CN201973188U

CN201973188U - Ultra-low speed gearbox for crawler tractor

Info

Publication number: CN201973188U
Application number: CN201120042603XU
Authority: CN
Inventors: 朱学勇; 朱学军; 刘瑛
Original assignee: TIANJIN BISHENG INTELLIGENT TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN BISHENG INTELLIGENT TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2011-02-21
Filing date: 2011-02-21
Publication date: 2011-09-14
Anticipated expiration: 2021-02-21

Abstract

The utility model relates to an ultra-low speed gearbox for a crawler tractor, which comprises a motive power input shaft and a four-six-gear shaft, wherein a middle gear and a transmission gear are respectively, coaxially and fixedly arranged on the four-six-gear shaft, the middle gear is engaged and connected with an input gear of the motive power input shaft, a slide gear-shifting gear arranged on the four-six-gear shaft is integrally formed by a driving gear and a driven gear and is coaxially and glidingly arranged on the four-six-gear shaft through a sliding bearing, a sub gearbox is fixedly arranged at the lower part of the gearbox, a speed reducing shaft which is parallel to the four-six-gear shaft and is arranged in the same direction as the four-six-gear shaft is arranged in the sub gear-box, and a speed reducing driven gear and a speed reducing driving gear are fixedly arranged on the speed reducing shaft. The ultra-low speed gearbox has the advantages that the integral structure is simple, the transmission design is scientific and reasonable, the mechanical operation is reliable, the operation range, the operation efficiency and the operation quality of the crawler tractor are effectively improved, the energy source consumption is reduced, an ultra-low speed function of the crawler tractor is realized, the development and the progress of agricultural machinery are greatly promoted, and the labor and the materials are effectively saved.

Description

A kind of crawler tractor Ultra-Low Speed gearbox

Technical field

The utility model belongs to agricultural mechanical field, especially a kind of crawler tractor Ultra-Low Speed gearbox.

Background technique

Progress and polytechnic development along with expanding economy, society, many agricultural operation occasions need the Ultra-Low Speed operation, for example carry out the operations such as trench digging desilting of the stirring of engineering concrete, agricultural, thus, corresponding agricultural machinery and implement also need to have the Ultra-Low Speed operation function, are the indispensable farm machineries of farmland operation and engineer operation.At present, the Ultra-Low Speed gearbox is mainly used in crawler tractor and uses when realizing the Ultra-Low Speed function, and the jogging speed of crawler tractor that traditional gearbox is installed is also more than 1 kilometer/hour, and existing gearbox is difficult to satisfy the needs of actual low speed operation.

By retrieval, find one piece of relevant patent documentation, be a kind of tractor additional low speed gearbox (CN201212546).It is installed on the main-gear box ear end face, comprises gear box casing, input gear shaft, output gear, transmission shaft, duplicate gear, engagement cover and high and low retaining operating mechanism.Engine power is input in the additional low speed gearbox by the input gear shaft, the gearwheel engagement of gear on the input gear shaft and duplicate gear, small gear in the duplicate gear meshes with output gear again, the internal spline of output gear engages with the external splines of engagement cover outer surface, give the small conical gear axle transmission of torque after increasing, realized the low speed output of additional low speed gearbox.Rotate the handle of high and low retaining operating mechanism, the engagement cover is thrown off the internal spline of output gear, engages with the external splines of input gear shaft output terminal, and gearbox is exported at a high speed.This model utility makes the main-gear box gear expand as the 16+8 retaining by the 8+4 retaining under the prerequisite that does not change the main-gear box structure, enlarges tractor speed of travel scope effectively.

Above-mentioned patent documentation and present patent application have more different.

The model utility content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides that a kind of transmission is reasonable in design, service-strong crawler tractor Ultra-Low Speed gearbox.

The purpose of this utility model is achieved through the following technical solutions:

A kind of crawler tractor Ultra-Low Speed gearbox comprises power input shaft and four or six gear shafts, is fixed with the input gear on power input shaft, and slip variable block gear is installed on four or six gear shafts, and power input shaft and four or six gear shafts are the cocurrent and parallel setting, it is characterized in that:

(1) coaxial intermediate gear and the driving gear of being fixed with respectively on four or six gear shafts, intermediate gear is connected with the input gear engagement of power input shaft; The slip variable block gear of being installed on four or six gear shafts is for reaching the disjunctor gear that constitutes from the gear one by master gear, and slip variable block gear is slidingly mounted on four or six gear shafts by sliding bearing is coaxial;

(2) install a speed change odd-side in the gearbox bottom, these speed change odd-side two ends all are equipped with end cap by screw, with four or six gear shaft cocurrent and parallels one deboost axle are installed in the speed change odd-side, are fixed with a deceleration driven gear and a deceleration driving gear on this deboost axle;

(3) the deceleration driven gear in the speed change odd-side is meshed with the driving gear of being installed on four or six gear shafts, and deceleration driving gear is meshed from gear with slip variable block gear.

And described slip variable block gear adopts spur gear or helical gear by master gear and the deceleration driven gear in gear, the speed change odd-side and deceleration driving gear and intermediate gear and driving gear.

Advantage of the present utility model and good effect are:

1, this Ultra-Low Speed gearbox is on the basis of original speed reducer, deboost axle and deceleration driven gear, deceleration driving gear realization deceleration have been increased newly, and the disjunctor sliding gear is implemented in by sliding bearing laterally slides on four or six gear shafts and turn round two kinds of functions, further realize slowing down, finish and after slowing down, pass the rotating speed of gearbox pto transmission back former gearbox again, also transmission of power is returned simultaneously former gearbox, realize the Ultra-Low Speed function.Newly-increased reducing gear is bound up with original speed reducer is organic, does not have increase too big space and cost, and transmission is reasonable in design, use is reliable.

2, this Ultra-Low Speed gearbox changes or reequips four or six gear shafts and respective gears on the original gearbox of tractor basis, install the speed change odd-side additional and can realize the operation of tractor Ultra-Low Speed, effectively having realized the demand of crawler tractor Ultra-Low Speed operation, is a kind of brand-new technology.

3, the utility model overall structure is simple, transmission design science is reasonable, mechanical movement is reliable, job area, operating efficiency and the operation quality of crawler tractor have effectively been improved, reduce energy consumption, realize the Ultra-Low Speed function of crawler tractor, greatly promoted the development and progress of farm machinery, effectively saved the man power and material.

Description of drawings

Fig. 1 is a gearbox drive mechanism schematic representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is further described, but is not limited to the concrete structure that present embodiment is narrated.

A kind of crawler tractor Ultra-Low Speed gearbox, comprise power input shaft 1 and four or six gear shafts 5, on power input shaft, be fixed with input gear 2, slip variable block gear is installed on four or six gear shafts, power input shaft and four or six gear shafts are the cocurrent and parallel setting, this device promptly is installed between power input shaft and the slip variable block gear, and its concrete structure is:

(1) coaxial intermediate gear 3 and the driving gear 4 of being fixed with respectively on four or six gear shafts, intermediate gear is connected with the input gear engagement of power input shaft; The slip variable block gear of being installed on four or six gear shafts is the disjunctor gear, is reached by master gear 12 to constitute from gear 13 one, and master gear adopts engagement system input external impetus, and slip variable block gear is by sliding bearing 11 coaxial being slidingly mounted on four or six gear shafts.

(2) install a speed change odd-side 9 in the gearbox bottom, these speed change odd-side two ends all are equipped with end cap 8 by screw, in the speed change odd-side, one deboost axle 7 is installed, is fixed with a deceleration driven gear 6 and a deceleration driving gear 10 on this deboost axle with four or six gear shaft cocurrent and parallels.

(4) the related slip variable block gear of present embodiment all can adopt spur gear or helical gear by master gear and the deceleration driven gear in gear, the speed change odd-side and deceleration driving gear and intermediate gear and driving gear.

In the present embodiment, the just drive part that accompanying drawing shows, gearbox and input power section, outputting power partly are prior art, not diagram.

Working principle of the present utility model is:

When not needing the Ultra-Low Speed operation, not not meshing of slip variable block gear with deceleration driving gear from gear, the input gear engagement intermediate gear of power input shaft, intermediate gear turns round with four or six gear shafts with driving gear, and the driving gear engagement drives the idle running of deceleration driven gear; When the needs Ultra-Low Speed moves, the gear of going into by the handle of putting into gear is operated, slip variable block gear is slided and with the deceleration driving gear from gear engagement speed change odd-side of slip variable block gear on four or six gear shafts, this deceleration driving gear is by driving the driving gear rotation that the deceleration driven gear meshes four or six gear shafts, the driving gear and the intermediate gear that can drive on four or six gear shafts slowly run, intermediate gear engagement input gear realizes that Ultra-Low Speed rotates, and passes gearbox again back and realizes the Ultra-Low Speed function.

The size of Ultra-Low Speed transmission speed depends on from the velocity ratio of gear and deceleration master gear, can set as required.

Claims

1. a crawler tractor Ultra-Low Speed gearbox comprises power input shaft and four or six gear shafts, is fixed with the input gear on power input shaft, and slip variable block gear is installed on four or six gear shafts, and power input shaft and four or six gear shafts are the cocurrent and parallel setting, it is characterized in that:

2. crawler tractor Ultra-Low Speed gearbox according to claim 1 is characterized in that: described slip variable block gear adopts spur gear or helical gear by master gear and the deceleration driven gear in gear, the speed change odd-side and deceleration driving gear and intermediate gear and driving gear.