CN112173935A

CN112173935A - Waterproof step chain with special structure

Info

Publication number: CN112173935A
Application number: CN202010846081.2A
Authority: CN
Inventors: 黄伟达; 夏占豪; 拱建军; 马建兴
Original assignee: Universal Transmission Taizhou Co ltd
Current assignee: Universal Transmission Taizhou Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-01-05

Abstract

The invention relates to a waterproof step chain with a special structure. The technical scheme is as follows: a waterproof step chain with a special structure comprises a chain A and a chain B which are formed by sequentially connecting a plurality of chain links, wherein each chain link comprises an inner chain plate and a sleeve, the two sides of the adjacent ends of the adjacent chain links are provided with an outer chain plate and an axle chain plate, one end of the connection of the adjacent chain links penetrates through the corresponding inner chain plate, sleeve, outer chain plate and axle chain plate through a retainer ring pin shaft, the other end of the connection of the adjacent chain links penetrates through the corresponding inner chain plate, sleeve, outer chain plate and axle chain plate through a D-shaped pin shaft, felt sealing rings and filler sealing rings are arranged between the inner chain plate and the outer chain plate and between the inner chain plate and the axle chain plate, and a guide wheel assembly is arranged on one. The invention has the advantages that: the hinge has good protection effect on external dust, water, foreign matters and the like, and can enable the injected grease to stay in the gap between the pin shaft and the sleeve for a long time, prolong the lubricating time between the pin shaft and the sleeve, reduce the abrasion between parts when the hinge rotates and prolong the service life.

Description

Waterproof step chain with special structure

Technical Field

The invention relates to a chain, in particular to a waterproof step chain with a special structure.

Background

At present, China is a large country for manufacturing escalators and a large country for consumption, and the annual output of the escalator reaches the front of the world. The world's various well-known brands reside in china, such as general (KONE) in finland, ausers (OTIS) in the united states, SHANGHAI mitsubishi (SHANGHAI mitsubis) in midday, HITACHI (HITACHI) in japan, seamong elevators (xialift) in china, sudada in switzerland (Schindler), changda in taiwan (YUNGTAY) in china, TOSHIBA in japan (TOSHIBA), fujieda in china (FUJITEC), kangli in China (CANNY), and so on. The escalator is mainly applied to places such as large shopping centers, supermarkets, stations, docks, airports, subways and the like, public infrastructures are in the development period of China, the market demand is large, and the prospect is good. Outdoor escalators are also used in large quantities due to different use places. In terms of the structural characteristics and the use conditions of the conventional outdoor escalator, the bearing of the step main wheel is basically designed to be waterproof, and the key structural protection of a connecting auxiliary sleeve and a pin shaft of a step chain is basically not provided; in addition, the conventional step chain is lubricated by oil dripping of machine oil outside the manual or semi-automatic chain, and the oil filling mode is easy to cause environmental pollution and fire risks due to leakage of the oil dripping. Therefore, a new technical solution should be provided to solve the above problems.

Disclosure of Invention

The invention aims to provide a waterproof step chain with a special structure aiming at the defects that the prior chain oiling easily causes environmental pollution and fire risk, has poor protection performance on external dust, water, foreign matters and the like and has poor lubricating performance among various parts of the chain.

In order to achieve the purpose, the invention provides the following technical scheme:

a waterproof step chain with a special structure comprises a chain A and a chain B which are used in a matched mode and a plurality of step shafts arranged between the chain A and the chain B, wherein the chain A and the chain B are formed by sequentially connecting a plurality of chain links, each chain link comprises an inner chain plate and a sleeve, the two inner chain plates are arranged in parallel and at intervals, the inner sides of the two ends of each chain link are respectively provided with the sleeves, the two sides of the adjacent ends of the adjacent chain links are respectively provided with an outer chain plate and a shaft chain plate, one end of the connection of the adjacent chain links penetrates through the corresponding inner chain plate, sleeve, outer chain plate and shaft chain plate through a retainer ring pin shaft, the other end of the connection of the adjacent chain links penetrates through the corresponding inner chain plate, sleeve, outer chain plate and shaft chain plate through a D-shaped pin shaft to realize the connection of the adjacent chain links, the sleeve is sleeved with a main wheel, and felt sealing rings and filler sealing rings are sequentially, and a guide wheel assembly is arranged on one side of each step shaft, the guide wheel assembly comprises two guide wheels, each guide wheel is fixedly connected with a U-shaped auxiliary plate through a guide wheel connecting pin, and two side edges of the U-shaped auxiliary plate are fixed between the shaft chain plates and the outer chain plates which are arranged in parallel through screw assemblies.

The further technical scheme is as follows:

the step shaft comprises a middle step shaft, two ends of the middle step shaft are fixedly connected with a D-shaped pin shaft through bolt assemblies respectively, a shaft sleeve is arranged on the D-shaped pin shaft, and the shaft sleeve is clamped and fixed on the D-shaped pin shaft through a clamping ring through a screw assembly.

And one ends of the retainer ring pin shaft and the D-shaped pin shaft are provided with pressure filling oil cups, and oil storage grooves and oil holes are processed on the retainer ring pin shaft and the D-shaped pin shaft.

And a central hole is formed in the central position of one end, far away from the pressure filling oil cup, of the D-shaped pin shaft.

The preferable technical scheme is as follows:

the packing seal ring is made of nitrile rubber.

The felt sealing ring is made of coal tar asphalt felt.

Compared with the prior art, the technical scheme provided by the invention has the following technical effects:

1. according to the waterproof step chain with the special structure, the pressure oil filling cups are arranged at one ends of the retainer ring pin shaft and the D-shaped pin shaft, and the oil storage grooves and the oil holes are formed in the retainer ring pin shaft and the D-shaped pin shaft.

2. According to the waterproof step chain with the special structure, the felt sealing rings and the filler sealing rings are sequentially arranged between the inner chain plate and the outer chain plate and between the inner chain plate and the shaft chain plate, so that the step chain has a good protection effect on external dust, water, foreign matters and the like penetrating into the chain links, injected grease can be remained in the gap between the pin shaft and the sleeve for a long time, the lubricating time between the pin shaft and the sleeve is prolonged, the abrasion among parts during the rotation of the hinge is reduced, and the service life of the chain is prolonged.

3. According to the waterproof step chain with the special structure, the guide wheel assembly is arranged on one side of each step shaft, the guide wheel assembly is designed to ensure that the step chain can correctly run on the truss track of the escalator, the step chain is prevented from being rubbed with a chain wheel, a driving chain wheel and the like, a step pedal is rubbed with an apron plate, and the phenomenon that an idler wheel cannot be correctly meshed with a main wheel or the chain plate is rubbed with the chain wheel is avoided; meanwhile, the running noise of the escalator is reduced, the running stability of the escalator is improved, and the service life of the step chain is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic top view of the structure of fig. 1.

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1.

FIG. 4 is a schematic cross-sectional view taken along the direction of line B-B in FIG. 1.

FIG. 5 is a schematic cross-sectional view taken along line E-E in FIG. 1.

Fig. 6 is an enlarged schematic view of fig. 2F.

Fig. 7 is an enlarged schematic view of fig. 4H.

Fig. 8 is a schematic cross-sectional view taken along the direction of fig. 2C-C.

Fig. 9 is an enlarged schematic view of fig. 2D.

Fig. 10 is a schematic cross-sectional view of a D-shaped pin.

Wherein: 100. the chain A, 200, the chain B, 300, the step shafts, 300-1, the middle step shaft, 300-2, a bolt assembly, 300-3, a clamping ring, 300-4, a shaft sleeve, 1, an inner chain plate, 2, a sleeve, 3, an outer chain plate, 4, a shaft chain plate, 5, a retainer ring pin shaft, 6, a D-shaped pin shaft, 7, a main wheel, 8, a felt sealing ring, 9, a packing sealing ring, 10, a guide wheel, 11, a guide wheel connecting pin, 12, a U-shaped auxiliary plate, 13, an injection oil cup, 14, a center hole, 15, a transition chain plate, 16 and a detachable retainer ring pin shaft.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc., indicate orientations or positional relationships based on those shown in fig. 1, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1-5, the invention provides a waterproof step chain with a special structure, which comprises a chain a100 and a chain B200 used in pairs and a plurality of step shafts 300 arranged between the chain a100 and the chain B200, wherein the chain A1 and the chain B2 are formed by connecting a plurality of chain links in sequence, each chain link comprises two inner chain plates 1 and a sleeve 2, the inner chain plates 1 are arranged in parallel and at intervals, sleeves 2 are respectively arranged on the inner sides of the two ends, outer chain plates 3 and shaft chain plates 4 are respectively arranged on the two sides of the adjacent ends of the adjacent chain links, one end of the connection of the adjacent chain links passes through the corresponding inner chain plate 1, sleeve 2, outer chain plate 3 and shaft chain plate 4 by a retaining ring pin 5, the other end passes through the corresponding inner chain plate 1, sleeve 2, outer chain plate 3 and shaft chain plate 4 by a D-shaped pin 6, the connection of the adjacent chain links is realized, a main wheel 7 is sleeved on the sleeve 2, be equipped with asphalt felt sealing washer 8 and packing sealing washer 9 between inner link board 1 and the outer link board 2 and between inner link board 1 and the axle chain board 4 in proper order, install the guide pulley subassembly at the unilateral of every step axle 3, the guide pulley subassembly includes two guide pulleys 10, every guide pulley 10 attaches board 12 fixed connection through guide pulley connecting pin 11 and U type, the U type attaches the both sides limit of board 12 and passes through the screw subassembly to be fixed between parallel arrangement's axle chain board 4 and outer link board 3. In the embodiment, the positions of the shaft chain plate 4 and the outer chain plate 3 for fixing the U-shaped auxiliary plate 12 are staggered to form a stress triangle, so as to play a role in stabilizing the structure.

Preferably, as shown in fig. 3 and 8, as a second embodiment of the present invention, this embodiment further defines the first embodiment, the step shaft 300 includes an intermediate step shaft 300-1, both ends of the intermediate step shaft 300-1 are respectively fixedly connected with a D-shaped pin 6 through bolt assemblies 300-2, a shaft sleeve 300-4 is disposed on the D-shaped pin 6, and the shaft sleeve 300-4 is clamped and fixed on the D-shaped pin 6 through a screw assembly by a clamping ring 300-3.

Preferably, as shown in fig. 4, as a third embodiment of the present invention, this embodiment is a further improvement of the first embodiment, a pressure filling oil cup 13 is installed at one end of the retainer pin 5 and one end of the D-shaped pin 6, and an oil storage groove and an oil hole (not shown in the drawing) are machined on the retainer pin 5 and the D-shaped pin 6. The structure design can ensure that the chain is convenient to inject oil during maintenance, and the oil can be injected into the pin bush gap in time.

Preferably, as shown in fig. 10, as a fourth embodiment of the present invention, this embodiment is a further improvement of the second embodiment, a central hole 14 is formed in a central position of one end of the D-shaped pin 6 away from the oil filling cup 10, and the design of the central hole 14 can ensure the diameter size of the D-shaped pin 6 and the coaxiality and symmetry of the processing of the pin holes formed in the surface of the D-shaped pin 6, so as to improve the stress consistency of the step tread, reduce step vibration, and further improve the service life of the step chain.

As shown in fig. 7, in the fifth embodiment of the present invention, the filler packing 9 is preferably made of nitrile rubber because the nitrile rubber has good oil resistance. The coal tar asphalt felt is not stuck together when the atmospheric temperature is lower than 35 ℃; at temperatures above 10 ℃, it spreads easily without cracks; and also has a water impermeability of 400 g for 7 days and nights at a pressure of 50 mm high in the water column; no dripping, no expansion, no foaming, no sticking, no flowing of the spread and the like at the temperature of below 60 ℃. So the felt seal ring 8 is made of coal tar asphalt felt.

The packing seal ring 9 and the felt seal ring 10 can form a closed space between the inner chain plate and the outer chain plate (including the shaft chain plate, the connecting chain plate and the different-hole outer chain plate), so that the wear-resistant grease can be fully recycled in the closed space, and the hinge pair sleeve and the pin shaft can be fully lubricated.

Preferably, as shown in fig. 1 and 2, as a sixth embodiment of the present invention, this embodiment is a supplementary embodiment of the first embodiment, when the total number of steps of the step chain of the present invention is an odd number of steps of a multiple of 3, in order to link the chain, a transitional link is provided to connect, the transitional link comprises two transitional link plates 15 arranged in parallel and at intervals, and a detachable collar pin 16 passes through the two transitional link plates 15 and the inner link plate and the sleeve of the previous link, so as to connect the adjacent links.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. The utility model provides a waterproof step chain of special construction, is including pairing chain A (100) and chain B (200) of using and setting up many step axle (300) between chain A (100) and chain B (200), chain A (1) and chain B (2) are connected gradually by a plurality of chain links and are constituted, and every chain link includes interior link joint (1) and sleeve (2), interior link joint (1) has two, and parallel and interval setting, and both ends inboard is equipped with sleeve (2) respectively, the both sides of the adjacent end of adjacent chain link are equipped with outer link joint (3), axle link joint (4) respectively, and the one end of the connection of adjacent chain link is passed corresponding interior link joint (1), sleeve (2), outer link joint (3) and axle link joint (4) by retaining ring round pin axle (5), and the other end is passed corresponding interior link joint (1), sleeve (2) by D type round pin axle (6), and the other end is passed, Outer chain link (3) and axle chain board (4), realize the connection of adjacent chain link, two retaining ring round pin axles in interval between adjacent D type round pin axle (6) the cover is equipped with main wheel (7) on sleeve (2) be equipped with asphalt felt sealing washer (8) and packing sealing washer (9) between inner chain link (1) and outer chain link (2) and between inner chain link (1) and axle chain board (4) in proper order, install the guide pulley subassembly at the unilateral of every step axle (3), the guide pulley subassembly includes two guide pulleys (10), every guide pulley (10) attach board (12) fixed connection through guide pulley connecting pin (11) and U type, the U type attaches the both sides screw limit of board (12) and passes through the subassembly to be fixed between parallel arrangement's axle chain link (4) and outer chain link (3).

2. The waterproof step chain of special construction as claimed in claim 1, wherein: the stair shaft (300) comprises a middle stair shaft (300-1), two ends of the middle stair shaft (300-1) are fixedly connected with a D-shaped pin shaft (6) through bolt assemblies (300-2), a shaft sleeve (300-4) is arranged on the D-shaped pin shaft (6), and the shaft sleeve (300-4) is clamped and fixed on the D-shaped pin shaft (6) through a screw assembly by a clamping ring (300-3).

3. The waterproof step chain of a special structure of claim 1 or 2, wherein: and one ends of the retainer ring pin shaft (5) and the D-shaped pin shaft (6) are provided with pressure filling oil cups (13), and oil storage grooves and oil holes are processed on the retainer ring pin shaft (5) and the D-shaped pin shaft (6).

4. A waterproof step chain of special construction as claimed in claim 3, wherein: the center of one end of the D-shaped pin shaft (6) far away from the pressure filling oil cup (10) is provided with a center hole (14).

5. The waterproof step chain of special construction as claimed in claim 1, wherein: the packing seal ring (9) is made of nitrile rubber.

6. The waterproof step chain of special construction as claimed in claim 1, wherein: the felt sealing ring (8) is made of coal tar asphalt felt.