CN206886502U - A kind of bearing pin for escalator step chain - Google Patents

Abstract

The utility model provides a kind of bearing pin for escalator step chain, including pin body, one end of the pin body axially offers a shoe cream room along bearing pin, at least one lubrication groove is offered on the outer wall of the pin body, connected respectively by a connecting hole between each lubrication groove and shoe cream room, one end that the pin body offers shoe cream room is connected with a lubricating cup.Bearing pin provided by the utility model causes escalator step chain to obtain self-lubricate in motion process, and the sand and dust for avoiding chain surface enter the frictional layer of chain link.

Description

A kind of bearing pin for escalator step chain

Technical field

It the utility model is related to escalator installation field, more particularly to a kind of bearing pin for escalator step chain.

Background technology

The step chains of escalator when in use, can occur between the part such as carrier bar, bearing pin, sleeve, roller friction, it is necessary to Addition lubricating oil is lubricated.Lubricating oil is usually dropped in step chains outer surface by existing step chains when adding lubricating oil, Then lubricating oil penetrates into frictional layer formation oil film by the gap of carrier bar, sleeve, bearing pin, roller.However, this way can handle The sand and dust on chain surface are brought into frictional layer, and gradually accumulate, and then aggravate the abrasion of step chains, and that shortens step chains uses the longevity Life.

It can be seen that prior art could be improved and improve.

Utility model content

In view of in place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of step of escalator Chain, it is intended to make lubricating oil add after from interior past exosmosis, avoid the sand and dust engaging friction layer on chain surface, extend making for step chains Use the life-span.

In order to achieve the above object, the utility model takes following technical scheme：

A kind of bearing pin for escalator step chain, including pin body, one end of the pin body is along bearing pin axle To a shoe cream room is offered, at least one lubrication groove, each lubrication groove and oil storage are offered on the outer wall of the pin body Connected respectively by a connecting hole between chamber, one end that the pin body offers shoe cream room is connected with a lubricating cup.

In the described bearing pin for escalator step chain, the lubrication groove is along axially extending recessed of the bearing pin Mouthful, the connecting hole connects the bottom surface of the recess.

In the described bearing pin for escalator step chain, the recess is perpendicular to the cross section of the bearing pin axis It is upper arched.

In the described bearing pin for escalator step chain, length of the recess on bearing pin axial direction is arranged with being used for It is suitable in the length of the roller on the bearing pin.

In the described bearing pin for escalator step chain, the shoe cream room is perpendicular to the transversal of the bearing pin axis It is rounded on face.

In the described bearing pin for escalator step chain, the depth of the shoe cream room exceedes the pin body length Half.

In the described bearing pin for escalator step chain, the recess include using bearing pin axis for symmetrically axisymmetrically Two recesses set.

In the described bearing pin for escalator step chain, connecting hole is extends radially through corresponding to described two recesses State the through hole of pin body.

In the described bearing pin for escalator step chain, the lubricating cup is through type forced filling oil cup, the lubricating cup and pin One end that shaft body offers shoe cream room is connected through a screw thread.

Beneficial effect：

The utility model provides a kind of bearing pin for escalator step chain, and lubricating grease is injected into oil storage by lubricating cup Lubrication groove is penetrated into from connecting hole, then penetrate into each frictional layers of step chains from lubrication groove so as to realize the mesh of lubrication after chamber , while the sand and dust engaging friction layer on chain surface is avoided, extend the service life of step chains.

Brief description of the drawings

Fig. 1 is the pin shaft structure schematic diagram provided by the utility model for escalator step chain.

Fig. 2 is that the structure that the bearing pin provided by the utility model for escalator step chain is assemblied in link units is shown It is intended to.

Fig. 3 is sectional view of the pin body along line A-A in Fig. 1.

Embodiment

The utility model provides a kind of bearing pin for escalator step chain, to make the purpose of this utility model, technology Scheme and effect are clearer, clear and definite, and the utility model is further described the embodiment that develops simultaneously referring to the drawings.Should Understand, specific embodiment described herein only to explain the utility model, is not used to limit the utility model.

Fig. 1, Fig. 2 and Fig. 3 are referred to, the utility model provides a kind of bearing pin for escalator step chain.

The bearing pin for escalator step chain, including pin body 10, one end of the pin body is along bearing pin A shoe cream room 110 axially is offered, at least one lubrication groove 120, each lubrication are offered on the outer wall of the pin body Connected respectively by a connecting hole 130 between groove 120 and shoe cream room 110, the pin body offers one end of shoe cream room It is connected with a lubricating cup 140.To avoid repeating, a lubrication groove 120 and one are only schematically drawn in Fig. 1, Fig. 2 and Fig. 3 Connecting hole 130.

Specifically, lubricating grease is injected into shoe cream room by lubricating cup, lubricating grease enters lubrication groove by connecting hole.It is described In the process of running, the lubricating grease in lubrication groove further penetrates into each frictional layer of step chains to step chains, so as to realize pair The lubrication of step chains, avoid the sand and dust engaging friction layer on chain surface.Lubrication groove is set to make profit on bearing pin excircle The easier engaging friction layer of consistent lubricant, while savings effect is also played to lubricating grease, make lubricating grease will not be easily from frictional layer It is lost in.Preferably, the mobility of the lubricating grease used is weaker and not volatile, and a greasing can meet that step chains run 4- 6 months.

In the described bearing pin for escalator step chain, the lubrication groove is along the axially extending recess of the bearing pin 120, the connecting hole 130 connects the bottom surface 121 of the recess 120.

Referring to Fig. 3, as a preferred embodiment, the recess 120 is being in bow on the cross section of the bearing pin axis Shape.Arch recess not only simple processing, while the pin body torsional strength caused by opening up the recess loses also very little, therefore It ensure that step chains have good lubrication and operational reliability simultaneously.

Fig. 2 is the structural representation that the bearing pin is assemblied in the link units of step chains, as seen from Figure 2, bearing pin Body 10 is installed on inner plate 40 and outer plate 50, and a sleeve 20 is arranged with pin body 10, the outer surface of sleeve 20 On be arranged with a roller 30.As a preferred embodiment, length of the recess 120 on bearing pin axial direction is suitable with the length of sleeve 20, The contact surface of lubricating grease and sleeve 20 in recess is improved, further increases lubricant effect.

Preferably, the described bearing pin for escalator step chain, the shoe cream room is perpendicular to the bearing pin axis Cross section on it is rounded.The circular shoe cream room processing is simple, and production cost is low.

The described bearing pin for escalator step chain, the depth of the shoe cream room exceed the pin body length Half, so as to add the capacity of shoe cream room so that step chains run time is longer after greasing.

Further, the recess includes two recesses being symmetrically arranged using bearing pin axis as symmetry axis, two recesses Connected respectively by a connecting hole with shoe cream room（Fig. 1 only draws a recess and a connecting hole into Fig. 3）, ensureing to sell On the premise of shaft body has enough torsional strengths, the contact surface of lubricating grease and sleeve 20 in recess is further increased.

Further, connecting hole corresponding to described two recesses is the through hole for extending radially through the pin body.That is, the company The bottom surface 121 that hole is opened in a recess 120 is connect, extends radially through the bottom surface that pin body is communicated to another recess, the connection Hole is mutually passed through with circular shoe cream room, and equivalent to two connecting holes respectively connect two recesses with shoe cream room.Due to the connecting hole only Need processing once can just obtain, therefore reduce production process, production cost is low.

Preferably, the lubricating cup is through type forced filling oil cup, and one end that the lubricating cup offers shoe cream room with pin body leads to Cross threaded connection.Due to that using being threadedly coupled, can be individually replaced when lubricating cup damages, maintenance cost is reduced.

Further, an annular groove has circumferentially been opened up on the outer wall of the pin body upper and lower ends respectively, such as Shown in Fig. 1, the annular groove is used for clamping back-up ring 90 so that the bearing pin is positioned vertically.

In summary, the utility model provides a kind of bearing pin for escalator step chain, on the body of the bearing pin Offering shoe cream room and lubrication groove, lubricating grease is injected into after shoe cream room from connecting hole by lubricating cup and penetrates into lubrication groove, then from profit Chute penetrates into each frictional layer of step chains, avoids the sand and dust engaging friction layer on chain surface, extends making for step chains Use the life-span；Also, by lubrication groove being arranged to the shape of cross section archwise, bearing pin is antitorque strong while making simple processing Degree loss is smaller；By the way that shoe cream room is arranged to circular hole simple production process, production cost is reduced.

It is understood that for those of ordinary skills, can according to the technical solution of the utility model and The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement should all belong to appended by the utility model Scope of the claims.

Claims (9)

1. a kind of bearing pin for escalator step chain, including pin body, one end of the pin body is axial along bearing pin Offer a shoe cream room, it is characterised in that at least one lubrication groove, each lubrication are offered on the outer wall of the pin body Connected respectively by a connecting hole between groove and shoe cream room, one end that the pin body offers shoe cream room is connected with one Lubricating cup.

2. the bearing pin according to claim 1 for escalator step chain, it is characterised in that the lubrication groove is along institute The axially extending recess of bearing pin is stated, the connecting hole connects the bottom surface of the recess.

3. the bearing pin according to claim 2 for escalator step chain, it is characterised in that the recess perpendicular to It is arched on the cross section of the bearing pin axis.

4. the bearing pin according to claim 3 for escalator step chain, it is characterised in that the recess is in bearing pin axle Upward length is suitable with the length of the sleeve for being sheathed on the bearing pin.

5. the bearing pin for escalator step chain according to claim 1 or 4, it is characterised in that the shoe cream room exists It is rounded on the cross section of the bearing pin axis.

6. the bearing pin according to claim 5 for escalator step chain, it is characterised in that the depth of the shoe cream room More than the half of the pin body length.

7. the bearing pin according to claim 2 for escalator step chain, it is characterised in that the recess is included with pin Axle axis is two recesses that symmetry axis is symmetrically arranged.

8. the bearing pin according to claim 7 for escalator step chain, it is characterised in that described two recesses are corresponding Connecting hole be the through hole for extending radially through the pin body.

9. according to the bearing pin for escalator step chain described in claim any one of 1-4, it is characterised in that the lubricating cup For through type forced filling oil cup, one end that the lubricating cup offers shoe cream room with pin body is connected through a screw thread.