CN2101985U

CN2101985U - Offset dead pulley hanging connection device

Info

Publication number: CN2101985U
Application number: CN 91213082
Authority: CN
Inventors: 唐余圩; 曲国良
Original assignee: Fengfu Agriculture Mechanization Management Service Station Dafeng County Yanc
Current assignee: Fengfu Agriculture Mechanization Management Service Station Dafeng County Yanc
Priority date: 1991-01-18
Filing date: 1991-01-18
Publication date: 1992-04-22

Abstract

The utility model relates to a hanging connection device for an offset dead pulley, comprising a transmission box body 14, an upper transmission shaft 13, a lower transmission shaft 15, a dead pulley 16, a bearing 12, etc. The utility model is characterized in that the upper transmission shaft 13 and the lower transmission shaft 15, the power output shaft of a tractor 6, and the shaft axis of a power input shaft 8 of a rotary cultivator; the upper transmission shaft 13 is provided with the bearing 12 sheathed with the dead pulley 16. The utility model has compact structure and small size; distance between the power output shaft 6 of a walking tractor and the power input shaft 8 of a rotary cultivator is shortened; the rearward amount of the gravity center of the rotary cultivator is reduced; the operation is convenient.

Description

Offset dead pulley hanging connection device

The utility model relates to the tillage implement hanging device that matches with hand tractor in a kind of agricultural mechanical field.

Existing tillage implement (as rotovator) with walking tractor matching be connected on hand tractor articulate position such as Fig. 1, in the drawings, the 1st, hand tractor road wheel, the 2nd, rotovator.In this connected mode, when adopting the anti-skidding crop rotation road wheel of major diameter, owing to be subjected to the restriction of two-wheeled spacing, the rotary tillage fabric width of rotovator is less, can cause rotovator left and right sides housing 3 and two road wheels 1 to collide when increasing the farming fabric width, can't farming.For increasing the farming fabric width of rotovator, improve work efficiency, the method that adopts usually has two kinds at present: a kind of is the rotovator that adopts band left avertence crank throw formula left arm shell holder.Fig. 2 is the schematic diagram of this rotovator when being connected with hand tractor.4 is left avertence crank throw formula left arm shell holder of rotovator among the figure, the 5th, and hand tractor.Though this kind connected mode has enlarged the rotary tillage amplitude, but because the rotovator center line does not overlap with the hand tractor centre symmetry line, during the rotary tillage operation, the left avertence amount is big, and because the cutting force of rotary blade is asymmetric distribution in the both sides of hand tractor center line, cause hand tractor handrail handle operating physical force secundly, difficulty in walking, and the walking linearity is poor.Another kind is to adopt conventional levels gear drive hanging device.Fig. 3 is the structural representation of this device.It is installed between hand tractor power take-off 6 and the tillage implement power input shaft 8.Be made up of the two-stage gear drive, cutter shaft just changes when guaranteeing operation.First order travelling gear 11 is installed on the axle 7, and second level travelling gear (not marking among the figure) is installed on the axle 10, and axle 7 and axle 10 are installed in the transmission case body 9 by two bearings.Owing between rotovator and hand tractor, loaded onto this hanging device, move after making the relative position between rotovator and the hand tractor road wheel.Though can avoid rotovator housing and hand tractor anti-pulley to collide because its volume is bigger, make the rotovator center of gravity after the amount of moving too big, increased the lifting force of hand tractor operation handrail rake, operating difficulties greatly.When carrying out counter-rotating rotary tillage operation, the counter-rotating hanging device that generally adopts also is and Fig. 3 similar device at present.Different is to adopt the one-level gear drive can realize counter-rotating, also exists the shortcoming same with Fig. 3 device.

The purpose of this utility model is a kind of improvement design that proposes at the deficiency of said apparatus.

Technical solution of the present utility model is as follows, elaborates below in conjunction with accompanying drawing:

Fig. 4 is a structural representation of the present utility model when realizing forward rotary tillage operation.14 is transmission case bodies in the drawings, the 13rd, and last power transmission shaft, the 15th, lower drive shaft is equipped with gear on its axle.Bearing 12 is sleeved on the power transmission shaft 13, suit idle pulley 16 on bearing 12, and last power transmission shaft 13 and lower drive shaft 15 are contained in (interference fits) on the transmission case body 14.Deviation distance is 13～25mm on the between centers of hand tractor power take-off 6 and last power transmission shaft 13.Lower drive shaft 15 is biased in the below of rotovator power input shaft 8.When farming, the utility model is installed between the power input shaft 8 of moving output shaft 6 of hand tractor and rotovator, gear driven idle pulley 16 rotations on the hand tractor power take-off 6, the gear that idle pulley 16 drives on the lower drive shaft 15, gear on this gear driven rotovator power input shaft 8 is the rotovator transferring power.Fig. 5 is when realizing counter-rotating rotary tillage operation, structural representation of the present utility model.Because counter-rotating rotary tillage operation need only be provided with on upper offset axle 13 with the idle pulley transmission mechanism of Fig. 4 same structure and can realize.Promptly by 16 rotations of the gear driven idle pulley on the hand tractor power take-off 6, the gear that is driven on the rotovator power input shaft 8 by idle pulley 16 is given the rotovator transferring power again.

Upward power transmission shaft 13 of the present utility model and lower drive shaft 15 adopt with hand tractor power take-off 6 and rotovator line shaft imports 8 upper and lower bias structures, axle 13 is installed on the transmission case body 14 with the interference fits form, the width of the transmission case body 14 of axle 13 both sides is reduced, reduced the volume of this hanging device, shortened the distance between hand tractor power take-off 6 and the rotovator power input shaft 8, the amount of moving greatly reduces after making the center of gravity of rotovator, reduced the hand tractor handrail last lifting force, operated light.Because its compact conformation, consumptive material is few, and cost is low, compares with existing hanging device, and its manufacturing cost reduces about 15%, and the lifting force of hand tractor handrail handle reduces about 30%.

Claims

1, a kind of biasing idle pulley transmission hanging device, form by transmission case body 14, last power transmission shaft 13, lower drive shaft 15, bearing 12, idle pulley 16 etc., it is characterized in that power transmission shaft 13 and lower drive shaft 15 and the axial line of hand tractor power take-off 6 and rotovator power input shaft 8 go to upper and lower bias structure.

2, hanging device according to claim 1 is characterized in that last offset distance between upper offset axle 13 and the tractor motive power output shaft is from being 13～25mm.

3, hanging device according to claim 1 is characterized in that bearing 12 is housed on the bias axis 13, is set with idle pulley 16 on the bearing 12.