CN2225407Y

CN2225407Y - Active lateral slip wheel group for stepless speed changing mechanism of locomotive

Info

Publication number: CN2225407Y
Application number: CN 95213298
Authority: CN
Inventors: 陆伟铭; 吕明添
Original assignee: Sanyang Industry Co Ltd
Current assignee: Sanyang Industry Co Ltd
Priority date: 1995-05-26
Filing date: 1995-05-26
Publication date: 1996-04-24
Anticipated expiration: 2005-05-26

Abstract

The utility model relates to an active lateral slip wheel group for the stepless speed changing mechanism of a vehicle. The utility model comprises a pulley wheel which is arranged on a driving axle and is formed by a movable half pulley wheel and a fixed half pulley wheel. A rolling body is positioned between the baffle plates of the movable half pulley wheel and the fixed driving axle. Under the action of the centrifugal force, the rolling body can move outwards along the guide passage of the movable half pulley wheel in a radical way. A guide ring member can be arranged on the rolling body in a rotating way to ensure that the rolling body do the rolling movement on the guide passage. All parts of the guide ring member can be made of the self-lubricating material, and the part of the guide ring member can be made of the self-lubricating material.

Description

Locomotive stepless speed changing mechanism master end assembly pulley

The utility model relates to locomotive stepless speed changing mechanism master end assembly pulley, more detailed saying, the utility model provides the roller roller of a kind of locomotive stepless speed changing mechanism master end assembly pulley, it makes rolling movement with respect to driving pulley group associated component, so can reduce the abrasion of roller, increase its durability, thereby promote the accelerating ability of locomotive.

A kind of in the commonly used stepless speed changing mechanism of known locomotive is expandable type assembly pulley by the V-shape belt transmission, and it is wound on winding diameter on the pulley by changing belt, just can produce the transmission agency of stepless change.The representative type driving pulley structure of this kind driven pulley is made of a pair of " half pulley ", and wherein half pulley is to be fixedly mounted on the axle drive shaft, and second half pulley then can move with respect to half fixing pulley on axle vertically.Article one, driving belt is around 2 half pulley rooms and be close on the 2 half pulleys wall in opposite directions, 2 half pulleys in opposite directions between wall the variation of distance just can determine high or low transmission revolution ratio.

Usually, this driving pulley is provided with the rolling body that a tool is regulated the belt position effect, roller (roller) for example, it is made of solid or hollow cylinder and the coating plastic hoop on it, and is placed between removable half pulley and the baffle plate that is fixed on the axle drive shaft.Rotate and under the centrifugal action and cooperation of generation at pulley at baffle plate, roller radially moves outwardly along leading the way of removable half pulley, push removable half pulley and make it and move towards half pulley of fixing, so, just the driving radius (winding radius) of may command belt on pulley, and reach infinite variable speed purpose.

Only carry out sliding motion at baffle plate and removable half pulley room because of roller, thus the abrasion of roller external peripheral surface easily caused, and cause the driver element accelerated deterioration, thus the accelerating ability of locomotive and horsepower also variation.

The purpose of the utility model is to overcome foregoing problems and a kind of stepless speed changing mechanism driving pulley with novel roller roller is provided, its roller can roll on the related elements of driving pulley smooth-goingly, with the abrasion that reduce roller and improve its durability, and then promote the acceleration capability of locomotive.

For achieving the above object, locomotive stepless speed changing mechanism of the present utility model master end assembly pulley, comprise a pair of half pulley that is installed on the axle drive shaft, its first half pulley is fixed on the axle drive shaft, and the second half pulleys can move axially on axle drive shaft with respect to the first half pulleys; One driving belt is between this two and half pulley and touch the relative wall of 2 half pulleys, and this belt determines high and low transmission revolution ratio according to the distance between relative wall; One rolling body is positioned in this movably the second half pulleys and being fixed between the baffle plate on this axle drive shaft, and the two restriction and centnifugal force under can radially move outwardly along this second half leading the way of pulley; Wherein there is a guiding ring to be installed in rotation on this rolling body, the footpath is big than footpath outside this rolling body outside this guiding ring, and the length that should guide ring is short than the length of this rolling body, when this rolling body is mobile between this second half pulley and this baffle plate, this baffle plate only contacts this guiding ring, makes rolling body make rolling movement along this second half leading the way of pulley.

In above-mentioned assembly pulley, leading the way of removable half pulley is provided with a groove to hold the guiding ring, make the guiding ring not with lead the way or groove contacts.

In above-mentioned assembly pulley, rolling body is hollow or solid cylinder, and comprises two steady rings that are placed in guiding ring both sides, and to guide ring little and be set on the rolling body external diameter with press-fit in the footpath outside the steady ring.

In above-mentioned assembly pulley, guiding ring integral body is to be made by self-enrichment material, perhaps guide ring have one deck form by self-enrichment material within wall.

From following detailed description and non-restrictive example and with reference to the accompanying drawings, can more understand the characteristic and the advantage of master end pulley rolling formula roller of the locomotive stepless speed changing mechanism of the utility model.

The brief description of accompanying drawing:

Fig. 1 is the cutaway view of the locomotive stepless speed changing mechanism master end assembly pulley of the utility model;

Fig. 2 is the plan view that removable half pulley is led the way among Fig. 1;

Fig. 3 is the cut-away section block diagram of roller rolling situation on removable half pulley is led the way in the displayed map 1;

Fig. 4 is the exploded drawings of roller of the driving pulley group of the utility model; And

Fig. 5 is the block diagram of another example of guiding ring of the roller of the utility model.

Detailed description of the present utility model:

Fig. 1 shows the locomotive stepless speed changing mechanism master end assembly pulley of the utility model, and it comprises that 12, one on half pulley that is fixed on the axle drive shaft 10 can be along half pulley 13 that moves axially of axle drive shaft 10.Driving belt 11 is between 2 half pulleys 12 and 13.Baffle plate 23 is fixed on the axle drive shaft 10, and with half pulley 13 lead the way 15 in opposite directions.

The roller 40 of the utility model is placed in leading the way between 15 of baffle plate 23 and removable half pulley 13.With reference to figure 3 and 4, roller 40 comprises hollow metal cylinder 42, external diameter than cylinder 42 big but length than the axial midway location that ring 44 is sleeved on cylinder 42 rotationally of guiding of cylinder 42 weak point, other has two external diameters to guide the little identical location of ring 44 to be fixed on two ends of cylinder 42 with ferrule piece 46 with press-fit, uses guiding ring 44 is kept therebetween.Because guiding ring 46 have big outside the footpath, guide unlikely the touching of ring 44 and lead the way 15 or the surface of groove 17 in order to hold guiding ring 44, to make so be provided with a corresponding grooves 17 on 15 leading the way of half pulley 13.

Roller 40 15 radially moves outwardly along leading the way of half pulley 13 under the restriction of centrifugal action and baffle plate 23 and half pulley 13.Design according to the utility model, baffle plate 23 is the bigger guiding ring 44 of contact roller 40 top external diameters only, guarantee that so the ring 46 of roller 40 on can its two end make the rolling movement (see figure 3) on 15 fully leading the way, therefore can reduce

roller

40 and 15 the friction of leading the way, promote the durability of roller 40, thereby improve the acceleration capability of locomotive.

According to the utility model, guiding ring 44 can be by general material, makes as metal etc.The better one, the guiding ring is to form so that self-enrichment material is whole, so when it is installed in rotation on the roller, contact surface between baffle plate and guiding ring and roller and guiding ring need not the additional lubrication agent, the improper abrasion that may cause in the time of can exempting the inconvenience of adding lubricant and prevent as if the lubricant leakage.

Fig. 5 shows the guiding ring 52 of another embodiment of the utility model, and it only has a self-enrichment material layer 54 in inner radial wall, so guides relatively rotating contact surface and can guarantee in the good lubrication situation between ring and roller.

After consulting above-mentioned explanation, those of ordinary skill can be finished the many variations of the utility model example of summarizing announcement herein and various other aspects and substitute.

Claims

1. a locomotive stepless speed changing mechanism master end assembly pulley comprises a pair of half pulley that is installed on the axle drive shaft, and its first half pulley is fixed on the axle drive shaft, and the second half pulleys can move axially on axle drive shaft with respect to the first half pulleys; One driving belt is between this two and half pulley and touch the relative wall of 2 half pulleys, and this belt determines high and low transmission revolution ratio according to the distance between relative wall; One rolling body is positioned in this movably the second half pulleys and being fixed between the baffle plate on this axle drive shaft, and the two restriction and centnifugal force under can radially move outwardly along this second half leading the way of pulley; It is characterized in that having a guiding ring to be installed in rotation on this rolling body, the footpath is big than footpath outside this rolling body outside this guiding ring, and the length that should guide ring is short than the length of this rolling body, when this rolling body is mobile between this second half pulley and this baffle plate, this baffle plate only contacts this guiding ring, makes rolling body make rolling movement along this second half leading the way of pulley.

2. assembly pulley according to claim 1 is characterized in that, these removable the second half leading the way of pulley are provided with a groove to hold this guiding ring, and this is led the way or groove to make the unlikely contact of this guiding ring.

3. assembly pulley according to claim 2, it is characterized in that, this rolling body is hollow or solid cylinder, and comprises two steady rings that are placed in these guiding ring both sides in addition, and the footpath is little and be set on this cylinder with press-fit than this guiding ring outside this steady ring.

4. according to claim 2 or 3 described assembly pulleys, it is characterized in that this guiding ring integral body is to be made of self-enrichment material.

5. according to claim 2 or 3 described assembly pulleys, it is characterized in that wall has a self-enrichment material layer within this guiding ring.