CN213929306U

CN213929306U - Multi-row chain

Info

Publication number: CN213929306U
Application number: CN202022164196.1U
Authority: CN
Inventors: 吴厚德
Original assignee: Amc Chain Industrial Co ltd
Current assignee: Amc Chain Industrial Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-27
Publication date: 2021-08-10
Anticipated expiration: 2030-09-27
Also published as: TWM604739U

Abstract

A multi-row chain comprises a plurality of inner chain units, a plurality of outer chain units and a plurality of serial connection units for connecting the outer chain units and the inner chain units. Each of the inner chain units includes at least two inner chain pieces. Each outer chain unit comprises at least one middle sheet between the inner sides of two adjacent inner chain units, and two outer chain sheets which are positioned on two opposite sides of the at least one middle sheet and are adjacent to the outer sides of the two inner chain units. Each series connection unit comprises a pin shaft penetrating through the corresponding outer chain sheet, the inner chain sheet and the at least one middle sheet, and two rollers sleeved on the pin shaft and respectively positioned on two opposite sides of the corresponding outer chain unit, and two adjacent series connection units and the corresponding outer chain units are matched to define two spaced engagement spaces which are respectively opened outwards. By means of the design, the effects of simplifying the components and shortening the pin shaft can be achieved.

Description

Multi-row chain

Technical Field

The present invention relates to a chain, and more particularly to a multi-row chain suitable for use in a highly loaded machine.

Background

Referring to fig. 1, 2 and 3, a conventional double-strand chain 1 includes a plurality of inner chain units 11 oppositely arranged in two rows along a length direction 101, a plurality of outer chain units 12 oppositely arranged in two rows along the length direction 101 and staggered with the inner chain units 11, and a tandem unit 13 pivotally connecting the outer chain units 12 and the inner chain units 11.

Each of the inner chain units 11 includes two inner chain pieces 111 disposed opposite to each other, two bushings 112 spaced apart from each other along the length direction 101 and connected to the inner chain pieces 111 to separate the inner chain pieces 111, and two rollers 113 rotatably sleeved on the bushings 112, respectively, wherein the rollers 113 and the inner chain pieces 111 cooperate to define an engaging space 14. Each of the outer chain units 12 includes a middle plate 121 located inside the corresponding inner chain unit 11, and an outer chain plate 122 located outside the corresponding inner chain unit 11 and corresponding to the middle plate 121. The concatenation unit 13 includes a plurality of pins 131 passing through the corresponding inner and outer links 122, the bushings 112, and the middle piece 121 along a coupling direction 102 perpendicular to the length direction 101, and each pin 131 is pivotally connected to the corresponding bushing 112 and fixedly connected to the corresponding outer link 122 and the corresponding middle piece 121.

Since the four inner links 111, the two outer links 122 and the two middle links 121 are serially connected to each pin 131, which is eight links in total, the conventional double-row chain 1 has the disadvantages of many components, troublesome assembly, heavy weight, high cost and the like, and each pin 131 also needs a corresponding length. In addition, since the conventional double-row chain 1 forms the engagement space 14 in each of the inner chain units 11, the bush 112 must be used to separate the two inner chain pieces 111, which not only increases the arrangement of the bush 112, but also the bush 112 is generally a round tube made of a rolled metal sheet, and a longitudinal joint (not shown) is left at the side edge of the round tube, and the longitudinal joint may contact with the pin 131 or the roller 113 during the operation of the conventional double-row chain 1, which may cause rapid wear or noise, so that the design of the conventional double-row chain 1 still needs to be improved.

Referring to fig. 4, a conventional double-row chain 2 is mainly formed by expanding a row at the center of two rows of the conventional double-row chain 1 shown in fig. 2, that is, the plurality of inner chain units 21 are arranged in three rows, and defines three rows of the engagement spaces 24, the plurality of outer chain units 22 are also arranged in three rows, and each of the outer chain units 22 located at the center is formed by regarding the outer chain piece 222 as the middle piece 221, therefore, the chain connecting device comprises two middle plates 221, the middle plate 221 of each outer chain unit 22 positioned at the center is respectively superposed on the middle plates 221 of the corresponding outer chain units 22 positioned at two outer sides of the middle plate, six inner chain plates 211, two outer chain plates 222 and twelve middle plates 221 which are totally arranged on the pin shaft 231 of the corresponding series connection unit 23 in series, the prior three-row chain 2 thus also has the disadvantages of the prior two-row chain 1 of fig. 2.

Disclosure of Invention

An object of the utility model is to provide a multirow chain that can overcome at least one shortcoming of background art.

The utility model discloses a multirow chain contains interior chain unit, the several that the several was arranged along length direction arranges and with the outer chain unit of interior chain unit dislocation set, and the several along length direction interval arrangement connects outer chain unit with the unit concatenates of interior chain unit.

Each inner chain unit comprises two oppositely arranged inner chain sheets, and each inner chain sheet is provided with two spaced inner chain holes.

Each outer chain unit comprises a middle plate between the inner sides of two adjacent inner chain units, and two outer chain plates which are oppositely arranged on two opposite sides of the middle plate and are adjacent to the outer sides of two adjacent inner chain units, wherein the middle plate is provided with two spaced middle holes, and each outer chain plate is provided with two spaced outer chain holes.

Each series connection unit comprises a pin shaft which extends along a coupling direction perpendicular to the length direction and penetrates through the outer chain hole, the inner chain hole and the middle hole which are communicated with each other inside and outside, and two rollers which are sleeved on the pin shaft and are respectively positioned on two opposite sides of the corresponding outer chain unit, the pin shaft is provided with two shaft ends formed by the two ends of the pin shaft in a protruding and expanding mode, the shaft ends can respectively limit the rollers and cannot be separated from the pin shaft, and two adjacent series connection units and the corresponding outer chain units are matched to define two meshing spaces which are spaced along the coupling direction and are respectively open outwards.

The utility model discloses a multirow chain, each the round pin axle with corresponding the roller is the loose fit, each the round pin axle with corresponding outer chain hole is the tight fit, each the round pin axle with corresponding interior chain hole is the loose fit, each the round pin axle with corresponding the centre bore is the tight fit.

The utility model discloses a multirow chain, each the round pin axle with corresponding the roller is the loose fit, each the round pin axle with corresponding outer chain hole is the tight fit, each the round pin axle with corresponding interior chain hole is the loose fit, each the round pin axle with corresponding the centre bore is the loose fit.

The utility model discloses a multirow chain, each the axle head of round pin axle has the end groove of concavely locating the terminal surface and forming the chamfer on four sides separately.

Each inner chain unit comprises a plurality of inner chain sheets arranged in two rows, and each inner chain sheet is provided with two spaced inner chain holes.

Each outer chain unit comprises a plurality of middle plates which are oppositely arranged in two rows and are arranged between the inner sides of two adjacent inner chain units, and two outer chain plates which are oppositely arranged with the middle plates and are adjacent to the outer sides of two adjacent inner chain units, each middle plate is provided with two spaced middle holes, and each outer chain plate is provided with two spaced outer chain holes.

Each series connection unit comprises a pin shaft which extends along the coupling direction perpendicular to the length direction and penetrates through the corresponding outer chain hole, the inner chain hole and the middle hole which are communicated with each other inside and outside, and three rollers which are sleeved on the pin shaft and are respectively positioned on two opposite sides of the corresponding outer chain unit and between the middle sheets, the pin shaft is provided with two shaft ends formed by the sudden expansion of the two ends of the pin shaft, the shaft ends can respectively limit the rollers and cannot be separated from the pin shaft, two adjacent series connection units and the corresponding outer chain units are matched to define three meshing spaces which are separated along the coupling direction, and the meshing spaces positioned on two outer sides are respectively opened outwards.

The utility model discloses a multirow chain, each the inner chain unit includes that four are arranged into two rows the inner chain piece, each the outer chain unit includes that two are arranged into two rows the intermediate lamella, and two outer chain piece, the intermediate lamella is located central authorities roller both ends and two rows between the inner chain piece.

The utility model discloses a multirow chain, each the inner chain unit includes that six are arranged into two rows the inner chain piece, each the outer chain unit includes that two are arranged into two rows the intermediate lamella, and two outer chain piece, the intermediate lamella is located central authorities roller both ends and two rows between the inner chain piece.

The utility model discloses a multirow chain, each the inner chain unit includes that eight are arranged into two rows the inner chain piece, each the outer chain unit includes that four are arranged into two rows the intermediate lamella, and two outer chain piece, the intermediate lamella is located central authorities roller both ends and two rows between the inner chain piece.

The utility model discloses a multirow chain, each the inner chain unit includes that ten are arranged into two rows the inner chain piece, each the outer chain unit includes that six are arranged into two rows the intermediate lamella, and two outer chain piece, the intermediate lamella is located central authorities roller both ends and two rows between the inner chain piece.

The beneficial effects of the utility model reside in that: the multi-row chain can achieve the effects of simplifying assemblies and shortening pin shafts by the design that two rows of engagement spaces which are opened outwards are formed on two outer sides respectively.

Drawings

Other features and advantages of the present invention will become apparent from the following detailed description of the preferred embodiments with reference to the accompanying drawings, in which:

FIG. 1 is a side view of a prior art double row chain illustrating a plurality of chain eye configurations therein;

FIG. 2 is a partial cross-sectional view of the prior art double row chain;

FIG. 3 is a partially cross-sectional exploded view of the prior art double row chain illustrating the components strung on a pin;

FIG. 4 is a partial cross-sectional view of a prior art three row chain illustrating several chain link configurations therein;

FIG. 5 is a side view of a first embodiment of the multi-row chain of the present invention illustrating several chain link configurations thereof;

FIG. 6 is a partial cross-sectional view of the first embodiment;

FIG. 7 is a partial cross-sectional exploded view of the first embodiment illustrating components strung on a pin;

FIG. 8 is a partial cross-sectional view of a second embodiment of the multi-row chain of the present invention, illustrating several of the chain eye configurations;

FIG. 9 is a partial cross-sectional view of a third embodiment of the multi-row chain of the present invention, illustrating several of the chain eye configurations;

FIG. 10 is a partial cross-sectional view of a fourth embodiment of the multi-row chain of the present invention, illustrating several of the chain eye configurations;

fig. 11 is a partial cross-sectional view of a fifth embodiment of the multi-row chain of the present invention, illustrating several of the chain eye configurations.

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals.

Referring to fig. 5, 6 and 7, the multi-row chain of the present invention is formed by connecting a plurality of chain meshes, and is suitable for engaging around two chain wheels (not shown) along a length direction 31, and the first embodiment is a double-row chain and comprises a plurality of inner chain units 4, a plurality of outer chain units 5, and a plurality of series-connection units 6.

The inner chain units 4 are arranged along the length direction 31, each inner chain unit 4 includes two inner chain pieces 41 oppositely arranged along an axial connection direction 32 perpendicular to the length direction 31, and each inner chain piece 41 has two inner chain holes 411 spaced along the length direction 31.

The outer chain units 5 are arranged along the length direction 31 and are arranged in a staggered manner with respect to the inner chain units 4, each outer chain unit 5 includes a middle plate 51 between the inner sides of two adjacent inner chain units 4, and two outer chain plates 52 located on two opposite sides of the middle plate 51 and adjacent to the outer sides of two adjacent inner chain units 4. The middle plate 51 has two middle holes 511 spaced apart along the length direction 31, and the middle holes 511 correspond to the adjacent inner link holes 411 of the adjacent inner link 41, that is, the middle hole 511 on the left side communicates with the inner link hole 411 on the right side of the inner link 41 on the left side in the inside and outside, and the middle hole 511 on the right side communicates with the inner link hole 411 on the left side of the inner link 41 on the right side in the inside and outside. Each of the outer links 52 has two outer link holes 521 corresponding to and communicating with the middle hole 511.

The tandem units 6 are arranged at intervals along the length direction 31 and connect the outer chain units 5 with the inner chain units 4 to form the chain mesh, each of the tandem units 6 includes a pin 61 extending along the coupling direction 32 and passing through the corresponding outer chain hole 521, the inner chain hole 411 and the middle hole 511, which are communicated with each other inside and outside, and two rollers 62 sleeved on the pin 61 at intervals and respectively located on two opposite sides of the corresponding outer chain unit 5. Each pin 61 has two shaft ends 611 formed at two ends and respectively extending out of the corresponding roller 62, each shaft end 611 has an end groove 612 concavely arranged on the end surface and forming a four-sided chamfer, and through the stamping arrangement of the end groove 612, the shaft ends 611 can be forced to radially expand, and can be respectively limited so that the rollers 62 cannot be separated. Each of the rollers 62 has a roller hole 621. The two adjacent tandem units 6 cooperate with the corresponding outer chain unit 5 to define two engagement spaces 7 spaced apart from each other in the axial direction 32 and open outward, respectively, for engagement of the corresponding sprockets.

To facilitate understanding of the assembled state, the shaft-hole relationship of the above structure is further described, the shaft-hole loose fit is a pivot connection relationship capable of rotating relatively, and the shaft-hole tight fit is a fixed connection relationship incapable of rotating relatively. Each pin 61 is loosely fitted to each roller hole 621, so that each roller 62 can rotate freely around the pin 61, thereby preventing partial wear, and can be engaged with the corresponding sprocket correctly and flexibly to prevent the chain from jumping or generating abnormal noise. Each pin 61 is tightly fitted with each outer link hole 521, so that the inner link holes 411 and the middle holes 511 are limited at the center (i.e., the middle section) of the pin 61, and the inner links 41 are prevented from being separated outwards and falling off, thereby achieving the positioning function. Each pin 61 is loosely fitted in each inner link hole 411, so that the outer link unit 5 can pivot relative to the inner link unit 4, that is, each link can flexibly rotate, and the multiple rows of links can smoothly run. Each pin 61 is tightly fitted with each middle hole 511, and since the tension side and the slack side of the multi-row chain are continuously and alternately changed and receive the load periodically and repeatedly, since there is no gap between the two, the vibration amplitude can be reduced and the fatigue performance can be improved. In practice, the pin shafts 61 and the middle holes 511 may also be loosely fitted, so that the assembly is convenient.

The multi-row chain is designed to shift the outer chain links 52 toward the center (i.e., middle section) of the pin 61 toward the inner side of the roller 62, and the engaging space 7 is opened in a double-faced outward manner, which not only can limit the inner chain link 41 by matching with the middle plate 51 to prevent the inner chain link 41 from sliding and rubbing in the shaft connecting direction 32, and each pin 61 is provided with only five inner chain pieces 41, one middle piece 51 and two outer chain pieces 52 in series, the inner chain link 41 and one of the intermediate links 51 of the conventional double-row chain of fig. 2 located outside the rollers 62 can also be omitted, and the design of the bush that is used for connecting interior chain piece 41, namely for current double chain, the utility model discloses the reducible three chain piece of each chain mesh and two bushes of multirow chain also can subtract the weak point simultaneously the length of round pin axle 61.

Referring to fig. 8, the second embodiment of the multi-row chain of the present invention has substantially the same structure as the first embodiment, except that: the second embodiment is a three-row chain, which is mainly configured by expanding a row at the center of the structure of the first embodiment, each of the outer chain units 5 includes two outer chain pieces 52 and two middle pieces 51, that is, in addition to the outer chain pieces 52 and the middle pieces 51 of the first embodiment, another middle piece 51 opposite to the middle piece 51 is added to the second embodiment, and each of the tandem units 6 includes three rollers 62, that is, another roller 62 between the middle pieces 51 is added, so that two adjacent tandem units 6 and the corresponding outer chain unit 5 cooperate to define three engagement spaces 7 spaced apart along the axial connection direction 32, and the engagement spaces 7 on two outer sides are also opened outwards respectively. In addition, each of the inner chain units 4 includes four inner chain links 41 arranged in two rows, that is, two overlapped inner chain links 41 are disposed between each of the outer chain links 52 and the adjacent middle link 51, but in other variations of the second embodiment, each of the inner chain units 4 may only include two thicker inner chain links 41, that is, two overlapped inner chain links 41 become one inner chain link 41, and will not be described again here. Therefore, each pin 61 is provided with eight chain pieces in total, namely four inner chain pieces 41, two middle pieces 51 and two outer chain pieces 52, and compared with the conventional three-row chain shown in fig. 3, the length of the pin 61 can be reduced by reducing four chain pieces and three bushings for each chain of the multi-row chain according to the second embodiment.

Referring to fig. 9, the third embodiment of the multi-row chain of the present invention has a structure substantially the same as the second embodiment, and is also a three-row chain, the difference is: depending on the requirement of the use strength, the number of the inner chain pieces 41 may be optionally increased to increase the strength, and each of the inner chain units 4 of the third embodiment includes six inner chain pieces 41 arranged in two rows, each of which has three inner chain pieces 41. Therefore, each pin 61 is provided with ten chain pieces in total, namely, six inner chain pieces 41, two middle pieces 51 and two outer chain pieces 52.

Referring to fig. 10, the structure of the fourth embodiment of the multi-row chain of the present invention is substantially the same as the second embodiment, and is also three rows of chains, the difference being: in the fourth embodiment, the number of the inner chain pieces 41 and the intermediate pieces 51 is increased to increase the use strength, wherein each of the inner chain units 4 includes eight inner chain pieces 41 arranged in two rows, each row has four inner chain pieces 41, each of the outer chain units 5 includes two outer chain pieces 52, and four intermediate pieces 51 arranged in pairs and each row has two, and the intermediate pieces 51 are located between two ends of the roller 62 at the center and two rows of the inner chain pieces 41. Therefore, each pin 61 is provided with eight inner links 41, four middle links 51, and two outer links 52 in series, for a total of fourteen links.

Referring to fig. 11, the structure of the fifth embodiment of the multi-row chain of the present invention is substantially the same as the second embodiment, and is also three rows of chains, the difference is: in the fifth embodiment, the number of the inner links 41 and the intermediate links 51 is further increased, wherein each of the inner link units 4 includes ten inner links 41 arranged in two rows and five inner links in each row, each of the outer link units 5 includes six intermediate links 51 arranged in two rows and three intermediate links in each row in addition to two outer links 52, and the intermediate links 51 are located between two ends of the roller 62 at the center and two inner links 41 in the two rows. Therefore, ten inner links 41, six middle links 51, and two outer links 52 are strung on each pin 61 for eighteen links.

It should be noted that the number of the inner links 41 and the middle links 51 is not limited to the first to fifth embodiments, and the multi-row chain of the present invention can be expanded to four rows of chains, five rows of chains, six rows of chains or more according to actual requirements, which is not illustrated herein.

To sum up, the utility model discloses multirow chain, through inciting somebody to action inner chain unit 4 reaches outer chain unit 5 sets up concatenate unit 6 central authorities, and let concatenate the outside unsettled extension in both ends of unit 6, form open outwards the design of meshing space 7 can simplify the subassembly and subtract short round pin axle 61, can have the efficiency of convenient equipment, weight reduction and reduce cost, so can reach cost utility model's purpose really.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still within the scope of the present invention.

Claims

1. A multi-row chain comprising: the chain comprises a plurality of inner chain units arranged along the length direction, a plurality of outer chain units arranged along the length direction and arranged in a staggered manner with the inner chain units, and a plurality of serial connection units arranged at intervals along the length direction and connecting the outer chain units with the inner chain units, and is characterized in that:

each inner chain unit comprises two inner chain sheets which are arranged oppositely, and each inner chain sheet is provided with two spaced inner chain holes;

each outer chain unit comprises a middle plate between the inner sides of two adjacent inner chain units, and two outer chain plates which are oppositely arranged on two opposite sides of the middle plate and are adjacent to the outer sides of two adjacent inner chain units, the middle plate is provided with two spaced middle holes, and each outer chain plate is provided with two spaced outer chain holes; and

each series connection unit comprises a pin shaft which extends along a coupling direction perpendicular to the length direction and penetrates through the corresponding outer chain hole, the inner chain hole and the middle hole which are communicated with each other inside and outside, and two rollers which are sleeved on the pin shaft and are respectively positioned on two opposite sides of the corresponding outer chain unit, the pin shaft is provided with two shaft ends formed by expanding two ends of the pin shaft, the shaft ends can respectively limit the rollers and cannot be separated from the pin shaft, and two adjacent series connection units and the corresponding outer chain units are matched to define two meshing spaces which are respectively opened outwards at intervals along the coupling direction.

2. The multi-row chain according to claim 1, wherein: each pin shaft is in loose fit with the corresponding roller, is in close fit with the corresponding outer chain hole, is in loose fit with the corresponding inner chain hole, and is in close fit with the corresponding middle hole.

3. The multi-row chain according to claim 1, wherein: each pin shaft is in loose fit with the corresponding roller, is in close fit with the corresponding outer chain hole, is in loose fit with the corresponding inner chain hole, and is in loose fit with the corresponding middle hole.

4. The multi-row chain according to claim 1, wherein: and the shaft end of each pin shaft is provided with an end groove which is concavely arranged on the end surface and forms a chamfer on four sides.

5. A multi-row chain comprising: the chain comprises a plurality of inner chain units arranged along the length direction, a plurality of outer chain units arranged along the length direction and arranged in a staggered manner with the inner chain units, and a plurality of serial connection units arranged at intervals along the length direction and connecting the outer chain units with the inner chain units, and is characterized in that:

each inner chain unit comprises a plurality of inner chain sheets arranged in two rows, and each inner chain sheet is provided with two spaced inner chain holes;

each outer chain unit comprises a plurality of middle plates which are oppositely arranged in two rows and are arranged between the inner sides of two adjacent inner chain units, and two outer chain plates which are oppositely arranged with the middle plates and are adjacent to the outer sides of two adjacent inner chain units, each middle plate is provided with two spaced middle holes, and each outer chain plate is provided with two spaced outer chain holes; and

6. The multi-row chain according to claim 5, wherein: each pin shaft is in loose fit with the corresponding roller, is in close fit with the corresponding outer chain hole, is in loose fit with the corresponding inner chain hole, and is in close fit with the corresponding middle hole.

7. The multi-row chain according to claim 5, wherein: each pin shaft is in loose fit with the corresponding roller, is in close fit with the corresponding outer chain hole, is in loose fit with the corresponding inner chain hole, and is in loose fit with the corresponding middle hole.

8. The multi-row chain according to claim 5, wherein: each inner chain unit comprises four inner chain sheets which are arranged in two rows, each outer chain unit comprises two middle sheets which are arranged in two rows and two outer chain sheets, and the middle sheets are positioned between two ends of the roller at the center and the two rows of inner chain sheets.

9. The multi-row chain according to claim 5, wherein: each inner chain unit includes six rows of interior chain pieces, each outer chain unit includes two rows of intermediate lamella, and two outer chain pieces, the intermediate lamella is located central roller both ends and two rows between the interior chain piece.

10. The multi-row chain according to claim 5, wherein: each inner chain unit comprises eight inner chain pieces which are arranged in two rows, each outer chain unit comprises four middle pieces which are arranged in two rows and two outer chain pieces, and the middle pieces are positioned between two ends of the roller in the center and the two rows of inner chain pieces.

11. The multi-row chain according to claim 5, wherein: each inner chain unit comprises ten inner chain pieces which are arranged in two rows, each outer chain unit comprises six middle pieces which are arranged in two rows, and two outer chain pieces, and the middle pieces are positioned at the center between the two ends of the roller and the two rows of inner chain pieces.

12. The multi-row chain according to claim 5, wherein: and the shaft end of each pin shaft is provided with an end groove which is concavely arranged on the end surface and forms a chamfer on four sides.