CN206219024U

CN206219024U - Step chains

Info

Publication number: CN206219024U
Application number: CN201621269764.1U
Authority: CN
Inventors: 潘振华
Original assignee: Suzhou Juren Power Chain Co Ltd
Current assignee: Suzhou Juren Power Chain Co Ltd
Priority date: 2016-11-24
Filing date: 2016-11-24
Publication date: 2017-06-06
Anticipated expiration: 2026-11-24

Abstract

The utility model discloses a kind of step chains, including chain rivet, it is socketed in the bearing on chain rivet circumferential side wall, sealing along chain rivet axial direction both sides is separately positioned on bearing, the inner ring of bearing is provided through oil guiding hole, one of end wall of the chain rivet is provided with the oil filler point communicated with oil guiding hole, its drip irrigation device is when needing to add grease in bearing, need not be by outer plate, inner plate is disassembled from chain rivet, and sealing is disassembled from bearing, grease need to only be injected by the oil filler point on chain rivet in oil guiding hole, until in the gap that grease is injected between inner ring and outer ring, so as to realize being easy to the effect to grease is injected in bearing.

Description

Step chains

Technical field

The utility model is related to chain technical field, more specifically, it relates to a kind of step chains.

Background technology

Step chains are the chains of the step transmission for escalator, by the transmission of step chains, so that escalator Constantly tilt upward or move down.

The Chinese patent of existing Publication No. CN203006684U provides a kind of stepchain roller of outdoor escalator, It is socketed with a bearing on the circumferential side wall of chain rivet, and the outer ring of bearing is provided with the step wheels for rolling, chain in every group Plate, outer plate are socketed on adjacent chain rivet, and are located at both sides of the corresponding bearing along chain rivet axial direction respectively, then in bearing Oversheath is respectively arranged with along the both sides of chain rivet axial direction, so as to gap between the inner ring of bearing and outer ring be blocked, to reduce axle Hold the loss or volatilization of interior grease.

Step chains during actual use, because bearing bears larger gravity, and constantly rotate, it is necessary to through Grease is often added at the steel ball between the inner ring of bearing and outer ring, but, bearing is used to add at grease but by oversheath Closure, and oversheath is along chain rivet axial direction and by inner plate and outer plate barrier, if necessary between the inner ring of bearing and outer ring Grease is added, it is necessary to first disassemble outer plate, inner plate from chain rivet, then oversheath is disassembled, could be right Bearing adds grease, in the process, it is necessary to substantial amounts of dismantlement work, and wastes substantial amounts of personnel's labour cost.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide one kind to be easy to addition oil in bearing The step chains of fat.

To achieve the above object, the utility model provides following technical scheme：

A kind of step chains, including chain rivet, be socketed on chain rivet circumferential side wall bearing, be separately positioned on bearing along chain rivet The sealing of axial both sides, the inner ring of bearing is provided through oil guiding hole, and one of end wall of the chain rivet is provided with and leads The oil filler point that oilhole is communicated.

By using above-mentioned technical proposal, when needing to add grease in bearing, it is not necessary to by outer plate, interior chain Plate is disassembled from chain rivet, and sealing is disassembled from bearing, only need to by grease by the oil filler point on chain rivet to Injection in oil guiding hole, until in the gap that grease is injected between inner ring and outer ring, so as to realize being easy to injection oil in bearing The effect of fat.

Further, there is the chain rivet end wall of oil filler point to be provided with the closure for blocking oil filler point.

By using above-mentioned technical proposal, closure is used to block oil filler point, so that reduce grease volatilized from oil filler point, Reduce the waste of grease；On the other hand, dust can be reduced to enter in bearing from oil filler point, inner ring is kept good with outer ring Lubricity.

Further, the closure is threadedly coupled with oil filler point madial wall.

By using above-mentioned technical proposal, the mode simple structure of threaded connection, it is easy to which operating personnel are by sealing part of oil injection hole.

Further, the end wall of the side of the closure and chain rivet is rotated and be connected, the closure and chain axial end wall it Between be provided with elastic reaction so that the torsion elastic component that is pushed against on chain axial end wall of closure.

By using above-mentioned technical proposal, when injection grease is needed, operating personnel can direct rotary seal lid so that Oil filler point is opened, after grease is injected, closure is directly unclamped, closure is in the presence of torsion elastic component, so as to rotate simultaneously It is pushed against on the end wall of chain rivet, to realize the automatic effect by sealing part of oil injection hole, on the other hand, with the mode phase being threadedly coupled Than the more difficult loss of closure, so as to reduce be changed to closure.

Further, the circumferential side wall of the chain rivet is fixedly installed two and is located at bearing respectively along chain rivet axial direction both sides With the centring ring for preventing bearing from being moved axially along chain rivet.

By using above-mentioned technical proposal, to prevent bearing from being moved axially along chain rivet, during step Chain conveyer, ladder Level chain is more stablized.

Further, covered successively respectively also including being arranged on chain rivet circumferential side wall and from centring ring to chain rivet axial direction two ends Inner plate, the outer plate for connecing, each described centring ring towards corresponding inner plate side roll be provided with several with it is interior The ball that carrier bar offsets.

By using above-mentioned technical proposal, during the rotation of inner plate relative positioning circle, the cunning of inner plate and centring ring Dynamic friction is changed into rolling friction, and the abrasion of inner plate and centring ring, effectively extension inner plate and positioning are reduced so as to greatly reduce The service life of circle.

Further, the inner plate is provided with the bulge loop coaxial with chain rivet, the outer plate towards the side of outer plate Side be provided with scrobicular ring with bulge loop male-female.

It is convex so as to inner plate, outer plate be acted on to a shearing force part for chain rivet by using above-mentioned technical proposal On ring, the madial wall of scrobicular ring, so as to greatly reduce the shear action of inner plate, outer plate to chain rivet, extend the use longevity of chain rivet Life, on the other hand, during long-term transmission, inner plate, outer plate are socketed in through hole madial wall and chain on chain rivet respectively Axle constantly weares and teares, and the clear size of opening being socketed in respectively on chain rivet so as to be easily caused inner plate, outer plate becomes big, adjacent interior chain Entire length size between plate, outer plate can be elongated, causes whole piece step chains constantly elongated, it will influence step chains Transmission accuracy, by the setting of bulge loop and scrobicular ring, during inner plate and outer plate are rotated centered on chain rivet, bulge loop Rotated in scrobicular ring, even if the aperture that inner plate, outer plate are socketed in the through hole on chain rivet becomes big, and bulge loop and scrobicular ring madial wall Rotation connection, still be able to ensure entire length size between inner plate and outer plate, so as to realize improving step Chain conveyer essence The effect of degree.

Further, the lateral wall of the bulge loop is provided with oil storage grooves.

By using above-mentioned technical proposal, grease can be placed in oil storage grooves so that the madial wall of bulge loop and scrobicular ring and When lubricated.

Further, the sealing ring coaxial with chain rivet is provided between the inner plate and outer plate, the sealing ring With diameter greater than the diameter of bulge loop.

By using above-mentioned technical proposal, sealing ring is located at the outside of bulge loop radial direction, with reduce grease from inner plate with it is outer Gap between carrier bar is lost in the direction away from chain rivet.

Further, the air pressure cavity for keeping sealing ring elastic force is provided with the sealing ring.

By using above-mentioned technical proposal, the atmospheric pressure in air pressure cavity is more than extraneous atmospheric pressure, air pressure cavity Interior atmospheric pressure force sealing ring be in expansion state, can further between sufficiently sealed outer plate and inner plate between Gap.

In sum, the utility model has the advantages that：

1st, by the setting of oil filler point on the oil guiding hole on the bearing inner race and chain rivet, can be directly by oil filler point to inner ring Grease is injected in gap between outer ring, the effect being easy to grease is injected in bearing is reached；

2nd, by the setting of closure, grease can be reduced and is volatilized from the opening of oil filler point, and dust can also be reduced The effect of entrance；

3rd, the setting being connected, and torsion elastic component between closure and chain rivet are rotated by closure and chain axial end wall Set, after grease is injected, closure is automatically rotated in the presence of torsion elastic component to the direction of oil filler point, and through note Oilhole is sealed, to prevent operating personnel from forgetting the effect of sealing part of oil injection hole.

Brief description of the drawings

Fig. 1 is the structural representation of embodiment one；

Fig. 2 is embodiment one along chain rivet axle center generalized section；

Fig. 3 is the enlarged drawing of part A in Fig. 2；

Fig. 4 is the structural representation of embodiment two；

Fig. 5 is the enlarged drawing of part B in Fig. 4.

In figure：1st, chain rivet；11st, oil filler point；12nd, centring ring；121st, ball；2nd, bearing；21st, inner ring；211st, oil guiding hole； 22nd, steel ball；23rd, outer ring；231st, step roller；3rd, sealing；4th, closure；41st, torsion elastic component；5th, inner plate；51st, it is convex Ring；52nd, oil storage grooves；6th, outer plate；61st, scrobicular ring；7th, sealing ring；71st, air pressure cavity.

Specific embodiment

Below in conjunction with the accompanying drawings and embodiment, the utility model is described in detail.

Embodiment one：

A kind of step chains, referring to Figures 1 and 2, it includes chain rivet 1, the bearing 2 being socketed on the circumferential side wall of chain rivet 1, bearing 2 include inner ring 21, outer ring 23, the steel ball 22 between inner ring 21 and outer ring 23, and step roller 231 is provided with outer ring 23, Sealing 3 is respectively arranged with along the both sides of the axial direction of chain rivet 1 on bearing 2, sealing 3 is used to block between inner ring 21 and outer ring 23 Gap, to reduce the loss and volatilization of grease, sealing 3 can be made up of rubber or ferrous materials are made.

Reference picture 2, inner ring 21 is provided through oil guiding hole 211, and one of end wall of chain rivet 1 is provided with oil filler point 11, Oil filler point 11 is communicated with oil guiding hole 211, when needing to addition grease in bearing 2, grease is filled with oil filler point 11, if oily Fat is excessively sticky, can by way of air pressure by it is grease-filled enter oil filler point 11 in, grease along oil filler point 11, oil guiding hole 211, Until the gap location entered between inner ring 21 and outer ring 23；When step chains are during use, outer ring 23 is with respect to 21 turns of inner ring Dynamic, steel ball 22 is rolled in the gap between inner ring 21 and outer ring 23, so that between grease is between inner ring 21 and outer ring 23 It is uniformly distributed in gap, realization is easy to the effect that grease is added in bearing 2.

There is reference picture 2, chain rivet 1 end wall of oil filler point 11 to be provided with closure 4, and closure 4 is used to block oiling Hole 11, so as to reduce grease be volatilized from oil filler point 11, on the other hand, can reduce dust and enter in bearing 2 from oil filler point 11, Inner ring 21 is set to keep good lubricity with outer ring 23, closure 4 is threadedly coupled with the madial wall of oil filler point 11, when oiling, will Closure 4 is screwed out, in order to injecting grease in oil filler point 11；After injection grease, closure 4 is tightened on oil filler point 11 in time On madial wall, so as to oil filler point 11 be blocked.

Reference picture 2 and Fig. 3, the circumferential side wall of chain rivet 1 are fixedly installed two centring rings 12, and two centring rings 12 are distinguished Positioned at bearing 2 along the axial both sides of chain rivet 1, centring ring 12 can by with the interference fit of chain rivet 1, to be fixed on chain rivet 1, to prevent Bearing 2 is moved axially along chain rivet 1, and during step Chain conveyer, step chains are more stablized.

Reference picture 2 and Fig. 3, are socketed successively respectively on the circumferential side wall of chain rivet 1 and from centring ring 12 to the axial two ends of chain rivet 1 There are inner plate 5, outer plate 6, each centring ring 12 is provided with several dome shapes towards the side of corresponding inner plate 5 Groove, rolls the ball 121 for being provided with and being offseted with inner plate 5, so as to relatively fixed in inner plate 5 in the groove of each dome shape During position circle 12 is rotated, reduce the abrasion of inner plate 5 and centring ring 12, effectively extension inner plate 5 and centring ring 12 makes Use the life-span.

Reference picture 2 and Fig. 3, inner plate 5 are provided with the bulge loop 51 coaxial with chain rivet 1, outer plate towards the side of outer plate 6 6 side is provided with the scrobicular ring 61 coaxial with chain rivet 1, bulge loop 51 and the male-female of scrobicular ring 61, because step chains are in the mistake for using Cheng Zhong, inner plate 5 bears opposite effect power with outer plate 6, so that inner plate 5 plays shearing with outer plate 6 to chain rivet 1 Effect, by bulge loop 51 and the male-female of scrobicular ring 61, so as to inner plate 5, outer plate 6 is a part of to the shearing force of chain rivet 1 Act on bulge loop 51, the madial wall of scrobicular ring 61, so as to greatly reduce the shear action of inner plate 5, outer plate 6 to chain rivet 1.

On the other hand, during long-term transmission, inner plate 5, outer plate 6 are socketed in the through hole on chain rivet 1 respectively Side wall constantly weares and teares with chain rivet 1, and the clear size of opening being socketed in respectively on chain rivet 1 so as to be easily caused inner plate 5, outer plate 6 becomes Greatly, the entire length size between adjacent inner plate 5, outer plate 6 can be elongated, causes whole piece step chains constantly elongated, will The transmission accuracy of step chains can be influenceed, by the setting of bulge loop 51 and scrobicular ring 61, in inner plate 5 and outer plate 6 are with chain rivet 1 During the heart is rotated, bulge loop 51 is also rotated in scrobicular ring 61, even if inner plate 5, outer plate 6 are socketed in the through hole on chain rivet 1 Aperture become big, and bulge loop 51 is connected with the rotation of the madial wall of scrobicular ring 61, still is able to whole between guarantee inner plate 5 and outer plate 6 Body length size, so as to realize improving the effect of step chains transmission accuracy.

Reference picture 3, the lateral wall of bulge loop 51 is provided with for placing grease in oil storage grooves 52, oil storage grooves 52, so that Bulge loop 51 is lubricated in time with the madial wall of scrobicular ring 61.

Reference picture 2 and Fig. 3, are provided with the sealing ring 7 coaxial with chain rivet 1, and sealing ring 7 between inner plate 5 and outer plate 6 The diameter with diameter greater than bulge loop 51, i.e., sealing ring 7 be located at the radial direction of bulge loop 51 outside, with reduce grease from inner plate 5 with it is outer Gap between carrier bar 6 is lost in the direction away from chain rivet 1.

Sealing ring 7 is made up of elastomeric material, and air pressure cavity 71, the air in air pressure cavity 71 are provided with sealing ring 7 More than extraneous atmospheric pressure, the atmospheric pressure in air pressure cavity 71 forces sealing ring 7 to be in the state of expansion to pressure, can enter one Walk the gap between sufficiently sealed outer plate 6 and inner plate 5.

Operation principle is as follows：Reference picture 2, during the regular maintenance of step chains, it is not necessary to by outer plate 6, interior chain Plate 5 is disassembled from chain rivet 1, and sealing 3 is disassembled from bearing 2, it is only necessary to by closure 4 from oil filler point 11 Screw out, then inject grease in oil guiding hole 211 by oil filler point 11, until grease is injected between inner ring 21 and outer ring 23 Gap in, inject grease work after the completion of, closure 4 is tightened on the madial wall of oil filler point 11, so as to realize grease Injection.

During transmission, steel ball 22 is constantly rolled step chains between the inner ring 21 of bearing 2 and outer ring 23, so that will The grease of injection is uniformly filled in the lubrication that bearing 2 is realized in the gap between inner ring 21 and outer ring 23.

Embodiment two：

A kind of step chains, reference picture 4 and Fig. 5, based on embodiment one, the present embodiment exists with the difference of embodiment one In：The closure 4 of the present embodiment is different from the annexation of chain rivet 1, the side of the closure 4 of the present embodiment and the end of chain rivet 1 Wall rotates connection, and the side for having the end wall of oil filler point 11 in chain rivet 1 is provided with pin, and closure 4 is connected to by pin rotation On the end wall of chain rivet 1, relative to the loss that embodiment one can effectively reduce closure 4.

Torsion elastic component 41 is provided between closure 4 and the end wall of chain rivet 1, torsion elastic component 41 can be torsion block rubber And torque spring, preferred torque spring here, torque spring is socketed on pin, and torque spring is made by the elastic force of its own With so as to closure 4 is pushed against on the end wall of chain rivet 1, oil filler point 11 being sealed.

Operation principle is as follows：Difference with embodiment one is:When needing to grease is injected in bearing 2, operation Personnel directly can rotate closure 4 at pin, so that oil filler point 11 is open mode, in order to inject grease；When Grease injection after the completion of, directly closure 4 is unclamped, closure 4 in the presence of torque spring, closure 4 around pin rotation, Until be pushed against on the end wall of chain rivet 1, to realize the automatic-sealed of oil filler point 11.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.Should refer to Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a kind of step chains, including chain rivet (1), the bearing (2) being socketed on chain rivet (1) circumferential side wall, bearing is separately positioned on (2) along the sealing (3) of chain rivet (1) axial direction both sides on, it is characterised in that：The inner ring (21) of bearing (2) is provided through Oil Guide Hole (211), one of end wall of the chain rivet (1) is provided with the oil filler point (11) communicated with oil guiding hole (211).

2. step chains according to claim 1, it is characterised in that：An end of the chain rivet (1) with oil filler point (11) Wall is provided with the closure (4) for blocking oil filler point (11).

3. step chains according to claim 2, it is characterised in that：The closure (4) and oil filler point (11) madial wall spiral shell Line is connected.

4. step chains according to claim 2, it is characterised in that：The side of the closure (4) and the end wall of chain rivet (1) Connection is rotated, elastic reaction is provided between the closure (4) and chain rivet (1) end wall so that closure (4) is pushed against Torsion elastic component (41) on chain rivet (1) end wall.

5. step chains according to claim 1, it is characterised in that：The circumferential side wall of the chain rivet (1) is fixedly installed two It is individual and be located at bearing (2) respectively along centring ring of chain rivet (1) the axial direction both sides to prevent bearing (2) from being moved axially along chain rivet (1) (12)。

6. step chains according to claim 5, it is characterised in that：Also include be arranged on chain rivet (1) circumferential side wall and by Inner plate (5), outer plate (6) that centring ring (12) is socketed successively respectively to chain rivet (1) axial direction two ends, each described centring ring (12) rolled towards the side of corresponding inner plate (5) and be provided with several balls (121) offseted with inner plate (5).

7. step chains according to claim 6, it is characterised in that：The inner plate (5) sets towards the side of outer plate (6) The bulge loop (51) coaxial with chain rivet (1) is equipped with, the side of the outer plate (6) is provided with the scrobicular ring with bulge loop (51) male-female (61)。

8. step chains according to claim 7, it is characterised in that：The lateral wall of the bulge loop (51) is provided with oil storage grooves (52)。

9. step chains according to claim 8, it is characterised in that：It is provided between the inner plate (5) and outer plate (6) The sealing ring (7) coaxial with chain rivet (1), the diameter with diameter greater than bulge loop (51) of the sealing ring (7).

10. step chains according to claim 9, it is characterised in that：It is provided with the sealing ring (7) for keeping sealing Enclose the air pressure cavity (71) of (7) elastic force.