CN206439308U

CN206439308U - A kind of hay mover labyrinth sealing

Info

Publication number: CN206439308U
Application number: CN201720070702.6U
Authority: CN
Inventors: 丁子仪
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-01-20
Filing date: 2017-01-20
Publication date: 2017-08-25
Anticipated expiration: 2027-01-20

Abstract

The utility model discloses a kind of hay mover labyrinth sealing, the front side of its sleeve passes through gland before the fixed bearing block of trip bolt, gland has the preceding bulge loop that can be stretched into sleeve cavity before described bearing block, supports setting the second O-ring seal between the end face of preceding bulge loop and the end face of backbone sealing ring；The front end of gland also opens up groove before described bearing block, labyrinth seal is embedded in groove, described labyrinth seal has the three roads rotating ring tooth concentric with described long roller, correspondingly the groove bottom land of gland has the stationary ring tooth that twice coordinate with rotating ring tooth before described bearing block, there is radial clearance and circular gap between rotating ring tooth and stationary ring tooth, the first O-ring seal installed and abutted with described long roller peripheral surface in one of annular groove, annular groove is opened up on the inner ring surface of described labyrinth seal.Compared with prior art, the utility model makes careless foam cannot be introduced into bearing block body.

Description

A kind of hay mover labyrinth sealing

Technical field

The utility model is related to graden machine technical field, and in particular to a kind of hay mover labyrinth sealing.

Background technology

Shoulder carrying mower is to be delivered to the power of tiny engine on moving head by a long roller, the height of moving head When speed is rotated, nylon rope is stretched out outside moving head, so that weeds be cut off.Bearing block at current moving head, uses skeleton Oil seal sealing ring carrys out sealed bearings, and because careless foam splashes at moving head, careless foam is easily entered is rotated into axle with major axis Inside bearing, obstruction is caused to bearing and bearing block, causes frictional force to increase, equipment is run burden, or even cause length Roller is stalled, and is not only increased the use cost of equipment, is also greatly reduced operation and the service life of equipment.

The content of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art there is provided a kind of hay mover labyrinth sealing, adopted The technical scheme taken is：

A kind of hay mover labyrinth sealing, including sleeve, the outer shroud of a cylinder self-aligning roller bearing are embedded in sleeve sky Intracavitary, its inner ring be fixedly mounted on long roller and with the long roller synchronous axial system, in sleeve cavity, cylinder self-aligning roller bearing Front side is supported and sets backbone sealing ring, the fixed moving head in end of long roller, it is characterised in that：The front side of sleeve is fixed by trip bolt Gland has the preceding bulge loop that can be stretched into sleeve cavity, the end face and bone of preceding bulge loop before gland before bearing block, described bearing block Supported between the end face of frame sealing ring and set the second O-ring seal；The front end of gland is also opened up in groove, groove before described bearing block Labyrinth seal is embedded, described labyrinth seal has the three roads rotating ring tooth concentric with described long roller, correspondingly described The groove bottom land of gland has the stationary ring tooth that twice coordinate with rotating ring tooth before bearing block, has radially between rotating ring tooth and stationary ring tooth Opened up on gap and circular gap, the inner ring surface of described labyrinth seal in one of annular groove, annular groove install with it is described The first O-ring seal that long roller peripheral surface is abutted.

Compared with prior art, the utility model is designed by the special labyrinth type of labyrinth seal, careless foam is not entered Enter in bearing block body, and the also secondary barrier effect of backbone sealing ring, in addition bearing block rear pressing cover and bearing block body Also it is sealing structure, so as to protect bearing well, postpones its service life.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation at another visual angle of the utility model.

Fig. 3 is Fig. 2 sectional view.

Fig. 4 is the partial enlarged drawing at Fig. 3 dashed boxes.

Embodiment

As illustrated, a kind of hay mover labyrinth sealing in the present embodiment, including sleeve 10, a cylinder aligning roller The outer shroud of bearing 8 is embedded in the cavity of sleeve 10, its inner ring be fixedly mounted on long roller 20 and with the long roller synchronous axial system, set 10 cavitys of cylinder are interior, cylinder self-aligning roller bearing 8 front side is supported and sets backbone sealing ring 7, the fixed moving head 30 in end of long roller 20, its It is characterised by：The front side of sleeve 10 is by gland 11 before the fixed bearing block of trip bolt, and gland 11 has before described bearing block The preceding bulge loop 111 that can be stretched into the cavity of sleeve 10, supports between the end face of preceding bulge loop 111 and the end face of backbone sealing ring 7 and sets the 2nd O Type sealing ring 6；The front end of gland 11 also opens up and labyrinth seal 5 is embedded in groove, groove before described bearing block, described fan Palace sealing ring 5 has the three roads rotating ring tooth 51 concentric with described long roller 20, correspondingly before described bearing block gland 11 it is recessed Groove bottom land has the stationary ring tooth 112 that twice coordinate with rotating ring tooth 51, has radial clearance and circumference between rotating ring tooth and stationary ring tooth Opened up on gap, the inner ring surface of described labyrinth seal 5 in one of annular groove, annular groove and install circumferential with described long roller 20 The first O-ring seal 4 that surface is abutted.

Among mowing, the careless foam liquid splash of splashing before bearing block to during gland 11, encountering the 3rd O-ring seal 4 Stop because the special mazy design of labyrinth seal 5, makes careless foam can not flow into bearing block body 1, and also bone The secondary barrier effect of frame sealing ring 7, bearing block rear pressing cover 10 is also sealing structure with bearing block body 1 in addition, so that very well Protect bearing, postpone its service life.

Claims

1. a kind of hay mover labyrinth sealing, including sleeve, the outer shroud of a cylinder self-aligning roller bearing are embedded in sleeve cavity It is interior, its inner ring be fixedly mounted on long roller and with the long roller synchronous axial system, in sleeve cavity, before cylinder self-aligning roller bearing Side is supported and sets backbone sealing ring, the fixed moving head in end of long roller, it is characterised in that：The front side of sleeve passes through the fixed axle of trip bolt Gland has the preceding bulge loop that can be stretched into sleeve cavity, the end face and skeleton of preceding bulge loop before gland before bearing, described bearing block Supported between the end face of sealing ring and set the second O-ring seal；The front end of gland also opens up groove before described bearing block, and groove is embedded If labyrinth seal, described labyrinth seal has the three roads rotating ring tooth concentric with described long roller, correspondingly described axle The groove bottom land of gland has the stationary ring tooth that twice coordinate with rotating ring tooth before bearing, between radial direction between rotating ring tooth and stationary ring tooth Open up in one of annular groove, annular groove and install and described length on gap and circular gap, the inner ring surface of described labyrinth seal The first O-ring seal that roller peripheral surface is abutted.