CN116428315A - Toothed chain and chain transmission system - Google Patents

Toothed chain and chain transmission system Download PDF

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Publication number
CN116428315A
CN116428315A CN202310433906.1A CN202310433906A CN116428315A CN 116428315 A CN116428315 A CN 116428315A CN 202310433906 A CN202310433906 A CN 202310433906A CN 116428315 A CN116428315 A CN 116428315A
Authority
CN
China
Prior art keywords
chain
bearing surface
auxiliary
transmission
toothed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310433906.1A
Other languages
Chinese (zh)
Inventor
王洪军
邱德方
高欢欢
王丽丽
钟腾
陈钢
王飞
佟鑫
简鸿波
叶斌
宣成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Donghua Chain Group Co Ltd
Original Assignee
Hangzhou Donghua Chain Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou Donghua Chain Group Co Ltd filed Critical Hangzhou Donghua Chain Group Co Ltd
Priority to CN202310433906.1A priority Critical patent/CN116428315A/en
Publication of CN116428315A publication Critical patent/CN116428315A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/06—Driving-chains with links connected by parallel driving-pins with or without rollers so called open links
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
    • F16G15/12—Chain links
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/06—Gearings for conveying rotary motion by endless flexible members with chains
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)

Abstract

The invention relates to the field of chains, and particularly discloses a toothed chain and a chain transmission system. The tooth-shaped chain comprises a plurality of first chain links and a plurality of second chain links, wherein each first chain link comprises at least two first chain plates which are arranged in parallel, and two first pin holes are formed in each first chain plate; the second chain link comprises at least two second chain plates which are arranged in parallel, and two second pin holes are formed in the second chain plates; the first chain plate and the second chain plate are toothed chain plates; the inner wall surface of the first pin hole comprises a main bearing surface, an auxiliary bearing surface and an inner wall surface, and the projection of the auxiliary bearing surface on the axial section is arc-shaped; the side face of the pin shaft comprises a main transmission face and an auxiliary transmission face, the main transmission face is matched with the main bearing face, and the auxiliary transmission face is matched with the auxiliary bearing face. The toothed chain has the advantages of being simple in structure and convenient to process, and the whole service life of the chain is prolonged in a partition abrasion mode under different states.

Description

Toothed chain and chain transmission system
Technical Field
The invention relates to the field of chains, in particular to a toothed chain and a chain transmission system.
Background
The chain is a common mechanical transmission part and has the advantages of large transmission load and high transmission precision. After long periods of use, the chain has problems of wear, deformation and elongation, which is also one of the common failure modes of the chain. The common chain form comprises a plurality of chain links, each chain link is connected through a pin shaft, the contact part between the pin shaft and each chain link is a bearing part, and the chain form is also a weak point of mechanical property in the chain, and the failure of the chain also frequently occurs at the contact part between the pin shaft and the chain link.
In order to delay the failure of the chain and improve the service life of the chain, the applicant has previously developed a high wear-resistant mute chain and filed an application of the invention, the application publication number is CN 105090356A, the chain comprises a plurality of chain link units, each chain link unit comprises a guide plate, a flanging chain plate, a special-hole chain plate and a rolling pin, the special-hole chain plate is provided with a special-shaped hole, the flanging chain plate is provided with a flanging, and in an assembled state, the flanging is inserted into the special-shaped hole and is used for assisting in bearing load, and the wear resistance of the chain can be improved by increasing the form of a loaded surface.
However, the increased flanging form has the problem of complex processing, the flanging and the special-shaped holes are required to be matched for use, and the matching precision requirement between the chain plates is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a toothed chain and a chain transmission system, which are in the form of partition abrasion under different states, so that the overall service life of the chain is prolonged, and the toothed chain has the advantages of simple structure and convenience in processing.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the toothed chain comprises a plurality of first chain links and a plurality of second chain links, wherein each first chain link comprises at least two first chain plates which are arranged in parallel, and two first pin holes are formed in each first chain plate; the second chain link comprises at least two second chain plates which are arranged in parallel, and two second pin holes are formed in the second chain plates; the first chain links and the second chain links are distributed correspondingly from head to tail in sequence and are connected through pin shafts;
the first chain plate and the second chain plate are toothed chain plates;
the inner wall surface of the first pin hole comprises a main bearing surface, an auxiliary bearing surface and an inner wall surface, the main bearing surface and the inner wall surface are arranged oppositely in the circumferential direction, and the main bearing surface is positioned at one side, which is opposite to the other first pin hole, of the corresponding first pin hole; the auxiliary bearing surface is positioned between the main bearing surface and the inner side wall surface, and the projection of the auxiliary bearing surface on the axial section is arc-shaped;
the side face of the pin shaft comprises a main transmission face and an auxiliary transmission face, the main transmission face is matched with the main bearing face, and the auxiliary transmission face is matched with the auxiliary bearing face;
when the first chain link is positioned at the tight side of the chain, the main transmission surface is in extrusion contact with the main bearing surface; a gap is reserved between the pin shaft and the inner side wall surface, and a rolling interval is formed;
when the first chain link is meshed with the chain wheel, the auxiliary transmission surface is in extrusion contact with the auxiliary bearing surface, the main transmission surface is separated from the main bearing surface, and the pin shaft is not in contact with the inner side wall surface.
In the chain transmission system adopting the rolling pin shaft type chain, the main bearing surface of the first pin hole is in extrusion contact with the main bearing surface of the corresponding pin shaft and bears transmission on the first chain link positioned on the tight side of the chain. When the corresponding first chain link enters a state of meshing with the chain wheel, the first chain link and the second chain link relatively rotate under the guidance of the radian of the chain wheel, and the stress direction among the corresponding first chain link, second chain link and the matched pin shaft is also changed. Under the drive of the change of the stress direction, the pin rolls relative to the first pin hole, and in the rolling process of the pin, the main bearing surface and the main transmission surface are separated, and the auxiliary bearing surface is in extrusion contact with the auxiliary transmission surface and bears transmission, so that the switching of the bearing surfaces is realized.
Under the tight side transmission and the two states of meshing with the chain wheel, the bearing part on the first pin hole changes, meanwhile, the corresponding bearing part on the pin shaft also changes, and the abrasion on the first pin hole and the pin shaft can be effectively prevented from being concentrated in the same area through changing the form of the bearing surface in stages, so that the service life of the whole chain is prolonged in a partition abrasion mode.
Preferably, the projection of the auxiliary transmission surface on the axial section is arc-shaped, and the curvature radius of the auxiliary transmission surface is smaller than or equal to that of the auxiliary bearing surface.
Preferably, the main bearing surface is a plane.
Preferably, the main bearing surface is a curved surface, and the radius of curvature of the main bearing surface is not equal to the radius of curvature of the auxiliary bearing surface.
Preferably, on the axial section of the first pin hole, the projection of the inner wall surface is gradually inclined outward from one end corresponding to the auxiliary bearing surface to the other end; the inclination angle of the inner side wall surface relative to the transmission direction is not more than 65 degrees.
On the premise of leaving enough space for the rolling of the pin shaft, the weakening degree of the strength of the first chain link is reduced as much as possible.
Preferably, the second pin hole is matched with the pin shaft.
Preferably, the second chain link further comprises two outer guide plates, the second chain plate is located between the two outer guide plates, and two ends of the pin shaft extend out of the outer guide plates and are riveted.
The chain transmission system comprises a chain, a driving sprocket and a driven sprocket, wherein the chain is sleeved on the driving sprocket and the driven sprocket; wherein the chain is the toothed chain.
Drawings
Fig. 1 is a schematic view of the structure of a toothed chain of the present embodiment;
FIG. 2 is an elevation view of the toothed chain of the present embodiment with the first link in tight side;
FIG. 3 is an elevation view of the toothed chain of the present embodiment, with the first link beginning to engage the sprocket;
fig. 4 is a schematic structural view of the pin shaft and the first pin hole in the toothed chain in this embodiment, where the first link is at a tight edge;
FIG. 5 is a schematic view showing the configuration of the toothed chain according to the present embodiment in which the pin shaft is engaged with the first pin hole, and the first link is engaged with the sprocket;
FIG. 6 is a schematic view showing the structure of a first link in the toothed chain of the present embodiment;
fig. 7 is a schematic structural view of the toothed chain according to the present embodiment in which the first link is engaged with the pin;
fig. 8 is a schematic structural view of a pin in the toothed chain of the present embodiment.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Examples
As shown in fig. 1 to 7, the toothed chain comprises a plurality of first chain links 1 and a plurality of second chain links 2, wherein the first chain links 1 comprise at least two first chain plates which are arranged in parallel, and two first pin holes 13 are formed in the first chain plates. The second chain link 2 comprises at least two second chain plates which are arranged in parallel, and two second pin holes are formed in the second chain plates. The first chain links 1 and the second chain links 2 are distributed correspondingly from head to tail in sequence and are connected through pin shafts 3. The first chain plate and the second chain plate are toothed chain plates.
As shown in fig. 4 and 5, the inner wall surface of the first pin hole 13 includes a main bearing surface 131, an auxiliary bearing surface 132, and an inner wall surface 133, where the main bearing surface 131 and the inner wall surface 133 are disposed opposite to each other in the circumferential direction, and the main bearing surface 131 is located at a side of the corresponding first pin hole 13 facing away from another first pin hole 13. The secondary bearing surface 132 is located between the primary bearing surface 131 and the inner sidewall surface 133.
Specifically, the definition is first directed along the transmission direction, the vertical direction and the transmission direction are second directed, the main bearing surface 131, the auxiliary bearing surface 132 and the inner side wall surface 133 are sequentially distributed in the circumferential direction, the main bearing surface 131 and the inner side wall surface 133 are oppositely arranged along the first direction, the main bearing surfaces 131 of the two first pin holes 13 are both located at the outer sides, and the inner side wall surfaces 133 of the two first pin holes 13 are oppositely arranged inwards. In the sprocket assembly state, the auxiliary bearing surface 132 is located on the side facing away from the sprocket. In which the transmission direction is the direction of distribution of the two first pin holes 13.
As shown in fig. 6 and 7, the projection of the secondary bearing surface 132 on the axial section is circular arc. The primary bearing surface 131 has a different projection shape in axial section than the secondary bearing surface 132. Specifically, the main bearing surface 131 is a plane surface or a curved surface with a radius of curvature larger than that of the auxiliary bearing surface 132.
As shown in fig. 8, the side surface of the pin shaft 3 includes a main transmission surface 32 and a secondary transmission surface 31, the main transmission surface 32 is matched with the main bearing surface 131, and the secondary transmission surface 31 is matched with the secondary bearing surface 132. Specifically, the projection of the secondary transmission surface 31 on the axial section is circular arc, and the radius of curvature of the secondary transmission surface 31 is smaller than or equal to the radius of curvature of the secondary bearing surface 132.
In the working state, as shown in fig. 4, when the first chain link 1 is located at the tight edge of the chain, the first chain link 1 and the second chain link 2 are on the same straight line, the main driving surface 32 is in pressing contact with the main bearing surface 131 and bears, and F in fig. 4 is the bearing force direction of the pin shaft. At this time, a gap is left between the pin shaft 3 and the inner side wall surface 133, and a rolling interval is formed.
As shown in fig. 5, when the first chain link 1 is engaged with the sprocket, a certain included angle is formed between the first chain link 1 and the second chain link 2 under the curvature guidance of the sprocket, and the stress direction of the pin shaft 3 is changed. At this time, due to the lack of consistency of the shapes of the main bearing surface 131 and the auxiliary bearing surface 132, the pin shaft 3 will move in a turnover manner relative to the first pin shaft 3 under the driving of the change of the stress direction until the auxiliary transmission surface 31 is in extrusion contact with the auxiliary bearing surface 132, so as to complete the switching of the bearing surfaces, and F shown in fig. 5 is the bearing stress direction of the pin shaft at this time. The main driving surface 32 is separated from the main bearing surface 131, and the pin shaft 3 is not contacted with the inner side wall surface 133.
Under the tight side transmission and the two states of meshing with the chain wheel, the bearing part on the first pin hole changes, meanwhile, the corresponding bearing part on the pin shaft 3 also changes, and the abrasion on the first pin hole 13 and the pin shaft 3 can be effectively prevented from being concentrated in the same area by changing the form of the bearing surface in stages, so that the overall service life of the chain is prolonged in a partition abrasion mode.
As shown in fig. 6, further, on the axial cross section of the first pin hole 13, the projection of the inner wall surface 133 gradually slopes outward from one end to the other end corresponding to the sub-bearing surface 132. The inclination angle of the inner side wall surface 133 with respect to the transmission direction is not more than 65 °. On the premise of leaving enough space for the rolling of the pin shaft 3, the weakening degree of the strength of the first chain link 1 is reduced as much as possible.
As shown in fig. 1, further, the second pin hole is matched with the pin shaft 3. The pin 3 rotates synchronously with the second link 2 due to the non-standard circular cross section of the pin 3. When the second link 2 enters the engagement state with the sprocket from the tight side, the pin 3 rotates synchronously with the second link 22 relative to the first link 1, so that the pin 3 rolls in place relative to the first pin hole 13, and the main bearing surface 131 is reliably separated from the main transmission surface 32.
As shown in fig. 1, further, the second chain link 2 further includes two outer guide plates 24, the second chain plate is located between the two outer guide plates, and two ends of the pin shaft 3 extend out of the outer guide plates and are riveted.
The chain transmission system comprises a chain, a driving sprocket and a driven sprocket, wherein the chain is sleeved on the driving sprocket and the driven sprocket; wherein the chain is the toothed chain.
In summary, the foregoing description is only of the preferred embodiments of the invention, and is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (8)

1. The toothed chain comprises a plurality of first chain links and a plurality of second chain links, wherein each first chain link comprises at least two first chain plates which are arranged in parallel, and two first pin holes are formed in each first chain plate; the second chain link comprises at least two second chain plates which are arranged in parallel, and two second pin holes are formed in the second chain plates; the first chain links and the second chain links are distributed correspondingly from head to tail in sequence and are connected through pin shafts;
the method is characterized in that: the first chain plate and the second chain plate are toothed chain plates;
the inner wall surface of the first pin hole comprises a main bearing surface, an auxiliary bearing surface and an inner wall surface, the main bearing surface and the inner wall surface are arranged oppositely in the circumferential direction, and the main bearing surface is positioned at one side, which is opposite to the other first pin hole, of the corresponding first pin hole; the auxiliary bearing surface is positioned between the main bearing surface and the inner side wall surface, and the projection of the auxiliary bearing surface on the axial section is arc-shaped;
the side face of the pin shaft comprises a main transmission face and an auxiliary transmission face, the main transmission face is matched with the main bearing face, and the auxiliary transmission face is matched with the auxiliary bearing face;
when the first chain link is positioned at the tight side of the chain, the main transmission surface is in extrusion contact with the main bearing surface; a gap is reserved between the pin shaft and the inner side wall surface, and a rolling interval is formed;
when the first chain link is meshed with the chain wheel, the auxiliary transmission surface is in extrusion contact with the auxiliary bearing surface, the main transmission surface is separated from the main bearing surface, and the pin shaft is not in contact with the inner side wall surface.
2. Toothed chain according to claim 1, characterized in that: the projection of the auxiliary transmission surface on the axial section is arc-shaped, and the curvature radius of the auxiliary transmission surface is smaller than or equal to that of the auxiliary bearing surface.
3. Toothed chain according to claim 1, characterized in that: the main bearing surface is a plane.
4. Toothed chain according to claim 1, characterized in that: the main bearing surface is a curved surface, and the curvature radius of the main bearing surface is unequal to that of the auxiliary bearing surface.
5. Toothed chain according to claim 1, characterized in that: on the axial section of the first pin hole, the projection of the inner side wall surface gradually inclines outwards from one end corresponding to the auxiliary bearing surface to the other end; the inclination angle of the inner side wall surface relative to the transmission direction is not more than 65 degrees.
6. Toothed chain according to any one of claims 1-5, characterized in that: the second pin hole is matched with the pin shaft.
7. The toothed chain of claim 6, wherein: the second chain link also comprises two outer guide plates, the second chain plate is positioned between the two outer guide plates, and two ends of the pin shaft extend out of the outer guide plates and are riveted.
8. The chain transmission system comprises a chain, a driving sprocket and a driven sprocket, wherein the chain is sleeved on the driving sprocket and the driven sprocket; the method is characterized in that: wherein the chain is a toothed chain according to any one of claims 1-7.
CN202310433906.1A 2023-04-21 2023-04-21 Toothed chain and chain transmission system Pending CN116428315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310433906.1A CN116428315A (en) 2023-04-21 2023-04-21 Toothed chain and chain transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310433906.1A CN116428315A (en) 2023-04-21 2023-04-21 Toothed chain and chain transmission system

Publications (1)

Publication Number Publication Date
CN116428315A true CN116428315A (en) 2023-07-14

Family

ID=87083105

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310433906.1A Pending CN116428315A (en) 2023-04-21 2023-04-21 Toothed chain and chain transmission system

Country Status (1)

Country Link
CN (1) CN116428315A (en)

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