Field

The utility model belongs to the technical field of the derailleur technique and specifically relates to an engineering vehicle derailleur.

Background

A rear-drive transmission for a present engineering vehicle is designed with two-stage gear transmission, and synchronizers of all gears are arranged on a second stage. In a neutral state, gears of all gears rotate simultaneously, and the requirement on the capacity of a synchronizer of all gears is high, so that the gears are difficult to shift, stuck, heavy in hand feeling, easy to fatigue or incapable of shifting during running. Such a failure is common in existing rear drive transmissions and has high customer complaints.

SUMMERY OF THE UTILITY MODEL

The utility model aims at above not enough, provide an engineering vehicle derailleur for in engineering vehicle's the back-drive, promote the ride comfort of user's the operation of shifting.

The utility model adopts the technical proposal that:

the utility model provides an engineering vehicle derailleur, includes shell, input shaft, jackshaft, output shaft, shifts assembly and drive gear group, the input shaft is located same straight line with the output shaft, jackshaft and output shaft parallel arrangement, among the drive gear group: the output shaft first gear is meshed with the intermediate shaft first gear, the output shaft fifth gear is meshed with the intermediate shaft fifth gear, the output shaft reverse gear is meshed with the intermediate shaft first gear through an idler, a third cone synchronizer is arranged between the output shaft first gear and the output shaft second gear, a first single cone synchronizer is arranged between the output shaft normally-closed gear and the output shaft third gear, and a second single cone synchronizer is arranged between the output shaft fifth gear and the output shaft reverse gear.

As further optimization, the tricone synchronizer that sets up between output shaft first gear and the output shaft second gear includes tooth cover, tooth hub and sets up two sets of tricone external members in tooth hub both sides, the tooth hub is installed in the tooth cover, the tricone external member includes outer loop, zhonghuan and inner ring, just inner ring, zhonghuan and outer loop cup joint together in proper order, be provided with the gear centrum on output shaft first gear and the output shaft second gear are close to the terminal surface of tricone synchronizer, the gear centrum includes friction portion and meshing portion, the inner ring cup joints on the friction portion of gear centrum, there is the state that is connected in the meshing portion of tooth cover and gear centrum.

As further optimization, tooth cover among the three-cone synchronizer with the meshing modulus of the gear centrum is 1.5, and the number of meshing teeth of tooth cover is 63.

As further optimization, the contact surface among the outer ring, the middle ring and the inner ring in the three-cone external member is a conical surface, and the cone angle of the conical surface is 7.5 degrees.

As further optimization, the width of tooth cover is 21.9mm, and the spacing groove degree of depth of tooth cover is 4.15mm, and the stroke of tricone synchronous ware is 8.4 mm.

As further optimization, the internal gear teeth of the gear sleeve have a stop angle of 118 degrees and an auxiliary taper angle of 7-9 degrees.

The utility model has the advantages of it is following:

1. the utility model discloses a set up the tricone synchronizer between second gear, make it shift more smooth-going, operate more laborsavingly, reduce operator's operation fatigue and feel.

2. The utility model discloses reduce three awl synchronous ware spline modulus, adopt the little spline, the number of teeth, short stroke synchronous ware has increased each shelves synchronous ware capacity in, the light smooth-going nothing of gear shift is stuck in the driving, and the operation is felt more comfortablely.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any inventive work.

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a right-side schematic view of the present invention;

FIG. 3 is a schematic illustration of the internal construction of the transmission;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Wherein: 1. the gear shifting device comprises a shell, 2, an input shaft, 3, a gear shifting assembly, 4, an output shaft, 5, a middle shaft, 6, an input shaft normally engaged gear, 7, a first single-cone synchronizer, 8, an output shaft third gear, 9, an output shaft second gear, 10, a three-cone synchronizer, 11, an output shaft first gear, 12, an output shaft reverse gear, 13, a second single-cone synchronizer, 14, an output shaft fifth gear, 15, a middle shaft normally engaged gear, 16, a middle shaft third gear, 17, a middle shaft second gear, 18, a middle shaft first gear, 19, an idler, 20, a middle shaft fifth gear, 21, a gear sleeve, 22, an outer ring, 23, a middle ring, 24, an inner ring, 25, a gear cone, 26 and a gear hub.

Detailed Description

The present invention is further described with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not intended to limit the present invention, and technical features in the embodiments and examples of the present invention can be combined with each other without conflict.

It is to be understood that the terms first, second, etc. used in the description of the embodiments of the present invention are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The term "a plurality" in the embodiments of the present invention means two or more.

The embodiment of the present invention belongs to "and/or", which is only an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, B exists alone, and A and B exist at the same time. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

The embodiment provides an engineering vehicle transmission, as shown in fig. 1 to 3, including a housing 1, an input shaft 2, an intermediate shaft 5, an output shaft 4, a gear shift assembly 3, and a transmission gear set, where the input shaft 2 and the output shaft 4 are located on the same straight line, the intermediate shaft 5 and the output shaft 4 are arranged in parallel, the transmission gear set includes an input shaft normally-engaged gear 6 arranged on the input shaft 2, an output shaft third-gear 8, an output shaft second-gear 9, an output shaft first-gear 11 arranged on the output shaft 4 in sequence, an output shaft reverse gear 12, an output shaft fifth-gear 14, and an intermediate shaft normally-engaged gear 15, an intermediate shaft third-gear 16, an intermediate shaft second-gear 17, an intermediate shaft first-gear 18, an intermediate shaft fifth-gear 20 arranged on the intermediate shaft 5 in sequence, and an idler 19 used for reverse gear reversing: the output shaft constant gear 15 is meshed with the input shaft constant gear 6, the output shaft third gear 8 is meshed with the intermediate shaft third gear 16, the output shaft second gear 9 is meshed with the intermediate shaft second gear 17, the output shaft first gear 11 is meshed with the intermediate shaft first gear 18, the output shaft fifth gear 14 is meshed with the intermediate shaft fifth gear 20, the output shaft reverse gear 12 is meshed with the intermediate shaft first gear 18 through an idle gear 19, a third cone synchronizer 10 is arranged between the output shaft first gear 11 and the output shaft second gear 9, a first single cone synchronizer 7 is arranged between the output shaft constant gear 6 and the output shaft third gear 8, a second single cone synchronizer 13 is arranged between the output shaft fifth gear 14 and the output shaft reverse gear 12, and the first single cone synchronizer 7 and the second single cone synchronizer 13 can be realized by adopting the prior art.

As shown in fig. 4, the third cone synchronizer 10 disposed between the output shaft first gear 11 and the output shaft second gear 9 in this embodiment includes a gear sleeve 21, a gear hub 26, and two sets of third cone kits disposed on two sides of the gear hub 26, where the gear hub 26 is mounted in the gear sleeve 21, the third cone kits are located between the gear hub 26 and the gear sleeve 21, the third cone kits include an outer ring 22, a middle ring 23, and an inner ring 24, the middle ring 23, and the outer ring 22 are sequentially sleeved together, contact surfaces between the outer ring 22, the middle ring 23, and the inner ring 24 in the third cone kits are conical surfaces, a conical angle of the conical surfaces is 7.5 °, the conical surfaces can increase a friction area between the ring bodies, and increase a capacity of the synchronizer, a gear cone 25 is disposed on end surfaces of the output shaft first gear 11 and the output shaft second gear 9 near the third cone synchronizer 10, the gear cone 25 includes a friction portion and a meshing portion, the inner ring 24 is sleeved on a friction part of the gear cone 25, the meshing parts of the gear sleeve 21 and the gear cone 25 are in a connected state, as an optimization, the meshing modulus of the gear sleeve 21 and the gear cone 25 in the three-cone synchronizer 10 is 1.5, the number of meshing teeth of the gear sleeve 21 is 63, and the capacity of the synchronizer is further improved.

In a preferred embodiment, the width of the gear sleeve 21 is 21.9mm, the depth of the limit groove of the gear sleeve 21 is 4.15mm, and the stroke of the three-cone synchronizer 10 is 8.4 mm. The stop angle at two ends of the inner engagement tooth of the gear sleeve 21 is 118 degrees, the auxiliary cone angle is 7-9 degrees, the locking angle of the gear sleeve 21 and the auxiliary cone angle are large, and the short synchronizer can be effectively prevented from being out of gear.

The working principle is as follows: the three-cone synchronizer 10 is provided with three lantern rings of an inner ring 24, a middle ring 23 and an outer ring 22, when a first gear and a second gear are switched, taking the first gear as an example, the rotating speed of the first gear 11 of the output shaft and the rotating speed of the gear sleeve 21 are the same through the friction force of each conical surface, a synchronization effect is achieved, when the rotating speeds of the first gear and the second gear are close, the gear sleeve 21 and the first gear 11 of the output shaft are completely meshed, the gear shifting process is completed, the phenomena of tooth collision and gear impact cannot occur in the whole gear shifting process, and the gear shifting safety and comfort are greatly improved.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. A transmission for a work vehicle, characterized in that: including shell, input shaft, jackshaft, output shaft, the assembly of shifting and drive gear group, the input shaft is located same straight line with the output shaft, jackshaft and output shaft parallel arrangement, among the drive gear group: the output shaft first gear is meshed with the intermediate shaft first gear, the output shaft fifth gear is meshed with the intermediate shaft fifth gear, the output shaft reverse gear is meshed with the intermediate shaft first gear through an idler, a third cone synchronizer is arranged between the output shaft first gear and the output shaft second gear, a first single cone synchronizer is arranged between the output shaft normally-closed gear and the output shaft third gear, and a second single cone synchronizer is arranged between the output shaft fifth gear and the output shaft reverse gear.

2. The work vehicle transmission of claim 1, wherein: the three-cone synchronizer arranged between the first-gear output shaft gear and the second-gear output shaft gear comprises a gear sleeve, a gear hub and two sets of three-cone kits arranged on two sides of the gear hub, wherein the gear hub is installed in the gear sleeve, each three-cone kit comprises an outer ring, a middle ring and an inner ring, the middle ring and the outer ring are sequentially sleeved together, gear cones are arranged on end faces, close to the three-cone synchronizer, of the first-gear output shaft gear and the second-gear output shaft gear, each gear cone comprises a friction portion and a meshing portion, the inner rings are sleeved on the friction portions of the gear cones, and the meshing portions of the gear sleeve and the gear cones are connected.

3. The work vehicle transmission of claim 2, wherein: the meshing modulus of a gear sleeve and the gear cone in the three-cone synchronizer is 1.5, and the number of meshing teeth of the gear sleeve is 63.

4. The work vehicle transmission of claim 3, wherein: the contact surfaces among the outer ring, the middle ring and the inner ring in the three-cone external member are all conical surfaces, and the cone angle of each conical surface is 7.5 degrees.

5. The work vehicle transmission of claim 4, wherein: the width of the gear sleeve is 21.9mm, the depth of a limiting groove of the gear sleeve is 4.15mm, and the stroke of the three-cone synchronizer is 8.4 mm.

6. The work vehicle transmission of claim 5, wherein: the stop angles of two ends of the inner meshing teeth of the gear sleeve are 118 degrees, and the angle of the auxiliary cone is 7-9 degrees.