CN103527672A

CN103527672A - Pin-roller type overrun clutch with double-groove mutually-clamped one-way positioning pin rollers

Info

Publication number: CN103527672A
Application number: CN201310463814.4A
Authority: CN
Inventors: 李海龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-25
Filing date: 2013-09-25
Publication date: 2014-01-22

Abstract

The invention relates to a pin-roller type overrun clutch with double-groove mutually-clamped one-way positioning pin rollers. The pin-roller type overrun clutch comprises an outer ring, grooves in the outer ring, an inner ring, grooves in the inner ring, the pin rollers, distance rings and one-way positioning devices, wherein the one-way positioning devices and the distance rings are combined together. The pin rollers are positioned through the one-way positioning devices arranged on the distance rings, so that the pin rollers are positioned in the grooves in the inner ring and in the grooves in the outer ring to form the mutually-clamped pin rollers, and therefore the separation and combination of the inner ring and the outer ring are achieved. The pin-roller type overrun clutch is mainly applicable to overrun clutches used for driving a secondary turbine of a loader and non-return devices on all types of mechanical equipment. The pin-roller type overrun clutch is reliable in working and self-locking and easy and convenient to release; besides, the longer the using time is, the larger the transmitting torque is, and the more durable the pin-roller type overrun clutch is.

Description

Double flute is the unidirectional positioning roller roller-type overrunning clutch of card mutually

Technical field

The present invention relates to a kind of free wheel device, be mainly used in the fields such as free wheel device that the transmission of loader two-stage turbine used, the non-return device in various machinery, package packing machine, printing machinery, farm machinery, food processing machinery, various noria, belt conveyor.

Background technique

At present, on conventional free wheel device has, be divided into roller type, wedge block type, ratchet-type, gear type etc.Roller type, wedge block type planet wheel in the course of the work, roller, voussoir, raceway contact plane be all subject to very large extrusion stress, these parts are being used after a period of time, easily there is wearing and tearing and plastic deformation in its surface of contact, thereby cause free wheel device to lose efficacy, damages.Ratchet-type, gear type can not bear very large moment of torsion because of its structural feature.

Summary of the invention

Double flute of the present invention is the object of the unidirectional positioning roller roller-type overrunning clutch of card mutually, the technical problem solving is to the deficiency occurring in prior art, and provide a kind of under the working condition of high speed, low speed, high pulling torque, use a kind of simple in structure durable, non-slip, use free wheel device reliable, that the life-span is long.

The double flute of the present invention mutually unidirectional positioning roller roller-type overrunning clutch of card is specifically comprised of outer ring 1, roller 2, inner ring 3, spacer ring 4, ratchet 5, as shown in Figure 2

On described outer ring 1, be designed with the groove being arranged symmetrically with, the width of groove is the twice of roller 2 diameters or more than twice and the deep mixed sample of the degree of depth of groove, as shown in Figure 2 A, B position.

The corresponding roller of the mutually same groove of quantity of described roller 2 and outer ring upper groove.

On described inner ring 3, be designed with the groove C being arranged symmetrically with, and the groove of the position of groove on outer ring is relative, as shown in Figure 2 C position.

On described spacer ring 4, be designed with the roller barrier groove identical with outer ring upper groove number, on a side inner ring of spacer ring, be designed with the pawl slot D identical with outer ring groove number, as shown in Figure 2 D position.

Described ratchet 5, outside a side of inner ring 3, corresponding obtaining on position is designed with ratchet 5 as shown in Figure 2.

Feature of the present invention is a side and the inner ring groove clamping roller that the groove on outer ring is shallow in the working procedure that free wheel device is engaging, the parts of active rotation utilize groove clamping roller to drive passive parts to rotate, the structure of so mutual card makes to there will not be and skid between inner ring and outer ring, and can transmit very large moment of torsion, and using in the situation that more of a specified duration with the groove of roller-contact, it is tightr in the using process engaging, the moment of torsion of transmission more greatly, more durable in use.

Accompanying drawing explanation

Fig. 1 is the present invention's free wheel device sectional view used while being applied to loader double-stage turbine gearbox.

Fig. 2 is fundamental diagram of the present invention, and the structural drawing of outer ring, outer ring groove, roller, inner ring, inner ring groove, spacer ring, spacer ring pawl slot, ratchet.

Fig. 3 is that figure is combined in the present invention with ball bearing.

Fig. 4 is pawl slot structural drawing on the spacer ring of the present invention while being low speed free wheel device and spacer ring, the key plan of ratchet.

Fig. 5 is pawl slot structural drawing on the spacer ring meter spacer ring of the present invention while being high speed free wheel device, the key plan of ratchet.

Fig. 6 is that the present invention is the spacer ring ratchet structural drawing in when combination.

Fig. 7 is that free wheel device of the present invention engages and mask work principle schematic.

Embodiment

When claimant moves in deep mixed groove according to roller, roller is to change apart from the distance at the center of outer ring, and designs as shown in Figure 2 deep mixed A, B position on outer ring groove and groove.

If claimant according to the concentric inner ring in outer ring on design groove, and inner ring bottom portion of groove is just in time the diameter of ball to the distance of the shallow side of outer ring bottom portion of groove, when roller moves in the outer ring groove as above [0016] described, roller moves to a side that outer ring groove is shallow while moving to again in the groove of inner ring simultaneously, outer ring and inner ring can form unidirectional mutual card, and on inner ring 3, design groove C.

If claimant is according to the pawl slot of designing equal angular on ratchet, and ratchet can make ratchet be parked on the inner ring that ratchet is installed and synchronize and rotate with angle while working in pawl slot.

The working principle of free wheel device of the present invention: as shown in Figure 2, when inner ring 3 is power source master driver, when outer ring 1 is passive driving component, inner ring 3 up times are rotated, ratchet 5 on inner ring 3 drives spacer ring 4 to rotate, roller fence on spacer ring drives roller 2 to rotate, while moving to the position A of shallow place by depth location B in the groove of roller 2 on outer ring 1 simultaneously, roller 2 moves to inner ring groove C along spacer ring roller fence simultaneously, when roller moves to groove A place, outer ring, roller 2 moves to inner ring groove C place equally, now Internal and external cycle forms mutual card, inner ring 3 just can drive 1 running of passive outer ring.When outer ring 1 rotating speed surpasses inner ring 3 rotating speed, under the effect of centrifugal force, along outer ring, 1 groove inclined-plane moves to groove B place, outer ring to roller 2, roller 2 utilizes spacer ring roller fence to drive spacer ring 4 to rotate simultaneously, now ratchet 5 is separated with the pawl slot D on spacer ring, thus the separation that reaches free wheel device with engage.

As shown in Figure 2, when outer ring 1 is power source master driver, when inner ring 3 is passive driving component, 1 inverse time of outer ring rotates, inner ring 3 is motionless, ratchet 5 on inner ring drives spacer ring motionless, and the roller fence on spacer ring drives roller 2 motionless, and rotate outer ring 1, the groove of roller on outer ring moves to A place, position by B place, position, when roller 2 moves to groove A place, outer ring, roller 2 moves to inner ring groove C place equally, and now Internal and external cycle forms mutual card, and outer ring 1 just can drive passive inner ring 3 runnings.When inner ring rotating speed surpasses outer ring rotating speed, roller 2 moves to groove B place, outer ring along groove inclined-plane, outer ring under the effect of centrifugal force, roller 2 utilizes spacer ring roller fence to drive spacer ring 4 to rotate simultaneously, now ratchet 5 is separated with the pawl slot D on spacer ring, thus the separation that reaches free wheel device with engage.

When the present invention is low speed free wheel device, spacer ring, ratchet use as shown in Figure 4 this just can, working principle is as the working principle of bicycle freewheel.

When the present invention is high speed free wheel device, spacer ring, ratchet are used as shown in Figure 5,6 this, ratchet 5 return springs calculate return spring and want compressed pressure surmounting the centrifugal force producing when rotating speed is greater than rated speed according to rated speed, the rocking arm that surmounts rotating speed and ratchet 5, make the rocking arm of ratchet surmount the centrifugal force energy Compress Spring of rotating speed, make the compressed pressure of spring be a bit larger tham the centrifugal force of rated speed lower shake-changing arm generation and be less than the centrifugal force that surmounts the generation of rotating speed rocking arm.Working principle: as shown in Figure 5, outer ring is that master driver inner ring is while being transmission part, free wheel device turns round under rated speed, rocking arm ratchet is worked in spacer ring pawl slot, Internal and external cycle, roller blocks mutually, when inner ring rotating speed surpasses outer ring rated speed, roller 2 is under the effect of centrifugal force, along groove inclined-plane, outer ring, move to groove B place, outer ring, roller 2 utilizes spacer ring roller fence to drive spacer ring 4 to rotate simultaneously, now ratchet 5 is separated with the pawl slot D on spacer ring, inner ring rotating speed continues to strengthen, rocking arm ratchet centrifugal force strengthens, rocking arm reversion Compress Spring, rocking arm ratchet departs from the pawl slot on spacer ring, inner ring is turned round surmounting under rotating speed, inner ring is separated with outer ring, the contactless lower running of spacer ring and ratchet,

The present invention is owing to adopting double flute to block mutually roller, and make Internal and external cycle in joint, can not have skidding, and transmit very large moment of torsion, in actual using process, when free wheel device Internal and external cycle mask work, Internal and external cycle speed discrepancy can be very not large, and the time of combination want score from time long a lot, so adopt wear-resisting, impact-resistant steel to make spacer ring and ratchet, will make this free wheel device durable in use, unidirectional self-lock is reliable, oppositely frees light.

It is wide that the present invention is applicable to mechanical range, the fields such as the free wheel device that the transmission of loader two-stage turbine is used, the non-return device in various machinery, package packing machine, printing machinery, farm machinery, food processing machinery, various noria, belt conveyor.

Claims

1. a roller-type overrunning clutch, include outer ring, inner ring, roller, spacer ring, on described outer ring, be evenly equipped with the groove identical with roller quantity, on inner ring, be evenly equipped with the groove identical with roller quantity, on spacer ring, be furnished with the fence identical with roller quantity, between spacer ring and inner ring, one-way positioning device is installed, it is characterized in that: described outer ring groove, inner ring groove are mutually corresponding, roller can swing in a groove therein, spacer ring is between inner ring and outer ring, and spacer ring can one-way rotation with respect to inner ring.

2. outer ring groove and inner ring groove according to claim 1, it is characterized in that: one of them is for adding wide groove, another is narrow groove, the width that adds wide groove is not less than the twice of roller diameter, add the wide groove depth different, when roller swings in wide groove, roller can change to the distance at Internal and external cycle center, roller is when a dark side, roller is greater than the radius of inner ring to the distance at Internal and external cycle center, roller with inner ring without any contacting, roller is when a shallow side, roller is less than the radius of inner ring to the distance at Internal and external cycle center, roller can stick in inner ring groove.

3. spacer ring, inner ring and positioning device according to claim 1, it is characterized in that: spacer ring can equidirectionally rotate with respect to inner ring, spacer ring is during with respect to inner ring reverse rotation, positioning device stops spacer ring to rotate, spacer ring is state of rest with respect to inner ring, and on spacer ring, roller fence hole site aligns the groove on inner ring simultaneously.